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AlphaBaseline

Learn from proven investors — and check the proof.

Which superinvestor portfolios actually performed?

AlphaBaseline gives investors objective, data-driven answers in place of opinion. It does two things at once: it surfaces investment ideas from what proven investors actually own, and it measures the results you would have obtained by following them.

Stanley Druckenmiller leads the AlphaBaseline 5-year copy-investor leaderboard with a return of 210.6%.

Coverage
82/85 managers current
Latest certified quarter
2026/QTR2
Market data
98.6% pricing coverage
RankManagerFund5Y3Y1YQLatest filing
1Stanley DruckenmillerDuquesne Family Office LLC+210.61%+192.32%+47.15%+18.27%Q2 2026filed Aug 14, 2026details
2David TepperAppaloosa Management+168.75%+123.82%+32.47%+5.38%Q2 2026filed Aug 14, 2026details
3Howard MarksOaktree Capital Management+127.86%+72.44%+43.50%-1.99%Q2 2026filed Aug 14, 2026details
4Abrams Bison InvestmentsAbrams Bison Investments+125.52%+134.92%+57.59%+14.75%Q2 2026filed Aug 14, 2026details
5David EinhornGreenlight Capital+116.90%+44.92%+22.62%+12.48%Q2 2026filed Aug 14, 2026details
6Third Avenue ManagementThird Avenue Management+102.45%+78.27%+30.13%+9.74%Q2 2026filed Aug 12, 2026details
7MuhlenkampMuhlenkamp+100.96%+64.67%+29.36%-0.31%Q2 2026filed Aug 18, 2026details
8Michael BurryScion Asset Management+92.65%+48.45%+5.19%+5.19%Q3 2025stalefiled Nov 3, 2025details
9Christopher BloomstranSemper Augustus+91.14%+80.66%+25.63%+8.06%Q2 2026filed Aug 14, 2026details
10Robert VinallRV Capital GmbH+87.30%+157.57%+3.74%+2.49%Q2 2026filed Aug 14, 2026details
11Duan YongpingH&H International Investment+83.79%+59.72%+21.23%+0.04%Q2 2026filed Aug 14, 2026details
12Li LuHimalaya Capital Management+81.07%+92.12%+28.15%-3.16%Q2 2026filed Aug 14, 2026details
View the full leaderboardMethodology and limitationsHistorical SEC 13F data, delayed by filing rules. Not investment advice.

Latest portfolio updates

Recent SEC 13F periods tracked by AlphaBaseline. For what each filing bought and sold, see the latest filings.

