PRIMECAP Management BIIB Holdings History
PRIMECAP Management's Biogen Inc Holding Summary
As of 2026-03-31, PRIMECAP Management held 14.76 Mil shares of Biogen Inc(BIIB), totaling $2.71 Bil. This investment constitutes 2.13% of their stock portfolio, and PRIMECAP Management now holds 10% of the outstanding Biogen Inc(BIIB) stock.
The initial trade took place in 2009Q1. And since then PRIMECAP Management has made 17 purchases of BIIB, at an average price of $74.10, for a total of 32.25 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 $207.94, PRIMECAP Management's estimated gain on his BIIB holdings is $3.71 Bil, reflecting a 155.28% gain to date.
PRIMECAP Management BIIB ($207.94) Holding Chart
PRIMECAP Management BIIB ($207.94) 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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