Who owns WB (WB)
Which tracked institutional funds hold WB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See WB 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
The tracked-fund tape on WB is one-sided between 2025-Q4 and 2026-Q1: 14 added or opened and 47 trimmed or exited — on balance reducing.
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
WB’s largest tracked holder by dollar value, Alibaba Group Holding Ltd, sizes it at 12.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 12.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in WB 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 143 tracked filers holding WB, 63 increased or opened the position and 82 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 WB 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 5
- Long Corridor Asset Management Ltd$5M
- E Fund Management Co., Ltd.$3M
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$747K
- Squarepoint Ops LLC$570K
- HRT FINANCIAL LP$500K
Full exits 8
- TWO SIGMA ADVISERS, LP$7M
- Grantham, Mayo, Van Otterloo & Co. LLC$7M
- Alpine Investment Management Ltd$4M
- Redhawk Wealth Advisors, Inc.$1M
- MARSHALL WACE, LLP$996K
- SCHRODER INVESTMENT MANAGEMENT GROUP$963K
Largest adds
- TWO SIGMA INVESTMENTS, LP$4M
- WELLINGTON MANAGEMENT GROUP LLP$4M
- SEI INVESTMENTS CO$837K
- Saba Capital Management, L.P.$733K
- Vident Advisory, LLC$592K
- AIA Group Ltd$585K
Largest trims
- Alibaba Group Holding Ltd$13M
- ACADIAN ASSET MANAGEMENT LLC$11M
- Krane Funds Advisors LLC$10M
- UBS Group AG$10M
- CAUSEWAY CAPITAL MANAGEMENT LLC$7M
- Qube Research & Technologies Ltd$5M
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 |
|---|---|---|---|---|
| Alibaba Group Holding Ltd | 9,000,000 | $79M | 15.2% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 5,565,675 | $49M | 9.4% | 2026-Q1 |
| Krane Funds Advisors LLC trimmed | 3,820,295 | $34M | 6.5% | 2026-Q1 |
| CAUSEWAY CAPITAL MANAGEMENT LLC trimmed | 2,666,202 | $23M | 4.5% | 2026-Q1 |
| Saba Capital Management, L.P. added | 2,437,357 | $21M | 4.1% | 2026-Q1 |
| FIL Ltd added | 1,799,371 | $16M | 3.0% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,698,350 | $15M | 2.9% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,572,095 | $14M | 2.7% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 1,556,213 | $14M | 2.6% | 2026-Q1 |
| STATE STREET CORP trimmed | 899,437 | $8M | 1.5% | 2026-Q1 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 791,297 | $7M | 1.3% | 2026-Q1 |
| UBS Group AG trimmed | 732,256 | $6M | 1.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 724,228 | $6M | 1.2% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 706,076 | $6M | 1.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 670,093 | $6M | 1.1% | 2026-Q1 |
| Quinn Opportunity Partners LLC | 638,745 | $6M | 1.1% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 635,256 | $6M | 1.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 584,557 | $5M | 1.0% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 563,949 | $5M | 1.0% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 536,188 | $5M | 0.9% | 2026-Q1 |
| Long Corridor Asset Management Ltd added | 530,000 | $5M | 0.9% | 2026-Q1 |
| Invesco Ltd. added | 502,931 | $4M | 0.8% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC trimmed | 467,100 | $4M | 0.8% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 458,933 | $4M | 0.8% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 349,253 | $3M | 0.6% | 2026-Q1 |
| E Fund Management Co., Ltd. trimmed | 347,718 | $3M | 0.6% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 315,993 | $3M | 0.5% | 2026-Q1 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 300,807 | $3M | 0.5% | 2026-Q1 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO trimmed | 283,749 | $2M | 0.5% | 2026-Q1 |
| Legal & General Group Plc trimmed | 244,939 | $2M | 0.4% | 2026-Q1 |
| MORGAN STANLEY trimmed | 232,390 | $2M | 0.4% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 230,030 | $2M | 0.4% | 2026-Q1 |
| Mitsubishi UFJ Trust & Banking Corp trimmed | 204,223 | $2M | 0.3% | 2026-Q1 |
| Jump Financial, LLC trimmed | 198,088 | $2M | 0.3% | 2026-Q1 |
| XY Capital Ltd trimmed | 177,611 | $2M | 0.3% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 174,635 | $2M | 0.3% | 2026-Q1 |
| Allianz Asset Management GmbH trimmed | 135,387 | $1M | 0.2% | 2026-Q1 |
| DGS Capital Management, LLC added | 127,750 | $1M | 0.2% | 2026-Q1 |
| VIRTUS ADVISERS, LLC trimmed | 124,899 | $1M | 0.2% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 112,390 | $971K | 0.2% | 2026-Q1 |
