Who owns STUB (STUB)
Which tracked institutional funds hold STUB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See STUB 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
37 tracked funds added or opened STUB while 67 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
STUB’s largest tracked holder by dollar value, MADRONE ADVISORS, LLC, sizes it at 46.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 45.9pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in STUB 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 STUB, 103 increased or opened the position and 58 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
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 STUB 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 30
- KLINGENSTEIN FIELDS & CO LP$39M
- ENTRUST GLOBAL PARTNERS L L C$30M
- DME Capital Management, LP$26M
- Abu Dhabi Investment Council Co P.J.S.C$21M
- SCS Capital Management LLC$5M
- Colter Lewis Investment Partners LLC$4M
Full exits 24
- Capital Research Global Investors$107M
- ALLIANCEBERNSTEIN L.P.$56M
- NORGES BANK$24M
- Longaeva Partners L.P.$20M
- VANGUARD GROUP INC$11M
- Rubric Capital Management LP$11M
Largest adds
- Capital World Investors$41M
- CITADEL ADVISORS LLC$16M
- Squarepoint Ops LLC$5M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$2M
- BANK OF AMERICA CORP /DE/$2M
- BANK OF MONTREAL /CAN/$2M
Largest trims
- MADRONE ADVISORS, LLC$552M
- WestCap Management, LLC$248M
- PointState Capital LP$210M
- Declaration Partners LP$178M
- Deer Management Co. LLC$161M
- JPMORGAN CHASE & CO$61M
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 |
|---|---|---|---|---|
| MADRONE ADVISORS, LLC | 75,780,055 | $473M | 23.3% | 2026-Q1 |
| WestCap Management, LLC trimmed | 28,991,583 | $181M | 8.9% | 2026-Q1 |
| Deer Management Co. LLC | 22,038,489 | $138M | 6.8% | 2026-Q1 |
| PointState Capital LP trimmed | 20,126,701 | $126M | 6.2% | 2026-Q1 |
| Capital World Investors added | 9,002,141 | $56M | 2.8% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 8,162,623 | $50M | 2.4% | 2026-Q1 |
| StepStone Group LP | 7,562,225 | $47M | 2.3% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC | 7,368,767 | $46M | 2.3% | 2026-Q1 |
| Index Venture Associates III Ltd | 6,296,550 | $39M | 1.9% | 2026-Q1 |
| KLINGENSTEIN FIELDS & CO LP new | 6,170,040 | $39M | 1.9% | 2026-Q1 |
| ENTRUST GLOBAL PARTNERS L L C new | 4,850,637 | $30M | 1.5% | 2026-Q1 |
| DME Capital Management, LP new | 4,233,200 | $26M | 1.3% | 2026-Q1 |
| Capital International Investors | 4,082,393 | $25M | 1.3% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 3,754,847 | $23M | 1.2% | 2026-Q1 |
| Declaration Partners LP trimmed | 3,487,028 | $22M | 1.1% | 2026-Q1 |
| Insight Holdings Group, LLC | 3,437,380 | $21M | 1.1% | 2026-Q1 |
| Abu Dhabi Investment Council Co P.J.S.C new | 3,437,372 | $21M | 1.1% | 2026-Q1 |
| Rokos Capital Management LLP added | 2,143,423 | $13M | 0.7% | 2026-Q1 |
| Brown University | 2,062,425 | $13M | 0.6% | 2026-Q1 |
| BAMCO INC /NY/ trimmed | 1,931,317 | $12M | 0.6% | 2026-Q1 |
| BlackRock, Inc. trimmed | 1,736,563 | $11M | 0.5% | 2026-Q1 |
| Slate Path Capital LP | 1,459,200 | $9M | 0.4% | 2026-Q1 |
| Duquesne Family Office LLC trimmed | 1,367,177 | $9M | 0.4% | 2026-Q1 |
| DAVENPORT & Co LLC added | 1,351,810 | $8M | 0.4% | 2026-Q1 |
| MARSHALL WACE, LLP added | 1,269,754 | $8M | 0.4% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 1,252,090 | $8M | 0.4% | 2026-Q1 |
| UBS Group AG added | 1,044,374 | $7M | 0.3% | 2026-Q1 |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT | 960,507 | $6M | 0.3% | 2026-Q1 |
| MAVERICK CAPITAL LTD | 931,473 | $6M | 0.3% | 2026-Q1 |
| WS MANAGEMENT LLLP | 800,000 | $5M | 0.2% | 2026-Q1 |
| Squarepoint Ops LLC added | 762,519 | $5M | 0.2% | 2026-Q1 |
| SCS Capital Management LLC new | 757,390 | $5M | 0.2% | 2026-Q1 |
| Colter Lewis Investment Partners LLC new | 682,657 | $4M | 0.2% | 2026-Q1 |
| Pine Ridge Advisers LLC new | 659,840 | $4M | 0.2% | 2026-Q1 |
| Alberta Investment Management Corp trimmed | 631,000 | $4M | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 572,790 | $4M | 0.2% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN added | 552,960 | $3M | 0.2% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 541,656 | $3M | 0.2% | 2026-Q1 |
| RPM Capital Partners, LLC | 535,850 | $3M | 0.2% | 2026-Q1 |
