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NBTX

Nanobiotix
NBTX

15 hedge funds and large institutions have $176M invested in Nanobiotix in 2026 Q1 according to their latest regulatory filings, with 2 funds opening new positions, 3 increasing their positions, 5 reducing their positions, and 1 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more first-time investments, than exits

New positions opened: 2 | Existing positions closed: 1

33% more capital invested

Capital invested by funds: $132M → $176M (+$44.1M)

7% more funds holding

Funds holding: 14 → 15 (+1)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

0.14% less ownership

Funds ownership: 11.89% → 11.75% (-0.14%)

40% less repeat investments, than reductions

Existing positions increased: 3 | Existing positions reduced: 5

Holders
15
Holders Change
+1
Holders Change %
+7.14%
% of All Funds
0.18%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
2
Increased
3
Reduced
5
Closed
1
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Morgan Stanley
Morgan Stanley
New York
+$352K
2
UBS Group
UBS Group
Switzerland
+$106K
3
GI
GAMMA Investing
California
+$15.8K
4
Citigroup
Citigroup
New York
+$26
5
TRCT
Tower Research Capital (TRC)
New York
+$26

Top Sellers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
-$390K
2
Optiver Holding
Optiver Holding
Netherlands
-$71.8K
3
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
-$21.1K
4
Marshall Wace
Marshall Wace
United Kingdom
-$6.88K
5
RhumbLine Advisers
RhumbLine Advisers
Massachusetts
-$1.61K
Name Holding Trade Value Shares
Change 		Change in
Stake
JJ
1
Johnson & Johnson
New Jersey
$174M – – –
Morgan Stanley
2
Morgan Stanley
New York
$1.12M +$352K +13,351 +58%
Optiver Holding
3
Optiver Holding
Netherlands
$417K -$71.8K -2,724 -17%
Marshall Wace
4
Marshall Wace
United Kingdom
$285K -$6.88K -261 -3%
UBS Group
5
UBS Group
Switzerland
$172K +$106K +4,027 +263%
BNP Paribas Financial Markets
6
BNP Paribas Financial Markets
France
$110K -$1.08K -41 -1%
RhumbLine Advisers
7
RhumbLine Advisers
Massachusetts
$70.4K -$1.61K -61 -3%
Royal Bank of Canada
8
Royal Bank of Canada
Ontario, Canada
$56K -$21.1K -800 -30%
GI
9
GAMMA Investing
California
$25.6K +$15.8K +599 +262%
EWA
10
EverSource Wealth Advisors
Alabama
$15.9K – – –
Osaic Holdings
11
Osaic Holdings
Arizona
$15.4K – – –
Wells Fargo
12
Wells Fargo
California
$6.17K – – –
National Bank of Canada
13
National Bank of Canada
Quebec, Canada
$394 – – –
Citigroup
14
Citigroup
New York
$31 +$26 +1 New
TRCT
15
Tower Research Capital (TRC)
New York
$31 +$26 +1 New
Millennium Management
16
Millennium Management
New York
– -$390K -16,869 Closed

NBTX Hedge Fund Activity: Q1 2026 in Review

15 of the 8,131 institutional investors tracked by Wall St. Rank reported a position in Nanobiotix (NBTX) for Q1 2026, worth a combined $176M — up 33% from $132M a quarter earlier.

Buyers outnumbered sellers: 2 funds opened new NBTX positions and 1 closed out — a net gain of 1 holder — while 3 added to existing stakes and 5 trimmed.

The largest buyer was Morgan Stanley, adding an estimated $352K. The largest seller was Millennium Management, exiting entirely with an estimated $390K sold.

  • 15 institutional investors held Nanobiotix (NBTX) as of Q1 2026, up from 14 in Q4 2025.
  • Funds reported $176M of Nanobiotix stock for Q1 2026, up 33% quarter-over-quarter.
  • 2 funds opened new Nanobiotix positions in Q1 2026 and 1 closed out, a net change of +1 holder.
  • The largest Nanobiotix buyer in Q1 2026 was Morgan Stanley, an estimated $352K added.
  • The largest Nanobiotix seller in Q1 2026 was Millennium Management, an estimated $390K sold.

Based on aggregated 13F filings for Q1 2026.