There is a long list of 636 institutional holders of WDC within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of WDC by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-WDC table below, the initial column indicates the name of each top institutional holder of WDC, with a link to that fund's top holdings. The next columns indicate the amount of WDC stock held by each of the institutional holders of WDC, followed by the WDC position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Vanguard Group Inc.	38,579,938	$2,020,431	12/31/2023
WDC	38,579,938	$2,020,431	12/31/2023
BlackRock Inc.	27,406,158	$1,435,261	12/31/2023
WDC	27,406,158	$1,435,261	12/31/2023
Price T Rowe Associates Inc. MD	24,169,355	$1,265,750	12/31/2023
WDC	24,169,355	$1,265,750	12/31/2023
State Street Corp		$670,007	12/31/2023
WDC	12,741,489	$667,272	12/31/2023
NOTE 1	2,750,000	$2,735	12/31/2023
DNB Asset Management AS	7,650,830	$522,093	03/31/2024
WDC	7,650,830	$522,093	03/31/2024
Victory Capital Management Inc.		$521,803	12/31/2023
WDC	8,357,667	$437,691	12/31/2023
CONB	84,474,000	$84,112	12/31/2023
Millennium Management LLC		$515,265	12/31/2023
WDC	10,483,521	$549,022	12/31/2023
Put	1,151,600	$60,309	12/31/2023
Call	507,000	$26,552	12/31/2023
Nomura Holdings Inc.	8,771,915	$459,385	12/31/2023
WDC	8,771,915	$459,385	12/31/2023
Geode Capital Management LLC	7,418,652	$387,532	12/31/2023
WDC	7,418,652	$387,532	12/31/2023
Morgan Stanley		$360,964	12/31/2023
WDC	6,828,205	$357,593	12/31/2023
NOTE 1	3,385,000	$3,371	12/31/2023
Citadel Advisors LLC		$360,910	12/31/2023
WDC	6,899,353	$361,319	12/31/2023
Put	1,476,700	$77,335	12/31/2023
Call	1,468,900	$76,926	12/31/2023
UBS Group AG		$308,641	12/31/2023
WDC	5,743,085	$300,765	12/31/2023
Call	505,400	$26,468	12/31/2023
Put	355,100	$18,597	12/31/2023
NOTE 1	5,000	$5	12/31/2023
Balyasny Asset Management LLC		$264,139	12/31/2023
WDC	4,941,330	$258,777	12/31/2023
Call	120,000	$6,284	12/31/2023
Put	17,600	$922	12/31/2023
Maple Rock Capital Partners Inc.		$253,244	12/31/2023
WDC	2,835,670	$148,504	12/31/2023
Call	2,000,000	$104,740	12/31/2023
Slate Path Capital LP	4,777,500	$250,198	12/31/2023
WDC	4,777,500	$250,198	12/31/2023
Alliancebernstein L.P.	4,546,464	$238,098	12/31/2023
WDC	4,546,464	$238,098	12/31/2023
Invesco Ltd.	4,293,608	$224,856	12/31/2023
WDC	4,293,608	$224,856	12/31/2023
Point72 Asset Management L.P.		$221,287	12/31/2023
WDC	4,301,051	$225,246	12/31/2023
Put	75,600	$3,959	12/31/2023
Ameriprise Financial Inc.		$217,469	12/31/2023
WDC	4,148,858	$217,289	12/31/2023
CONV BND	181,000	$180	12/31/2023
Kodai Capital Management LP	4,065,310	$212,900	12/31/2023
WDC	4,065,310	$212,900	12/31/2023
Holocene Advisors LP	3,235,952	$169,467	12/31/2023
WDC	3,235,952	$169,467	12/31/2023
Artemis Investment Management LLP	2,471,433	$168,578	03/31/2024
WDC	2,471,433	$168,578	03/31/2024
Dimensional Fund Advisors LP	3,113,795	$163,086	12/31/2023
