Every quarter, the largest investment managers in the world publicly disclose every long equity position they hold. The rule was written in 1975 to make institutional ownership transparent to the market, and it produces the single richest window into what capital-constrained sophisticated allocators actually own. Berkshire Hathaway files. Bridgewater files. Citadel, Renaissance, Pershing Square, Scion (Michael Burry), Tiger Global, Appaloosa, and roughly 8,000 other managers with at least $100M in U.S. equities file too.

DiviDrip by TwylightCrow ingests every 13-F filing weekly via the Massive API and buckets the holdings by ticker into a top-200 institutional-holders table on every stock modal. This guide walks through how the data lands in the app, how to read it, what its limitations are, and how the platform’s Smart-Money Crossover badge turns raw filings into a surfacable consensus signal.

How the pipeline works

1. Weekly ingest. A cron job (7-day cooldown) pulls the full 13-F rowset from Massive’s/stocks/filings/vX/13-F endpoint — roughly 300,000+ rows per pass covering the last several quarters.
2. CUSIP → ticker resolution. Each 13-F row identifies the security by CUSIP, not by ticker. A cached CUSIP-to-ticker map (currently ~9,900 entries and growing via an OpenFIGI-backed backfill) resolves the CUSIP to the exchange-listed ticker.
3. Filer name resolution. Raw 13-F filings only carry the 10-digit filer CIK. A separate SEC EDGAR resolver looks up the real entity name (e.g. “GEODE CAPITAL MANAGEMENT, LLC” instead of “0001214717”), cached for 90 days.
4. Per-ticker bucketing. Rows are grouped by ticker, sorted by market value, and the top 200 holders are written to the thirteen_f_by_tickercollection. This is what powers the Insider & Institutional tab table.
5. Famous-institution flagging. Every row is checked against a hand-curated allow-list (Berkshire, Bridgewater, Citadel, Renaissance, Two Sigma, Pershing Square, Tiger Global, Appaloosa, Icahn, Fairholme, Scion, Third Point, Soros, Lone Pine, Viking Global, Elliott). When three or more famous filers hold the same ticker, a Smart-Money Crossover badge fires at the top of the tab.

What the top-institutional-holders table looks like

A few live examples pulled directly from the platform this week. Numbers are quarter-end market values rounded to the nearest $1M. The full table on the app shows share count, voting authority breakdown, and per-holder trend indicators.

Apple (AAPL) — the megacap consensus name

See AAPL 13-F live →

Nvidia (NVDA) — the AI-cycle consensus name

See NVDA 13-F live →

Meta (META) — the growth-manager consensus name

See META 13-F live →

What the Smart-Money Crossover badge means

The famous-institutions allow-list contains 16 filers we treat as elevated signal:

• Berkshire (Buffett)
• Bridgewater (Dalio)
• Citadel (Griffin)
• Renaissance Tech
• Two Sigma
• Pershing Square (Ackman)
• Tiger Global
• Appaloosa (Tepper)
• Icahn Enterprises
• Fairholme (Berkowitz)
• Scion (Burry)
• Third Point (Loeb)
• Soros Fund Management
• Lone Pine Capital
• Viking Global
• Elliott Management

When three or more of these show up simultaneously in the same stock’s 13-F table, the Smart-Money Crossover badge fires. It is a genuine information signal — consensus across independent, capital-constrained, sophisticated allocators is different in kind from a single fund holding the position. It is not a stand-alone buy signal, because these managers each have their own risk tolerance, holding period, and mandate. Use it as an idea-generation lens and then run the forensic-safety and valuation checks separately.

Historical case studies

Michael Burry vs the housing bubble (2005-2008)

Michael Burry, founder of Scion Asset Management, publicly disclosed via his 13-F filings and letters to LPs an increasingly large short position on subprime mortgage derivatives beginning in 2005. Retail readers who followed the disclosures had a two-to-three year window to reduce their own housing-linked exposure before the 2008 financial crisis. Not everyone would have interpreted the disclosures correctly, but the raw information was publicly available.

