Nanobiotix
NBTX
14 hedge funds and large institutions have $132M invested in Nanobiotix in 2025 Q4 according to their latest regulatory filings, with 5 funds opening new positions, 5 increasing their positions, 1 reducing their positions, and 2 closing their positions.
400% more repeat investments, than reductions
Existing positions increased: 5 | Existing positions reduced: 1
150% more first-time investments, than exits
New positions opened: 5 | Existing positions closed: 2
27% more funds holding
Funds holding: 11 → 14 (+3)
24% more capital invested
Capital invested by funds: $107M → $132M (+$25.2M)
0.08% more ownership
Funds ownership: 11.71% → 11.78% (+0.08%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
+$449K |
| 2 |
Millennium Management
New York
|
+$369K |
| 3 |
Optiver Holding
Amsterdam,
Netherlands
|
+$237K |
| 4 |
Marshall Wace
London,
United Kingdom
|
+$208K |
| 5 |
BNP Paribas Financial Markets
Paris,
France
|
+$69.9K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Geode Capital Management
Boston,
Massachusetts
|
-$192K |
| 2 |
UBS Group
Zurich,
Switzerland
|
-$13.8K |
| 3 |
Barclays
London,
United Kingdom
|
-$76 |
NBTX Hedge Fund Activity: Q4 2025 in Review
14 of the 8,281 institutional investors tracked by Wall St. Rank reported a position in Nanobiotix (NBTX) for Q4 2025, worth a combined $132M — up 24% from $107M a quarter earlier.
Buyers outnumbered sellers: 5 funds opened new NBTX positions and 2 closed out — a net gain of 3 holders — while 5 added to existing stakes and 1 trimmed.
The largest buyer was Morgan Stanley, adding an estimated $449K. The largest seller was Geode Capital Management, exiting entirely with an estimated $192K sold.
- 14 institutional investors held Nanobiotix (NBTX) as of Q4 2025, up from 11 in Q3 2025.
- Funds reported $132M of Nanobiotix stock for Q4 2025, up 24% quarter-over-quarter.
- 5 funds opened new Nanobiotix positions in Q4 2025 and 2 closed out, a net change of +3 holders.
- The largest Nanobiotix buyer in Q4 2025 was Morgan Stanley, an estimated $449K added.
- The largest Nanobiotix seller in Q4 2025 was Geode Capital Management, an estimated $192K sold.
Based on aggregated 13F filings for Q4 2025.