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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Filing period

Updated 2026-06-06 from SEC 13F data.

Live quotes available for 29 of 39 rows. Rows without a quote are marked unavailable.


1	BABA	ALIBABA GROUP HLDG LTD	7.17%	Add +24.1%	7,292,562	$1.22B	$167.23	No quote
2	AMZN	AMAZON COM INC	6.35%	Add +33.3%	621,979	$1.08B	$1735.91	No quote
3	UNH	UNITEDHEALTH GROUP INC	5.79%	Add +20.1%	4,528,854	$984.21M	$217.32	No quote
4	ADBE	ADOBE INC	5.78%	Reduce -5.1%	3,553,638	$981.69M	$276.25	No quote
5	MSFT	MICROSOFT CORP	4.96%	Reduce -17.9%	6,059,549	$842.46M	$139.03	No quote
6	CRM	SALESFORCE COM INC	4.46%	Add +73.5%	5,104,760	$757.75M	$148.44	No quote
7	TDG	TRANSDIGM GROUP INC	3.93%	Reduce -19.0%	1,284,058	$668.57M	$520.67	No quote
8	ADSK	AUTODESK INC	3.92%	Add +13.0%	4,507,799	$665.8M	$147.70	No quote
9	NFLX	NETFLIX INC	3.71%	New	2,355,038	$630.26M	$267.62	No quote
10	ATVI	ACTIVISION BLIZZARD INC	3.50%	Add +8.9%	11,244,387	$595.05M	No quote	No quote
11	TIF	TIFFANY & CO NEW	3.48%	Reduce -2.9%	6,381,880	$591.15M	No quote	No quote
12	GPN	GLOBAL PMTS INC	3.42%	New	3,655,380	$581.21M	$159.00	No quote
13	DPZ	DOMINOS PIZZA INC	3.13%	Add +74.6%	2,177,742	$532.65M	$244.59	No quote
14	IQV	IQVIA HLDGS INC	3.12%	Reduce -42.6%	3,549,209	$530.18M	$149.38	No quote
15	SQ	SQUARE INC	2.92%	Add +141.7%	8,010,127	$496.23M	No quote	No quote
16	MA	MASTERCARD INC	2.57%	Reduce -3.8%	1,607,257	$436.48M	$271.57	No quote
17	EFX	EQUIFAX INC	2.54%	New	3,068,747	$431.68M	$140.67	No quote
18	NOW	SERVICENOW INC	2.54%	Add +29.4%	1,697,825	$430.99M	$253.85	No quote
19	SHOP	SHOPIFY INC	2.53%	Reduce -8.4%	1,377,171	$429.21M	$311.66	No quote
20	SPGI	S&P GLOBAL INC	2.49%	Reduce -10.7%	1,724,511	$422.47M	$244.98	No quote
21	UNP	UNION PACIFIC CORP	2.45%	Reduce -47.9%	2,569,779	$416.25M	$161.98	No quote
22	CP	CANADIAN PAC RY LTD	2.45%	Reduce -30.9%	1,870,085	$416.02M	$222.46	No quote
23	BKNG	BOOKING HLDGS INC	2.44%	Reduce -34.3%	211,257	$414.62M	$1962.61	No quote
24	HUM	HUMANA INC	2.39%	New	1,588,743	$406.19M	$255.67	No quote
25	META	FACEBOOK INC	2.04%	Reduce -35.1%	1,948,388	$346.97M	$178.08	No quote
26	MELI	MERCADOLIBRE INC	1.88%	Add +21.8%	580,417	$319.94M	$551.23	No quote
27	TEAM	ATLASSIAN CORP PLC	1.54%	Add +5392.1%	2,081,512	$261.11M	No quote	No quote
28	SE	SEA LTD	1.25%	Add +11.9%	6,862,222	$212.39M	$30.95	No quote
29	WWE	WORLD WRESTLING ENTMT INC	1.24%	Add +9.9%	2,959,183	$210.55M	No quote	No quote
30	COUP	COUPA SOFTWARE INC	1.06%	Add +113.9%	1,396,116	$180.9M	No quote	No quote
31	DHI	D R HORTON INC	1.03%	Reduce -73.2%	3,333,812	$175.73M	$52.71	No quote
32	CHWY	CHEWY INC	0.73%	Add +54.0%	5,071,531	$124.66M	$24.58	No quote
33	UBER	UBER TECHNOLOGIES INC	0.50%	-	3,001,420	$84.81M	$28.26	No quote
34	HLF	HERBALIFE NUTRITION LTD	0.47%	New	2,101,639	$79.57M	$37.86	No quote
35	MDLA	MEDALLIA INC	0.12%	New	737,593	$20.23M	No quote	No quote
36	SMAR	SMARTSHEET INC	0.11%	New	506,100	$18.24M	No quote	No quote
37	TWLO	TWILIO INC	0.01%	New	15,835	$1.74M	$109.95	No quote
39	WYNN	WYNN RESORTS LTD	-	Sold	0	$0	No quote	No quote
38	STNE	STONECO LTD	-	Sold	0	$0	No quote	No quote