The Copy-Homework Scorecard
Every 13F site tells you what the legends hold. This page answers a different question: if you had copied their AI sleeve straight off the filing, what would you have made?
As of 2026-09-28
Why this scorecard differs from the rest
13F is delayed quarterly disclosure. The revised method rebalances at the first completed session close after the filing date, excludes Put/Call and principal rows, and requires adjusted prices for every name on identical dates with contiguous periods. Returns are historical simulations before costs, taxes and slippage. The data status below identifies whether this snapshot has been recomputed.
Does copying 13F filings actually work? Method, caveats and the full table →
Historical simulation · not live returns
Uses next-session closes, option filtering and complete price coverage. Current-universe selection, filed weights and excluded trading costs remain limitations; future excess returns are unproven.
13f-next-session-v2 · 2026-09-28
Download versioned data and statusWhat is the simulated value at the snapshot end?
Pick one or more legends, pick a filing date to start, enter a stake. It all runs in your browser — nothing is sent anywhere. With several picked, the stake is split evenly and each sleeve compounds on its own.
Pick at least one investor. This also stays empty when no filing falls after the chosen start date — earlier data is never borrowed to fill the gap.
Uses the method version and historical snapshot shown on this page, before costs, taxes and slippage. Selected sleeves may have different start/end dates; their blend is not a single tradeable portfolio. Historical simulation is neither a manager live return nor a forecast.
| Investor | Window | Rebalances | Gross return | QQQ, same window | Excess | |
|---|---|---|---|---|---|---|
| Stanley Druckenmiller | 2024-08-15 → 2026-08-17 | 8 | +179.5% | +55.5% | +124.0% | Copy this sleeve → |
| Cathie Wood | 2024-07-29 → 2026-08-17 | 8 | +161.8% | +59.0% | +102.8% | Copy this sleeve → |
| David Tepper | 2024-08-15 → 2026-08-17 | 8 | +107.1% | +55.5% | +51.6% | Copy this sleeve → |
| Philippe Laffont | 2024-08-15 → 2026-08-17 | 8 | +80.4% | +55.5% | +24.9% | Copy this sleeve → |
| Bill Ackman | 2024-05-16 → 2026-05-18 | 8 | +76.5% | +57.9% | +18.6% | Copy this sleeve → |
| Warren Buffett | 2024-08-15 → 2026-08-17 | 8 | +34.6% | +55.5% | -20.9% | Copy this sleeve → |
Quarter by quarter
Stanley Druckenmiller+179.5%Beat QQQ
| 2024-08-15 → 2024-11-15 | +15.5% | 7 names |
| 2024-11-15 → 2025-02-18 | +2.7% | 7 names |
| 2025-02-18 → 2025-05-16 | -6.3% | 9 names |
| 2025-05-16 → 2025-08-18 | +19.9% | 5 names |
| 2025-08-18 → 2025-11-17 | +24.5% | 5 names |
| 2025-11-17 → 2026-02-18 | +21.3% | 6 names |
| 2026-02-18 → 2026-05-18 | +22.6% | 3 names |
| 2026-05-18 → 2026-08-17 | +13.1% | 8 names |
CIK 0001536411 · EDGAR
Cathie Wood+161.8%Beat QQQ
| 2024-07-29 → 2024-11-01 | +18.1% | 10 names |
| 2024-11-01 → 2025-02-05 | +57.6% | 11 names |
| 2025-02-05 → 2025-05-08 | -11.9% | 11 names |
| 2025-05-08 → 2025-07-31 | +18.7% | 11 names |
| 2025-07-31 → 2025-11-13 | +18.6% | 11 names |
| 2025-11-13 → 2026-02-12 | -7.1% | 11 names |
| 2026-02-12 → 2026-05-13 | +22.4% | 11 names |
