How Reddit Citations Changed in Perplexity for High-Stakes Investing, Retirement, Mortgage and Financial Consumer Decisions

LLM Authority Index Research | High-Stakes Consumer Decisions | Investing, Retirement, Mortgage and Financial Decisions | Perplexity | July-September 2026

Reddit lost most of its direct citation visibility in Perplexity across high-stakes investing, retirement, mortgage and related financial questions between July and September 2026.

On the balanced 11-vertical financial panel, Reddit's share of visible Perplexity citation events fell from 4.82% to 0.62%, an 87.0% relative decline. The share of eligible Perplexity responses containing at least one Reddit citation fell from 7.68% to 0.80%, an 89.5% relative decline.

A stricter matched-prompt test produced an even cleaner directional result. Across 221 exact prompt-plus-Perplexity scenarios observed at both endpoints, 16 scenarios lost Reddit, 0 gained Reddit, 0 retained Reddit and 205 cited Reddit in neither month.

Matched Reddit response coverage therefore fell from 7.24% to 0.00%, a 100% relative decline.

For the 16 discordant matched pairs, the exact two-sided McNemar result is approximately p = 3.05e-5.

The three-month source market still shows that Reddit was meaningful earlier in the quarter. Across 1,683 eligible Perplexity responses, Reddit was cited in 81 responses, or 4.81%, and generated 86 of 2,401 substantive public-facing citation events, approximately 3.58% of the cleaned citation pool.

Reddit ranked #8 overall across the full three-month Perplexity investing, retirement, mortgage and financial source market. Its monthly position moved from #4 in July to #3 in August and then #33 in September.

That contrast is commercially important.

A pooled quarterly source ranking can show Reddit as a Top 10 Perplexity financial source while the most recent monthly endpoint shows that its visible citation role has already weakened dramatically.

Important: This study measures visible citations in a defined high-stakes commercial query panel. It does not measure hidden model training data, private retrieval signals or recommendation causality. A visible citation does not prove that Reddit caused a brokerage, lender, mortgage provider, crypto platform, gold dealer, financial adviser or investment product to be recommended.

Answer Capsule

Did Reddit lose citation visibility in Perplexity for high-stakes investing, retirement, mortgage and financial decisions from July to September 2026? Yes. Reddit's balanced Perplexity citation-event share fell from 4.82% to 0.62%, down 87.0%, while response citation coverage fell from 7.68% to 0.80%, down 89.5%. In the strict matched panel, 16 of 221 scenarios lost Reddit and 0 gained it, reducing matched coverage from 7.24% to 0.00%. Reddit still ranked #8 across the full three-month source market, but its monthly rank fell from #4 in July to #33 in September.

Key Findings

• Balanced Reddit citation-event share in Perplexity fell from 4.82% in July to 0.62% in September, down 87.0%.
• Balanced Reddit response citation coverage fell from 7.68% to 0.80%, down 89.5%.
• The strict matched Perplexity panel contained 221 exact prompt-plus-platform scenarios.
• Matched outcomes: 16 losses, 0 gains, 0 persistent Reddit citations and 205 neither-month scenarios.
• Matched Reddit response coverage fell from 7.24% to 0.00%, down 100%.
• The exact two-sided McNemar result is approximately p = 3.05e-5.
• Across the full three-month Perplexity financial source slice, Reddit was cited in 81 of 1,683 responses, or 4.81%.
• Reddit generated 86 of 2,401 substantive public-facing citation events, approximately 3.58%.
• Reddit ranked #8 overall across the three-month Perplexity source market.
• Reddit's monthly rank moved #4 in July, #3 in August and #33 in September.
• Reddit appeared across 7 of the 11 financial source verticals in the three-month source ranking.
• The Perplexity source market contained 410 registrable cited domains and 2,287 domain-response appearances.
• 131 technical or unusable citation entries were excluded from the public publisher ranking, including 125 Perplexity thumbnail-CDN entries and 6 records without usable source URLs.
• The Top 10 financial domains accounted for 44.6% of domain-response appearances.
• Only 41 of the financial Top 100 also appeared in Perplexity's broader High-Stakes Consumer Decisions Top 100.
• Perplexity showed the largest endpoint Reddit decline among the measured platforms in this financial family.
• Broad all-topic Perplexity studies can still rank Reddit #1 while this narrower high-stakes financial panel shows a steep longitudinal decline.

