Who owns RUSHB (RUSHB)
Which tracked institutional funds hold RUSHB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See RUSHB 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 RUSHB is one-sided between 2025-Q4 and 2026-Q1: 141 added or opened and 47 trimmed or exited — on balance accumulating.
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
RUSHB’s largest tracked holder by dollar value, FMR LLC, 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 conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in RUSHB 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 374 tracked filers holding RUSHB, 206 increased or opened the position and 160 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 RUSHB 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 28
- VANGUARD PORTFOLIO MANAGEMENT LLC$254M
- VANGUARD CAPITAL MANAGEMENT LLC$203M
- VANGUARD FIDUCIARY TRUST CO$31M
- BALYASNY ASSET MANAGEMENT L.P.$15M
- SEB Asset Management AB$11M
- NEUBERGER BERMAN GROUP LLC$7M
Full exits 19
- VANGUARD GROUP INC$368M
- Skandinaviska Enskilda Banken AB (publ)$7M
- TWO SIGMA ADVISERS, LP$7M
- TUDOR INVESTMENT CORP ET AL$7M
- Neo Ivy Capital Management$6M
- Woodline Partners LP$2M
Largest adds
- FMR LLC$190M
- T. Rowe Price Investment Management, Inc.$72M
- AMERICAN CENTURY COMPANIES INC$65M
- BlackRock, Inc.$60M
- JENNISON ASSOCIATES LLC$51M
- DIMENSIONAL FUND ADVISORS LP$39M
Largest trims
- GOLDMAN SACHS GROUP INC$32M
- WELLINGTON MANAGEMENT GROUP LLP$29M
- Forager Capital Management, LLC$10M
- D. E. Shaw & Co., Inc.$7M
- Global Alpha Capital Management Ltd.$6M
- COOKE & BIELER LP$6M
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 |
|---|---|---|---|---|
| FMR LLC added | 8,980,669 | $594M | 18.8% | 2026-Q1 |
| BlackRock, Inc. trimmed | 8,514,791 | $563M | 17.8% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 2,425,283 | $160M | 5.1% | 2026-Q1 |
| STATE STREET CORP added | 2,334,568 | $154M | 4.9% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 2,206,473 | $146M | 4.6% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 1,615,720 | $107M | 3.4% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,292,777 | $83M | 2.6% | 2026-Q1 |
| JENNISON ASSOCIATES LLC added | 1,121,450 | $74M | 2.3% | 2026-Q1 |
| BECK MACK & OLIVER LLC trimmed | 957,622 | $63M | 2.0% | 2026-Q1 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC added | 873,911 | $58M | 1.8% | 2026-Q1 |
| NORTHERN TRUST CORP added | 773,304 | $51M | 1.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 765,330 | $51M | 1.6% | 2026-Q1 |
| Global Alpha Capital Management Ltd. trimmed | 734,197 | $49M | 1.5% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 574,524 | $37M | 1.2% | 2026-Q1 |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. trimmed | 554,746 | $37M | 1.2% | 2026-Q1 |
| Bank of New York Mellon Corp added | 546,109 | $36M | 1.1% | 2026-Q1 |
| MORGAN STANLEY added | 534,288 | $35M | 1.1% | 2026-Q1 |
| GABELLI FUNDS LLC trimmed | 530,500 | $34M | 1.1% | 2026-Q1 |
| COOKE & BIELER LP trimmed | 509,346 | $34M | 1.1% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 387,462 | $26M | 0.8% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 377,143 | $25M | 0.8% | 2026-Q1 |
| EULAV Asset Management added | 372,719 | $25M | 0.8% | 2026-Q1 |
| Pacer Advisors, Inc. trimmed | 368,107 | $24M | 0.8% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 351,697 | $23M | 0.7% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 349,547 | $22M | 0.7% | 2026-Q1 |
| NEW SOUTH CAPITAL MANAGEMENT INC trimmed | 337,828 | $22M | 0.7% | 2026-Q1 |
| MUHLENKAMP & CO INC trimmed | 331,905 | $22M | 0.7% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 330,749 | $22M | 0.7% | 2026-Q1 |
| GW&K Investment Management, LLC trimmed | 320,696 | $21M | 0.7% | 2026-Q1 |
| MOTCO | 316,803 | $21M | 0.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 318,934 | $21M | 0.6% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 277,356 | $18M | 0.6% | 2026-Q1 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC added | 238,823 | $16M | 0.5% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 229,910 | $15M | 0.5% | 2026-Q1 |
| PRIVATE MANAGEMENT GROUP INC trimmed | 226,775 | $15M | 0.5% | 2026-Q1 |
| Public Sector Pension Investment Board added | 216,995 | $14M | 0.5% | 2026-Q1 |
| Allianz Asset Management GmbH added | 198,551 | $13M | 0.4% | 2026-Q1 |
| 12th Street Asset Management Company, LLC added | 195,326 | $13M | 0.4% | 2026-Q1 |