Berkshire’s Apple entry (2016-2018)

Berkshire Hathaway’s first 13-F disclosure of an Apple position came in May 2016 for the Q1 2016 quarter, showing 9.8M shares. By the end of 2018 the position had grown to over 250M shares, at which point it was Berkshire’s largest single equity position at roughly $40B. Retail investors who bought Apple alongside Berkshire’s accumulation timeline in 2016-2018 earned roughly a 3x return on the stock through 2024 before Berkshire began trimming in 2024-2025. The 13-F trail was the earliest public evidence of Berkshire’s pivot toward high-quality technology.

Bill Ackman’s Chipotle stake (2016)

Pershing Square disclosed a 9.9% stake in Chipotle Mexican Grill in September 2016, shortly after the company’s E. coli crisis. The disclosure lifted the stock roughly 6% on the day, and the position eventually contributed to Ackman’s activist push for board changes and a share-buyback acceleration. Between the 13-F disclosure timeline and Ackman’s eventual sale in 2024, Chipotle roughly 6x’d. Retail investors who acted on the initial 13-F disclosure earned a very strong return, though the wait was long.

The failed activist case — Ackman on Valeant (2015-2016)

Not every famous-manager position works. In 2015 Pershing Square disclosed a large position in Valeant Pharmaceuticals near $200 per share. The stock then collapsed over 90% amid accounting and pricing scandals, and Ackman ultimately exited at a massive loss in early 2017. Retail investors who bought alongside the disclosure lost the majority of their capital. The lesson: even the highest-conviction Smart Money can be wrong. Never abandon the forensic-safety check just because a famous name is on the buyer list. The Beneish M-Score on Valeant was tripping the manipulation flag during Ackman’s accumulation period — a retail investor running the forensic check alongside the 13-F signal would have avoided the trade.

The 3-step 13-F workflow

1. Open the stock modal, Insider & Institutional tab. Read the Smart-Money Crossover badge first (if present) — that tells you how many famous filers hold the name simultaneously.
2. Scan the top-20 holders. Note the mix. A stock dominated by index-fund holders (Vanguard, Geode, BlackRock, State Street) tells you nothing about active conviction — the passive money holds because the stock is in the S&P 500, not because it’s a good investment. A stock with heavy weighting toward active managers (Wellington, Janus, Fidelity active, T. Rowe Price) tells you active-manager conviction is real.
3. Cross-reference against the forensic gate. Never buy a name because a famous fund holds it without running the Capital Analytics forensic-safety check. The Valeant example above shows why. Sophisticated allocators are wrong regularly. The base rate of being wrong is high enough that piggy-backing without your own analysis is a losing strategy in the long run.

Coverage caveats

Roughly 55% of the U.S. equity universe currently has full 13-F bucketing on the platform, with the remainder either (a) too small to attract $100M+ institutional filers, or (b) blocked by CUSIP resolution gaps that are being closed via an ongoing OpenFIGI backfill. Coverage improves weekly as the bucketing cron runs. If a specific ticker shows the “coming soon” fallback in the app, that is the CUSIP-resolution gap talking — the underlying 13-F data exists but has not yet been mapped to a ticker.

FAQ

What is a 13-F filing and who has to file one?

A Form 13-F is a quarterly report filed with the SEC by every institutional investment manager that exercises discretion over at least $100 million of qualifying U.S. equities. It discloses every long equity position held at quarter-end — share count, market value, voting authority, and whether the position is a put or call option. Berkshire Hathaway, Bridgewater, Citadel, Renaissance Technologies, Pershing Square, Scion Asset Management (Michael Burry), and roughly 8,000 other managers file every quarter. The rule was created in 1975 to make institutional ownership transparent to the market, and the filings are the single richest public window into what large asset managers actually own.

Why does 13-F data lag by up to 45 days?

