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CITIGROUP INC

Position in BIIB — Biogen Inc.

CIK 831001 NEW YORK, NY

Position in BIIB

as of Mar 31, 2026 · filed May 11, 2026
Position Value
$91,757,947
-$9,232,858 QoQ
Shares Held
500,507
-12.8% QoQ
Ownership
0.339%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in BIIB Over Time

Shares Held

Position Value (USD)

Derivatives in BIIB

reported options exposure · as of Mar 31, 2026
CallValue
$3,886,596
CallShares
21,200
PutValue
$0
PutShares
0

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Drug Manufacturers - General

Healthcare · as of Mar 31, 2026

CITIGROUP INC holds $4,719,307,282 across 18 Drug Manufacturers - General names. BIIB ranks #10 (1.9% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in BIIB

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $3,886,596 21,200
2026-03-31 $91,757,947 500,507
2025-12-31 $13,920,809 79,100
2025-12-31 $100,990,805 573,844
2025-12-31 $2,569,454 14,600
2025-09-30 $11,080,328 79,100
2025-09-30 $28,338,042 202,299
2025-09-30 $2,045,168 14,600
2025-06-30 $1,833,614 14,600
2025-06-30 $9,934,169 79,100
2025-06-30 $28,036,709 223,240
2025-03-31 $4,036,780 29,500
2025-03-31 $41,409,834 302,615
2025-03-31 $12,862,960 94,000
2024-12-31 $40,422,717 264,339
2024-12-31 $4,098,256 26,800
2024-12-31 $25,124,756 164,300
2024-09-30 $46,162,606 238,148
2024-09-30 $930,432 4,800
2024-09-30 $620,288 3,200
2024-06-30 $51,776,301 223,347
2024-06-30 $4,219,124 18,200
2024-06-30 $4,590,036 19,800
2024-03-31 $47,161,943 218,717
2024-03-31 $1,035,024 4,800
2024-03-31 $690,016 3,200
2023-12-31 $10,790,709 41,700
2023-12-31 $57,098,373 220,653
2023-12-31 $12,446,837 48,100
2023-09-30 $17,168,268 66,800
2023-09-30 $20,612,202 80,200
2023-09-30 $56,994,020 221,758
2023-06-30 $15,609,780 54,800
2023-06-30 $66,911,831 234,902
2023-06-30 $11,450,970 40,200
2023-03-31 $63,937,444 229,966
2023-03-31 $9,174,990 33,000
2023-03-31 $18,071,950 65,000
2022-12-31 $54,505,052 196,826
2022-12-31 $6,230,700 22,500
2022-09-30 $15,352,500 57,500
2022-09-30 $10,680,000 40,000
2022-09-30 $68,141,070 255,210
2022-06-30 $37,998,709 186,323
2022-06-30 $5,098,500 25,000
2022-03-31 $43,336,845 205,778
2021-12-31 $14,635,120 61,000
2021-12-31 $91,825,538 382,734
2021-09-30 $17,262,390 61,000
2021-09-30 $76,597,749 270,673