PRIMECAP Management BIIB Holdings History
PRIMECAP Management's Biogen Inc Holding Summary
As of 2026-06-30, PRIMECAP Management held 15.15 Mil shares of Biogen Inc(BIIB), totaling $3.27 Bil. This investment constitutes 1.94% of their stock portfolio, and PRIMECAP Management now holds 10.26% of the outstanding Biogen Inc(BIIB) stock.
The initial trade took place in 2009Q1. And since then PRIMECAP Management has made 18 purchases of BIIB, at an average price of $75.52, for a total of 32.64 Mil shares. In addition, there have been 51 sales at an average price of $173.32 for 17.49 Mil shares. Based on historical transaction data and BIIB's current price of $225.43, PRIMECAP Management's estimated gain on his BIIB holdings is $3.98 Bil, reflecting a 161.52% gain to date.
PRIMECAP Management BIIB ($225.43) Holding Chart
PRIMECAP Management BIIB ($225.43) Quarterly Buys and Sells
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Avrg. Price |
|---|---|---|---|---|
| Shares Bought | 0 | Average Price $-/Share | ||
| Shares Sold | 0 | Average Price $-/Share | ||
| Current Price $0.00 | Total Estimated Gain 0 % | |||
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