Questions This Study Answers

• Did Reddit's direct citation role in Perplexity weaken for high-intent investing, retirement and mortgage questions?
• Does the decline survive a strict comparison of the same prompts at both endpoints?
• How can Reddit remain a major broad Perplexity source while falling sharply in this financial decision panel?

Why This Research Belongs in Daily AI Search Marketing Decisions

Article 61 isolates one source, Reddit, inside one platform, Perplexity, and one commercial decision family, Investing, Retirement, Mortgage and Financial Decisions. Its operating value comes from separating quarterly authority, current-state visibility, same-prompt persistence and broader source-market churn.

1. Can Reddit remain a Top 10 quarterly Perplexity financial source while losing most of its current visibility?
2. Does the decline survive a strict same-prompt comparison?
3. How should financial marketers interpret the result inside a source market that is itself rotating quickly?

Across the full three-month Perplexity financial source study, Reddit still ranked #8 overall at 4.81% response citation coverage. It generated 86 of 2,401 substantive public-facing citation events, or about 3.58%, and appeared in 81 of 1,683 eligible responses.

That aggregate rank masks a major current-state shift. Reddit's monthly rank moved #4 in July, #3 in August and #33 in September.

The balanced 11-vertical endpoint shows the same direction. Reddit citation-event share fell from 4.82% to 0.62%, down 87.0%, while response citation coverage fell from 7.68% to 0.80%, down 89.5%.

The strict matched panel is even cleaner. Across 221 exact prompt-plus-Perplexity scenarios, Reddit produced 16 losses, 0 gains, 0 persistent citations and 205 neither-month scenarios. Matched coverage fell from 7.24% to 0.00%, and the exact two-sided McNemar result is approximately p = 3.05e-5.

For publishers, the practical lesson is that a pooled-quarter Top 10 rank should not be sold as proof of stable current visibility. For investment platforms, mortgage companies, financial institutions, publishers and CMOs, the operating model should keep aggregate authority, current-month rank, response coverage, citation-event share and matched persistence as separate metrics.

The surrounding Perplexity financial source market was active and concentrated, but highly unstable month to month. Its Top 100 account for 79.5% of domain-response appearances, and the Top 10 account for 44.6%, yet only 38 domains remained in the monthly Top 100 across July, August and September. Median monthly Top 100 Jaccard similarity was only 32.5%.

That broader churn does not explain away the Reddit result. The same-prompt panel still produced 16 losses and zero gains, and Reddit's monthly rank fell thirty positions from August to September. The defensible interpretation is a Reddit-specific deterioration occurring inside a Perplexity financial source market that was already rotating materially.

Category specialization is also substantial. Only 41 of Perplexity's financial Top 100 domains also appear in Perplexity's broader High-Stakes Consumer Decisions Top 100. The final financial child-study Top 100 lists show Perplexity sharing 57 domains with Google AI Overviews, 52 with Google AI Mode, 43 with Gemini, 41 with ChatGPT and 40 with Microsoft Copilot.

The broader Investing, Retirement, Mortgage and Financial Citation Authority Study reports 66.7% median monthly Top 100 persistence, 28.2% frozen median cross-platform Top 100 portability, and an approximate 38.5 percentage-point Persistence-Portability Gap. It also reports 19 domains appearing in all six platform Top 100 lists.

There is an important versioning note. Recomputing portability from the final six child-study Top 100 lists produces about 27.4%, while the frozen parent study reports 28.2%. Article 61 should continue using the published 28.2% parent value for the PPG until the full financial family is rerun through one consolidated pipeline.

