O'SHAUGHNESSY ASSET MANAGEMENT, LLC

CIK
1423442
City
Stamford
State / Country
CT

Top Portfolio Positions

1,657 positions · $17,697,362,381 total · as of Mar 31, 2026
Ticker Company Shares Value (USD) % of Portfolio Open

Portfolio Trend

43 quarters · across all stocks

Holdings in BIIB

Export CSV

Shares Held

Position Value (USD)

25 quarters on record
Report Date Value (USD) Shares
2026-03-31 $25,908,928 141,324
2025-12-31 $19,406,065 110,268
2025-09-30 $8,403,259 59,989
2025-06-30 $3,555,704 28,312
2025-03-31 $338,815 2,476
2024-12-31 $255,376 1,670
2024-09-30 $697,048 3,596
2024-06-30 $1,120,154 4,832
2024-03-31 $849,582 3,940
2023-12-31 $970,905 3,752
2023-09-30 $1,337,223 5,203
2023-06-30 $1,465,553 5,145
2023-03-31 $1,361,234 4,896
2022-12-31 $1,432,784 5,174
2022-09-30 $12,791,436 47,908
2022-06-30 $15,281,631 74,932
2022-03-31 $13,055,936 61,994
2021-12-31 $19,748,295 82,312
2021-09-30 $25,271,289 89,301
2021-06-30 $32,408,101 93,592
2021-03-31 $37,217,100 133,037
2020-12-31 $36,739,773 150,044
2020-09-30 $64,147,140 226,125
2020-06-30 $35,531,710 132,804
2020-03-31 $32,958,253 104,173