Who owns Nkarta (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-Q2 13F filings (latest filed 2026-09-22). 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 2026-Q1 and 2026-Q2: 28 added or opened and 5 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 0.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.3pp 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 2026-Q1 and 2026-Q2, across 132 tracked filers holding NKTX, 75 increased or opened the position and 53 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 2026-Q1 and 2026-Q2 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 2
- Blackstone Inc.$2M
- MARSHALL WACE, LLP$2M
Full exits 3
- TANG CAPITAL MANAGEMENT LLC$3M
- ACADIAN ASSET MANAGEMENT LLC$3M
- GSA CAPITAL PARTNERS LLP$606K
Largest adds
- BlackRock, Inc.$8M
- RA CAPITAL MANAGEMENT, L.P.$8M
- NEA Management Company, LLC$3M
- SAMSARA BIOCAPITAL, LLC$3M
- SR One Capital Management, LP$2M
- CITADEL ADVISORS LLC$2M
Largest trims
- Alyeska Investment Group, L.P.$3M
- RENAISSANCE TECHNOLOGIES LLC$323K
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 10,805,129 | $31M | 18.8% | 2026-Q2 |
| BlackRock, Inc. added | 6,300,212 | $18M | 11.0% | 2026-Q2 |
| NEA Management Company, LLC | 3,568,781 | $10M | 6.2% | 2026-Q2 |
| SAMSARA BIOCAPITAL, LLC | 3,507,666 | $10M | 6.1% | 2026-Q2 |
| SR One Capital Management, LP | 3,333,333 | $9M | 5.8% | 2026-Q2 |
| GSK plc | 3,150,732 | $9M | 5.5% | 2026-Q2 |
| Monaco Asset Management SAM trimmed | 2,373,400 | $7M | 4.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,226,415 | $6M | 3.9% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 2,174,745 | $6M | 3.8% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 1,873,293 | $5M | 3.3% | 2026-Q2 |
| WASATCH ADVISORS LP | 1,577,847 | $4M | 2.8% | 2026-Q2 |
| STATE STREET CORP added | 1,286,109 | $4M | 2.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,285,507 | $4M | 2.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,177,652 | $3M | 2.1% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 1,054,251 | $3M | 1.8% | 2026-Q2 |
| AWM Investment Company, Inc. | 906,000 | $3M | 1.6% | 2026-Q2 |
| Blackstone Inc. | 747,044 | $2M | 1.3% | 2026-Q2 |
| MARSHALL WACE, LLP added | 673,010 | $2M | 1.2% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 583,249 | $2M | 1.0% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 562,980 | $2M | 1.0% | 2026-Q2 |
| Peapod Lane Capital LLC trimmed | 549,923 | $2M | 1.0% | 2026-Q2 |
| Alyeska Investment Group, L.P. trimmed | 484,840 | $1M | 0.8% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 483,211 | $1M | 0.8% | 2026-Q2 |
| Nuveen, LLC added | 469,555 | $1M | 0.8% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 433,982 | $1M | 0.8% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 371,425 | $1M | 0.6% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 348,186 | $985K | 0.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 323,659 | $916K | 0.6% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 301,916 | $854K | 0.5% | 2026-Q2 |
| XTX Topco Ltd added | 289,985 | $821K | 0.5% | 2026-Q2 |
| MORGAN STANLEY trimmed | 263,773 | $746K | 0.5% | 2026-Q2 |
| Invesco Ltd. added | 207,315 | $587K | 0.4% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 177,038 | $501K | 0.3% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 162,509 | $460K | 0.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 130,975 | $371K | 0.2% | 2026-Q2 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P trimmed | 130,000 | $368K | 0.2% | 2026-Q2 |
| FMR LLC added | 129,942 | $368K | 0.2% | 2026-Q2 |
| Susquehanna Portfolio Strategies, LLC added | 126,339 | $358K | 0.2% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 122,800 | $348K | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 121,570 | $344K | 0.2% | 2026-Q2 |
| Qube Research & Technologies Ltd new | 120,809 | $342K | 0.2% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP new | 115,189 | $326K | 0.2% | 2026-Q2 |
