Who owns WK (WK)
Which tracked institutional funds hold WK, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See WK company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
56 tracked funds added or opened WK while 154 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
WK’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes WK more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in WK divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 316 tracked filers holding WK, 161 increased or opened the position and 197 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in WK between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 20
- VANGUARD PORTFOLIO MANAGEMENT LLC$236M
- Jericho Capital Asset Management L.P.$147M
- VANGUARD CAPITAL MANAGEMENT LLC$135M
- HAWK RIDGE CAPITAL MANAGEMENT LP$65M
- VANGUARD FIDUCIARY TRUST CO$21M
- GOLDENTREE ASSET MANAGEMENT LP$21M
Full exits 29
- VANGUARD GROUP INC$533M
- NORDEA INVESTMENT MANAGEMENT AB$111M
- Assenagon Asset Management S.A.$64M
- T. Rowe Price Investment Management, Inc.$28M
- Jain Global LLC$19M
- Aberdeen Group plc$19M
Largest adds
- Topline Capital Management, LLC$38M
- Squarepoint Ops LLC$31M
- GOLDMAN SACHS GROUP INC$23M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$15M
- Qube Research & Technologies Ltd$14M
- TWO SIGMA INVESTMENTS, LP$12M
Largest trims
- BlackRock, Inc.$245M
- EMINENCE CAPITAL, LP$169M
- UBS Group AG$123M
- MORGAN STANLEY$91M
- RIVERBRIDGE PARTNERS LLC$61M
- PRICE T ROWE ASSOCIATES INC /MD/$58M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 3,955,667 | $236M | 6.3% | 2026-Q1 |
| EMINENCE CAPITAL, LP trimmed | 2,519,889 | $150M | 4.0% | 2026-Q1 |
| Jericho Capital Asset Management L.P. new | 2,465,745 | $147M | 3.9% | 2026-Q1 |
| BlackRock, Inc. trimmed | 2,316,753 | $138M | 3.7% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,256,903 | $135M | 3.6% | 2026-Q1 |
| FMR LLC added | 1,785,115 | $106M | 2.8% | 2026-Q1 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC added | 1,679,788 | $100M | 2.7% | 2026-Q1 |
| STATE STREET CORP added | 1,275,923 | $76M | 2.0% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,227,309 | $73M | 1.9% | 2026-Q1 |
| EDMOND DE ROTHSCHILD HOLDING S.A. added | 1,221,561 | $73M | 1.9% | 2026-Q1 |
| UBS Group AG trimmed | 1,127,988 | $67M | 1.8% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 1,109,646 | $66M | 1.8% | 2026-Q1 |
| HAWK RIDGE CAPITAL MANAGEMENT LP added | 1,091,582 | $65M | 1.7% | 2026-Q1 |
| Topline Capital Management, LLC added | 1,050,090 | $63M | 1.7% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 922,167 | $55M | 1.5% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 862,936 | $51M | 1.4% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 811,530 | $48M | 1.3% | 2026-Q1 |
| Conestoga Capital Advisors, LLC trimmed | 754,553 | $45M | 1.2% | 2026-Q1 |
| NORGES BANK trimmed | 587,735 | $45M | 1.2% | 2026-Q1 |
| MAIRS & POWER INC trimmed | 715,640 | $43M | 1.1% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 692,255 | $41M | 1.1% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 656,603 | $39M | 1.0% | 2026-Q1 |
| RIVERBRIDGE PARTNERS LLC trimmed | 651,243 | $39M | 1.0% | 2026-Q1 |
| Squarepoint Ops LLC added | 592,004 | $35M | 0.9% | 2026-Q1 |
| Irenic Capital Management LP | 552,010 | $33M | 0.9% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 539,042 | $32M | 0.9% | 2026-Q1 |
| LOOMIS SAYLES & CO L P added | 514,936 | $31M | 0.8% | 2026-Q1 |
| Nuveen, LLC trimmed | 487,928 | $29M | 0.8% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 482,556 | $29M | 0.8% | 2026-Q1 |
| TimesSquare Capital Management, LLC trimmed | 446,365 | $27M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 427,159 | $25M | 0.7% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 394,941 | $24M | 0.6% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 363,333 | $22M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 360,522 | $21M | 0.6% | 2026-Q1 |
| GOLDENTREE ASSET MANAGEMENT LP new | 358,248 | $21M | 0.6% | 2026-Q1 |
| Ranger Investment Management, L.P. added | 342,185 | $20M | 0.5% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 331,967 | $20M | 0.5% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 307,289 | $18M | 0.5% | 2026-Q1 |
| MORGAN STANLEY trimmed | 302,275 | $18M | 0.5% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 273,687 | $16M | 0.4% | 2026-Q1 |
| Lakehouse Capital Pty Ltd added | 184,108 | $16M | 0.4% | 2026-Q1 |