Greenhaven AssociatesGreenhaven AssociatesQ3 2026Oct 26, 202627$7.96B
John ArmitageEgerton CapitalQ3 2026Oct 20, 202623$9.82B
David KatzMatrix Asset AdvisorsQ3 2026Oct 13, 2026100$1.21B
Francois RochonGiverny CapitalQ2 2026Aug 26, 202651$2.97B
First EagleFirst Eagle Investment ManagementQ2 2026Aug 24, 2026424$60.73B
MuhlenkampMuhlenkampQ2 2026Aug 18, 202628$345.25M
AltaRock PartnersAltaRock PartnersQ2 2026Aug 17, 20268$4.24B
Kahn Brothers GroupKahn Brothers GroupQ2 2026Aug 17, 202648$632.67M
Abrams Bison InvestmentsAbrams Bison InvestmentsQ2 2026Aug 14, 202611$2.05B
Alex RoepersAtlantic Investment ManagementQ2 2026Aug 14, 202612$191.97M
Ariel InvestmentsAriel InvestmentsQ2 2026Aug 14, 2026106$10.03B
Bill & Melinda Gates Foundation TrustBill & Melinda Gates Foundation TrustQ2 2026Aug 14, 202624$34.42B
Bill AckmanPershing Square Capital ManagementQ2 2026Aug 14, 202614$19.47B
Bill MillerMiller Value PartnersQ2 2026Aug 14, 202656$423.07M
Bill NygrenOakmark FundsQ2 2026Aug 14, 2026161$75.16B
Bruce BerkowitzFairholme CapitalQ2 2026Aug 14, 202613$1.49B
Carl IcahnIcahn Capital ManagementQ2 2026Aug 14, 202612$8.26B
Chase ColemanTiger Global ManagementQ2 2026Aug 14, 202646$23.98B
Chris HohnTCI Fund ManagementQ2 2026Aug 14, 202611$52.77B
Christopher BloomstranSemper AugustusQ2 2026Aug 14, 202650$884.6M
Chuck AkreAkre Capital ManagementQ2 2026Aug 14, 202619$5.11B
Clifford SosinCAS Investment PartnersQ2 2026Aug 14, 20266$1.88B
Daniel LoebThird PointQ2 2026Aug 14, 202640$4.64B
David EinhornGreenlight CapitalQ2 2026Aug 14, 202646$3.91B
David RolfeWedgewood PartnersQ2 2026Aug 14, 202618$484.43M
David TepperAppaloosa ManagementQ2 2026Aug 14, 202625$7.47B
Dennis HongShawSpring PartnersQ2 2026Aug 14, 202611$232.08M
Duan YongpingH&H International InvestmentQ2 2026Aug 14, 202618$19.1B
First Pacific AdvisorsFirst Pacific AdvisorsQ2 2026Aug 14, 202672$7.97B
Glenn GreenbergBrave Warrior AdvisorsQ2 2026Aug 14, 202640$4.59B
Glenn WellingEngaged CapitalQ2 2026Aug 14, 20269$322.92M
Henry EllenbogenDurable Capital PartnersQ2 2026Aug 14, 202636$10.28B
Hillman Value FundHillman Value FundQ2 2026Aug 14, 202654$138.15M
Howard MarksOaktree Capital ManagementQ2 2026Aug 14, 202649$3.78B
Josh TarasoffGreenlea Lane CapitalQ2 2026Aug 14, 202610$364.21M
Lee AinslieMaverick CapitalQ2 2026Aug 14, 2026177$11.08B
Leon CoopermanLeon CoopermanQ2 2026Aug 14, 202639$3.55B
Li LuHimalaya Capital ManagementQ2 2026Aug 14, 20268$3.7B
Mairs & Power Growth FundMairs & Power Growth FundQ2 2026Aug 14, 2026254$10.9B
Mason HawkinsSoutheastern Asset ManagementQ2 2026Aug 14, 202647$1.92B
Norbert LouPunch Card ManagementQ2 2026Aug 14, 20265$255.95M
Pat DorseyDorsey Asset ManagementQ2 2026Aug 14, 202611$1.56B
Prem WatsaFairfax Financial HoldingsQ2 2026Aug 14, 202632$2.64B
Robert VinallRV Capital GmbHQ2 2026Aug 14, 202613$382.89M
Ruane Cunniff LPRuane Cunniff LPQ2 2026Aug 14, 202654$6.43B
Stanley DruckenmillerDuquesne Family Office LLCQ2 2026Aug 14, 202686$4.35B
Stephen MandelLone Pine CapitalQ2 2026Aug 14, 202634$16.36B
Terry SmithFundsmithQ2 2026Aug 14, 202641$13.65B
Valley Forge Capital ManagementValley Forge Capital ManagementQ2 2026Aug 14, 20267$3.12B
ValueAct CapitalValueAct CapitalQ2 2026Aug 14, 202618$5.63B
Viking Global InvestorsViking Global InvestorsQ2 2026Aug 14, 202690$35.08B
Warren BuffettBerkshire HathawayQ2 2026Aug 14, 202629$299.25B
Bryan LawrenceOakcliff CapitalQ2 2026Aug 13, 20269$268.45M
David AbramsAbrams Capital ManagementQ2 2026Aug 13, 202611$5.48B
Dodge & CoxDodge & CoxQ2 2026Aug 13, 2026222$191.01B
Greg AlexanderConifer ManagementQ2 2026Aug 13, 20266$606.66M
Mohnish PabraiPabrai InvestmentsQ2 2026Aug 13, 20264$326.75M
Samantha McLemorePatient Capital ManagementQ2 2026Aug 13, 202639$3.01B
Sarah KettererCauseway Capital ManagementQ2 2026Aug 13, 2026122$9.24B
Seth KlarmanBaupost GroupQ2 2026Aug 13, 202623$5.42B
Thomas RussoGardner Russo & QuinnQ2 2026Aug 13, 202685$8.93B
Triple Frond PartnersTriple Frond PartnersQ2 2026Aug 13, 202613$1.12B
AKO CapitalAKO CapitalQ2 2026Aug 12, 202622$4.29B
Francis ChouChou AssociatesQ2 2026Aug 12, 202631$216.59M
Harry BurnSound ShoreQ2 2026Aug 12, 202640$3.25B
Nelson PeltzTrian Fund ManagementQ2 2026Aug 12, 20268$4.23B
Third Avenue ManagementThird Avenue ManagementQ2 2026Aug 12, 202655$625.34M
Wallace WeitzWeitz Investment ManagementQ2 2026Aug 12, 202650$1.44B
Christopher DavisDavis AdvisorsQ2 2026Aug 11, 2026112$23.29B
Yacktman Asset ManagementYacktman Asset ManagementQ2 2026Aug 11, 202674$8.09B
Vulcan Value PartnersVulcan Value PartnersQ2 2026Aug 10, 202636$3.29B
Jensen Investment ManagementJensen Investment ManagementQ2 2026Aug 7, 202683$4.13B
Richard PzenaPzena Investment ManagementQ2 2026Aug 7, 2026161$34.07B
Tweedy Browne Co.Tweedy Browne Value FundQ2 2026Aug 7, 202691$1.32B
Steven CheckCheck Capital ManagementQ2 2026Aug 5, 202616$1.74B
Polen Capital ManagementPolen Capital ManagementQ2 2026Aug 4, 2026219$11.61B
Thomas GaynerMarkel Asset ManagementQ2 2026Jul 31, 2026130$13.13B
Torray FundsTorray FundsQ2 2026Jul 30, 202691$741.29M
William Von MuefflingCantillon Capital ManagementQ2 2026Jul 29, 202627$665.11M
Daily Journal Corp (Charlie Munger)Daily Journal CorpQ2 2026Jul 16, 20264$256.66M
Lindsell TrainLindsell TrainQ2 2026Jul 15, 202628$2.63B
Guy SpierAquamarine CapitalQ2 2026Jul 10, 20267$144.09M
Robert OlsteinOlstein Capital ManagementQ1 2026Apr 21, 202699$458.07M
Makaira PartnersMakaira Partners LLCQ4 2025Feb 11, 202611$127.9M
Michael BurryScion Asset ManagementQ3 2025Nov 3, 20254$68.14M