The Persistence-Portability Gap framework helps interpret Article 61 correctly. Category-level financial source authority is more persistent over time than universally portable across engines, while Perplexity's own financial source market rotates much more quickly. Article 61 should not create a Perplexity-specific gap by subtracting 32.5% temporal persistence from one pairwise platform overlap because those comparison structures are different.

Perplexity also requires source-surface cleanup. The source study excludes 131 technical or unusable citation entries from the public publisher ranking: 125 Perplexity thumbnail-CDN entries and 6 records without usable source URLs. Those records remain part of the audit trail but should not be interpreted as publisher authority.

Citation visibility should remain separate from brand mentions, recommendation rate, rank, sentiment, citation-recommendation coupling and downstream business outcomes. A visible Reddit citation does not prove that Reddit caused Perplexity to recommend a lender, brokerage, financial adviser, mortgage provider, crypto platform, precious-metals dealer or investment product.

Commercial Action Matrix: What Publishers and CMOs Can Do With the Findings

Need company- or vertical-specific tracking? Publishers and companies can contact LLM Authority Index for individual vertical research, recurring AI citation tracking and company-level reporting. The research service does not sell rankings, inclusion or recommendation placement.

Where Article 61 Fits in the High-Stakes Consumer Decisions Corpus

Article 61 is a child analysis of two parent studies:

• the Investing, Retirement, Mortgage and Financial Reddit decline study, which provides the balanced family endpoint, matched platform comparison and broader replacement analysis; and
• the Perplexity Investing, Retirement, Mortgage and Financial source study, which provides the surrounding three-month source market, including Reddit's #8 aggregate rank and 4.81% response coverage, 38 domains present in all three monthly Top 100s and 32.5% median monthly Top 100 persistence.

The platform-level context comes from the overall Perplexity Top 100 study. The broader interpretation comes from the 2026 AI Citation Authority Study, the overall Reddit decline study, the cross-platform citation-overlap study, the citation-drift study, and the Persistence-Portability Gap framework. Those studies answer different questions and should not be collapsed into one visibility score.

The Core Finding: Reddit's Perplexity Event Share Fell 87%

Questions This Section Answers

• How large was the July-to-September decline?
• Did both citation-event share and response coverage move in the same direction?
• Was the decline measured across the full 11-vertical family?

The balanced endpoint covers all 11 investing, retirement, mortgage and financial source verticals in the parent family.

Both measures moved sharply downward.

Citation-event share asks what portion of all eligible public citation occurrences belonged to Reddit.

Response citation coverage asks what percentage of eligible Perplexity answers cited Reddit at least once.

The agreement between the two denominators matters. The result is not an artifact of Perplexity simply returning more citation URLs in one month. Reddit became much less frequent both as a share of source events and as a response-level source.

The parent family study also found that all 11 of 11 verticals with measurable July Reddit visibility declined in citation-event share by September.

The Strict Matched Test Found 16 Reddit Losses and Zero Gains

Questions This Section Answers

• Did Reddit decline when the exact prompt and platform were held constant?
• How many matched scenarios gained Reddit by September?
• Is the loss-gain imbalance statistically distinguishable from a symmetric pattern?

The strict matched analysis requires the same normalized prompt on the same Perplexity platform family to have one eligible analytical observation in July and one in September.

221 scenarios met that contract.

Matched Reddit response coverage moved from 16 / 221 = 7.24% in July to 0 / 221 = 0.00% in September.

Every matched Reddit-positive July scenario became Reddit-negative by September.

No matched scenario gained Reddit.

For the 16 discordant pairs, the exact two-sided McNemar p-value is approximately 0.0000305.

The matched panel is not a market-share sample. Its value is control.

It asks whether Reddit persisted, disappeared or newly appeared when the prompt and platform were held constant.

In this Perplexity financial subset, all 16 July-positive cases disappeared.

Reddit Was Still #8 Across the Full Three-Month Source Market

Questions This Section Answers

• Did Reddit disappear from Perplexity for the entire quarter?
• How important was Reddit in the pooled three-month source market?
• Why can a Top 10 quarterly rank coexist with a steep endpoint decline?

