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Livermore
Livermore
ZHEN

Marshall Wace, LLP

SEC CIK
0001318757
Latest filing
Aug 13, 2026

WDC holding history

Western Digital Corp in every 13F filed by Marshall Wace, LLP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

WDC overviewAll 13F holders of WDCFull Q2 2026 holdings

Shares (Q2 2026)
400,306
Value
$255.7M
% of portfolio
0.2%
Quarters held
22
Since Q1 2021
Holdings of WDC by Marshall Wace, LLP, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026400,306$255.7M0.2%−531,017−57.0%ReducedHolders
Q1 2026931,323$251.9M0.3%+769,455+475.4%AddedHolders
Q4 2025161,868$27.9M<0.1%−160,528−49.8%ReducedHolders
Q3 2025322,396$38.7M<0.1%+275,724+590.8%AddedHolders
Q2 202546,672$2.99M<0.1%+12,872+38.1%AddedHolders
Q1 202533,800$1.37M<0.1%−462,526−93.2%ReducedHolders
Q4 2024496,326$29.6M<0.1%+207,406+71.8%AddedHolders
Q3 2024288,920$19.7M<0.1%−420,466−59.3%ReducedHolders
Q2 2024709,386$53.8M0.1%+534,168+304.9%AddedHolders
Q1 2024175,218$12.0M<0.1%−346,641−66.4%ReducedHolders
Q4 2023521,859$27.3M0.1%+262,066+100.9%AddedHolders
Q3 2023259,793$11.9M<0.1%+180,722+228.6%AddedHolders
Q2 202379,071$3.00M<0.1%−709,708−90.0%ReducedHolders
Q1 2023788,779$29.7M0.1%+759,192+2,566.0%AddedHolders
Q4 202229,587$933.5K<0.1%+7,915+36.5%AddedHolders
Q3 202221,672$705.0K<0.1%−1,862−7.9%ReducedHolders
Q2 202223,534$1.05M<0.1%+9,263+64.9%AddedHolders
Q1 202214,271$709.0K<0.1%−78,759−84.7%ReducedHolders
Q4 202193,030$6.07M<0.1%+86,812+1,396.1%AddedHolders
Q3 20216,218$351.0K<0.1%−91,004−93.6%ReducedHolders
Q2 202197,222$6.92M<0.1%−125,690−56.4%ReducedHolders
Q1 2021222,912$14.9M0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.