| 2026-05-13 → 2026-08-17 | -0.2% | 12 names |
CIK 0001697748 · EDGAR
David Tepper+107.1%Beat QQQ
| 2024-08-15 → 2024-11-15 | +6.2% | 10 names |
| 2024-11-15 → 2025-02-11 | +7.8% | 10 names |
| 2025-02-11 → 2025-05-16 | -4.3% | 10 names |
| 2025-05-16 → 2025-08-15 | +20.9% | 10 names |
| 2025-08-15 → 2025-11-14 | +10.3% | 9 names |
| 2025-11-14 → 2026-02-18 | +2.8% | 9 names |
| 2026-02-18 → 2026-05-18 | +25.7% | 9 names |
| 2026-05-18 → 2026-08-17 | +9.7% | 10 names |
CIK 0001656456 · EDGAR
Philippe Laffont+80.4%Beat QQQ
| 2024-08-15 → 2024-11-15 | +9.8% | 14 names |
| 2024-11-15 → 2025-02-18 | +10.2% | 14 names |
| 2025-02-18 → 2025-05-16 | -3.9% | 14 names |
| 2025-05-16 → 2025-08-15 | +20.1% | 12 names |
| 2025-08-15 → 2025-11-17 | +4.6% | 11 names |
| 2025-11-17 → 2026-02-18 | +2.6% | 13 names |
| 2026-02-18 → 2026-05-18 | +16.4% | 14 names |
| 2026-05-18 → 2026-08-17 | +3.4% | 12 names |
CIK 0001135730 · EDGAR
Bill Ackman+76.5%Beat QQQ
| 2024-05-16 → 2024-08-15 | -7.0% | 2 names |
| 2024-08-15 → 2024-11-15 | +6.8% | 2 names |
| 2024-11-15 → 2025-02-18 | +6.9% | 2 names |
| 2025-02-18 → 2025-05-16 | -9.7% | 2 names |
| 2025-05-16 → 2025-08-15 | +22.7% | 2 names |
| 2025-08-15 → 2025-11-17 | +24.8% | 3 names |
| 2025-11-17 → 2026-02-18 | +0.6% | 3 names |
| 2026-02-18 → 2026-05-18 | +19.6% | 4 names |
CIK 0001336528 · EDGAR
Warren Buffett+34.6%Lagged QQQ
| 2024-08-15 → 2024-11-15 | +0.5% | 2 names |
| 2024-11-15 → 2025-02-18 | +8.9% | 2 names |
| 2025-02-18 → 2025-05-16 | -13.4% | 2 names |
| 2025-05-16 → 2025-08-15 | +9.8% | 2 names |
| 2025-08-15 → 2025-11-17 | +15.1% | 2 names |
| 2025-11-17 → 2026-02-18 | -0.9% | 3 names |
| 2026-02-18 → 2026-05-18 | +14.4% | 3 names |
| 2026-05-18 → 2026-08-17 | -0.9% | 3 names |
CIK 0001067983 · EDGAR
What this number is not
① Current editorial AI universe: selection and survivorship bias remain; this is not a full fund return. ② 13F may report held Put/Call options, but omits equity shorts and written options; full hedges cannot be reconstructed. ③ Report-period weights and original 13F-HR filings are used; amendments and confidential releases are not fully reconstructed. ④ The revised method omits a manager if any price or period is missing. Legacy snapshots retain missing-data bias; read their status.
Holdings from SEC EDGAR original filings, mapped by issuer name to an editorial ticker list (Alphabet classes distinguished by CUSIP); Yahoo Finance adjusted daily closes.
Embed this calculator on your page
Copy this HTML. The embed updates itself — the backtest recomputes four times a year, at each 13F season.
<iframe src="https://compass.agiscorecard.com/en/track-record/?embed=1" width="100%" height="760" style="border:1px solid #1c2942;border-radius:12px" loading="lazy" title="Copy-Homework Scorecard"></iframe>When does the next homework drop?
A 13F lands four times a year, and the new holdings exist only from the filing date. Leave an email and I’ll send one when the next filing lands and this scorecard recomputes.
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Past results do not predict future returns. This is an after-the-fact calculation on public filings — not a recommendation, and not a promise of any return.