Quarter-end snapshot
13F shows holdings as of the report period, not a live portfolio.
SEC 13F
Review public 13F holdings from major institutional investors.
Form 13F is a quarter-end snapshot of U.S. listed equity holdings. Treat it as a starting point for research questions, not as a current buy signal.
13F directory
Featured 13F filers
KRW Ontology starts with high-demand institutional managers and links each public page to holdings, weights, and quarterly rebalancing context.
KR · CIK 0001608046National Pension ServiceU.S. equity holdings disclosed by Korea's National Pension ServiceView 13FUS · CIK 0002012383BlackRockU.S. listed equity holdings from the global asset managerView 13FUS · CIK 0001067983Berkshire HathawayWarren BuffettBerkshire Hathaway 13F portfolio changes associated with Warren BuffettView 13FUS · CIK 0001697748ARK InvestCathie WoodCathie Wood's ARK 13F holdings across innovation-oriented growth stocksView 13FUS · CIK 0001536411Duquesne Family OfficeStanley DruckenmillerStanley Druckenmiller's quarterly 13F holdings through Duquesne Family OfficeView 13FUS · CIK 0000850529Fisher Asset ManagementKen FisherKen Fisher's Fisher Asset Management 13F holdingsView 13FUS · CIK 0001336528Pershing SquareBill AckmanBill Ackman's concentrated 13F portfolio through Pershing SquareView 13FUS · CIK 0001656456AppaloosaDavid TepperDavid Tepper's Appaloosa 13F holdingsView 13FUS · CIK 0001061768Baupost GroupSeth KlarmanSeth Klarman's Baupost Group 13F portfolioView 13FUS · CIK 0001040273Third PointDan LoebDan Loeb's Third Point 13F holdingsView 13FUS · CIK 0001029160Soros Fund ManagementGeorge SorosSoros Fund Management 13F holdingsView 13FUS · CIK 0001135730CoatuePhilippe LaffontPhilippe Laffont's Coatue 13F holdingsView 13FUS · CIK 0001167483Tiger GlobalChase ColemanChase Coleman's Tiger Global 13F holdingsView 13FUS · CIK 0001103804Viking GlobalAndreas HalvorsenViking Global's 13F portfolio changesView 13FUS · CIK 0001061165Lone Pine CapitalSteve MandelSteve Mandel's Lone Pine Capital 13F holdingsView 13F
How to read 13F data
Disclosure delay
Filings are generally submitted within 45 days after quarter end, so positions may have changed by publication.
Research input
The useful question is not only who holds a stock, but what filing evidence should be checked next.
13F FAQ
Is a 13F filing a buy recommendation?
No. A 13F filing is a historical holdings snapshot. KRW Ontology treats it as a source for follow-up company research questions.
What can I see in 13F data?
You can review the manager, report period, issuer, CUSIP, shares, market value, portfolio weight, and changes versus the previous quarter.
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