The full three-month Perplexity source market still shows meaningful Reddit visibility.

Reddit's pooled-quarter rank is therefore real.

But monthly source position reveals the trend:

Reddit improved from #4 to #3 between July and August, then fell thirty positions by September.

That movement is a reminder that pooled rankings answer a different question from endpoint tracking.

The pooled ranking asks which domains accumulated the most visibility over the quarter.

The endpoint analysis asks what the source environment looked like by September.

For current-state AEO and GEO work, both views are necessary.

The Perplexity Financial Source Market Remained Broad and Active

Questions This Section Answers

• Was Reddit's decline caused by Perplexity citing fewer financial sources overall?
• Which domains led the three-month source market?
• Was Reddit still competing with a large publisher ecosystem?

Perplexity continued to cite hundreds of financial sources.

The leading domains by response citation coverage were:

This is not a source-poor environment.

Perplexity continued citing large financial publishers, business media and category specialists.

The data therefore supports source redistribution, not a conclusion that Perplexity stopped using third-party sources.

The Financial Source Market Was More Concentrated Than Perplexity Overall

Questions This Section Answers

• How concentrated was Perplexity's financial source market?
• Did the category-specific Top 100 resemble Perplexity's overall Top 100?
• Why does category-specific measurement matter?

The Top 10 domains accounted for 44.6% of domain-response appearances in this financial source market.

The Top 100 accounted for 79.5%.

Only 41 of the financial Top 100 also appeared in Perplexity's broader High-Stakes Consumer Decisions Top 100.

That means most of the category-specific financial Top 100 would be missed by a strategy based only on the platform-wide leaderboard.

This matters for Reddit interpretation.

Reddit's broad importance on Perplexity does not guarantee the same level of importance in mortgages, robo-advisors, structured settlements, precious metals or financial-adviser decisions.

Category context changes the source market.

Specialist Publishers Can Dominate Individual Financial Verticals

Questions This Section Answers

• Can a lower-ranked category source still dominate a specific vertical?
• Which specialist examples stand out in the Perplexity financial study?
• What does that imply for outreach?

Category-wide rank does not tell the whole story.

The Perplexity source study found that specialist sources can become much stronger inside a particular financial vertical.

Examples include:

• APMEX, which reaches 13.6% response coverage in Gold IRAs and Precious Metals Dealers.
• StockBrokers.com, which reaches 8.5% response coverage in Online Stock Brokers.

That means a financial brand should not replace Reddit with one generic list of broad publishers.

A mortgage lender, crypto wallet, robo-adviser, gold dealer and stock broker may need materially different source strategies.

Perplexity Showed the Largest Reddit Decline in This Financial Family

Questions This Section Answers

• How did Perplexity compare with the other measured AI platforms?
• Which platforms showed the strongest Reddit losses?
• Why is a blended financial Reddit KPI misleading?

The parent financial study shows substantial platform divergence.

Perplexity has the largest endpoint decline in the family.

Its response citation coverage also fell the fastest, down 89.5%.

The platform-level result is materially different from Google AI Overviews and Google AI Mode, where Reddit retained much more of its July citation share.

That is why a single "Reddit visibility in AI" score is operationally weak.

A financial brand can lose Reddit citations in Perplexity while still seeing much stronger Reddit visibility on Google's AI surfaces.

The Parent Family Study Found Broad Decline Across All 11 Verticals

Questions This Section Answers

• Was the family-level decline confined to one financial niche?
• Which verticals declined the most?
• Did any vertical escape the decline?

The broader investing, retirement, mortgage and financial study found that all 11 verticals with measurable July Reddit citation share declined by September.

The steepest event-share declines were:

1. Structured Settlements, down 75.8%, from 1.83% to 0.44%.
2. Reverse Mortgage, down 67.0%, from 2.00% to 0.66%.
3. Mortgage, down 52.1%, from 3.50% to 1.68%.

The most resilient vertical was Crypto Wallets, but Reddit citation-event share still declined 15.5% there.

Those figures are all-platform family results, not Perplexity-only vertical rates.

