Who owns NRIX (NRIX)
Which tracked institutional funds hold NRIX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NRIX 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
40 tracked funds added or opened NRIX while 75 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
NRIX’s largest tracked holder by dollar value, BlackRock, 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 NRIX more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in NRIX 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 196 tracked filers holding NRIX, 110 increased or opened the position and 73 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 NRIX 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 CAPITAL MANAGEMENT LLC$69M
- VANGUARD PORTFOLIO MANAGEMENT LLC$17M
- Capital World Investors$14M
- VANGUARD FIDUCIARY TRUST CO$10M
- Fisher Asset Management, LLC$6M
- D. E. Shaw & Co., Inc.$5M
Full exits 15
- VANGUARD GROUP INC$99M
- Logos Global Management LP$9M
- Ensign Peak Advisors, Inc$4M
- T. Rowe Price Investment Management, Inc.$3M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$3M
- SPHERA FUNDS MANAGEMENT LTD.$2M
Largest adds
- STATE STREET CORP$12M
- Vestal Point Capital, LP$12M
- UBS Group AG$7M
- Qube Research & Technologies Ltd$7M
- Longaeva Partners L.P.$5M
- Integral Health Asset Management, LLC$5M
Largest trims
- Point72 Asset Management, L.P.$54M
- Deep Track Capital, LP$35M
- Redmile Group, LLC$34M
- BlackRock, Inc.$30M
- GENERAL ATLANTIC, L.P.$29M
- Pictet Asset Management Holding SA$24M
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 | 8,925,642 | $138M | 7.1% | 2026-Q1 |
| Redmile Group, LLC trimmed | 7,732,808 | $120M | 6.1% | 2026-Q1 |
| Vestal Point Capital, LP added | 6,500,000 | $101M | 5.2% | 2026-Q1 |
| Deep Track Capital, LP trimmed | 6,345,244 | $98M | 5.0% | 2026-Q1 |
| FMR LLC added | 5,219,886 | $81M | 4.1% | 2026-Q1 |
| STATE STREET CORP added | 5,141,195 | $80M | 4.1% | 2026-Q1 |
| MORGAN STANLEY added | 4,931,999 | $76M | 3.9% | 2026-Q1 |
| BAKER BROS. ADVISORS LP | 4,658,556 | $72M | 3.7% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 4,427,112 | $69M | 3.5% | 2026-Q1 |
| GENERAL ATLANTIC, L.P. trimmed | 4,101,865 | $64M | 3.3% | 2026-Q1 |
| PERCEPTIVE ADVISORS LLC added | 3,710,877 | $58M | 2.9% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 3,290,233 | $51M | 2.6% | 2026-Q1 |
| Pictet Asset Management Holding SA trimmed | 2,726,138 | $42M | 2.2% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,520,229 | $39M | 2.0% | 2026-Q1 |
| Rubric Capital Management LP | 2,473,885 | $38M | 2.0% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 2,295,024 | $36M | 1.8% | 2026-Q1 |
| Commodore Capital LP | 2,275,000 | $35M | 1.8% | 2026-Q1 |
| BRAIDWELL LP trimmed | 1,750,766 | $27M | 1.4% | 2026-Q1 |
| Trails Edge Capital Partners, LP | 1,743,220 | $27M | 1.4% | 2026-Q1 |
| ARK Investment Management LLC added | 1,721,135 | $27M | 1.4% | 2026-Q1 |
| Longaeva Partners L.P. added | 1,490,202 | $23M | 1.2% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,343,700 | $21M | 1.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,318,659 | $20M | 1.0% | 2026-Q1 |
| EVENTIDE ASSET MANAGEMENT, LLC | 1,297,893 | $20M | 1.0% | 2026-Q1 |
| Kynam Capital Management, LP trimmed | 1,194,757 | $19M | 0.9% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 1,181,146 | $18M | 0.9% | 2026-Q1 |
| Amova Asset Management Americas, Inc. trimmed | 1,181,146 | $18M | 0.9% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,102,266 | $17M | 0.9% | 2026-Q1 |
| UBS Group AG added | 976,362 | $15M | 0.8% | 2026-Q1 |
| Affinity Asset Advisors, LLC | 967,620 | $15M | 0.8% | 2026-Q1 |
| Soleus Capital Management, L.P. trimmed | 938,163 | $15M | 0.7% | 2026-Q1 |
| Woodline Partners LP | 925,444 | $14M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 924,039 | $14M | 0.7% | 2026-Q1 |
| Capital World Investors new | 893,327 | $14M | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 854,466 | $13M | 0.7% | 2026-Q1 |
| Nuveen, LLC added | 812,601 | $13M | 0.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 802,153 | $12M | 0.6% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 780,696 | $12M | 0.6% | 2026-Q1 |