| AIA Group Ltd added | 103,579 | $906K | 0.2% | 2026-Q1 |
| Caprock Group, LLC added | 95,761 | $838K | 0.2% | 2026-Q1 |
| Vident Advisory, LLC added | 95,252 | $833K | 0.2% | 2026-Q1 |
| EDMOND DE ROTHSCHILD HOLDING S.A. | 94,673 | $828K | 0.2% | 2026-Q1 |
| Police & Firemen's Retirement System of New Jersey added | 87,882 | $769K | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 85,319 | $747K | 0.1% | 2026-Q1 |
| BlackRock, Inc. trimmed | 82,413 | $721K | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 69,363 | $607K | 0.1% | 2026-Q1 |
| Glenorchy Capital Ltd added | 68,502 | $599K | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 65,175 | $570K | 0.1% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 61,329 | $537K | 0.1% | 2026-Q1 |
| HRT FINANCIAL LP added | 57,162 | $500K | 0.1% | 2026-Q1 |
| OMERS ADMINISTRATION Corp | 52,930 | $463K | 0.1% | 2026-Q1 |
| Verition Fund Management LLC added | 52,802 | $462K | 0.1% | 2026-Q1 |
| ARGA Investment Management, LP | 52,156 | $456K | 0.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 50,195 | $439K | 0.1% | 2026-Q1 |
| Headlands Technologies LLC added | 47,743 | $418K | 0.1% | 2026-Q1 |
| US BANCORP \DE\ added | 46,695 | $409K | 0.1% | 2026-Q1 |
| LVW Advisors, LLC new | 46,123 | $404K | 0.1% | 2026-Q1 |
| Kathmere Capital Management, LLC trimmed | 45,353 | $397K | 0.1% | 2026-Q1 |
| Handelsbanken Fonder AB added | 42,140 | $369K | 0.1% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 35,307 | $309K | 0.1% | 2026-Q1 |
| Mariner, LLC added | 35,137 | $307K | 0.1% | 2026-Q1 |
| CIBC WORLD MARKET INC. | 34,013 | $298K | 0.1% | 2026-Q1 |
| Nuveen, LLC added | 1,708,822 | $21M | 4.1% | 2025-Q3 stale |
| MACQUARIE GROUP LTD trimmed | 1,572,680 | $20M | 3.8% | 2025-Q3 stale |
| FEDERATED HERMES, INC. trimmed | 1,146,201 | $14M | 2.7% | 2025-Q3 stale |
| NORGES BANK added | 1,112,252 | $11M | 2.2% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP trimmed | 723,588 | $7M | 1.4% | 2025-Q4 stale |
| Grantham, Mayo, Van Otterloo & Co. LLC trimmed | 637,145 | $7M | 1.3% | 2025-Q4 stale |
| Polunin Capital Partners Ltd | 561,050 | $5M | 1.1% | 2025-Q2 stale |
| CANADA PENSION PLAN INVESTMENT BOARD | 554,600 | $5M | 1.0% | 2025-Q2 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 363,667 | $5M | 0.9% | 2025-Q3 stale |
| Alpine Investment Management Ltd added | 386,000 | $4M | 0.8% | 2025-Q4 stale |
| Man Group plc trimmed | 362,889 | $3M | 0.7% | 2025-Q1 stale |
| Robeco Institutional Asset Management B.V. | 286,228 | $3M | 0.5% | 2025-Q1 stale |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND trimmed | 214,400 | $3M | 0.5% | 2025-Q3 stale |
| HSBC HOLDINGS PLC added | 180,011 | $2M | 0.3% | 2025-Q2 stale |
| Pictet Asset Management Holding SA added | 113,700 | $1M | 0.3% | 2025-Q3 stale |
| PINEBRIDGE INVESTMENTS, L.P. added | 129,711 | $1M | 0.2% | 2025-Q1 stale |
| CAXTON ASSOCIATES LLP new | 120,255 | $1M | 0.2% | 2025-Q1 stale |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 114,228 | $1M | 0.2% | 2025-Q2 stale |
| Redhawk Wealth Advisors, Inc. added | 105,795 | $1M | 0.2% | 2025-Q4 stale |
| Walleye Capital LLC trimmed | 108,617 | $1M | 0.2% | 2025-Q2 stale |
| MARSHALL WACE, LLP added | 97,433 | $996K | 0.2% | 2025-Q4 stale |
| BAROMETER CAPITAL MANAGEMENT INC. added | 78,900 | $978K | 0.2% | 2025-Q3 stale |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 94,895 | $963K | 0.2% | 2025-Q4 stale |
| HHLR ADVISORS, LTD. new | 100,000 | $947K | 0.2% | 2025-Q1 stale |
| GF FUND MANAGEMENT CO. LTD. trimmed | 74,710 | $926K | 0.2% | 2025-Q3 stale |
| Harvest Fund Management Co., Ltd | 74,496 | $755K | 0.1% | 2025-Q4 stale |
| Cubist Systematic Strategies, LLC trimmed | 73,025 | $696K | 0.1% | 2025-Q2 stale |
| DV EQUITIES, LLC new | 67,843 | $693K | 0.1% | 2025-Q4 stale |
| Point72 Asset Management, L.P. trimmed | 71,269 | $679K | 0.1% | 2025-Q2 stale |
| Quantbot Technologies LP added | 69,288 | $656K | 0.1% | 2025-Q1 stale |
| Polymer Capital Management (HK) LTD new | 64,827 | $618K | 0.1% | 2025-Q2 stale |
| Numerai GP LLC added | 55,112 | $525K | 0.1% | 2025-Q2 stale |
| GROUP ONE TRADING LLC added | 51,012 | $486K | 0.1% | 2025-Q2 stale |
| MGO ONE SEVEN LLC added | 36,518 | $453K | 0.1% | 2025-Q3 stale |
| ABC ARBITRAGE SA new | 35,889 | $445K | 0.1% | 2025-Q3 stale |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO trimmed | 26,700 | $331K | 0.1% | 2025-Q3 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.