WESTERN DIGITAL CORP

Ticker: WDC CUSIP: 958102105 Class: EQTY

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 161,868 Value ($000) $27,885 Avg Close $151.55 Range $112.43 - $188.77
Q3 2025
Shares 322,396 Value ($000) $38,707 Avg Close $81.60 Range $62.82 - $122.49
Q2 2025
Shares 46,672 Value ($000) $2,987 Avg Close $47.46 Range $28.72 - $64.21
Q1 2025
Shares 33,800 Value ($000) $1,367 Avg Close $47.25 Range $38.95 - $54.41
Q4 2024
Shares 496,326 Value ($000) $29,596 Avg Close $50.08 Range $44.29 - $55.80
Q3 2024
Shares 288,920 Value ($000) $19,730 Avg Close $50.34 Range $39.73 - $60.52
Q2 2024
Shares 709,386 Value ($000) $53,750 Avg Close $55.25 Range $49.12 - $61.40
Q1 2024
Shares 175,218 Value ($000) $11,957 Avg Close $43.62 Range $36.87 - $52.17
Q4 2023
Shares 521,859 Value ($000) $27,330 Avg Close $34.87 Range $26.82 - $40.07
Q3 2023
Shares 259,793 Value ($000) $11,854 Avg Close $31.42 Range $27.45 - $35.31
Q2 2023
Shares 79,071 Value ($000) $2,999 Avg Close $27.71 Range $24.07 - $31.23
Q1 2023
Shares 788,779 Value ($000) $29,713 Avg Close $29.22 Range $23.31 - $34.06
Q4 2022
Shares 29,587 Value ($000) $933 Avg Close $26.28 Range $22.39 - $30.85
Q3 2022
Shares 21,672 Value ($000) $705 Avg Close $33.07 Range $23.76 - $38.36
Q2 2022
Shares 23,534 Value ($000) $1,055 Avg Close $40.01 Range $32.99 - $47.63
Q1 2022
Shares 14,271 Value ($000) $709 Avg Close $40.89 Range $33.02 - $52.23
Q4 2021
Shares 93,030 Value ($000) $6,065 Avg Close $43.29 Range $37.27 - $50.63
Q3 2021
Shares 6,218 Value ($000) $351 Avg Close $47.33 Range $41.77 - $54.33
Q2 2021
Shares 97,222 Value ($000) $6,919 Avg Close $53.87 Range $48.26 - $58.87
Q1 2021
Shares 222,912 Value ($000) $14,879 Avg Close $46.58 Range $36.61 - $54.95
Q4 2020
Shares 144,827 Value ($000) $8,022 Avg Close $33.07 Range $26.57 - $42.13
Q4 2019
Shares 2 Value ($000) $0 Avg Close $40.69 Range $34.40 - $46.90
Q2 2018
Shares 28,889 Value ($000) $2,236 Avg Close $58.47 Range $52.75 - $64.87
Q2 2017
Shares 21,349 Value ($000) $1,900 Avg Close $59.68 Range $54.65 - $64.49
Q4 2016
Shares 127,587 Value ($000) $8,670 Avg Close $40.87 Range $34.90 - $48.23
Q3 2016
Shares 4,736 Value ($000) $277 Avg Close $33.13 Range $28.62 - $40.10
Q1 2016
Shares 62,714 Value ($000) $2,963 Avg Close $30.76 Range $25.11 - $39.62
Q4 2015
Shares 66,101 Value ($000) $3,970 Avg Close $43.55 Range $37.34 - $55.67
Q3 2015
Shares 255,945 Value ($000) $20,332 Avg Close $50.91 Range $43.42 - $56.60
Q2 2015
Shares 40,149 Value ($000) $3,149 Avg Close $60.27 Range $50.11 - $64.90
Q1 2015
Shares 39,349 Value ($000) $3,581 Avg Close $65.44 Range $57.41 - $72.02
Q4 2014
Shares 76,709 Value ($000) $8,491 Avg Close $62.96 Range $52.21 - $72.28
Q3 2014
Shares 306,295 Value ($000) $29,809 Avg Close $62.41 Range $58.43 - $64.97
Q2 2014
Shares 231,559 Value ($000) $21,373 Avg Close $55.43 Range $50.48 - $59.36
Q1 2014
Shares 112,647 Value ($000) $10,343 Avg Close $53.80 Range $50.34 - $57.78