Current Value of Holding

$2.88B

Shares

14.8M

% of Portfolio

1.78%

Average Buy Price

$170

Avg closing price
Price range

53 PRIMECAP Management Biogen Trades

PRIMECAP Management's position in Biogen is currently worth $2.88B. That's 1.78% of their equity portfolio (13th largest holding). The investor owns 9.96% of the outstanding Biogen stock. The first Biogen trade was made in Q1 2013. Since then PRIMECAP Management bought shares twelve more times and sold shares on 40 occasions. The stake costed the investor $2.51B, netting the investor a gain of 15% so far.

Avg closing price
Price range
Sold 0.0% shares (-390 shares) Q1 2026
Avg closing price $181.70
Price range $164.42 - $201.18
Sold 1.3% shares (-197k shares) Q4 2025
Avg closing price $163.66
Price range $142.26 - $182.09
Sold 5.4% shares (-847k shares) Q3 2025
Avg closing price $135.09
Price range $122.68 - $148.89
Sold 0.9% shares (-141k shares) Q2 2025
Avg closing price $124.57
Price range $113.38 - $135.49
Sold 0.6% shares (-103k shares) Q1 2025
Avg closing price $142.96
Price range $133.43 - $153.27
Sold 1.6% shares (-269k shares) Q4 2024
Avg closing price $167.98
Price range $146.06 - $191.56
Sold 0.1% shares (-23.2k shares) Q3 2024
Avg closing price $209.38
Price range $189.07 - $236.80
Increased shares by 0.7% (+118k shares) Q2 2024
Avg closing price $217.32
Price range $190.52 - $236.72
Sold 0.3% shares (-43.8k shares) Q1 2024
Avg closing price $234.20
Price range $212.02 - $267.71
Increased shares by 1.6% (+252k shares) Q4 2023
Avg closing price $245.62
Price range $222.59 - $267.94
Sold 0.1% shares (-13.3k shares) Q3 2023
Avg closing price $267.47
Price range $253.30 - $285.89
Increased shares by 0.2% (+24.7k shares) Q2 2023
Avg closing price $297.68
Price range $275.25 - $318.06
Increased shares by 1.9% (+301k shares) Q1 2023
Avg closing price $276.70
Price range $256.56 - $292.34
Sold 0.3% shares (-41.1k shares) Q4 2022
Avg closing price $282.44
Price range $253.67 - $306.72
Increased shares by 0.1% (+15.2k shares) Q3 2022
Avg closing price $212.38
Price range $194.69 - $276.61
Sold 0.7% shares (-108k shares) Q2 2022
Avg closing price $204.43
Price range $187.54 - $223.02
Increased shares by 0.5% (+77.2k shares) Q1 2022
Avg closing price $217.46
Price range $193.77 - $244.14
Sold 3.1% shares (-502k shares) Q4 2021
Avg closing price $257.12
Price range $223.92 - $287.77
Sold 1.2% shares (-200k shares) Q3 2021
Avg closing price $327.75
Price range $282.99 - $369.05
Sold 1.8% shares (-300k shares) Q2 2021
Avg closing price $302.94
Price range $259.00 - $414.71

News about Biogen Inc and PRIMECAP Management

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