Who owns Nkarta, Inc. (NKTX)
Which tracked institutional funds hold NKTX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NKTX 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 NKTX is one-sided between 2025-Q4 and 2026-Q1: 23 added or opened and 4 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
NKTX’s largest tracked holder by dollar value, RA CAPITAL MANAGEMENT, L.P., sizes it at 0.2% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.2pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in NKTX 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 125 tracked filers holding NKTX, 66 increased or opened the position and 43 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 NKTX 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 3
- VANGUARD CAPITAL MANAGEMENT LLC$4M
- VANGUARD FIDUCIARY TRUST CO$692K
- VANGUARD PORTFOLIO MANAGEMENT LLC$574K
Full exits 3
- VANGUARD GROUP INC$5M
- Blackstone Inc.$1M
- TWO SIGMA ADVISERS, LP$1M
Largest adds
- RA CAPITAL MANAGEMENT, L.P.$3M
- TWO SIGMA INVESTMENTS, LP$3M
- BlackRock, Inc.$2M
- ACADIAN ASSET MANAGEMENT LLC$1M
- CITADEL ADVISORS LLC$1M
- NEA Management Company, LLC$928K
Largest trims
- HSBC HOLDINGS PLC$274K
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 |
|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 10,805,129 | $23M | 17.2% | 2026-Q1 |
| BlackRock, Inc. added | 4,508,473 | $10M | 7.2% | 2026-Q1 |
| NEA Management Company, LLC | 3,568,781 | $8M | 5.7% | 2026-Q1 |
| SAMSARA BIOCAPITAL, LLC | 3,507,666 | $7M | 5.6% | 2026-Q1 |
| SR One Capital Management, LP | 3,333,333 | $7M | 5.3% | 2026-Q1 |
| GSK plc | 3,150,732 | $7M | 5.0% | 2026-Q1 |
| Monaco Asset Management SAM trimmed | 2,521,932 | $5M | 4.0% | 2026-Q1 |
| Alyeska Investment Group, L.P. | 2,084,840 | $4M | 3.3% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 2,047,376 | $4M | 3.3% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,011,421 | $4M | 3.2% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,783,994 | $4M | 2.8% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 1,732,372 | $4M | 2.8% | 2026-Q1 |
| WASATCH ADVISORS LP added | 1,577,847 | $3M | 2.5% | 2026-Q1 |
| TANG CAPITAL MANAGEMENT LLC | 1,480,823 | $3M | 2.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,267,915 | $3M | 2.0% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 1,259,776 | $3M | 2.0% | 2026-Q1 |
| STATE STREET CORP added | 1,237,474 | $3M | 2.0% | 2026-Q1 |
| AWM Investment Company, Inc. | 906,000 | $2M | 1.4% | 2026-Q1 |
| Peapod Lane Capital LLC added | 676,212 | $1M | 1.1% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 576,680 | $1M | 0.9% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 575,001 | $1M | 0.9% | 2026-Q1 |
| Nuveen, LLC added | 445,798 | $941K | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 417,172 | $880K | 0.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 385,000 | $812K | 0.6% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 346,593 | $731K | 0.6% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 334,032 | $705K | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 328,040 | $692K | 0.5% | 2026-Q1 |
| MORGAN STANLEY added | 313,054 | $661K | 0.5% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP added | 287,365 | $606K | 0.5% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC | 284,210 | $600K | 0.5% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 272,079 | $574K | 0.4% | 2026-Q1 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P added | 175,000 | $369K | 0.3% | 2026-Q1 |
| Woodline Partners LP trimmed | 168,110 | $355K | 0.3% | 2026-Q1 |
| XTX Topco Ltd added | 153,816 | $325K | 0.2% | 2026-Q1 |
| Man Group plc added | 152,622 | $322K | 0.2% | 2026-Q1 |
| Invesco Ltd. added | 150,940 | $318K | 0.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 145,688 | $307K | 0.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 130,975 | $276K | 0.2% | 2026-Q1 |
| FMR LLC added | 129,099 | $272K | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 123,493 | $261K | 0.2% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 120,304 | $254K | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 110,004 | $232K | 0.2% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 107,800 | $227K | 0.2% | 2026-Q1 |