| Integral Health Asset Management, LLC added | 700,000 | $11M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 632,231 | $10M | 0.5% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 620,820 | $10M | 0.5% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 561,250 | $9M | 0.4% | 2026-Q1 |
| Handelsbanken Fonder AB | 547,000 | $8M | 0.4% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 546,297 | $8M | 0.4% | 2026-Q1 |
| Candriam S.C.A. | 534,259 | $8M | 0.4% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 485,212 | $8M | 0.4% | 2026-Q1 |
| CITIGROUP INC added | 477,410 | $7M | 0.4% | 2026-Q1 |
| Elmind Capital, LP | 460,000 | $7M | 0.4% | 2026-Q1 |
| Point72 Asset Management, L.P. trimmed | 449,106 | $7M | 0.4% | 2026-Q1 |
| Fisher Asset Management, LLC new | 384,831 | $6M | 0.3% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 344,203 | $5M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 353,733 | $5M | 0.3% | 2026-Q1 |
| STEMPOINT CAPITAL LP added | 315,226 | $5M | 0.2% | 2026-Q1 |
| ArrowMark Colorado Holdings LLC | 314,762 | $5M | 0.2% | 2026-Q1 |
| Rhenman & Partners Asset Management AB trimmed | 313,500 | $5M | 0.2% | 2026-Q1 |
| BESSEMER GROUP INC | 306,003 | $5M | 0.2% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 303,109 | $5M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp added | 295,345 | $5M | 0.2% | 2026-Q1 |
| Foresite Capital Management V, LLC trimmed | 265,000 | $4M | 0.2% | 2026-Q1 |
| WestHill Financial Advisors, Inc. | 228,333 | $4M | 0.2% | 2026-Q1 |
| HighVista Strategies LLC added | 226,546 | $4M | 0.2% | 2026-Q1 |
| Squarepoint Ops LLC added | 224,535 | $3M | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 223,363 | $3M | 0.2% | 2026-Q1 |
| Trexquant Investment LP added | 209,694 | $3M | 0.2% | 2026-Q1 |
| Invesco Ltd. trimmed | 203,609 | $3M | 0.2% | 2026-Q1 |
| TD Asset Management Inc trimmed | 189,250 | $3M | 0.2% | 2026-Q1 |
| Abu Dhabi Investment Council Co P.J.S.C new | 185,311 | $3M | 0.1% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 179,177 | $3M | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 157,350 | $2M | 0.1% | 2026-Q1 |
| Swiss National Bank | 150,000 | $2M | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC added | 149,523 | $2M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 123,367 | $2M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 98,190 | $2M | 0.1% | 2026-Q1 |
| Burkehill Global Management, LP | 118,972 | $2M | 0.1% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 118,000 | $2M | 0.1% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC added | 107,663 | $2M | 0.1% | 2026-Q1 |
| Boxer Capital Management, LLC | 100,000 | $2M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 99,042 | $2M | 0.1% | 2026-Q1 |
| Jasper Ridge Partners, L.P. | 95,711 | $1M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 5,230,597 | $99M | 5.1% | 2025-Q4 stale |
| RA CAPITAL MANAGEMENT, L.P. | 1,333,333 | $16M | 0.8% | 2025-Q1 stale |
| Logos Global Management LP added | 500,000 | $9M | 0.5% | 2025-Q4 stale |
| Driehaus Capital Management LLC trimmed | 715,940 | $9M | 0.4% | 2025-Q1 stale |
| NORGES BANK added | 318,800 | $7M | 0.4% | 2025-Q3 stale |
| Artisan Partners Limited Partnership trimmed | 580,749 | $7M | 0.3% | 2025-Q2 stale |
| SAMLYN CAPITAL, LLC trimmed | 515,103 | $6M | 0.3% | 2025-Q1 stale |
| Ensign Peak Advisors, Inc | 230,828 | $4M | 0.2% | 2025-Q4 stale |
| Patient Square Capital LP added | 437,237 | $4M | 0.2% | 2025-Q3 stale |
| Cubist Systematic Strategies, LLC added | 327,952 | $3M | 0.2% | 2025-Q3 stale |
| T. Rowe Price Investment Management, Inc. trimmed | 154,633 | $3M | 0.2% | 2025-Q4 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 154,459 | $3M | 0.1% | 2025-Q4 stale |
| WASATCH ADVISORS LP trimmed | 313,889 | $3M | 0.1% | 2025-Q3 stale |
| Parkman Healthcare Partners LLC trimmed | 228,271 | $3M | 0.1% | 2025-Q2 stale |
| SPHERA FUNDS MANAGEMENT LTD. trimmed | 124,000 | $2M | 0.1% | 2025-Q4 stale |
| MARSHALL WACE, LLP added | 246,788 | $2M | 0.1% | 2025-Q3 stale |
| Balyasny Asset Management L.P. trimmed | 118,481 | $2M | 0.1% | 2025-Q4 stale |
| Hudson Bay Capital Management LP trimmed | 110,000 | $2M | 0.1% | 2025-Q4 stale |
| Polar Asset Management Partners Inc. added | 154,400 | $2M | 0.1% | 2025-Q2 stale |
| TWO SIGMA ADVISERS, LP trimmed | 174,700 | $2M | 0.1% | 2025-Q3 stale |
| PRIMECAP MANAGEMENT CO/CA/ trimmed | 170,000 | $2M | 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.