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 21 of 31 rows. Rows without a quote are marked unavailable.
| 1 | BABA | ALIBABA GROUP HLDG LTD | 8.25% | Add +52.2% | 9,732,169 | $1.6B | $164.76 | No quote |
| 2 | MSFT | MICROSOFT CORP | 8.08% | Add +9.9% | 13,737,471 | $1.57B | $114.37 | No quote |
| 3 | ADBE | ADOBE SYS INC | 7.53% | Add +21.7% | 5,424,771 | $1.46B | $269.95 | No quote |
| 4 | ATVI | ACTIVISION BLIZZARD INC | 6.91% | Add +13.2% | 16,138,688 | $1.34B | No quote | No quote |
| 5 | IQV | IQVIA HLDGS INC | 5.61% | Reduce -17.0% | 8,403,439 | $1.09B | $129.74 | No quote |
| 6 | GOOG | ALPHABET INC | 5.47% | Add +35.5% | 891,299 | $1.06B | $1193.47 | No quote |
| 7 | EA | ELECTRONIC ARTS INC | 4.87% | Add +24.4% | 7,855,868 | $946.55M | $120.49 | No quote |
| 8 | STZ | CONSTELLATION BRANDS INC | 4.78% | Add +11.2% | 4,311,764 | $929.7M | $215.62 | No quote |
| 9 | CP | CANADIAN PAC RY LTD | 4.25% | Add +36.2% | 3,896,747 | $825.88M | $211.94 | No quote |
| 10 | UNH | UNITEDHEALTH GROUP INC | 4.13% | Reduce -26.8% | 3,017,661 | $802.82M | $266.04 | No quote |
| 11 | WYNN | WYNN RESORTS LTD | 3.89% | Add +56.8% | 5,955,497 | $756.71M | $127.06 | No quote |
| 12 | TRU | TRANSUNION | 3.72% | Reduce -3.1% | 9,819,201 | $722.5M | $73.58 | No quote |
| 13 | AMZN | AMAZON COM INC | 3.59% | Reduce -17.9% | 348,814 | $698.67M | $2003.00 | No quote |
| 14 | CSX | CSX CORP | 3.59% | Reduce -28.5% | 9,430,475 | $698.33M | $74.05 | No quote |
| 15 | TDG | TRANSDIGM GROUP INC | 3.38% | Add +0.1% | 1,763,113 | $656.41M | $372.30 | No quote |
| 16 | META | FACEBOOK INC | 3.27% | Add +13.5% | 3,863,203 | $635.34M | $164.46 | No quote |
| 17 | NVDA | NVIDIA CORP | 3.23% | Add +4.7% | 2,235,268 | $628.16M | $281.02 | No quote |
| 18 | NOW | SERVICENOW INC | 3.19% | Add +5.1% | 3,166,637 | $619.49M | $195.63 | No quote |
| 19 | MELI | MERCADOLIBRE INC | 3.13% | Reduce -17.8% | 1,785,259 | $607.83M | $340.47 | No quote |
| 20 | FDC | FIRST DATA CORP NEW | 2.76% | New | 21,911,495 | $536.17M | No quote | No quote |
| 21 | UNP | UNION PAC CORP | 2.70% | New | 3,224,826 | $525.1M | $162.83 | No quote |
| 22 | PYPL | PAYPAL HLDGS INC | 2.69% | Reduce -5.7% | 5,962,509 | $523.75M | $87.84 | No quote |
| 23 | FLT | FLEETCOR TECHNOLOGIES INC | 0.59% | Reduce -50.2% | 504,075 | $114.85M | No quote | No quote |
| 24 | SE | SEA LTD | 0.28% | - | 3,963,222 | $54.81M | $13.83 | No quote |
| 25 | NIO | NIO INC | 0.09% | New | 3,736,290 | $18.07M | No quote | No quote |
| 31 | SQ | SQUARE INC | - | Sold | 0 | $0 | No quote | No quote |
| 30 | SBAC | SBA COMMUNICATIONS CORP NEW | - | Sold | 0 | $0 | No quote | No quote |
| 29 | PAGS | PAGSEGURO DIGITAL LTD | - | Sold | 0 | $0 | No quote | No quote |
| 28 | MHK | MOHAWK INDS INC | - | Sold | 0 | $0 | No quote | No quote |
| 27 | DLTR | DOLLAR TREE INC | - | Sold | 0 | $0 | No quote | No quote |
| 26 | BKNG | BOOKING HLDGS INC | - | Sold | 0 | $0 | No quote | No quote |