| IEQ CAPITAL, LLC added | 102,849 | $217K | 0.2% | 2026-Q1 |
| STIFEL FINANCIAL CORP trimmed | 95,203 | $201K | 0.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 94,851 | $200K | 0.2% | 2026-Q1 |
| Samalin Investment Counsel, LLC trimmed | 93,819 | $198K | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 89,870 | $166K | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 76,627 | $162K | 0.1% | 2026-Q1 |
| Virtu Financial LLC added | 75,781 | $160K | 0.1% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 68,305 | $144K | 0.1% | 2026-Q1 |
| Rangeley Capital, LLC added | 68,000 | $143K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 63,500 | $134K | 0.1% | 2026-Q1 |
| BAILARD, INC. | 63,400 | $134K | 0.1% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC trimmed | 62,240 | $131K | 0.1% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC added | 61,934 | $131K | 0.1% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 60,348 | $127K | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 56,576 | $119K | 0.1% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 53,442 | $113K | 0.1% | 2026-Q1 |
| PRELUDE CAPITAL MANAGEMENT, LLC trimmed | 52,200 | $110K | 0.1% | 2026-Q1 |
| UBS Group AG trimmed | 47,497 | $100K | 0.1% | 2026-Q1 |
| Forefront Analytics, LLC added | 43,835 | $92K | 0.1% | 2026-Q1 |
| CWM, LLC added | 42,632 | $90K | 0.1% | 2026-Q1 |
| Odyssean, LLC new | 42,050 | $89K | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 40,046 | $84K | 0.1% | 2026-Q1 |
| Mariner, LLC added | 34,274 | $72K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 28,922 | $62K | 0.0% | 2026-Q1 |
| Cerity Partners LLC added | 28,439 | $60K | 0.0% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ | 27,843 | $59K | 0.0% | 2026-Q1 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 23,531 | $55K | 0.0% | 2026-Q1 |
| Abel Hall, LLC added | 24,113 | $51K | 0.0% | 2026-Q1 |
| Vanguard Personalized Indexing Management, LLC added | 21,353 | $45K | 0.0% | 2026-Q1 |
| NINE MASTS CAPITAL Ltd new | 21,131 | $45K | 0.0% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 20,955 | $44K | 0.0% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 20,895 | $44K | 0.0% | 2026-Q1 |
| SIMPLEX TRADING, LLC added | 20,486 | $43K | 0.0% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 18,095 | $38K | 0.0% | 2026-Q1 |
| Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors new | 16,000 | $34K | 0.0% | 2026-Q1 |
| Graham Capital Management, L.P. trimmed | 15,258 | $32K | 0.0% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 14,384 | $30K | 0.0% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD | 14,200 | $30K | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC added | 2,597,370 | $5M | 3.6% | 2025-Q4 stale |
| ORBIMED ADVISORS LLC | 821,400 | $2M | 1.1% | 2025-Q1 stale |
| Blackstone Inc. | 747,044 | $1M | 1.0% | 2025-Q4 stale |
| Affinity Asset Advisors, LLC | 800,000 | $1M | 1.0% | 2025-Q2 stale |
| TWO SIGMA ADVISERS, LP added | 647,200 | $1M | 0.9% | 2025-Q4 stale |
| MARSHALL WACE, LLP added | 155,036 | $287K | 0.2% | 2025-Q4 stale |
| Thrivent Financial for Lutherans trimmed | 63,143 | $105K | 0.1% | 2025-Q2 stale |
| Forefront Wealth Partners, LLC new | 39,452 | $82K | 0.1% | 2025-Q3 stale |
| Atom Investors LP trimmed | 35,701 | $74K | 0.1% | 2025-Q3 stale |
| Cubist Systematic Strategies, LLC trimmed | 34,340 | $71K | 0.1% | 2025-Q3 stale |
| Aberdeen Group plc | 28,988 | $53K | 0.0% | 2025-Q1 stale |
| Keel Point, LLC new | 26,403 | $49K | 0.0% | 2025-Q1 stale |
| Corebridge Financial, Inc. trimmed | 25,922 | $48K | 0.0% | 2025-Q1 stale |
| Squarepoint Ops LLC trimmed | 23,925 | $44K | 0.0% | 2025-Q1 stale |
| Quadrature Capital Ltd trimmed | 22,111 | $41K | 0.0% | 2025-Q4 stale |
| SG Americas Securities, LLC trimmed | 21,218 | $39K | 0.0% | 2025-Q4 stale |
| TWO SIGMA SECURITIES, LLC new | 20,189 | $37K | 0.0% | 2025-Q1 stale |
| Dynamic Technology Lab Private Ltd added | 19,970 | $37K | 0.0% | 2025-Q4 stale |
| HRT FINANCIAL LP trimmed | 17,562 | $32K | 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.