Caption Management, LLC

Position in BIIB — Biogen Inc.

CIK 1706766 OKLAHOMA CITY, OK

Back to BIIB Full portfolio

Position in BIIB

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$4,537,260

+$4,537,260 QoQ

Shares Held

21,000

Ownership

0.014%

of shares outstanding

% of Portfolio

0.18%

of 13F equity value

Holder Rank

#256

of 1,036 holders

Holding Since

Jun 2020

22 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in BIIB Over Time

Shares Held

Position Value (USD)

Derivatives in BIIB

reported options exposure · as of Jun 30, 2026

CallValue

$2,960,022

CallShares

13,700

PutValue

$10,803,000

PutShares

50,000

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 Jun 30, 2026

Caption Management, LLC holds $56,332,097 across 7 Drug Manufacturers - General names. BIIB ranks #6 (8.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	JNJ	Johnson & Johnson	60,000	$15,238,200
2	GILD	Gilead Sciences, Inc.	100,000	$12,634,000
3	LLY	ELI LILLY & Co	9,100	$10,914,813
4	AZN	Astrazeneca PLC	34,800	$6,598,776
5	NVO	Novo Nordisk A S	103,132	$4,944,148
6	BIIB	Biogen Inc. This page	21,000	$4,537,260
7	MRK	Merck & Co., Inc.	11,400	$1,464,900

All Filings in BIIB

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50 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,960,022	13,700	-31.5%	Call	Sole	2026-08-14
2026-06-30	$4,537,260	21,000	-60.4%	Shares	Sole	2026-08-14
2026-06-30	$10,803,000	50,000	+25.0%	Put	Sole	2026-08-14
2026-03-31	$7,333,200	40,000	+100.0%	Put	Sole	2026-05-15
2025-12-31	$3,519,800	20,000	-78.9%	Call	Sole	2026-02-17
2025-12-31	$9,327,470	53,000	+960.0%	Shares	Sole	2026-02-17
2025-12-31	$3,519,800	20,000	0.0%	Put	Sole	2026-02-17
2025-09-30	$13,307,600	95,000	+10.5%	Call	Sole	2025-11-14
2025-09-30	$2,801,600	20,000	+11.1%	Put	Sole	2025-11-14
2025-09-30	$700,400	5,000	-54.5%	Shares	Sole	2025-11-14
2025-06-30	$1,381,490	11,000	-20.7%	Shares	Sole	2025-08-14
2024-12-31	$2,752,560	18,000	0.0%	Put	Sole	2025-02-14
2024-12-31	$2,121,765	13,875	+679.5%	Shares	Sole	2025-02-14
2024-09-30	$345,035	1,780	-52.9%	Shares	Sole	2024-11-14
2024-09-30	$3,489,120	18,000	0.0%	Put	Sole	2024-11-14
2024-06-30	$876,279	3,780	-68.5%	Shares	Sole	2024-08-14
2024-06-30	$4,172,760	18,000	-89.7%	Put	Sole	2024-08-14
2023-12-31	$22,254,220	86,000	+855.6%	Call	Sole	2024-02-14
2023-09-30	$2,313,090	9,000	-60.9%	Call	Sole	2023-11-14
2023-06-30	$6,551,550	23,000	-88.9%	Call	Sole	2023-08-14
2022-12-31	$57,267,056	206,800	-48.8%	Call	Sole	2023-02-14
2022-12-31	$3,323,040	12,000	-84.1%	Shares	Sole	2023-02-14
2022-12-31	$48,267,156	174,300	-30.2%	Put	Sole	2023-02-14
2022-09-30	$66,696,600	249,800	+86.0%	Put	Sole	2022-11-14
2022-09-30	$107,921,400	404,200	+881.1%	Call	Sole	2022-11-14
2022-06-30	$27,389,142	134,300	+8.0%	Put	Sole	2022-08-15
2022-06-30	$15,366,063	75,346	+5.1%	Shares	Sole	2022-08-15
2022-06-30	$8,402,328	41,200	-19.5%	Call	Sole	2022-08-15
2022-03-31	$10,782,720	51,200	-71.1%	Call	Sole	2022-05-13
2022-03-31	$26,177,580	124,300	-64.1%	Put	Sole	2022-05-13
2022-03-31	$15,100,020	71,700	-69.5%	Shares	Sole	2022-05-13
2021-12-31	$42,537,816	177,300	-15.9%	Call	Sole	2022-02-11
2021-12-31	$83,156,272	346,600	+12.1%	Put	Sole	2022-02-11
2021-12-31	$56,381,200	235,000	+5.2%	Shares	Sole	2022-02-11
2021-09-30	$63,191,667	223,300	+31.9%	Shares	Sole	2021-11-12
2021-09-30	$87,500,508	309,200	+80.5%	Put	Sole	2021-11-12
2021-09-30	$59,682,591	210,900	+11.5%	Call	Sole	2021-11-12
2021-06-30	$58,624,896	169,304	+124.3%	Shares	Sole	2021-08-16
2021-06-30	$59,316,051	171,300	+241.2%	Put	Sole	2021-08-16
2021-06-30	$65,479,657	189,100	-37.2%	Call	Sole	2021-08-16
2021-03-31	$21,113,851	75,474	+489.6%	Shares	Sole	2021-05-17
2021-03-31	$84,204,750	301,000	+41.7%	Call	Sole	2021-05-17
2021-03-31	$14,043,450	50,200	+14.1%	Put	Sole	2021-05-17
2020-12-31	$52,008,264	212,400	+608.0%	Call	Sole	2021-02-16
2020-12-31	$10,773,840	44,000	-39.8%	Put	Sole	2021-02-16
2020-09-30	$8,510,400	30,000	-40.0%	Call	Sole	2020-11-16
2020-09-30	$20,737,008	73,100	+1600.0%	Put	Sole	2020-11-16
2020-09-30	$3,631,104	12,800	—	Shares	Sole	2020-11-16
2020-06-30	$13,377,500	50,000	—	Call	Sole	2020-08-14
2020-06-30	$1,150,465	4,300	—	Put	Sole	2020-08-14
No filing history on record for this holder in this stock.