Bill Ackman · Stanley Druckenmiller
what they both own
Both Bill Ackman (Pershing Square Capital) and Stanley Druckenmiller (Duquesne Family Office) hold 4 of the same stocks per their latest 13F filings — a Jaccard overlap of 12.1% across portfolios of 11 and 26 positions. Combined position weight in shared names: 55.0% of each investor's portfolio capacity.
Shared positions, ranked by joint conviction
Joint conviction = Bill Ackman's portfolio weight + Stanley Druckenmiller's portfolio weight. A stock that both investors size heavily ranks higher than one both hold marginally. Position weight reflects each investor's most recent 13F filing (45-day SEC lag applies; filings can be 1-3 months old).
| Ticker | Ackman | Druckenmiller | Joint | ConvictionScore |
|---|---|---|---|---|
| BN | 17.6% | 1.8% | 19.4% | 0 |
| AMZN | 17.4% | 1.5% | 18.9% | 0 |
| QSR | 12.2% | 1.0% | 13.2% | 0 |
| SEA | 0.8% | 2.7% | 3.5% | 0 |
Compare individually
Data note. Position percentages are derived from each investor's most recent SEC Form 13F filing (45-day lag), filtered to disclosed long positions only. 13F filings exclude short positions, options (mostly), foreign-domiciled holdings, and positions below the reporting threshold. Joint conviction is a descriptive sum, not a recommendation. Per HoldLens compliance: this page is factual portfolio comparison, not investment advice. Always verify against the source filing before acting.