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AlphaBaseline
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

Full auditCompare with peers
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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Sectors

This breakdown groups the manager’s latest reported 13F holdings by industry sector, so you can see where their conviction is concentrated and how diversified the portfolio is.

Technology: 31.6% ($5.16B)Financial Services: 14.5% ($2.38B)Consumer Cyclical: 13.0% ($2.13B)Industrials: 12.2% ($2B)Unclassified: 7.2% ($1.18B)Consumer Defensive: 7.1% ($1.16B)Healthcare: 5.3% ($870.7M)Basic Materials: 4.9% ($808.55M)Communication Services: 3.8% ($614.05M)Energy: 0.4% ($63.49M)

Sector breakdown

  • Technology(9)31.6%
  • Financial Services(7)14.5%
  • Consumer Cyclical(4)13.0%
  • Industrials(5)12.2%
  • Unclassified(1)7.2%
  • Consumer Defensive(2)7.1%
  • Healthcare(2)5.3%
  • Basic Materials(1)4.9%
  • Communication Services(2)3.8%
  • Energy(1)0.4%