| Bank of New York Mellon Corp added | 114,833 | $325K | 0.2% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 111,625 | $316K | 0.2% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 106,806 | $302K | 0.2% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 100,950 | $213K | 0.1% | 2026-Q2 |
| Man Group plc trimmed | 100,047 | $283K | 0.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC | 94,851 | $268K | 0.2% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC new | 82,658 | $234K | 0.1% | 2026-Q2 |
| Mariner, LLC added | 78,504 | $222K | 0.1% | 2026-Q2 |
| Marquette Asset Management, LLC new | 75,071 | $212K | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 71,032 | $201K | 0.1% | 2026-Q2 |
| Empowered Funds, LLC new | 69,642 | $197K | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 66,744 | $189K | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 65,994 | $183K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 60,473 | $171K | 0.1% | 2026-Q2 |
| Rangeley Capital, LLC trimmed | 60,000 | $170K | 0.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 56,979 | $161K | 0.1% | 2026-Q2 |
| Cerity Partners LLC added | 55,260 | $156K | 0.1% | 2026-Q2 |
| PRELUDE CAPITAL MANAGEMENT, LLC added | 53,600 | $152K | 0.1% | 2026-Q2 |
| Verdad Advisers, LP new | 51,503 | $146K | 0.1% | 2026-Q2 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 48,143 | $143K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 45,723 | $129K | 0.1% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 40,868 | $116K | 0.1% | 2026-Q2 |
| Samalin Investment Counsel, LLC trimmed | 40,750 | $115K | 0.1% | 2026-Q2 |
| SEI INVESTMENTS CO | 40,046 | $113K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 37,738 | $107K | 0.1% | 2026-Q2 |
| MERCER GLOBAL ADVISORS INC /ADV added | 33,726 | $95K | 0.1% | 2026-Q2 |
| Forefront Analytics, LLC trimmed | 28,955 | $82K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 28,922 | $82K | 0.1% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 28,700 | $81K | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 28,644 | $81K | 0.0% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ | 27,843 | $79K | 0.0% | 2026-Q2 |
| UBS Group AG trimmed | 26,230 | $74K | 0.0% | 2026-Q2 |
| Graham Capital Management, L.P. added | 23,978 | $68K | 0.0% | 2026-Q2 |
| Abel Hall, LLC trimmed | 23,245 | $66K | 0.0% | 2026-Q2 |
| SIMPLEX TRADING, LLC added | 23,016 | $65K | 0.0% | 2026-Q2 |
| Creative Planning new | 21,990 | $62K | 0.0% | 2026-Q2 |
| Vanguard Personalized Indexing Management, LLC trimmed | 21,062 | $60K | 0.0% | 2026-Q2 |
| CITIGROUP INC added | 20,638 | $58K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 20,584 | $58K | 0.0% | 2026-Q2 |
| CAPTRUST FINANCIAL ADVISORS new | 18,515 | $52K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 18,095 | $51K | 0.0% | 2026-Q2 |
| DIVERSIFIED TRUST CO new | 17,363 | $49K | 0.0% | 2026-Q2 |
| WINTON GROUP Ltd new | 15,800 | $45K | 0.0% | 2026-Q2 |
| Merit Financial Group, LLC added | 15,703 | $44K | 0.0% | 2026-Q2 |
| BRIGHTON JONES LLC new | 14,751 | $42K | 0.0% | 2026-Q2 |
| Focus Partners Wealth new | 12,940 | $37K | 0.0% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC trimmed | 12,478 | $35K | 0.0% | 2026-Q2 |
| Arax Advisory Partners added | 12,060 | $34K | 0.0% | 2026-Q2 |
| Spark Investment Management LLC new | 11,700 | $33K | 0.0% | 2026-Q2 |
| Quadrature Capital Ltd trimmed | 11,508 | $33K | 0.0% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 10,914 | $31K | 0.0% | 2026-Q2 |
| Pallas Capital Advisors LLC added | 10,851 | $31K | 0.0% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC new | 10,725 | $30K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey | 10,638 | $30K | 0.0% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC trimmed | 10,171 | $29K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 8,482 | $24K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND | 8,455 | $24K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 8,168 | $23K | 0.0% | 2026-Q2 |
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.