% of shares outstanding not shown: no SEC cover-page share count falls within 120 days of the 2026-Q1 quarter end, so any percentage would rest on a count that cannot speak for this quarter. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for WHD in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 10.3M | 10.1M | 9.9M | 9.8M | 10.0M | 10.2M | $483M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | — | — | — | — | — | 4.2M | $197M |
| VANGUARD CAPITAL MANAGEMENT LLC | — | — | — | — | — | 3.1M | $146M |
| STATE STREET CORP | 2.8M | 2.8M | 2.8M | 2.8M | 2.8M | 3.0M | $144M |
| WELLINGTON MANAGEMENT GROUP LLP | 1.3M | 1.5M | 2.2M | 3.3M | 4.0M | 2.9M | $136M |
| T. Rowe Price Investment Management, Inc. | 2.8M | 2.9M | 2.7M | 2.8M | 2.8M | 2.7M | $128M |
| FMR LLC | 8.1M | 8.5M | 9.4M | 9.3M | 8.8M | 2.4M | $114M |
| FIRST TRUST ADVISORS LP | 1.6M | 1.3M | 1.3M | 1.6M | 1.8M | 2.1M | $99M |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8M | 1.9M | 1.9M | 1.9M | 2.0M | 2.0M | $94M |
| DIMENSIONAL FUND ADVISORS LP | 1.2M | 1.4M | 1.6M | 1.7M | 1.8M | 1.8M | $86M |
| Capital International Investors | 1.7M | 1.8M | 1.8M | 1.8M | 2.3M | 1.7M | $83M |
| JENNISON ASSOCIATES LLC | 570K | 508K | 633K | 660K | 567K | 1.7M | $81M |
| JPMORGAN CHASE & CO | 3.0M | 2.9M | 2.6M | 5.2M | 2.4M | 1.7M | $80M |
| Capital World Investors | — | — | — | — | — | 1.7M | $79M |
| Clearbridge Investments, LLC | 1.3M | 974K | 968K | 904K | 897K | 1.6M | $77M |
Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.
Short interest has its own tab now — open SI →
Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | +4,163,393 | $197M | OPEN |
| VANGUARD CAPITAL MANAGEMENT LLC | +3,075,398 | $146M | OPEN |
| Capital World Investors | +1,664,464 | $79M | OPEN |
| JENNISON ASSOCIATES LLC | +1,146,766 | $54M | ADD |
| DEPRINCE RACE & ZOLLO INC | +884,418 | $42M | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD GROUP INC | −7,557,198 | $358M | CLOSE |
| FMR LLC | −6,414,586 | $304M | TRIM |
| WELLINGTON MANAGEMENT GROUP LLP | −1,098,535 | $52M | TRIM |
| JPMORGAN CHASE & CO | −679,400 | $32M | TRIM |
| Balyasny Asset Management L.P. | −650,803 | $31M | TRIM |
The 2025-Q4 register is as-filed in ITS OWN share basis; every count below was rebased into the 2026-Q1 basis (no split in between, factor 1). Dollar figures value the SHARE delta at one price — the 2026-03-31 close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure.
13Fs disclose LONG US-listed positions only — shorts, most derivatives, bonds and non-US listings are invisible here, and a filer's quarter-over-quarter change is not necessarily a trade (index rebalances, in-kind transfers and entity successions all read as flow).
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 321 | 74,836,389 | — | $3.5B |
| 2025-Q4 | 286 | 74,432,580 | — | $3.4B |
| 2025-Q3 | 282 | 75,430,048 | — | $3.0B |
| 2025-Q2 | 318 | 73,582,300 | — | $3.2B |
| 2025-Q1 | 314 | 73,737,327 | — | $3.4B |
| 2024-Q4 | 314 | 74,948,596 | — | $4.4B |
| 2024-Q3 | 290 | 78,877,700 | — | $4.7B |
| 2024-Q2 | 263 | 84,229,708 | — | $4.4B |
| 2024-Q1 | 256 | 74,362,947 | — | $3.7B |
| 2023-Q4 | 262 | 71,352,585 | — | $3.2B |
| 2023-Q3 | 246 | 67,361,487 | — | $3.4B |
| 2023-Q2 | 222 | 68,230,121 | — | $2.9B |
| 2023-Q1 | 246 | 68,014,942 | — | $2.8B |
| 2022-Q4 | 241 | 63,022,888 | — | $3.1B |
| 2022-Q3 | 220 | 63,511,565 | — | $2.4B |
| 2022-Q2 | 213 | 63,400,705 | — | $2.6B |
| 2022-Q1 | 210 | 61,810,355 | — | $8.6B |
| 2021-Q4 | 187 | 61,208,143 | — | $2.3B |
| 2021-Q3 | 181 | 60,776,420 | — | $2.3B |
| 2021-Q2 | 183 | 58,480,577 | — | $2.1B |
| 2021-Q1 | 188 | 55,503,481 | — | $1.7B |
| 2020-Q4 | 181 | 48,172,726 | — | $1.3B |
| 2020-Q3 | 175 | 48,030,306 | — | $922M |
| 2020-Q2 | 164 | 48,565,866 | — | $1.0B |
| 2020-Q1 | 163 | 48,183,306 | — | $561M |
| 2019-Q4 | 167 | 50,033,181 | — | $1.7B |
| 2019-Q3 | 154 | 49,209,735 | — | $1.4B |
| 2019-Q2 | 179 | 48,548,417 | — | $1.6B |
| 2019-Q1 | 176 | 47,708,450 | — | $1.7B |
| 2018-Q4 | 131 | 39,465,194 | — | $1.1B |
| 2018-Q3 | 138 | 38,926,191 | — | $1.5B |
| 2018-Q2 | 104 | 28,511,660 | — | $963M |
| 2018-Q1 | 81 | 27,806,372 | — | $749M |
| QII |
| 2026-03-31 |
| SEC → |
Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).
