NBTX Institutional Ownership
Who owns Nanobiotix S.A. and what the big funds did with it last quarter, from every SEC 13F filing. 19 funds reported holding NBTX at Jun 30, 2026.
- ▲13 buying vs 5 selling
- ▲Shares held by funds +1.7%
- ▲Funds holding +4
- ▲Superinvestors: 1 added, 0 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 | 19 | 15 | +26.7% |
| In funds' top 10 | 1 | 1 | 0.0% |
| 13F shares | 5.8M | 5.7M | +1.7% |
| Held by funds | – | – | – |
| New positions | 7 | 2 | +250.0% |
| Increased | 6 | 3 | +100.0% |
| Reduced | 2 | 5 | −60.0% |
| Sold out | 3 | 1 | +200.0% |
| Calls (shares) | 0 | 0 | – |
| Puts (shares) | 0 | 0 | – |
| Put/call ratio | – | – | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in NBTX
All superinvestors →
Who owns NBTX
share of fund held shares- Index and passive funds0.0%
- Active managers and hedge funds98.2%
- Banks and brokers1.8%
- Pensions, insurers and other0.0%
The top 10 holders own 99.9% of all NBTX shares that funds reported. Groups are our own grouping of filers by name.
Filed so far for Q3 2026
5 funds changed their position- GAMMA Investing LLCAdded+149 sh
- Stone House Investment Management, LLCSold out−76 sh
- Lanark Financial, Inc.New+51 sh
- Nisa Investment Advisors, LLCNew+28 sh
- Physician Wealth Advisors, Inc.New+13 sh
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Johnson & Johnson | – | 5.6M | $212M | 0 |
| 2 | Morgan Stanley | – | 50K | $1.9M | +14K |
| 3 | Jane Street Group, LLC | – | 32K | $1.2M | +32K |
| 4 | Hrt Financial LP | – | 27K | $1M | +27K |
| 5 | XTX Topco Ltd | – | 16K | $598K | +16K |
| 6 | Optiver Holding B.V. | – | 14K | $514K | +130 |
| 7 | Marshall Wace, LLP | – | 10K | $379K | +805 |
| 8 | Citadel Advisors LLC | – | 6,042 | $228K | +6,042 |
| 9 | Bnp Paribas Financial Markets | – | 4,044 | $152K | +485 |
| 10 | UBS Group AG | – | 2,577 | $97K | −2,980 |
- Jane Street Group, LLC+32K sh+$1.2M
- Hrt Financial LP+27K sh+$1M
- XTX Topco Ltd+16K sh+$598K
- Morgan Stanley+14K sh+$510K
- Citadel Advisors LLC+6,042 sh+$228K
- Jpmorgan Chase & Co+1,706 sh+$61K
- Marshall Wace, LLP+805 sh+$30K
- Bnp Paribas Financial Markets+485 sh+$18K
- UBS Group AG−2,980 sh−$112K
- Rhumbline Advisers−779 sh−$29K
- EverSource Wealth Advisors, LLC−514 sh−$16K
- Tower Research Capital LLC (TRC)−1 sh−$31
- Citigroup Inc−1 sh−$31
NBTX institutional ownership FAQ
Who owns the most NBTX stock?
In Q2 2026 13F filings the largest holder of NBTX was Johnson & Johnson, followed by Morgan Stanley and Jane Street Group, LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of NBTX is owned by institutions?
19 funds reported holding 5.8M NBTX shares at Jun 30, 2026.
Are hedge funds buying NBTX?
In Q2 2026, 13 funds bought NBTX (7 of them new positions) and 5 sold (3 sold out completely). Among well known investors, 1 added and 0 cut. Our fund sentiment for NBTX is strongly bullish.
What is NBTX's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this NBTX 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.