What is a Form 13F filer?

Any institutional investment manager with more than $100M in US equities must report its long US equity holdings to the SEC each quarter on Form 13F. This table lists every filer in our dataset with its reported AUM, number of S&P 500 holdings, top-10 concentration and top sector bets.

What does a 13F not show?

Four blind spots: (1) 45-day lag — filings cover quarter-end but arrive up to 45 days later; (2) long-only US equities and options — short positions, pair trades and market-neutral halves are invisible; (3) no non-US equities, fixed income or cash; (4) corporate actions (splits, spinoffs) distort raw share-count deltas.

All 13F Filers

Every SEC Form 13F institutional filer — AUM, S&P holdings, concentration & sector bets · as of 2026-03-31

Sort the table, filter by filer name or one-liner, and open any filer's quarterly 13F page from its row.

Filer	One-liner	AUM$	# of S&P Holdings	Top-10 concentration	Top-1 sector	2nd	3rd
BlackRock, Inc.	Asset management firm, one of the world's largest investment managers.	$4.79T	525	34%	Information Technology 21%	Communication Services 7%	Consumer Discretionary 5%
VANGUARD CAPITAL MANAGEMENT LLC	Asset manager, index fund giant, subsidiary of Vanguard Group.	$3.61T	496	37%	Information Technology 22%	Communication Services 8%	Consumer Discretionary 6%
STATE STREET CORP	Financial services company, major custodian bank and asset manager.	$2.61T	512	32%	Information Technology 19%	Communication Services 7%	Consumer Discretionary 5%
VANGUARD PORTFOLIO MANAGEMENT LLC	Asset manager, subsidiary of Vanguard Group, manages mutual funds.	$1.55T	496	27%	Information Technology 18%	Communication Services 5%	Financials 3%
FMR LLC	Asset management firm, parent of Fidelity Investments.	$1.46T	525	45%	Information Technology 26%	Communication Services 13%	Consumer Discretionary 6%
GEODE CAPITAL MANAGEMENT, LLC	Asset manager, subsidiary of FMR LLC, manages index funds.	$1.41T	495	36%	Information Technology 21%	Communication Services 8%	Consumer Discretionary 5%
MORGAN STANLEY	Global financial services firm, investment bank and asset manager.	$1.24T	528	32%	Information Technology 15%	Communication Services 6%	Financials 6%
JPMORGAN CHASE & CO	Global financial services firm, bank holding company.	$1.16T	525	33%	Information Technology 18%	Communication Services 7%	Consumer Discretionary 5%
BANK OF AMERICA CORP /DE/	Global financial services firm, bank holding company.	$945B	526	36%	Information Technology 11%	Financials 5%	Communication Services 4%
NORTHERN TRUST CORP	Financial services company, asset manager and custodian bank.	$631B	522	34%	Information Technology 20%	Communication Services 7%	Consumer Discretionary 5%

SEC Form 13F data sets · public domain · 45-day filing lag · >$100M AUM managers · sector allocations are shares of the reported long-US-equity value

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What is this directory, and what are the caveats?

The data. Every institutional manager with more than $100M of US equity must file SEC Form 13F each quarter. For each filer we show the reported long-US-equity value (AUM), how many S&P 500 names it holds, how concentrated the top 10 are, and the top three sector bets as a share of the reported value. Open any row to see the full quarter-over-quarter picture: adds, trims, new positions and exits.

The caveats. 13F filings arrive up to 45 days after quarter-end; they cover long US equities and options only — no shorts, no cash, no non-US securities. Sector shares describe the largest positions (the top-20 book); the remainder of the reported value sits in smaller names not broken out here. Everything is as reported by the filer.