Mason Hawkins - Southeastern Asset Management Inc
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    49
Portfolio value:    $2,032,773,449
Holdings Activity Buys Sells    History
Holding/activity history for  Biogen Inc. (BIIB)
Period Shares % of Portfolio Activity % Change to Portfolio Reported Price Value Filing
2022   Q2 0 0.00 Sell 100.00% 3.14 SEC
2022   Q1 842,962 3.14 Reduce 1.81% 0.06 $210.60 $177,528,000 SEC
2021   Q4 858,523 3.46 Buy 3.46 $239.92 $205,977,000 SEC
2021   Q2 0 0.00 Sell 100.00% 3.61 SEC
2021   Q1 603,890 3.61 Buy 3.61 $279.75 $168,939,000 SEC