NRX PHARMACEUTICALS INC NRXP
COM NEW · Common Stock · CUSIP 629444209
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersWilmington, DE
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 43.3m as of 2026-08-14, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $4.09. Options: 5 managers hold calls ($3.6m notional), 3 hold puts ($388.5k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q2 2024 | 20 |
| Q3 2024 | 19 |
| Q4 2024 | 26 |
| Q1 2025 | 23 |
| Q2 2025 | 26 |
| Q3 2025 | 24 |
| Q4 2025 | 28 |
| Q1 2026 | 33 |
| Q2 2026 | 47 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 7 | 7 |
| Q4 2024 | 14 | 6 |
| Q1 2025 | 10 | 12 |
| Q2 2025 | 15 | 6 |
| Q3 2025 | 17 | 8 |
| Q4 2025 | 13 | 13 |
| Q1 2026 | 22 | 5 |
| Q2 2026 | 35 | 9 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $582.0k | $2.3k | 0.00 |
| Q4 2025 | $580.8k | $271 | 0.00 |
| Q1 2026 | $469.9k | $284.6k | 0.61 |
| Q2 2026 | $3.6m | $388.5k | 0.11 |
Biggest buyers
| B Group, Inc. | Added | +1.1m |
| AMERIPRISE FINANCIAL INC | New | +928.7k |
| Balyasny Asset Management L.P. | New | +893.9k |
| CITADEL ADVISORS LLC | New | +680.0k |
| VANGUARD CAPITAL MANAGEMENT LLC | Added | +458.0k |
| UBS Group AG | Added | +397.9k |
| AdvisorShares Investments LLC | Added | +238.6k |
| MARSHALL WACE, LLP | New | +194.6k |
| BlackRock, Inc. | Added | +121.5k |
| HRT FINANCIAL LP | New | +100.7k |
Biggest sellers
| XTX Topco Ltd | Reduced | -60.2k |
| Headlands Technologies LLC | Sold out | -39.4k |
| AXQ CAPITAL, LP | Sold out | -33.2k |
| Schonfeld Strategic Advisors LLC | Sold out | -19.9k |
| Virtu Financial LLC | Reduced | -15.2k |
| SUMMIT SECURITIES GROUP LLC | Sold out | -1.1k |
| GROUP ONE TRADING LLC | Sold out | -737 |
| ROYAL BANK OF CANADA | Reduced | -509 |
| WELLS FARGO & COMPANY/MN | Reduced | -350 |
Biggest calls
| SIMPLEX TRADING, LLC | Added | $1.3m317.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $927.6k226.8k shares |
| CITADEL ADVISORS LLC | Added | $917.0k224.2k shares |
| GROUP ONE TRADING LLC | Added | $356.6k87.2k shares |
| JANE STREET GROUP, LLC | Reduced | $76.1k18.6k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $215.5k52.7k shares |
| CITADEL ADVISORS LLC | New | $109.2k26.7k shares |
| SIMPLEX TRADING, LLC | Added | $63.8k15.6k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| B Group, Inc. 13G · passive investor new · filed 2025-08-21 | 12.6% |
Fell to 5% or below in the last year: Anson Funds Management LP (4.9%, 2026-05-15)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 1 | $46.8k | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| B Group, Inc. 9.50% of their portfolio | 4.1m $16.7m | Added +1.1m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.6m $6.6m | Added +458.0k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 928.7k $3.8m | New |
| Balyasny Asset Management L.P. 0.01% of their portfolio | 893.9k $3.7m | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 680.0k $2.8m | New |
| AdvisorShares Investments LLC 0.33% of their portfolio | 659.0k $2.7m | Added +238.6k |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 454.4k $1.9m | Added +57.0k |
| UBS Group AG 0.00% of their portfolio | 423.1k $1.7m | Added +397.9k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 314.7k $1.3m | Added +4.5k |
| BlackRock, Inc. 0.00% of their portfolio | 220.5k $901.7k | Added +121.5k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 194.6k $795.8k | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 182.7k $747.3k | Added +13.1k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 119.0k $486.8k | Added +74.9k |
| Bleakley Financial Group, LLC 0.01% of their portfolio | 117.2k $479.4k | Added +12 |
| STATE STREET CORP 0.00% of their portfolio | 116.1k $474.8k | Added +29.1k |
| HRT FINANCIAL LP 0.00% of their portfolio | 100.7k $411.0k | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 63.0k $257.5k | Added +19.5k |
| Chicago Partners Investment Group LLC 0.00% of their portfolio | 46.4k $190.7k | Added +11.9k |
| Quadrature Capital Ltd 0.00% of their portfolio | 43.6k $178.3k | New |
| One Wealth Management Investment & Advisory Services, LLC 0.19% of their portfolio | 43.3k $177.1k | Unchanged |
| MORGAN STANLEY 0.00% of their portfolio | 40.9k $167.3k | Added +30.9k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 38.6k $157.9k | New |
| Global Retirement Partners, LLC 0.00% of their portfolio | 33.3k $136.2k | First filing |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 26.4k $108.1k | New |
| TRUIST FINANCIAL CORP 0.00% of their portfolio | 20.0k $81.8k | New |
| ExodusPoint Capital Management, LP 0.00% of their portfolio | 19.3k $79.0k | New |
| XTX Topco Ltd 0.00% of their portfolio | 18.5k $75.8k | Reduced -60.2k |
| Virtu Financial LLC 0.00% of their portfolio | 16.6k $68.0k | Reduced -15.2k |
| Persistent Asset Partners Ltd 0.02% of their portfolio | 16.3k $66.8k | New |
| Ethos Financial Group, LLC 0.00% of their portfolio | 15.9k $51.4k | Unchanged |
| Cresset Asset Management, LLC 0.00% of their portfolio | 15.0k $61.4k | New |
| SJBENEN ADVISORY, LLC 0.03% of their portfolio | 15.0k $57.8k | Unchanged |
| Squarepoint Ops LLC 0.00% of their portfolio | 13.2k $53.8k | New |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 12.3k $50.3k | New |
| CITIGROUP INC 0.00% of their portfolio | 6.0k $24.5k | New |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 5.8k $23.6k | New |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 5.1k $20.9k | Added +2.6k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 3.9k $15.9k | Added +3.8k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 2.0k $8.2k | Reduced -350 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 2.0k $8.0k | Reduced -509 |
| BARCLAYS PLC 0.00% of their portfolio | 900 $3.7k | New |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 600 $2.5k | Added +510 |
| Avion Wealth 0.00% of their portfolio | 294 $1.0k | Unchanged |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 67 $274 | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 34 $136 | Unchanged |
| Larson Financial Group LLC 0.00% of their portfolio | 22 $90 | Unchanged |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 1 $4 | Unchanged |