Who owns RXST (RXST)
Which tracked institutional funds hold RXST, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See RXST 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 RXST is one-sided between 2025-Q4 and 2026-Q1: 17 added or opened and 57 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
RXST’s largest tracked holder by dollar value, RA CAPITAL MANAGEMENT, L.P., sizes it at 0.5% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in RXST 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 163 tracked filers holding RXST, 95 increased or opened the position and 87 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 RXST 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 6
- VANGUARD CAPITAL MANAGEMENT LLC$10M
- VANGUARD PORTFOLIO MANAGEMENT LLC$2M
- VANGUARD FIDUCIARY TRUST CO$2M
- Qube Research & Technologies Ltd$771K
- XTX Topco Ltd$650K
- HRT FINANCIAL LP$509K
Full exits 8
- VANGUARD GROUP INC$23M
- Defilade Capital Management, L.P.$10M
- TWO SIGMA ADVISERS, LP$8M
- One Fin Capital Management LP$3M
- FIRST CITIZENS BANK & TRUST CO$800K
- VOYA INVESTMENT MANAGEMENT LLC$743K
Largest adds
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$6M
- JACOBS LEVY EQUITY MANAGEMENT, INC$5M
- AQR CAPITAL MANAGEMENT LLC$3M
- FEDERATED HERMES, INC.$2M
- ACADIAN ASSET MANAGEMENT LLC$2M
- Walleye Capital LLC$1M
Largest trims
- Artisan Partners Limited Partnership$10M
- MILLENNIUM MANAGEMENT LLC$9M
- BlackRock, Inc.$9M
- NOMURA HOLDINGS INC$9M
- Point72 Asset Management, L.P.$8M
- BNP PARIBAS FINANCIAL MARKETS$8M
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 |
|---|---|---|---|---|
| BlackRock, Inc. added | 3,187,092 | $20M | 4.5% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 2,059,459 | $13M | 2.9% | 2026-Q1 |
| Artisan Partners Limited Partnership trimmed | 2,058,684 | $13M | 2.9% | 2026-Q1 |
| NOMURA HOLDINGS INC | 2,000,060 | $12M | 2.8% | 2026-Q1 |
| No Street GP LP added | 2,000,000 | $12M | 2.8% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 1,959,732 | $12M | 2.8% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,692,935 | $10M | 2.4% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 1,300,260 | $8M | 1.8% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 1,210,039 | $7M | 1.7% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 1,131,400 | $7M | 1.6% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,118,719 | $7M | 1.6% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 1,080,712 | $7M | 1.5% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 1,066,321 | $7M | 1.5% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 1,019,127 | $6M | 1.4% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 962,312 | $6M | 1.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 919,893 | $6M | 1.3% | 2026-Q1 |
| STATE STREET CORP trimmed | 801,323 | $5M | 1.1% | 2026-Q1 |
| Point72 Asset Management, L.P. trimmed | 733,307 | $5M | 1.0% | 2026-Q1 |
| BAILLIE GIFFORD & CO trimmed | 690,279 | $4M | 1.0% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 617,972 | $4M | 0.9% | 2026-Q1 |
| MORGAN STANLEY trimmed | 609,904 | $4M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 495,704 | $3M | 0.7% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 488,641 | $3M | 0.7% | 2026-Q1 |
| Grandeur Peak Global Advisors, LLC added | 465,592 | $3M | 0.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 335,802 | $2M | 0.5% | 2026-Q1 |
| NORTHERN TRUST CORP added | 317,761 | $2M | 0.4% | 2026-Q1 |
| Holocene Advisors, LP added | 315,250 | $2M | 0.4% | 2026-Q1 |
| Walleye Capital LLC added | 314,616 | $2M | 0.4% | 2026-Q1 |
| TOCQUEVILLE ASSET MANAGEMENT L.P. added | 310,000 | $2M | 0.4% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 304,788 | $2M | 0.4% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 301,622 | $2M | 0.4% | 2026-Q1 |
| Vitruvian Partners LLP | 278,865 | $2M | 0.4% | 2026-Q1 |
| Jump Financial, LLC added | 257,193 | $2M | 0.4% | 2026-Q1 |
| Parkman Healthcare Partners LLC trimmed | 249,989 | $2M | 0.4% | 2026-Q1 |
| BROWN CAPITAL MANAGEMENT LLC trimmed | 248,896 | $2M | 0.4% | 2026-Q1 |
| BRIDGER MANAGEMENT, LLC added | 248,858 | $2M | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 247,929 | $2M | 0.3% | 2026-Q1 |
| UBS Group AG trimmed | 239,456 | $1M | 0.3% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 223,904 | $1M | 0.3% | 2026-Q1 |
| Y-Intercept (Hong Kong) Ltd trimmed | 196,935 | $1M | 0.3% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 193,840 | $1M | 0.3% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC trimmed | 191,700 | $1M | 0.3% | 2026-Q1 |