| NWI MANAGEMENT LP | 500,000 | $3M | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 412,960 | $3M | 0.1% | 2026-Q1 |
| Divisadero Street Capital Management, LP new | 384,638 | $2M | 0.1% | 2026-Q1 |
| Weiss Asset Management LP new | 384,062 | $2M | 0.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 374,945 | $2M | 0.1% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 357,556 | $2M | 0.1% | 2026-Q1 |
| Stephens Group, LLC new | 348,698 | $2M | 0.1% | 2026-Q1 |
| Comprehensive Financial Management LLC new | 343,735 | $2M | 0.1% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ added | 340,181 | $2M | 0.1% | 2026-Q1 |
| Galaxy Digital Inc. new | 331,708 | $2M | 0.1% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 290,633 | $2M | 0.1% | 2026-Q1 |
| CWM, LLC added | 286,217 | $2M | 0.1% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL | 268,305 | $2M | 0.1% | 2026-Q1 |
| GROUP ONE TRADING LLC new | 263,116 | $2M | 0.1% | 2026-Q1 |
| MORGAN STANLEY trimmed | 232,808 | $1M | 0.1% | 2026-Q1 |
| OPPENHEIMER & CO INC new | 221,889 | $1M | 0.1% | 2026-Q1 |
| PRELUDE CAPITAL MANAGEMENT, LLC new | 214,691 | $1M | 0.1% | 2026-Q1 |
| BTG Pactual Asset Management US LLC new | 71,445 | $1M | 0.1% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 194,040 | $1M | 0.1% | 2026-Q1 |
| BlueCrest Capital Management Ltd new | 175,000 | $1M | 0.1% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 164,951 | $1M | 0.1% | 2026-Q1 |
| Douglass Winthrop Advisors, LLC new | 158,654 | $990K | 0.0% | 2026-Q1 |
| NBT BANK N A /NY new | 158,654 | $990K | 0.0% | 2026-Q1 |
| Ahara Advisors LLC new | 149,777 | $935K | 0.0% | 2026-Q1 |
| Capital Research Global Investors new | 7,900,000 | $107M | 5.3% | 2025-Q4 stale |
| ALLIANCEBERNSTEIN L.P. trimmed | 4,120,308 | $56M | 2.7% | 2025-Q4 stale |
| Holocene Advisors, LP new | 2,517,239 | $42M | 2.1% | 2025-Q3 stale |
| VIKING GLOBAL INVESTORS LP new | 2,040,816 | $34M | 1.7% | 2025-Q3 stale |
| AMERICAN CENTURY COMPANIES INC new | 1,885,826 | $32M | 1.6% | 2025-Q3 stale |
| PRINCIPAL FINANCIAL GROUP INC new | 1,564,000 | $26M | 1.3% | 2025-Q3 stale |
| NORGES BANK new | 1,750,000 | $24M | 1.2% | 2025-Q4 stale |
| Longaeva Partners L.P. trimmed | 1,450,047 | $20M | 1.0% | 2025-Q4 stale |
| JENNISON ASSOCIATES LLC new | 752,788 | $13M | 0.6% | 2025-Q3 stale |
| VANGUARD GROUP INC added | 797,596 | $11M | 0.5% | 2025-Q4 stale |
| Rubric Capital Management LP new | 784,854 | $11M | 0.5% | 2025-Q4 stale |
| Jain Global LLC new | 767,921 | $10M | 0.5% | 2025-Q4 stale |
| Balyasny Asset Management L.P. trimmed | 761,157 | $10M | 0.5% | 2025-Q4 stale |
| Galaxy Group Investments LLC new | 670,547 | $9M | 0.4% | 2025-Q4 stale |
| Toronado Partners, LLC added | 555,710 | $8M | 0.4% | 2025-Q4 stale |
| Dragoneer Investment Group, LLC new | 425,531 | $7M | 0.4% | 2025-Q3 stale |
| Barrier Capital Management, LLC new | 445,300 | $6M | 0.3% | 2025-Q4 stale |
| MOORE CAPITAL MANAGEMENT, LP new | 418,800 | $6M | 0.3% | 2025-Q4 stale |
| BURKEHILL GLOBAL MANAGEMENT, LP | 365,000 | $5M | 0.2% | 2025-Q4 stale |
| Hudson Bay Capital Management LP | 251,000 | $4M | 0.2% | 2025-Q4 stale |
| Freestone Grove Partners LP new | 292,770 | $4M | 0.2% | 2025-Q4 stale |
| Unisphere Establishment trimmed | 250,000 | $3M | 0.2% | 2025-Q4 stale |
| Monashee Investment Management LLC new | 200,000 | $3M | 0.2% | 2025-Q3 stale |
| Woodline Partners LP new | 151,011 | $3M | 0.1% | 2025-Q3 stale |
| SEVEN GRAND MANAGERS, LLC new | 150,000 | $3M | 0.1% | 2025-Q3 stale |
| READYSTATE ASSET MANAGEMENT LP new | 142,673 | $2M | 0.1% | 2025-Q3 stale |
| TEACHER RETIREMENT SYSTEM OF TEXAS | 150,000 | $2M | 0.1% | 2025-Q4 stale |
| MIRAE ASSET SECURITIES (USA) INC. new | 148,994 | $2M | 0.1% | 2025-Q4 stale |
| Nicholas Investment Partners, LP new | 118,129 | $2M | 0.1% | 2025-Q3 stale |
| MAPLELANE CAPITAL, LLC new | 100,000 | $2M | 0.1% | 2025-Q3 stale |
| Empowered Funds, LLC new | 122,441 | $2M | 0.1% | 2025-Q4 stale |
| Jericho Capital Asset Management L.P. new | 75,000 | $1M | 0.1% | 2025-Q3 stale |
| IMC-Chicago, LLC new | 91,748 | $1M | 0.1% | 2025-Q4 stale |
| Stone Ridge Holdings Group LP | 80,000 | $1M | 0.1% | 2025-Q4 stale |
| Universal- Beteiligungs- und Servicegesellschaft mbH new | 75,000 | $1M | 0.1% | 2025-Q4 stale |
| J. Goldman & Co LP new | 60,309 | $1M | 0.1% | 2025-Q3 stale |
| Baader Bank Aktiengesellschaft new | 75,000 | $1M | 0.0% | 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.