CITIGROUP INC

Position in WDC — Western Digital Corp

CIK 831001 NEW YORK, NY

Back to WDC Full portfolio

Position in WDC

as of Mar 31, 2026 · filed May 11, 2026 Compact

Position Value

$154,853,631

-$79,297,302 QoQ

Shares Held

572,493

-57.9% QoQ

Ownership

0.166%

of shares outstanding

% of Portfolio

0.12%

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 WDC Over Time

Shares Held

Position Value (USD)

Derivatives in WDC

reported options exposure · as of Mar 31, 2026

CallValue

$15,688,420

CallShares

58,000

PutValue

$4,057,350

PutShares

15,000

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 Computer Hardware

Technology · as of Mar 31, 2026

CITIGROUP INC holds $922,993,998 across 25 Computer Hardware names. WDC ranks #3 (16.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ANET	Arista Networks, Inc.	1,476,468	$181,280,739
2	SNDK	Sandisk Corp	262,494	$166,772,937
3	WDC	Western Digital Corp This page	572,493	$154,853,631
4	STX	Seagate Technology Holdings plc	336,563	$131,851,919
5	DELL	Dell Technologies Inc.	598,017	$98,152,528
6	SMCI	Super Micro Computer, Inc.	2,802,094	$63,803,679
7	LOGI	Logitech International S.A.	697,829	$63,586,176
8	HPQ	Hp Inc	2,166,266	$41,613,969

All Filings in WDC

Export CSV

50 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$4,057,350	15,000	-97.4%	Put	Defined	2026-05-11
2026-03-31	$154,853,631	572,493	+887.1%	Shares	Defined	2026-05-11
2026-03-31	$15,688,420	58,000	-31.8%	Call	Defined	2026-05-11
2025-12-31	$14,642,950	85,000	-93.7%	Put	Defined	2026-02-13
2025-12-31	$234,150,933	1,359,209	+341.3%	Shares	Defined	2026-02-13
2025-12-31	$53,059,160	308,000	-39.6%	Call	Defined	2026-02-13
2025-09-30	$61,230,600	510,000	+3.6%	Put	Defined	2025-11-10
2025-09-30	$59,129,550	492,500	-72.4%	Call	Defined	2025-11-10
2025-09-30	$214,287,047	1,784,833	+494.9%	Shares	Defined	2025-11-10
2025-06-30	$19,197,000	300,000	+20.0%	Call	Defined	2025-08-11
2025-06-30	$15,997,500	250,000	-84.2%	Put	Defined	2025-08-11
2025-06-30	$100,960,989	1,577,762	+1647.2%	Shares	Defined	2025-08-11
2025-03-31	$3,650,829	90,300	+80.6%	Call	Defined	2025-05-12
2025-03-31	$2,021,500	50,000	-95.2%	Put	Defined	2025-05-12
2025-03-31	$41,837,851	1,034,822	+508.7%	Shares	Defined	2025-05-12
2024-12-31	$7,662,206	170,000	-69.4%	Call	Defined	2025-02-12
2024-12-31	$25,047,117	555,716	+1011.4%	Shares	Defined	2025-02-12
2024-12-31	$2,253,590	50,000	-91.8%	Put	Defined	2025-02-12
2024-09-30	$31,591,095	612,023	+260.0%	Shares	Defined	2024-11-12
2024-09-30	$8,774,975	170,000	+240.0%	Call	Defined	2024-11-12
2024-09-30	$2,580,875	50,000	-85.0%	Put	Defined	2024-11-12
2024-06-30	$19,071,376	333,000	-66.4%	Put	Defined	2024-08-12
2024-06-30	$56,727,205	990,498	+407.9%	Shares	Defined	2024-08-12
2024-06-30	$11,167,923	195,000	-67.9%	Call	Defined	2024-08-12
2024-03-31	$31,370,773	608,200	+13.8%	Call	Defined	2024-05-10
2024-03-31	$27,557,999	534,280	+543.7%	Shares	Defined	2024-05-10
2024-03-31	$4,281,115	83,000	+10.7%	Put	Defined	2024-05-10
2023-12-31	$2,968,822	75,000	-92.7%	Call	Defined	2024-02-09
2023-12-31	$40,673,459	1,027,515	+324.1%	Shares	Defined	2024-02-09
2023-09-30	$8,356,427	242,287	+223.0%	Shares	Defined	2023-12-06
2023-09-30	$2,586,735	75,000	-80.7%	Call	Defined	2023-12-06
2023-06-30	$11,133,559	388,339	+232.2%	Shares	Defined	2023-08-10
2023-06-30	$3,351,487	116,900	-72.3%	Call	Defined	2023-08-10
2023-03-31	$12,035,988	422,713	+6.2%	Shares	Defined	2023-05-11
2023-03-31	$11,338,028	398,200	-33.0%	Call	Defined	2023-05-11
2022-12-31	$14,172,375	594,297	+130.2%	Shares	Defined	2023-02-09
2022-12-31	$6,157,372	258,200	+186.9%	Call	Defined	2023-02-09
2022-09-30	$2,214,288	90,000	-82.8%	Put	Defined	2022-11-10
2022-09-30	$12,900,783	524,354	+482.6%	Shares	Defined	2022-11-10
2022-06-30	$3,049,659	90,000	-82.3%	Put	Defined	2022-08-10
2022-06-30	$17,219,253	508,166	+505.0%	Shares	Defined	2022-08-10
2022-06-30	$2,846,348	84,000	-86.9%	Call	Defined	2022-08-10
2022-03-31	$24,132,308	643,043	+0.5%	Shares	Defined	2022-05-12
2022-03-31	$24,018,112	640,000	+72.5%	Put	Defined	2022-05-12
2021-12-31	$18,286,404	371,000	-23.4%	Put	Defined	2022-02-10
2021-12-31	$23,865,332	484,187	+18.4%	Shares	Defined	2022-02-10
2021-09-30	$17,441,442	408,842	+14.2%	Shares	Defined	2021-11-10
2021-09-30	$15,272,494	358,000	+1093.3%	Put	Defined	2021-11-10
2021-09-30	$1,279,818	30,000	0.0%	Call	Defined	2021-11-10
2021-06-30	$1,613,832	30,000	—	Call	Defined	2021-08-10
No filing history on record for this holder in this stock.