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Stephen Mandel Lone Pine Capital

AUM $16.4B
1-Year Est. Return 99.7%
 

Stephen Mandel founded Lone Pine Capital, a long/short equity firm that became one of the most influential Tiger Cub franchises. Lone Pine is known for fundamental research and growth-oriented equity investing with risk management through shorting and portfolio construction. Even as the firm’s structure has evolved over time, Mandel’s name remains closely associated with institutional growth investing.

This Fund
S&P 500
This Quarter Est. Return
+60.52%
1 Year Est. Return
+99.7%
3 Year Est. Return
+351.82%
5 Year Est. Return
+339.1%
10 Year Est. Return
+2,106.14%
AUM
$16.4B
AUM Growth
+$3.81B
Cap. Flow
+$80.4M
Cap. Flow %
0.49%
Top 10 Hldgs %
53.87%
Holding
49
New
13
Increased
8
Reduced
13
Closed
15

Top Buys

Rank Stock Value
1
HD icon
Home Depot
HD
+$847M
2
NBIS
Nebius Group N.V.
NBIS
+$843M
3
LIN icon
Linde
LIN
+$789M
4
STX icon
Seagate
STX
+$763M
5
AMAT icon
Applied Materials
AMAT
+$557M

Top Sells

Rank Stock Value
1
VST icon
Vistra
VST
+$930M
2
TLN
Talen Energy Corp
TLN
+$580M
3
TSM icon
TSMC
TSM
+$523M
4
CLH icon
Clean Harbors
CLH
+$503M
5
BN icon
Brookfield
BN
+$466M

Sector Composition

Rank Sector Weight
1 Technology 31.57%
2 Financials 14.54%
3 Consumer Discretionary 13.01%
4 Industrials 12.21%
5 Communication Services 10.94%

No holdings matched the selected filter criteria.

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Stephen Mandel's Q2 2026 Portfolio in Review

As of Q2 2026, Stephen Mandel held 49 positions worth $16.4B, up 30% from $12.5B the previous quarter. Its ten largest holdings account for 54% of the portfolio.

Stephen Mandel's Q2 2026 filing shows 13 new, 8 increased, 13 reduced and 15 closed positions. Its largest new stake was Home Depot: 2,603,189 shares worth $918M. The largest sale was Vistra, an estimated $930M.

By sector, the portfolio is most concentrated in Technology at 32% of assets, up from 25% a quarter earlier, followed by Financials and Consumer Discretionary.

  • Stephen Mandel's largest Q2 2026 buy was Home Depot: 2,603,189 shares worth $918M.
  • Stephen Mandel added most to Medline Inc in Q2 2026, an estimated $370M increase.
  • Stephen Mandel's biggest Q2 2026 reduction was TSMC, cutting an estimated $523M.
  • Stephen Mandel fully exited Vistra in Q2 2026, selling an estimated $930M.
  • Stephen Mandel's ten largest holdings make up 54% of its $16.4B portfolio in Q2 2026.
  • Stephen Mandel opened 13 new positions and closed 15 in Q2 2026.
  • Stephen Mandel's portfolio value rose 30% quarter-over-quarter to $16.4B.

Based on Lone Pine Capital's 13F filing for Q2 2026, filed 14 Aug 2026.