KNSA Institutional Ownership
Who owns Kiniksa Pharmaceuticals International, plc and what the big funds did with it last quarter, from every SEC 13F filing. 266 funds reported holding KNSA at Jun 30, 2026.
- ▲154 buying vs 107 selling
- ▲Shares held by funds +3.4%
- ▲Funds holding +40
- ●Superinvestors: 2 added, 2 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 266 | 226 | +17.7% |
| In funds' top 10 | 5 | 3 | +66.7% |
| 13F shares | 46.9M | 45.4M | +3.4% |
| Held by funds | – | – | – |
| New positions | 68 | 35 | +94.3% |
| Increased | 86 | 75 | +14.7% |
| Reduced | 81 | 84 | −3.6% |
| Sold out | 26 | 34 | −23.5% |
| Calls (shares) | 0 | 999K | −100.0% |
| Puts (shares) | 300K | 0 | – |
| Put/call ratio | – | 0.00 | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in KNSA
All superinvestors →
Who owns KNSA
share of fund held shares- Index and passive funds20.3%
- Active managers and hedge funds71.2%
- Banks and brokers7.3%
- Pensions, insurers and other1.2%
The top 10 holders own 53.2% of all KNSA shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
63 funds changed their position- Principal Financial Group IncAdded+100K sh
- Sowell Financial Services LLCNew+41K sh
- Essex Investment Management Co LLCTrimmed−39K sh
- Financial Enhancement Group LLCSold out−31K sh
- Fonville Wealth Management LLCNew+20K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Fmr LLC | – | 7M | $446M | +148K |
| 2 | Rubric Capital Management LP | – | 4M | $256M | +250K |
| 3 | Baker Bros. Advisors LP | – | 2.8M | $181M | +8,397 |
| 4 | BlackRock, Inc. | – | 2.7M | $175M | +2.3M |
| 5 | Tang Capital Management LLC | – | 2.3M | $145M | 0 |
| 6 | Vanguard Portfolio Management LLC | – | 1.9M | $122M | +145K |
| 7 | Vanguard Capital Management LLC | – | 1.4M | $87M | +28K |
| 8 | Morgan Stanley | – | 1M | $64.7M | +13K |
| 9 | Arrowstreet Capital, Limited Partnership | – | 958K | $61.2M | +65K |
| 10 | Spruce Street Capital LP | – | 918K | $58.7M | +157K |
- BlackRock, Inc.+2.3M sh+$144M
- Invesco Ltd.+745K sh+$47.7M
- State Street Corp+628K sh+$40.1M
- Geode Capital Management, LLC+560K sh+$35.8M
- Northern Trust Corp+278K sh+$17.8M
- Rubric Capital Management LP+250K sh+$16M
- Orbimed Advisors LLC+240K sh+$15.3M
- Bank of New York Mellon Corp+215K sh+$13.8M
- Acadian Asset Management LLC−657K sh−$42M
- Millennium Management LLC−471K sh−$30.1M
- Citadel Advisors LLC−433K sh−$27.7M
- D. E. Shaw & Co., Inc.−390K sh−$24.9M
- Qube Research & Technologies Ltd−383K sh−$24.5M
- Susquehanna International Group, LLP−366K sh−$23.4M
- Bank of America Corp /de/−323K sh−$20.6M
- Soleus Capital Management, L.P.−275K sh−$17.6M
KNSA institutional ownership FAQ
Who owns the most KNSA stock?
In Q2 2026 13F filings the largest holder of KNSA was Fmr LLC, followed by Rubric Capital Management LP and Baker Bros. Advisors LP. Index fund managers are usually the biggest holders of large companies.
What percentage of KNSA is owned by institutions?
266 funds reported holding 46.9M KNSA shares at Jun 30, 2026.
Are hedge funds buying KNSA?
In Q2 2026, 154 funds bought KNSA (68 of them new positions) and 107 sold (26 sold out completely). Among well known investors, 2 added and 2 cut. Our fund sentiment for KNSA is bullish.
What is KNSA's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this KNSA ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.