Bill Ackman · David Tepper
what they both own
Both Bill Ackman (Pershing Square Capital) and David Tepper (Appaloosa Management) hold 5 of the same stocks per their latest 13F filings — a Jaccard overlap of 17.9% across portfolios of 11 and 22 positions. Combined position weight in shared names: 96.3% of each investor's portfolio capacity.
Shared positions, ranked by joint conviction
Joint conviction = Bill Ackman's portfolio weight + David Tepper'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 | Tepper | Joint | ConvictionScore |
|---|---|---|---|---|
| AMZN | 17.4% | 15.2% | 32.6% | 0 |
| UBER | 15.7% | 7.7% | 23.4% | 0 |
| MSFT | 15.3% | 0.6% | 15.9% | 0 |
| META | 11.1% | 4.2% | 15.3% | 0 |
| GOOG | 0.7% | 8.4% | 9.1% | 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.