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Stephen Mandel - Lone Pine Capital
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    36
Portfolio value:    $12,543,849,391
Holdings Activity Buys Sells    History
Holding/activity history for  Biogen Inc. (BIIB)
← All BIIB superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2005   Q2 0 0.00 Sell 100.00% 0.64 $33.18–40.02 · VW $36.58i SEC
2005   Q1 962,500 0.64 Buy 0.64 $33.85–70.00 · VW $44.25i $33,216,000 SEC
Price snapshot:
Current price$209.03
52-week low$121.05
52-week high$219.72
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Quotes delayed 15 minutes for NASDAQ, NYSE and AMEX. 13F holdings sourced from SEC EDGAR filings.
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