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Focused investors/Stephen Mandel

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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All activity

This tab shows every position the manager opened, added to, reduced, or exited compared with the prior quarter, so you can see exactly what changed. The quarter shown is Q2 2026.

TickerSecurityActivity% portfolioSharesValueReported priceQ range
YNDXNEBIUS GROUP N.V.New7.19%4,258,008$1.18B-
STXSEAGATE TECHNOLOGY HLDNGS PLNew5.90%1,000,109$965.11M$965.00$396.31 - $1145.00(76%)$423.12 -> $965.00
HDHOME DEPOT INCNew5.61%2,603,189$918.09M$352.68$289.10 - $353.55(99%)$329.56 -> $352.68
AMATAPPLIED MATLS INCNew5.34%1,207,737$873.19M$723.00$337.25 - $739.67(96%)$353.80 -> $726.85
LINLINDE PLCNew4.94%1,558,081$808.55M$518.94$482.77 - $527.94(80%)$493.83 -> $518.94
TSMTAIWAN SEMICONDUCTOR MANUFACReduce -92.7%0.30%101,242$48.35M$477.57$326.80 - $479.00(99%)$341.49 -> $477.57
CRSCARPENTER TECHNOLOGY CORPReduce -47.0%3.63%962,839$593.92M$616.84$382.18 - $624.49(97%)$404.32 -> $616.44
TTMITTM TECHNOLOGIES INCNew3.13%2,738,075$512.07M$187.02$89.70 - $223.83(73%)$97.08 -> $187.02
STRLSTERLING INFRASTRUCTURE INCNew3.13%609,643$511.71M$839.36$362.59 - $1005.68(74%)$421.29 -> $839.36
ONONON HLDG AGNew2.88%13,280,030$470.38M$35.42$31.62 - $41.41(39%)$34.77 -> $35.42
BNBROOKFIELD CORPReduce -92.9%0.21%792,717$33.76M$42.59$39.66 - $48.60(33%)$40.74 -> $42.60
MDLNMEDLINE INCAdd +77.9%5.06%20,968,367$826.99M$39.44$32.82 - $49.13(41%)$44.00 -> $39.44
GLWCORNING INCReduce -26.6%4.26%2,728,058$696.83M$255.43$136.35 - $271.78(88%)$142.38 -> $255.43
MCKMCKESSON CORPReduce -85.3%0.27%57,851$43.71M$755.60$723.68 - $887.25(20%)$872.32 -> $755.60
LPLALPL FINL HLDGS INCReduce -40.5%2.10%1,219,099$343.4M$281.68$260.15 - $339.99(27%)$289.27 -> $281.68
APPAPPLOVIN CORPReduce -28.9%3.28%1,042,268$537.01M$515.23$364.64 - $622.00(59%)$387.84 -> $516.43
PFGCPERFORMANCE FOOD GROUP COAdd +47.1%4.00%5,852,740$654.28M$111.79$82.00 - $112.72(97%)$84.24 -> $111.79
TERTERADYNE INCReduce -20.3%4.42%1,493,080$722.41M$483.84$290.00 - $487.91(98%)$312.20 -> $483.84
ASMLASML HLDG NVReduce -13.1%6.92%569,174$1.13B$1989.44$1272.21 - $1999.96(99%)$1359.76 -> $1990.62
BTDRBITDEER TECHNOLOGIES GROUPNew0.68%7,020,026$111.41M$15.87$8.75 - $20.72(59%)$9.34 -> $15.87
SHAZSHARONAI HOLDINGS INCNew0.63%1,209,848$102.43M$84.66$22.54 - $97.48(83%)$27.62 -> $84.66
KGSKODIAK GAS SVCS INCNew0.39%845,070$63.49M$75.13-
IBKRINTERACTIVE BROKERS GROUP INNew0.31%577,666$50.28M$87.04$65.40 - $97.83(67%)$67.91 -> $87.04
SESEA LTDNew0.29%494,581$47.4M$95.83$79.00 - $99.97(80%)$82.16 -> $95.83
APHAMPHENOL CORPSold0$0-
BKNGBOOKING HOLDINGS INCSold0$0-
BSXBOSTON SCIENTIFIC CORPSold0$0-
COFCAPITAL ONE FINL CORPSold0$0-
CIENCIENA CORPSold0$0-
CLHCLEAN HARBORS INCSold0$0-
ENTGENTEGRIS INCSold0$0-
HLTHILTON WORLDWIDE HLDGS INCSold0$0-
KKRKKR & CO INCSold0$0-
MAMASTERCARD INCORPORATEDSold0$0-
SPOTSPOTIFY TECHNOLOGY S ASold0$0-
TLNTALEN ENERGY CORPSold0$0-
THCTENET HEALTHCARE CORPSold0$0-
VSTVISTRA CORPSold0$0-
VMCVULCAN MATLS COSold0$0-
NUNU HLDGS LTDAdd +24.2%3.86%47,219,717$630.86M$13.36$11.20 - $15.81(47%)$14.44 -> $13.36
CVNACARVANA COAdd +19.9%5:1 split4.23%10,520,666$692.47M$65.82$58.94 - $83.91(28%)$62.42 -> $65.81
USFDUS FOODS HLDG CORPAdd +29.5%3.07%4,914,492$502.51M$102.25$79.52 - $102.62(98%)$90.83 -> $102.25
WULFTERAWULF INCAdd +21.2%3.65%24,144,625$596.37M$24.70$13.47 - $29.84(69%)$14.48 -> $24.70
MTZMASTEC INCReduce -12.1%3.42%1,345,157$559.67M$416.06$322.42 - $441.43(79%)$333.79 -> $416.06
HUTHUT 8 CORPReduce -5.0%4.07%5,773,045$666.47M$115.44$44.21 - $140.80(74%)$47.36 -> $115.44
VVISA INCAdd +78.9%0.35%165,960$56.94M$343.09$293.89 - $345.80(95%)$298.51 -> $343.09
AGXARGAN INCReduce -6.2%1.80%368,673$294.4M$798.55$546.76 - $805.75(97%)$571.38 -> $796.34
GOOGLALPHABET INCAdd +14.9%0.47%215,574$77.04M$357.37$289.45 - $408.61(57%)$297.39 -> $357.37
TDGTRANSDIGM GROUP INCReduce -20.0%0.23%28,532$38.01M$1332.04$1123.61 - $1361.77(88%)$1173.27 -> $1332.04