SUSQUEHANNA INTERNATIONAL GROUP, LLP

Position in BIIB — Biogen Inc.

CIK 1446194 BALA CYNWYD, PA

Back to BIIB Full portfolio

Position in BIIB

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$25,721,015

-$90,728,752 QoQ

Shares Held

140,299

-78.8% QoQ

Ownership

0.095%

of shares outstanding

% of Portfolio

0.04%

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

$90,785,016

CallShares

495,200

PutValue

$146,425,671

PutShares

798,700

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

SUSQUEHANNA INTERNATIONAL GROUP, LLP holds $1,324,749,837 across 17 Drug Manufacturers - General names. BIIB ranks #11 (1.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	NVO	Novo Nordisk A S	11,106,111	$408,149,579
2	JNJ	Johnson & Johnson	844,082	$206,327,404
3	GILD	Gilead Sciences, Inc.	1,032,658	$143,921,545
4	MRK	Merck & Co., Inc.	1,033,222	$124,286,274
5	AMGN	Amgen Inc	317,913	$111,857,689
6	ABBV	AbbVie Inc.	431,015	$93,741,451
7	LLY	ELI LILLY & Co	78,552	$72,249,773
8	BMY	Bristol Myers Squibb Co	600,889	$36,443,917

All Filings in BIIB

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50 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$25,721,015	140,299	-82.4%	Shares	Other	2026-05-15
2026-03-31	$146,425,671	798,700	+61.3%	Put	Other	2026-05-15
2026-03-31	$90,785,016	495,200	-29.4%	Call	Other	2026-05-15
2025-12-31	$123,509,782	701,800	-26.4%	Call	Other	2026-02-17
2025-12-31	$167,806,465	953,500	+44.1%	Put	Other	2026-02-17
2025-12-31	$116,449,767	661,684	-27.2%	Shares	Other	2026-02-17
2025-09-30	$127,318,712	908,900	+21.8%	Put	Other	2025-11-14
2025-09-30	$104,513,688	746,100	+69.2%	Call	Other	2025-11-14
2025-09-30	$61,786,765	441,082	-37.5%	Shares	Other	2025-11-14
2025-06-30	$88,578,627	705,300	+18.7%	Call	Other	2025-08-14
2025-06-30	$74,612,892	594,099	-42.5%	Shares	Other	2025-08-14
2025-06-30	$129,872,619	1,034,100	+83.6%	Put	Other	2025-08-14
2025-03-31	$77,081,972	563,300	+109.9%	Call	Other	2025-05-14
2025-03-31	$36,724,023	268,372	-76.3%	Shares	Other	2025-05-14
2025-03-31	$154,683,936	1,130,400	+113.6%	Put	Other	2025-05-14
2024-12-31	$80,940,556	529,300	+9.1%	Put	Other	2025-02-14
2024-12-31	$74,173,539	485,048	+15.7%	Shares	Other	2025-02-14
2024-12-31	$64,104,064	419,200	-2.7%	Call	Other	2025-02-14
2024-09-30	$83,506,272	430,800	+65.0%	Put	Defined	2024-11-14
2024-09-30	$50,620,734	261,147	+8.5%	Shares	Defined	2024-11-14
2024-09-30	$46,637,904	240,600	+103.5%	Call	Defined	2024-11-14
2024-06-30	$27,406,454	118,223	-63.3%	Shares	Defined	2024-08-15
2024-06-30	$74,646,040	322,000	-7.3%	Put	Defined	2024-08-15
2024-06-30	$80,487,904	347,200	-6.5%	Call	Defined	2024-08-15
2024-03-31	$80,106,545	371,500	-29.3%	Call	Defined	2024-05-07
2024-03-31	$113,356,691	525,700	+116.0%	Put	Defined	2024-05-07
2024-03-31	$52,487,360	243,414	-52.6%	Shares	Defined	2024-05-07
2023-12-31	$132,956,026	513,800	-13.5%	Put	Defined	2024-02-14
2023-12-31	$153,761,134	594,200	+656.1%	Call	Defined	2024-02-14
2023-12-31	$20,336,733	78,590	-87.6%	Shares	Defined	2024-02-14
2023-09-30	$162,918,639	633,900	+465.6%	Call	Defined	2023-11-14
2023-09-30	$28,804,908	112,077	-69.9%	Shares	Defined	2023-11-14
2023-09-30	$95,607,720	372,000	-48.4%	Put	Defined	2023-11-14
2023-06-30	$205,291,395	720,700	+46.4%	Call	Defined	2023-08-11
2023-06-30	$140,231,655	492,300	+1169.4%	Put	Defined	2023-08-11
2023-06-30	$11,046,767	38,781	-95.7%	Shares	Defined	2023-08-11
2023-03-31	$247,891,548	891,600	+16.6%	Call	Defined	2023-05-16
2023-03-31	$212,553,935	764,500	+748.3%	Put	Defined	2023-05-16
2023-03-31	$25,055,506	90,118	-91.7%	Shares	Defined	2023-05-16
2022-12-31	$299,572,056	1,081,800	+399.1%	Call	Defined	2023-02-14
2022-12-31	$60,018,810	216,737	-84.3%	Shares	Defined	2023-02-14
2022-12-31	$383,174,204	1,383,700	-4.5%	Put	Defined	2023-02-14
2022-09-30	$386,722,800	1,448,400	+771.3%	Call	Defined	2022-11-14
2022-09-30	$44,385,279	166,237	-89.4%	Shares	Defined	2022-11-14
2022-09-30	$419,830,800	1,572,400	+1430.5%	Put	Defined	2022-11-14
2022-06-30	$20,951,774	102,735	-89.0%	Shares	Defined	2022-08-15
2022-06-30	$191,030,598	936,700	+6.6%	Call	Defined	2022-08-15
2022-06-30	$179,140,896	878,400	+224.9%	Put	Defined	2022-08-15
2022-03-31	$56,938,236	270,362	-68.8%	Shares	Defined	2022-05-16
2022-03-31	$182,379,600	866,000	—	Call	Defined	2022-05-16
No filing history on record for this holder in this stock.