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WDC — WESTERN DIGITAL CORP

Reported value held$42.84B
Funds holding (latest)60
SectorTechnology

Index member: Invesco QQQ Trust · S&P 500

Funds holding (Q2 2026)50
Institutional value$35.03B · 99.00M sh
New / Add / Cut / Exit3 / 14 / 31 / 1
Top-5 / Top-10 concentration58.1% / 82.2%
Institutional holdings change Reducing -61.4% (-157.57M sh)
Institutional value change Up +124.4%

As of Q2 2026, 50 SEC-registered investment managers reported holding WDC (WESTERN DIGITAL CORP) in their latest 13F filings, with a combined reported value of $35.03B across 99.00M shares. That is -61.4% by share count (-157.57M shares) versus the previous quarter, while reported value moved +124.4%. Ownership is concentrated: the five largest holders account for 58.1% of reported value and the top ten for 82.2%.

Compared with the prior quarter, 3 opened new positions, 14 added to existing stakes, 31 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

WDC is a constituent of the Invesco QQQ Trust, S&P 500 and is classified in the Technology sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
Vanguard Group history Q4 2025 42.35M $7.30B 0.11% Reduce
Citadel Advisors history Q2 2026 8.76M $5.59B 0.66% Reduce
Geode Capital Management history Q2 2026 8.41M $5.35B 0.29% Reduce
Goldman Sachs Group history Q2 2026 6.41M $4.09B 0.37% Add
Norges Bank Investment Management history Q2 2026 4.63M $2.96B 0.29% Add
Northern Trust Corp history Q2 2026 3.66M $2.34B 0.27% Add
AQR Capital Management history Q2 2026 2.94M $1.88B 0.66% Reduce
D. E. Shaw & Co history Q2 2026 2.87M $1.83B 0.96% Reduce
Capital Research Global Investors history Q2 2026 2.82M $1.80B 0.26% Reduce
Legal & General Investment Management America history Q2 2026 2.51M $1.60B 0.34% Add
Charles Schwab Investment Management history Q2 2026 2.13M $1.36B 0.18% Reduce
Deutsche Bank AG history Q2 2026 1.39M $885.56M 0.27% Reduce
National Pension Service of Korea history Q2 2026 1.38M $882.01M 0.57% Reduce
Millennium Management history Q2 2026 991.46K $633.27M 0.24% Add
Principal Global Investors history Q2 2026 685.24K $437.66M 0.21% Add
Renaissance Technologies history Q2 2026 537.47K $343.29M 0.47% Reduce
Marshall Wace history Q2 2026 448.71K $286.60M 0.23% Reduce
CPP Investments history Q2 2026 425.17K $271.57M 0.15% Add
Prudential Financial history Q2 2026 408.97K $261.22M 0.28% Reduce
Whale Rock Capital Management history Q2 2026 400.69K $255.93M 2.06% Reduce