| Tetragon Partners GP Ltd added | 250,000 | $15M | 0.4% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 238,441 | $14M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 227,426 | $14M | 0.4% | 2026-Q1 |
| Pembroke Management, LTD trimmed | 224,900 | $13M | 0.4% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 223,336 | $13M | 0.4% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 209,140 | $12M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 191,022 | $11M | 0.3% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 179,581 | $11M | 0.3% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 173,155 | $10M | 0.3% | 2026-Q1 |
| Trexquant Investment LP added | 169,574 | $10M | 0.3% | 2026-Q1 |
| Impax Asset Management Group plc added | 162,086 | $10M | 0.3% | 2026-Q1 |
| Private Wealth Asset Management, LLC trimmed | 158,000 | $9M | 0.3% | 2026-Q1 |
| Praesidium Investment Management Company, LLC added | 150,409 | $9M | 0.2% | 2026-Q1 |
| BROWN CAPITAL MANAGEMENT LLC trimmed | 148,997 | $9M | 0.2% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 138,514 | $8M | 0.2% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. added | 135,843 | $8M | 0.2% | 2026-Q1 |
| Ensign Peak Advisors, Inc added | 134,977 | $8M | 0.2% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 133,600 | $8M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 127,439 | $8M | 0.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 127,380 | $8M | 0.2% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 120,211 | $7M | 0.2% | 2026-Q1 |
| FIFTH THIRD BANCORP added | 117,295 | $7M | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 114,759 | $7M | 0.2% | 2026-Q1 |
| CYPRESS POINT INVESTMENT MANAGEMENT LP new | 102,698 | $6M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 98,521 | $6M | 0.2% | 2026-Q1 |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC trimmed | 95,921 | $6M | 0.2% | 2026-Q1 |
| Siren, L.L.C. added | 92,500 | $6M | 0.1% | 2026-Q1 |
| Summit Creek Advisors LLC trimmed | 91,169 | $5M | 0.1% | 2026-Q1 |
| Man Group plc trimmed | 90,607 | $5M | 0.1% | 2026-Q1 |
| Jefferies Financial Group Inc. trimmed | 86,500 | $5M | 0.1% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 85,762 | $5M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 59,279 | $5M | 0.1% | 2026-Q1 |
| KING LUTHER CAPITAL MANAGEMENT CORP added | 83,561 | $5M | 0.1% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC trimmed | 80,850 | $5M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 6,182,155 | $533M | 14.2% | 2025-Q4 stale |
| MACQUARIE GROUP LTD added | 1,743,391 | $133M | 3.5% | 2025-Q3 stale |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 1,290,923 | $111M | 2.9% | 2025-Q4 stale |
| Assenagon Asset Management S.A. added | 740,102 | $64M | 1.7% | 2025-Q4 stale |
| Artisan Partners Limited Partnership added | 658,523 | $50M | 1.3% | 2025-Q1 stale |
| T. Rowe Price Investment Management, Inc. trimmed | 319,993 | $28M | 0.7% | 2025-Q4 stale |
| SILVERCREST ASSET MANAGEMENT GROUP LLC added | 298,134 | $26M | 0.7% | 2025-Q3 stale |
| Jain Global LLC added | 221,786 | $19M | 0.5% | 2025-Q4 stale |
| Aberdeen Group plc trimmed | 218,382 | $19M | 0.5% | 2025-Q4 stale |
| Point72 Asset Management, L.P. trimmed | 216,310 | $19M | 0.5% | 2025-Q4 stale |
| AXA Investment Managers S.A. new | 153,098 | $13M | 0.3% | 2025-Q3 stale |
| COMERICA BANK added | 151,317 | $13M | 0.3% | 2025-Q4 stale |
| Tensile Capital Management LP trimmed | 189,742 | $13M | 0.3% | 2025-Q2 stale |
| Thrivent Financial for Lutherans trimmed | 157,363 | $12M | 0.3% | 2025-Q1 stale |
| OBERWEIS ASSET MANAGEMENT INC/ new | 127,500 | $11M | 0.3% | 2025-Q4 stale |
| AXA S.A. added | 158,960 | $11M | 0.3% | 2025-Q2 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 135,958 | $9M | 0.2% | 2025-Q2 stale |
| FRED ALGER MANAGEMENT, LLC new | 111,870 | $8M | 0.2% | 2025-Q1 stale |
| SummitTX Capital, L.P. new | 99,051 | $8M | 0.2% | 2025-Q1 stale |
| PANAGORA ASSET MANAGEMENT INC added | 85,664 | $7M | 0.2% | 2025-Q4 stale |
| California Public Employees Retirement System added | 83,805 | $7M | 0.2% | 2025-Q4 stale |
| FLPUTNAM INVESTMENT MANAGEMENT CO added | 81,391 | $7M | 0.2% | 2025-Q4 stale |
| CIBC Private Wealth Group LLC trimmed | 78,416 | $7M | 0.2% | 2025-Q4 stale |
| Susquehanna Portfolio Strategies, LLC | 71,132 | $6M | 0.2% | 2025-Q4 stale |
| Madison Avenue Partners, LP new | 59,946 | $5M | 0.1% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.