| ALGERT GLOBAL LLC added | 190,884 | $1M | 0.3% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC added | 175,046 | $1M | 0.2% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 167,343 | $1M | 0.2% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 162,800 | $1M | 0.2% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND | 158,224 | $975K | 0.2% | 2026-Q1 |
| Carnegie Lake Advisors LLC trimmed | 154,745 | $953K | 0.2% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 150,960 | $930K | 0.2% | 2026-Q1 |
| Trexquant Investment LP added | 136,987 | $844K | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 125,130 | $771K | 0.2% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 106,638 | $657K | 0.2% | 2026-Q1 |
| XTX Topco Ltd added | 105,520 | $650K | 0.1% | 2026-Q1 |
| Engineers Gate Manager LP added | 101,034 | $622K | 0.1% | 2026-Q1 |
| Bank of New York Mellon Corp added | 100,306 | $618K | 0.1% | 2026-Q1 |
| RA CAPITAL MANAGEMENT, L.P. trimmed | 3,702,967 | $48M | 11.0% | 2025-Q2 stale |
| VANGUARD GROUP INC added | 2,229,539 | $23M | 5.3% | 2025-Q4 stale |
| Credit Agricole S A added | 786,063 | $20M | 4.5% | 2025-Q1 stale |
| DF DENT & CO INC trimmed | 421,061 | $11M | 2.4% | 2025-Q1 stale |
| Defilade Capital Management, L.P. new | 913,090 | $10M | 2.2% | 2025-Q4 stale |
| WELLINGTON MANAGEMENT GROUP LLP new | 727,952 | $9M | 2.2% | 2025-Q2 stale |
| Granite Investment Partners, LLC added | 312,574 | $8M | 1.8% | 2025-Q1 stale |
| TWO SIGMA ADVISERS, LP added | 732,100 | $8M | 1.7% | 2025-Q4 stale |
| VICTORY CAPITAL MANAGEMENT INC added | 281,658 | $7M | 1.6% | 2025-Q1 stale |
| WASATCH ADVISORS LP added | 448,539 | $6M | 1.3% | 2025-Q2 stale |
| 4D Advisors, LLC added | 554,930 | $5M | 1.1% | 2025-Q3 stale |
| NEXT CENTURY GROWTH INVESTORS LLC trimmed | 163,359 | $4M | 0.9% | 2025-Q1 stale |
| Thrivent Financial for Lutherans trimmed | 312,220 | $4M | 0.9% | 2025-Q2 stale |
| Kent Lake PR LLC new | 300,000 | $4M | 0.9% | 2025-Q2 stale |
| ARMISTICE CAPITAL, LLC new | 142,036 | $4M | 0.8% | 2025-Q1 stale |
| Granahan Investment Management, LLC added | 129,721 | $3M | 0.8% | 2025-Q1 stale |
| Atika Capital Management LLC | 354,907 | $3M | 0.7% | 2025-Q3 stale |
| One Fin Capital Management LP | 254,583 | $3M | 0.6% | 2025-Q4 stale |
| Sara-Bay Financial trimmed | 95,829 | $3M | 0.6% | 2025-Q1 stale |
| Telemark Asset Management, LLC trimmed | 100,000 | $3M | 0.6% | 2025-Q1 stale |
| Circle Wealth Management, LLC | 165,719 | $2M | 0.5% | 2025-Q2 stale |
| SVB WEALTH LLC | 76,816 | $2M | 0.4% | 2025-Q1 stale |
| Divisadero Street Capital Management, LP trimmed | 214,860 | $2M | 0.4% | 2025-Q3 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 180,776 | $2M | 0.4% | 2025-Q3 stale |
| Meridiem Capital Partners LP new | 174,014 | $2M | 0.4% | 2025-Q3 stale |
| DARK FOREST CAPITAL MANAGEMENT LP added | 61,540 | $2M | 0.4% | 2025-Q1 stale |
| Militia Capital Partners, LP added | 110,900 | $1M | 0.3% | 2025-Q2 stale |
| Cubist Systematic Strategies, LLC added | 146,406 | $1M | 0.3% | 2025-Q3 stale |
| TWINBEECH CAPITAL LP added | 94,590 | $1M | 0.3% | 2025-Q2 stale |
| Paragon Advisors, LLC added | 48,678 | $1M | 0.3% | 2025-Q1 stale |
| BRADLEY FOSTER & SARGENT INC/CT added | 86,055 | $1M | 0.3% | 2025-Q2 stale |
| GILDER GAGNON HOWE & CO LLC trimmed | 84,047 | $1M | 0.3% | 2025-Q2 stale |
| Ensign Peak Advisors, Inc trimmed | 118,928 | $1M | 0.2% | 2025-Q3 stale |
| PRINCIPAL FINANCIAL GROUP INC added | 40,486 | $1M | 0.2% | 2025-Q1 stale |
| Dynamic Technology Lab Private Ltd added | 76,728 | $997K | 0.2% | 2025-Q2 stale |
| CAXTON ASSOCIATES LLP new | 70,279 | $914K | 0.2% | 2025-Q2 stale |
| Swiss National Bank | 66,300 | $862K | 0.2% | 2025-Q2 stale |
| FIRST CITIZENS BANK & TRUST CO | 76,816 | $800K | 0.2% | 2025-Q4 stale |
| Nebula Research & Development LLC | 60,048 | $781K | 0.2% | 2025-Q2 stale |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 71,270 | $743K | 0.2% | 2025-Q4 stale |
| Polar Asset Management Partners Inc. trimmed | 28,014 | $707K | 0.2% | 2025-Q1 stale |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC new | 27,931 | $705K | 0.2% | 2025-Q1 stale |
| Future Fund LLC added | 74,406 | $669K | 0.2% | 2025-Q3 stale |
| One Capital Management, LLC added | 74,406 | $669K | 0.2% | 2025-Q3 stale |
| FORMULA GROWTH LTD added | 60,000 | $625K | 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.