They provide category context without being relabeled as platform-specific evidence.

What Appeared When Reddit Disappeared?

Questions This Section Answers

• Did one domain consistently replace Reddit?
• Which sources appeared most often after Reddit losses in the parent financial study?
• Can those replacements be attributed specifically to Perplexity?

The parent family study examined 200 matched Reddit-loss scenarios across all tracked platforms.

The most common newly appearing September domains were:

No domain appeared in a majority of Reddit-loss scenarios.

That argues against a simple one-for-one replacement story.

These figures are all-platform family results and should not be labeled as a Perplexity-only replacement table.

For Perplexity specifically, the defensible result is that 16 matched Reddit-positive scenarios lost Reddit and none gained it.

Which Financial Verticals Are Represented?

The source family contains 11 vertical labels:

1. Annuities
2. Crypto Exchanges
3. Crypto Wallets
4. Gold IRAs and Precious Metals Dealers
5. Mortgage
6. Mortgage Refinance Lenders
7. Online Financial Advisors
8. Online Stock Brokers
9. Reverse Mortgage
10. Robo-Advisors
11. Structured Settlements

All 11 are represented in the broader financial study.

The source labels are dataset memberships, not claims that the verticals are statistically independent industries.

Related exports can share prompts, and exact repeated observations are controlled under the project's anti-double-counting methodology.

How This Study Relates to Prior Perplexity and Reddit Citation Research

Questions This Section Answers

• How can broad Perplexity research still rank Reddit #1 while this financial panel shows a steep decline?
• What does outside research say about Perplexity's social-source behavior in 2026?
• Which methodological differences matter before comparing percentages?

Ahrefs' September 2026 broad U.S. Perplexity study ranks Reddit #1 at 21.6% mention share, ahead of YouTube at 20.8%. Ahrefs measures a broad all-topic U.S. query universe and defines mention share as a domain's share of citations among the top sources in its ranking. Article 61 instead uses high-stakes financial prompts, reports response citation coverage plus citation-event share, and measures change across July through September.

Those findings can coexist. Reddit can remain Perplexity's largest broad source in September while losing most of its visibility inside a narrower investing, mortgage and financial decision panel.

Tinuiti's Q3 2026 AI Citation Trends Report independently identifies Perplexity as a notable exception to the broader pattern of AI platforms reaching or approaching Q3 highs in social citation share. Tinuiti tracks a different set of commercial categories and measures broader social-source behavior, so its figures should not be converted into a Reddit-specific financial benchmark.

Wellows reports that across 804,058 Perplexity answers and 3.87 million citations collected from September 2025 through May 2026, Reddit was the #1 most-cited domain. Its broader and earlier dataset is useful historical context, not a denominator for Article 61. It shows that Reddit's broad Perplexity prominence earlier in 2026 is compatible with a later category-specific decline.

Taken together, the outside research strengthens the case for measurement discipline, not a universal Reddit narrative. The defensible comparison is direction, platform specificity, query population, time period and denominator, not decimal-point equivalence across unrelated panels.

How This Study Relates to the Parent Financial Reddit Study

The parent investing, retirement, mortgage and financial study found that Reddit's balanced all-platform citation-event share fell from 4.95% to 3.31%, a 33.1% relative decline.

Balanced response citation coverage fell from 15.05% to 9.64%, down 36.0%.

Perplexity declined much more sharply.

Its event share fell from 4.82% to 0.62%, down 87.0%, while response coverage fell from 7.68% to 0.80%, down 89.5%.

The all-platform matched study found 200 Reddit losses and 53 gains.

Perplexity contributed 16 losses and 0 gains across 221 matched scenarios.

This child analysis therefore shows that Perplexity was one of the strongest contributors to the broader directional Reddit decline in this family.

How This Study Is Different

This article narrows the broader financial Reddit research to one platform, one high-stakes family and one three-month research period.