View all 60 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
Citadel Advisors 3.94M 2.38M 3.76M 3.98M 3.57M 4.07M 2.75M 10.00M 6.47M 9.84M 9.90M 9.78M 7.07M 50.00M 88.00M 68.00M 73.50M 90.80M 97.27M 8.76M
Geode Capital Management 5.96M 6.31M 6.41M 6.52M 6.65M 6.81M 6.83M 7.04M 7.17M 7.42M 7.66M 7.84M 7.92M 8.75M 9.12M 9.31M 9.41M 9.28M 9.48M 8.41M
Goldman Sachs Group 3.92M 3.80M 882.37K 593.40K 3.44M 1.22M 36.00K 2.60M 2.68M 1.18M 2.42M 2.47M 2.03M 2.23M 1.23M 4.36M 2.37M 5.11M 5.96M 6.41M
Norges Bank Investment Management — — — — — 2.82M — — — 2.88M — 5.87M — 5.91M — 3.45M — 4.58M — 4.63M
Northern Trust Corp 3.26M 3.23M 3.20M 3.26M 3.16M 3.24M 3.26M 3.18M 3.27M 3.08M 3.02M 3.01M 2.92M 3.40M 3.45M 3.42M 3.81M 3.67M 3.61M 3.66M
AQR Capital Management 511.21K 550.63K 1.72M 2.28M 696.07K 207.87K 123.40K 67.66K 10.09K 15.37K 22.13K 83.25K 274.74K 251.82K 447.43K 1.23M 1.74M 2.97M 3.46M 2.94M
D. E. Shaw & Co 51.07M 63.11M 29.86M 696.26K 948.20K 1.49M 636.13K 1.02M 536.78K 15.50M 3.14M 3.85M 1.71M 19.25M 595.90K 3.30M 141.94M 154.44M 3.93M 2.87M
Capital Research Global Investors — — — — — — — — — — — — — — — — — — 3.31M 2.82M
Legal & General Investment Management America 2.44M 2.43M 2.57M 2.74M 2.65M 2.52M 2.53M 2.62M 2.66M 3.02M 3.00M 3.09M 3.39M 2.51M 2.60M 1.91M 2.10M 2.03M 2.13M 2.51M
Charles Schwab Investment Management 2.32M 2.41M 2.54M 2.59M 2.67M 2.85M 2.91M 2.96M 3.03M 3.10M 3.12M 3.14M 2.26M 2.38M 2.37M 2.43M 2.37M 2.27M 2.21M 2.13M
Deutsche Bank AG 970.79K 696.34K 909.28K 7.22M 7.39M 11.39M 9.39M 11.65M 994.32K 7.53M 950.53K 1.11M 1.28M 1.63M 3.37M 2.20M 3.04M 2.23M 1.87M 1.39M
National Pension Service of Korea 625.87K 693.86K 716.11K 742.04K 718.13K 292.15K 89.44K 587.31K 567.86K 567.86K 528.54K 500.46K 854.80K 862.39K 354.35K 354.35K 460.18K 1.69M 1.44M 1.38M
Millennium Management 12.50K 20.00K 14.50K 15.24K 13.47K 6.91M 11.22M 8.55M 8.31M 12.14M 5.56M 5.51M 3.06M 57.00M 795.65K 835.04K 1.61M 774.71K 734.05K 991.46K
Principal Global Investors 387.51K 379.59K 385.41K 394.24K 389.81K 381.62K 391.05K 367.13K 704.88K 796.78K 744.08K 512.34K 375.64K 390.83K 391.66K 551.41K 817.06K 992.73K 676.04K 685.24K
Renaissance Technologies — 265.93K 1.45M — 114.08K 104.48K 470.83K — — 487.13K 340.13K — 1.22M 912.13K 69.93K 201.83K 1.15M 992.53K 1.15M 537.47K
Marshall Wace 10.82K 320.13K 14.27K 23.53K 21.67K 29.59K 788.78K 79.07K 259.79K 521.86K 175.22K 709.39K 288.92K 496.33K 33.80K 471.37K 324.30K 231.27K 969.02K 448.71K
CPP Investments 21 10 138.56K 3.01K 400.00K — — 310.93K 323.60K 90.07K 1.07M 136.00K — — 1.26M 35.95K 324.76K 382.21K 334.01K 425.17K
Prudential Financial 1.51M 1.25M 375.23K 542.90K 449.74K 404.92K 370.53K 319.37K 276.08K 230.56K 322.05K 377.40K 205.06K 185.86K 182.87K 230.83K 464.03K 1.02M 616.64K 408.97K
Whale Rock Capital Management — — — — — — — — — — — — — — — — — — 412.01K 400.69K
Fidelity Management & Research (FMR) 2.74M 2.71M 1.82M 1.64M 2.53M 2.05M 1.47M 1.40M 1.10M 523.30K 4.35M 20.57M 18.95M 24.30M 22.72M 37.06M 24.59M 25.42M 19.91M 14.70M

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