The SEC gives filers 45 days after quarter-end to submit the report. That means the September 30 quarter-end positions are not publicly known until mid-November. A large fund could have completely exited a position weeks before the filing became visible. Treat 13-F data as a slow-moving indicator of positioning trends, not as an actionable buy signal on any single quarter. Institutional turnover in individual positions is generally slower than retail turnover, which is why the lag still contains meaningful information — but a fund that owned a stock at 9/30 may not own it today, and there is no way to know from the filing alone.

What does DiviDrip surface for 13-F data?

Every stock modal has an Insider & Institutional tab that includes a top-200-holders table sourced from the platform’s weekly 13-F bucketing pipeline. Each row shows the filer name (resolved from SEC EDGAR — the raw filings only carry the 10-digit CIK), share count, market value, voting authority breakdown, and a "Smart Money" badge for filers that appear on our curated famous-institutions list (Berkshire, Bridgewater, Citadel, Renaissance, Pershing Square, Scion, Tiger Global, Appaloosa, Icahn, Third Point, Soros, Lone Pine, Viking Global, Elliott, and Two Sigma). A separate Smart-Money Crossover badge appears at the top of the tab whenever three or more famous filers hold the same ticker — a strong consensus signal.

What are the limitations of 13-F data?

Four important gaps. (1) 45-day lag as above. (2) Long-only reporting — short positions are not disclosed on 13-F, so you cannot tell whether a fund holding a stock is net long or partially hedged. (3) Options positions are disclosed but only for common-stock underlyings, and complex derivative structures are invisible. (4) Investment advisors managing separate accounts sometimes file consolidated 13-Fs that mix strategies, so a Bridgewater filing represents dozens of underlying funds with different mandates rather than one coherent portfolio. The Massive endpoint DiviDrip uses gives voting-authority breakdown (sole vs shared) which helps distinguish beneficial ownership from custody-only, but the interpretation still requires judgment.

What is a "Smart Money Crossover" and why does it matter?

A Smart Money Crossover fires when three or more filers from the platform’s hand-curated famous-institutions list hold the same ticker simultaneously. The historical base rate for consensus among top-tier value / event-driven funds is meaningfully above 50% for one-year forward outperformance, especially when the consensus lands during periods of price weakness. It is not a stand-alone buy signal — the same forensic-safety checks from the Hidden Gems vs Value Traps guide still apply — but it is a genuine information signal. Consensus across multiple independent, capital-constrained sophisticated allocators is meaningfully different from a single fund holding a position.

How should retail investors use 13-F data day-to-day?

Three practical applications. (1) Idea generation: scan the Smart-Money Crossover badges across the watchlist to surface consensus names for further work. Never buy on the badge alone — use it as a starting shortlist. (2) Contrarian sizing: if a widely-followed activist (Icahn, Ackman) discloses a new position, retail buying can drive a short-term price spike that fades over 4-8 weeks. Waiting for the initial excitement to settle before entering has historically produced better cost basis. (3) Position confirmation: when you already own a stock and are considering adding, check whether the fund names on the 13-F table have been building or trimming over consecutive quarters. Consistent quarter-over-quarter accumulation is a confirmation. Consistent trimming is not necessarily a sell signal — funds have their own liquidity and mandate constraints — but it deserves an explanation.

Try it

Open any large-cap name on the Dashboard and switch to the Insider & Institutional tab. Scan the top-20 holders. Note whether the mix is index-heavy or active-heavy. Look for the Smart-Money Crossover badge at the top. If it fires, run the Capital Analytics forensic-safety check before treating the consensus as actionable. The signal is real but never sufficient on its own.

For the underlying data mechanics, see the Institutional Holders (Top 13-F) glossary entry. For the forensic gate that turns 13-F consensus into a defensible entry, see the Hidden Gems vs Value Traps guide.

This guide is educational. 13-F filings lag by up to 45 days and disclose only long positions. Institutional holdings are not investment advice. Historical performance is not a forecast.