| Harspring Capital Management, LLC trimmed | 180,000 | $12M | 0.4% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 172,816 | $11M | 0.4% | 2026-Q1 |
| SEB Asset Management AB new | 170,716 | $11M | 0.4% | 2026-Q1 |
| LOOMIS SAYLES & CO L P added | 163,976 | $11M | 0.3% | 2026-Q1 |
| Clearbridge Investments, LLC trimmed | 155,538 | $10M | 0.3% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 151,541 | $10M | 0.3% | 2026-Q1 |
| Granite Investment Partners, LLC added | 143,619 | $9M | 0.3% | 2026-Q1 |
| Legal & General Group Plc trimmed | 143,505 | $9M | 0.3% | 2026-Q1 |
| LORD, ABBETT & CO. LLC added | 136,095 | $9M | 0.3% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 133,394 | $9M | 0.3% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 136,104 | $9M | 0.3% | 2026-Q1 |
| First Pacific Advisors, LP trimmed | 129,094 | $9M | 0.3% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 123,929 | $8M | 0.3% | 2026-Q1 |
| DENALI ADVISORS LLC trimmed | 116,911 | $8M | 0.2% | 2026-Q1 |
| NATIXIS ADVISORS, LLC trimmed | 113,699 | $8M | 0.2% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 111,684 | $7M | 0.2% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 108,585 | $7M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 106,874 | $7M | 0.2% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 106,064 | $7M | 0.2% | 2026-Q1 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 100,830 | $7M | 0.2% | 2026-Q1 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 100,031 | $7M | 0.2% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 96,516 | $6M | 0.2% | 2026-Q1 |
| Trexquant Investment LP added | 92,874 | $6M | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 92,419 | $6M | 0.2% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC added | 91,875 | $6M | 0.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 91,349 | $6M | 0.2% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 89,245 | $6M | 0.2% | 2026-Q1 |
| MARTINGALE ASSET MANAGEMENT L P added | 88,935 | $6M | 0.2% | 2026-Q1 |
| PEREGRINE CAPITAL MANAGEMENT LLC trimmed | 82,401 | $5M | 0.2% | 2026-Q1 |
| NORGES BANK trimmed | 99,004 | $5M | 0.2% | 2026-Q1 |
| Creative Planning added | 77,464 | $5M | 0.2% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 72,875 | $5M | 0.2% | 2026-Q1 |
| VISTA INVESTMENT MANAGEMENT added | 62,272 | $4M | 0.1% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 60,593 | $4M | 0.1% | 2026-Q1 |
| JOHNSON INVESTMENT COUNSEL INC added | 59,505 | $4M | 0.1% | 2026-Q1 |
| Kingsview Wealth Management, LLC new | 59,412 | $4M | 0.1% | 2026-Q1 |
| GLOBEFLEX CAPITAL L P added | 59,342 | $4M | 0.1% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 57,104 | $4M | 0.1% | 2026-Q1 |
| BESSEMER GROUP INC added | 56,839 | $4M | 0.1% | 2026-Q1 |
| ALGERT GLOBAL LLC trimmed | 56,576 | $4M | 0.1% | 2026-Q1 |
| Leith Wheeler Investment Counsel Ltd. new | 55,291 | $4M | 0.1% | 2026-Q1 |
| GREAT LAKES ADVISORS, LLC trimmed | 54,749 | $4M | 0.1% | 2026-Q1 |
| BRIDGES INVESTMENT MANAGEMENT INC added | 53,494 | $4M | 0.1% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 51,409 | $3M | 0.1% | 2026-Q1 |
| Prescott Group Capital Management, L.L.C. | 49,304 | $3M | 0.1% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 48,000 | $3M | 0.1% | 2026-Q1 |
| Forager Capital Management, LLC trimmed | 47,822 | $3M | 0.1% | 2026-Q1 |
| ExodusPoint Capital Management, LP trimmed | 46,403 | $3M | 0.1% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL trimmed | 42,192 | $3M | 0.1% | 2026-Q1 |
| INTECH INVESTMENT MANAGEMENT LLC added | 42,059 | $3M | 0.1% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 42,469 | $3M | 0.1% | 2026-Q1 |
| Thrivent Financial for Lutherans trimmed | 40,478 | $3M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 813,344 | $46M | 1.4% | 2025-Q4 stale |
| Skandinaviska Enskilda Banken AB (publ) added | 137,590 | $7M | 0.2% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP added | 134,451 | $7M | 0.2% | 2025-Q4 stale |
| RIVULET CAPITAL, LLC trimmed | 133,160 | $7M | 0.2% | 2025-Q3 stale |
| TUDOR INVESTMENT CORP ET AL trimmed | 122,104 | $7M | 0.2% | 2025-Q4 stale |
| LSV ASSET MANAGEMENT | 123,600 | $6M | 0.2% | 2025-Q2 stale |
| Neo Ivy Capital Management added | 114,926 | $6M | 0.2% | 2025-Q4 stale |
| CASTLEARK MANAGEMENT LLC added | 98,840 | $5M | 0.2% | 2025-Q1 stale |
| Cubist Systematic Strategies, LLC added | 78,528 | $4M | 0.1% | 2025-Q3 stale |
| Nilsine Partners, LLC added | 56,313 | $3M | 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.