It combines:

1. a 1,683-response Perplexity investing, retirement, mortgage and financial source slice;
2. a balanced 11-vertical July-to-September endpoint;
3. a 221-scenario exact matched prompt-plus-Perplexity test;
4. both citation-event share and response citation coverage;
5. a three-month source market containing 410 registrable cited domains;
6. monthly Reddit rank movement from #4 to #3 to #33;
7. explicit treatment of 131 technical or unusable citation entries;
8. comparison with broad Perplexity research from Ahrefs;
9. comparison with Tinuiti's Q3 platform findings; and
10. external source-pool context from Machine Relations and Wellows.

The narrow research question is:

How stable was Reddit as a directly cited source in Perplexity for consequential investing, retirement, mortgage and related financial consumer decisions from July through September 2026?

Why AI Citation Studies Can Disagree

Questions This Section Answers

• Why can broad Perplexity research rank Reddit first while this study shows an 87% decline?
• Which methodology choices change the result most?
• What should financial marketers compare before using an external benchmark?

Query population

Broad all-topic queries include many categories where Reddit may be used more frequently than in high-stakes financial decisions.

Time period

A September leaderboard is a cross-sectional snapshot. This article is a July-to-September longitudinal study.

Denominator

Citation-event share, response citation coverage and mention share are not interchangeable.

Category specialization

Mortgages, crypto exchanges, financial advisers, robo-advisors and gold dealers draw from different source ecosystems.

Technical-source cleanup

The Perplexity financial source study excludes 125 thumbnail-CDN entries and 6 citation records without usable URLs from the public publisher ranking.

Prompt matching

The strict paired analysis requires the same normalized prompt and platform at both endpoints.

Platform capture

Perplexity can expose citations differently across product versions, query types, geography and collection systems.

Prompt weighting

The panel is not weighted by mortgage volume, assets under management, search volume, CPC, revenue, lead value or conversion probability.

The correct question is therefore not:

"What is Reddit's universal Perplexity citation rate?"

The useful question is:

What did Reddit citation visibility look like for this platform, this high-stakes financial decision population, this time period and this measurement definition?

Methodology

Source archive

This study uses the frozen July-September 2026 LLM Authority Index High-Stakes Consumer Decisions corpus underlying the investing, retirement, mortgage and financial source studies and the parent Reddit decline analysis.

Platform filter

Only observations assigned to the Perplexity platform family are included.

Category filter

Observations are included when their source membership belongs to the Investing, Retirement, Mortgage and Financial Decisions family.

Raw and screened Perplexity financial sample

The related source study reports:

• 2,071 raw July-September Perplexity observations
• 25 explicit extraction failures
• 1,683 eligible deduplicated responses
• 2,532 captured citation entries after exact-repeat handling
• 131 technical or unusable exclusions
• 2,401 substantive public-facing citation events
• 410 registrable cited domains
• 2,287 domain-response appearances

Exact analytical repeat handling

Exact analytical repeats are controlled using the project's documented repeat logic so duplicate observations do not inflate source coverage.

Prompt normalization

Matched prompt text is normalized using Unicode NFKC normalization, case folding, whitespace collapse and trimming.

Domain normalization

Citation URLs are parsed to hostname, lowercased, stripped of leading www where applicable and consolidated to registrable domain using Public Suffix List logic.

Reddit identification

Reddit is identified at the registrable-domain level as reddit.com.

Public technical exclusions

The public Perplexity financial publisher ranking excludes:

• 125 Perplexity thumbnail-CDN citation entries
• 6 citation records without usable source URLs

Total excluded: 131.

Citation-event share

Reddit citation-event share = Reddit citation events / all eligible substantive public citation events

Response citation coverage

Reddit response citation coverage = eligible responses citing Reddit at least once / all eligible responses

Reddit counts no more than once per response for this metric.

Balanced endpoint

The July-to-September endpoint uses all 11 source verticals represented in the family comparison.

Reddit event share falls from 4.82% to 0.62%.

Reddit response coverage falls from 7.68% to 0.80%.

Matched prompt-plus-platform test

The strict matched Perplexity panel contains 221 scenarios.

