NANOBIOTIX SA - ADR (NBTX) Top Institutional Shareholders
NANOBIOTIX SA - ADR (NBTX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $175.93M in NBTX holdings during the latest filing period.
Johnson & Johnson is currently the largest disclosed institutional shareholder of NBTX tracked by InsiderSet, reporting ownership valued at approximately $173.61M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $202.85M, representing an estimated gain of +16.84% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed NBTX value among the investors covered in this analysis. Major shareholders include Johnson & Johnson, Morgan Stanley, Optiver Holding B.V., and several other long-term asset managers with concentrated positions in NANOBIOTIX SA - ADR (NBTX).
This page ranks the largest institutional NBTX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
15
Total Reported Value
$175.93M
Largest Holder
Johnson & Johnson
Largest Position
$173.61M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
16
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Johnson & Johnson | 26.61% | 5,623,816 | $173,607,200 | $202,851,043 | +$29,243,843 | +16.84% | |
| Morgan Stanley | 0.00% | 36,274 | $1,119,778 | $1,308,403 | +$188,625 | +16.84% | |
| Optiver Holding B.V. | 0.02% | 13,501 | $416,776 | $486,981 | +$70,205 | +16.84% | |
| Marshall Wace, Llp | 0.00% | 9,239 | $285,207 | $333,251 | +$48,044 | +16.85% | |
| Ubs Group Ag | 0.00% | 5,557 | $171,545 | $200,441 | +$28,896 | +16.84% | |
| Bnp Paribas Financial Markets | 0.00% | 3,559 | $109,866 | $128,373 | +$18,507 | +16.85% | |
| Rhumbline Advisers | 0.00% | 2,281 | $70,409 | $82,276 | +$11,867 | +16.85% | |
| Royal Bank Of Canada | 0.00% | 1,825 | $56,000 | $65,828 | +$9,828 | +17.55% | |
| Eversource Wealth Advisors, Llc | 0.00% | 882 | $46,499 | $31,814 | -$14,685 | -31.58% | |
| Gamma Investing Llc | 0.00% | 828 | $25,560 | $29,866 | +$4,306 | +16.85% | |
| Osaic Holdings, Inc. | 0.00% | 500 | $15,435 | $18,035 | +$2,600 | +16.84% | |
| Wells Fargo & Company/Mn | 0.00% | 200 | $6,174 | $7,214 | +$1,040 | +16.84% | |
| National Bank Of Canada | 0.00% | 13 | $394 | $469 | +$75 | +19.01% | |
| Citigroup Inc | 0.00% | 1 | $31 | $36 | +$5 | +16.35% | |
| Tower Research Capital Llc (Trc) | 0.00% | 1 | $31 | $36 | +$5 | +16.35% |
Frequently asked questions about NBTX
Who owns the most NBTX stock?
The largest holders of NBTX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for NANOBIOTIX SA - ADR (NBTX).
Is NBTX widely held by superinvestors?
Many widely followed stocks like NBTX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly NBTX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.