Marshall Wace’s Western Digital WDC Stock Holding History

Marshall Wace’s Portfolio WDC Stock Details WDC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$8.81M	Sell	13,800 -8,100	-37%	-$3.94M	0.01%	1091
2026 Q1	$5.92M	Sell	21,900 -4,900	-18%	-$1.28M	0.01%	1219
2025 Q4	$4.62M	Buy	26,800 +26,600	+13,300%	+$4.03M	﹤0.01%	1191
2025 Q3	$24K	Buy	+200	New	+$16.3K	﹤0.01%	2778
2022 Q1	–	Sell	-78,454	Closed	-$3.87M	–	4084
2021 Q4	$3.87M	Buy	78,454 +78,057	+19,662%	+$3.39M	0.01%	1567
2021 Q3	$17K	Buy	397 +265	+201%	+$12.6K	﹤0.01%	2958
2021 Q2	$7K	Buy	+132	New	+$7.14K	﹤0.01%	2588

Other funds holding WDC

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Marshall Wace's WDC Position: Q2 2026 in Review

Marshall Wace reduced its Western Digital (WDC) stake by 57% in Q2 2026, selling an estimated $258M and leaving 400,306 shares worth $256M. The position accounts for 0.2% of the portfolio, ranked #71.

Marshall Wace first reported a position in WDC in Q1 2014 and has held it in 37 quarters since. 1,848 funds tracked by Wall St. Rank hold WDC as of Q2 2026.

Marshall Wace held 400,306 shares of Western Digital worth $256M as of Q2 2026.
Marshall Wace sold 531,017 Western Digital shares in Q2 2026, an estimated $258M.
Western Digital made up 0.2% of Marshall Wace's portfolio in Q2 2026, its #71 holding.
Marshall Wace first reported a position in Western Digital in Q1 2014 and has held it in 37 quarters since.
1,848 funds tracked by Wall St. Rank held Western Digital as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.