MASSACHUSETTS FINANCIAL SERVICES CO /MA/
Position in WDC — Western Digital Corp
CIK 912938
Boston, MA
Position in WDC
as of Jun 30, 2026
· filed Aug 3, 2026
Position Value
$113,930,398
+$63,750,177 QoQ
Shares Held
178,373
-3.9% QoQ
Ownership
0.049%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
#160
of 1,836 holders
Holding Since
Mar 2020
17 quarters on record
Voting authority
Sole 88%
Shared 7%
None 4%
Common Shares in WDC Over Time
Shares Held
Position Value (USD)
Position in Computer Hardware
Technology · as of Jun 30, 2026MASSACHUSETTS FINANCIAL SERVICES CO /MA/ holds $4,842,509,190 across 7 Computer Hardware names. WDC ranks #4 (2.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | STX |
Seagate Technology Holdings plc
|
2,560,276 | $2,470,666,340 | |
| 2 | ANET |
Arista Networks, Inc.
|
9,725,196 | $1,652,116,292 | |
| 3 | SNDK |
Sandisk Corp
|
249,714 | $567,782,210 | |
| 4 | WDC |
Western Digital Corp
This page
|
178,373 | $113,930,398 | |
| 5 | CRSR |
Corsair Gaming, Inc.
|
2,017,225 | $19,506,565 | |
| 6 | DELL |
Dell Technologies Inc.
|
40,677 | $17,550,497 | |
| 7 | QBTS |
D-Wave Quantum Inc.
|
39,887 | $956,888 |
All Filings in WDC
Export CSV
17 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $113,930,398 | 178,373 | Shares | Defined | 2026-08-03 | |
| 2026-03-31 | $50,180,221 | 185,516 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $2,401,787 | 13,942 | Shares | Sole | 2026-01-22 | |
| 2023-06-30 | $742,062 | 19,564 | Shares | Sole | 2023-08-09 | |
| 2023-03-31 | $701,265 | 18,616 | Shares | Sole | 2023-05-10 | |
| 2022-12-31 | $598,692 | 18,976 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $571,708 | 17,564 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $779,279 | 17,383 | Shares | Sole | 2022-08-09 | |
| 2022-03-31 | $746,884 | 15,043 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $934,002 | 14,323 | Shares | Sole | 2022-02-10 | |
| 2021-09-30 | $1,404,282 | 24,881 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $1,988,489 | 27,940 | Shares | Sole | 2021-08-13 | |
| 2021-03-31 | $2,050,425 | 30,718 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $1,480,465 | 26,728 | Shares | Sole | 2021-05-12 | |
| 2020-09-30 | $1,030,307 | 28,189 | Shares | Sole | 2020-11-12 | |
| 2020-06-30 | $1,335,624 | 30,252 | Shares | Sole | 2020-11-20 | |
| 2020-03-31 | $1,162,196 | 27,924 | Shares | Sole | 2020-11-20 | |
| No filing history on record for this holder in this stock. | ||||||