Frequently asked questions

What is AlphaBaseline?
AlphaBaseline follows the SEC Form 13F filings of about 80 focused, high-conviction institutional investors and turns them into readable portfolios, quarter-over-quarter activity, and an auditable copy-investor backtest. Every figure traces back to a public SEC EDGAR filing.
What questions can AlphaBaseline answer?
What does a given investor hold now and how did it change last quarter; which stocks the most respected investors crowd into; what they bought and sold as a group; which investor's disclosed portfolio would have returned the most if copied; and which institutional managers hold a particular stock.
Where does the data come from?
Every holding is parsed directly from SEC EDGAR Form 13F-HR filings, including amendments. Holdings are assigned to the quarter of their reporting date, not their filing date, and each row carries its source SEC accession number.
How current is the data?
A nightly job ingests new EDGAR filings and pricing refreshes daily. Because 13F filings are disclosed with a lag of up to 45 days after quarter-end, AlphaBaseline reflects what managers held at the reporting date, not live positions.
What makes AlphaBaseline different from other 13F trackers?
It exposes an auditable copy-investor backtest — what following each investor would actually have returned — with the math shown leg-by-leg and downloadable as CSV that reconciles to the published number. It is also built to be cited: machine-readable data, methodology, and a glossary are published for both people and AI assistants.
Is AlphaBaseline investment advice?
No. It is a historical, informational view of disclosed institutional holdings and is not a recommendation to buy or sell any security.