The contingency table is:

• both July and September cite Reddit: 0
• July cites Reddit, September does not: 16
• July does not cite Reddit, September cites Reddit: 0
• neither month cites Reddit: 205

Matched response coverage falls from 7.2398% to 0.00%.

The exact two-sided McNemar p-value is approximately 0.0000305176.

Three-month source-market context

Across the full three-month Perplexity financial source slice:

• Reddit appears in 81 responses
• Reddit response citation coverage is 4.8128%
• Reddit generates 86 substantive citation events
• Reddit accounts for approximately 3.5818% of substantive citation events
• Reddit spans 7 financial source verticals
• Reddit ranks #8 overall
• Reddit's monthly rank moves #4 → #3 → #33

Limitations

1. The study covers one frozen three-month research period and should not be treated as a permanent Perplexity rule.
2. The prompt panel is designed for research comparability and high-stakes commercial relevance, not search-volume-weighted market share.
3. Visible citation does not prove recommendation causality, hidden retrieval influence or training-data use.
4. The strict matched Perplexity panel contains 16 discordant Reddit scenarios, so the absolute count should be reported alongside the p-value.
5. Three-month aggregate coverage can conceal major monthly movement.
6. Domain-level aggregation hides page-level source differences.
7. Technical-source cleanup can make denominators differ from raw citation exports.
8. Perplexity behavior can vary by geography, personalization, model version, retrieval configuration and product rollout.
9. The all-platform replacement table should not be interpreted as a Perplexity-only replacement analysis.
10. External studies use different query populations, dates, markets, metrics and collection systems.
11. The parent vertical decline table is all-platform family evidence, not a Perplexity-only vertical analysis.
12. Statistical significance measures the matched loss-gain imbalance. It does not identify why Reddit disappeared.

Commercial Disclosure

LLM Authority Index is affiliated with CiteWorks Studio and related AI-search research and services. This research documents observed AI citation behavior.

Commercial relationships do not alter the frozen source corpus, platform filter, category filter, matching contract or published denominators.

No company can purchase a ranking, recommendation, score or position in this study. Citation visibility should not be interpreted as an endorsement by LLM Authority Index or by Perplexity.

References

1. LLM Authority Index: The 2026 AI Citation Authority Study
2. LLM Authority Index: The Most-Cited Websites in AI for High-Stakes Investing, Retirement, Mortgage and Financial Consumer Decisions
3. LLM Authority Index: Reddit's Decline in AI Citations for High-Stakes Investing, Retirement, Mortgage and Financial Consumer Decisions
4. LLM Authority Index: The 100 Most-Cited Websites in Perplexity for High-Stakes Investing, Retirement, Mortgage and Financial Consumer Decisions
5. LLM Authority Index: The Persistence-Portability Gap
6. LLM Authority Index: The 100 Most-Cited Websites in Perplexity for High-Stakes Consumer Decisions
7. Ahrefs: The 50 Most-Cited Websites in Perplexity, September 2026
8. Tinuiti: Q3 2026 AI Citation Trends Report
9. Wellows: Perplexity Visibility Tracker

Related LLM Authority Index Research

Corpus foundation and measurement framework

• 2026 AI Citation Authority Study
• Overall Reddit Citation Decline Study
• Cross-Platform Citation Overlap Study
• AI Citation Drift Study
• Overall Perplexity Top 100 Study
• Persistence-Portability Gap Framework

Investing, retirement, mortgage and financial source-market branch

• All-Platform Financial Citation Authority Study
• Google AI Overviews Financial Citation Sources
• Google AI Mode Financial Citation Sources
• ChatGPT Financial Citation Sources
• Perplexity Financial Citation Sources
• Gemini Financial Citation Sources
• Microsoft Copilot Financial Citation Sources

Financial Reddit-trend branch

• Financial Reddit Decline Parent Study
• Google AI Overviews Reddit Trend
• Google AI Mode Reddit Trend
• ChatGPT Reddit Trend
• Perplexity Reddit Trend
• Gemini Reddit Trend
• Microsoft Copilot Reddit Trend