WDC	3,113,795	$163,086	12/31/2023
Charles Schwab Investment Management Inc.	3,096,993	$162,190	12/31/2023
WDC	3,096,993	$162,190	12/31/2023
Northern Trust Corp	3,083,195	$161,467	12/31/2023
WDC	3,083,195	$161,467	12/31/2023
Legal & General Group Plc	3,023,043	$158,317	12/31/2023
WDC	3,023,043	$158,317	12/31/2023
D. E. Shaw & Co. Inc.		$152,497	12/31/2023
WDC	2,733,336	$143,145	12/31/2023
Put	418,300	$21,906	12/31/2023
Call	302,200	$15,826	12/31/2023
NOTE	15,500,000	$15,432	12/31/2023
Norges Bank	2,882,525	$150,958	12/31/2023
WDC	2,882,525	$150,958	12/31/2023
Alyeska Investment Group L.P.	2,727,869	$142,858	12/31/2023
WDC	2,727,869	$142,858	12/31/2023
Bank of New York Mellon Corp	2,050,252	$139,909	03/31/2024
WDC	2,050,252	$139,909	03/31/2024
Jane Street Group LLC		$125,282	12/31/2023
Call	2,523,500	$132,156	12/31/2023
Put	901,500	$47,212	12/31/2023
WDC	770,253	$40,338	12/31/2023
UBS Asset Management Americas Inc.	2,336,579	$122,367	12/31/2023
WDC	2,336,579	$122,367	12/31/2023
Two Sigma Investments LP	2,093,821	$109,653	12/31/2023
WDC	2,093,821	$109,653	12/31/2023
FIL Ltd	1,975,903	$103,478	12/31/2023
WDC	1,975,903	$103,478	12/31/2023
BNP Paribas Arbitrage SA		$87,112	12/31/2023
WDC	1,737,605	$90,998	12/31/2023
Put	742	$3,886	12/31/2023
Clearbridge Investments LLC	1,657,815	$86,820	12/31/2023
WDC	1,657,815	$86,820	12/31/2023
CDAM UK Ltd	1,573,234	$82,390	12/31/2023
WDC	1,573,234	$82,390	12/31/2023
Voya Investment Management LLC	1,554,153	$81,391	12/31/2023
WDC	1,554,153	$81,391	12/31/2023
Primecap Management Co. CA	1,542,608	$80,786	12/31/2023
WDC	1,542,608	$80,786	12/31/2023
Two Sigma Advisers LP	1,433,900	$75,093	12/31/2023
WDC	1,433,900	$75,093	12/31/2023
Parnassus Investments CA	1,414,870	$74,097	12/31/2023
WDC	1,414,870	$74,097	12/31/2023
Schroder Investment Management Group		$69,822	12/31/2023
WDC	1,139,775	$59,690	12/31/2023
NOTE 1	10,250,000	$10,132	12/31/2023
Goldman Sachs Group Inc.		$69,118	12/31/2023
Call	1,488,600	$77,958	12/31/2023
Put	859,600	$45,017	12/31/2023
WDC	668,330	$35,000	12/31/2023
CNV	1,182,000	$1,177	12/31/2023
Susquehanna International Group LLP		$68,024	12/31/2023
Call	1,731,600	$90,684	12/31/2023
Put	779,400	$40,817	12/31/2023
WDC	259,214	$13,575	12/31/2023
NOTE 1	4,600,000	$4,582	12/31/2023
Hsbc Holdings PLC		$62,100	12/31/2023
WDC	1,217,933	$63,994	12/31/2023
Put	128,600	$6,767	12/31/2023
Call	92,600	$4,873	12/31/2023
Elliott Investment Management L.P.	1,185,000	$62,058	12/31/2023
WDC	1,185,000	$62,058	12/31/2023
Wells Fargo & Company MN		$59,396	12/31/2023
WDC	994,858	$52,101	12/31/2023
NOTE 1	7,328,000	$7,295	12/31/2023
Royal Bank of Canada		$59,174	12/31/2023
WDC	1,169,216	$61,231	12/31/2023
Put	100,000	$5,237	12/31/2023
NOTE 1	3,193,000	$3,180	12/31/2023
Bank of Montreal Can	1,091,314	$57,785	12/31/2023
WDC	1,091,314	$57,785	12/31/2023
Citigroup Inc.		$57,739	12/31/2023
WDC	1,027,515	$53,811	12/31/2023
Call	75,000	$3,928	12/31/2023