Stephen Mandel - Lone Pine Capital
As of Q2 2026, Stephen Mandel reported 34 long-equity positions worth $16.36B in aggregate.
Copy-investor backtest
- Latest quarter
- +4.81%
- 1-year
- +0.17%
- 3-year
- +87.28%
- 5-year
- +14.37%
- 3-year vs S&P 500
- +14.05%
- 5-year vs S&P 500
- -59.31%
- 5-year top 5
- +11.49%
Return from mechanically copying the disclosed 13F equity portfolio after each filing and rebalancing at the next. The vs S&P 500 figures subtract SPY over that manager's own rebalance dates, so both sides cover the same days; both are price return, excluding dividends. Method & limitations.
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Updated 2026-06-06 from SEC 13F data.
Live quotes available for 25 of 33 rows. Rows without a quote are marked unavailable.
| 1 | MSFT | MICROSOFT CORP | 6.52% | Add +3.5% | 12,504,471 | $1.23B | $98.61 | No quote |
| 2 | BABA | ALIBABA GROUP HLDG LTD | 6.27% | Add +6.9% | 6,394,697 | $1.19B | $185.53 | No quote |
| 3 | ATVI | ACTIVISION BLIZZARD INC | 5.75% | Reduce -2.0% | 14,257,637 | $1.09B | No quote | No quote |
| 4 | ADBE | ADOBE SYS INC | 5.75% | Reduce -21.1% | 4,456,362 | $1.09B | $243.81 | No quote |
| 5 | BKNG | BOOKING HLDGS INC | 5.69% | Add +4.6% | 531,060 | $1.08B | $2027.09 | No quote |
| 6 | UNH | UNITEDHEALTH GROUP INC | 5.35% | Reduce -3.1% | 4,121,415 | $1.01B | $245.34 | No quote |
| 7 | IQV | IQVIA HLDGS INC | 5.34% | Add +2.3% | 10,120,122 | $1.01B | $99.82 | No quote |
| 8 | EA | ELECTRONIC ARTS INC | 4.71% | Reduce -11.5% | 6,317,420 | $890.88M | $141.02 | No quote |
| 9 | STZ | CONSTELLATION BRANDS INC | 4.49% | Reduce -20.0% | 3,877,836 | $848.74M | $218.87 | No quote |
| 10 | CSX | CSX CORP | 4.45% | Reduce -1.3% | 13,192,235 | $841.4M | $63.78 | No quote |
| 11 | GOOG | ALPHABET INC | 3.88% | Add +1.2% | 657,803 | $733.88M | $1115.65 | No quote |
| 12 | TRU | TRANSUNION | 3.84% | Reduce -13.7% | 10,129,801 | $725.7M | $71.64 | No quote |
| 13 | AMZN | AMAZON COM INC | 3.82% | Reduce -26.5% | 424,704 | $721.91M | $1699.80 | No quote |
| 14 | META | FACEBOOK INC | 3.50% | Reduce -55.8% | 3,404,550 | $661.57M | $194.32 | No quote |
| 15 | MELI | MERCADOLIBRE INC | 3.43% | Add +33.8% | 2,172,531 | $649.44M | $298.93 | No quote |
| 16 | WYNN | WYNN RESORTS LTD | 3.36% | Add +68.0% | 3,798,454 | $635.63M | $167.34 | No quote |
| 17 | DLTR | DOLLAR TREE INC | 3.25% | Add +14.0% | 7,233,575 | $614.85M | $85.00 | No quote |
| 18 | TDG | TRANSDIGM GROUP INC | 3.22% | Add +24.9% | 1,761,813 | $608.07M | $345.14 | No quote |
| 19 | SBAC | SBA COMMUNICATIONS CORP NEW | 3.06% | Add +3.6% | 3,508,194 | $579.27M | $165.12 | No quote |
| 20 | PYPL | PAYPAL HLDGS INC | 2.78% | Reduce -40.7% | 6,320,681 | $526.32M | $83.27 | No quote |
| 21 | CP | CANADIAN PAC RY LTD | 2.77% | New | 2,861,578 | $523.73M | $183.02 | No quote |
| 22 | NOW | SERVICENOW INC | 2.75% | Add +12.6% | 3,014,253 | $519.87M | $172.47 | No quote |
| 23 | NVDA | NVIDIA CORP | 2.67% | New | 2,134,768 | $505.73M | $236.90 | No quote |
| 24 | FLT | FLEETCOR TECHNOLOGIES INC | 1.13% | Reduce -12.0% | 1,012,996 | $213.39M | No quote | No quote |
| 25 | SQ | SQUARE INC | 0.88% | - | 2,694,573 | $166.09M | No quote | No quote |
| 26 | MHK | MOHAWK INDS INC | 0.54% | New | 477,072 | $102.22M | $214.27 | No quote |
| 27 | PAGS | PAGSEGURO DIGITAL LTD | 0.47% | Add +75.0% | 3,189,119 | $88.5M | $27.75 | No quote |
| 28 | SE | SEA LTD | 0.31% | - | 3,963,222 | $59.45M | $15.00 | No quote |
| 33 | TSM | TAIWAN SEMICONDUCTOR MFG LTD | - | Sold | 0 | $0 | No quote | No quote |
| 32 | TMUS | T MOBILE US INC | - | Sold | 0 | $0 | No quote | No quote |
| 31 | EXAS | EXACT SCIENCES CORP | - | Sold | 0 | $0 | No quote | No quote |
| 30 | AVGO | BROADCOM LTD | - | Sold | 0 | $0 | No quote | No quote |
| 29 | BLK | BLACKROCK INC | - | Sold | 0 | $0 | No quote | No quote |