T. Rowe Price Investment Management, Inc.

CIK
1897612
City
BALTIMORE
State / Country
MD

Top Portfolio Positions

628 positions · $141,436,685,557 total · as of Mar 31, 2026
Ticker Company Shares Value (USD) % of Portfolio Open

Portfolio Trend

15 quarters · across all stocks

Holdings in BIIB

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Shares Held

Position Value (USD)

12 quarters on record
Report Date Value (USD) Shares
2026-03-31 $212,844,113 1,160,989
2025-12-31 $206,067,922 1,170,907
2025-09-30 $149,532,878 1,067,482
2025-06-30 $175,132,240 1,394,476
2025-03-31 $364,034,083 2,660,290
2024-12-31 $474,019,275 3,099,786
2024-09-30 $825,038,478 4,256,286
2024-06-30 $1,316,473,093 5,678,859
2024-03-31 $1,114,800,631 5,169,970
2023-12-31 $1,386,315,249 5,357,326
2023-09-30 $1,222,080,236 4,754,991
2023-06-30 $968,225,089 3,399,070