NRXP
NRX Pharmaceuticals, Inc.
$3.87
+0.01 (+0.26%)
At close · Jul 2
Market Cap
$140.21M
Shares
36,228,992
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 34
Total Value: $13,687,073
Total Shares: 6,425,864
Institutional Ownership Trend
8 quarters
Holder Concentration
Across 34 13F filers · Δ vs Dec 31, 2025Top Holder
46.7%
−10.4 pts
Top 5
82.3%
−5.7 pts
Top 10
92.7%
−2.7 pts
HHI
2,639
Highly concentrated−927
Quarterly Activity
vs Dec 31, 2025
New
11
Increased
13
Decreased
2
Sold Out
7
Unchanged
8
Holder count:
+4
Institutional value:
-5.2%
Shares held:
+20.6%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega JANE STREET GROUP, LLC | +111,987 | 180,652 | |
| Small AdvisorShares Investments LLC | +92,463 | 420,467 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +91,246 | 310,112 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | +74,400 | 102,200 | |
| Large COMMONWEALTH EQUITY SERVICES, LLC | +30,800 | 397,431 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | −11,100 | 24,700 | |
| Mega MORGAN STANLEY | −1 | 10,028 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small B Group, Inc. | 3,000,000 | $6,390,000 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 1,160,184 | $2,471,191 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 169,580 | $361,205 | |
| Mid XTX Topco Ltd | 78,733 | $167,701 | |
| Small Headlands Technologies LLC | 39,394 | $83,909 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Small Anson Funds Management LP | 3,043,957 | $8,249,123 | |
| Mega VANGUARD GROUP INC | 729,842 | $1,977,871 | |
| Mid Global Retirement Partners, LLC | 39,300 | $106,503 | |
| Micro One Wealth Management Investment & Advisory Services, LLC | 37,873 | $102,635 | |
| Mega TWO SIGMA INVESTMENTS, LP | 17,436 | $47,251 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Small B Group, Inc. | $6,390,000 | 46.69% | 3,000,000 | Shares | Sole | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $2,471,191 | 18.05% | 1,160,184 | Shares | Defined | 2026-05-15 | ||||
| Small AdvisorShares Investments LLC | $895,594 | 6.54% | 420,467 | Shares | Sole | 2026-04-28 | ||||
| Large COMMONWEALTH EQUITY SERVICES, LLC | $846,528 | 6.18% | 397,431 | Shares | Sole | 2026-04-27 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $660,538 | 4.83% | 310,112 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $361,205 | 2.64% | 169,580 | Shares | Defined | 2026-05-08 | ||||
| Mid Bleakley Financial Group, LLC | $249,644 | 1.82% | 117,204 | Shares | Sole | 2026-05-04 | ||||
| Mega JANE STREET GROUP, LLC | $212,787 | 1.55% | 99,900 | Put | Defined | 2026-05-12 | ||||
| Mega BlackRock, Inc. | $210,857 | 1.54% | 98,995 | Shares | Sole | 2026-05-13 | ||||
| Mega STATE STREET CORP | $185,275 | 1.35% | 86,984 | Shares | Defined | 2026-05-15 | ||||
| Mid XTX Topco Ltd | $167,701 | 1.23% | 78,733 | Shares | Defined | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $148,461 | 1.08% | 69,700 | Call | Other | 2026-05-15 | ||||
| Mega JANE STREET GROUP, LLC | $94,043 | 0.69% | 44,152 | Shares | Defined | 2026-05-12 | ||||
| Mega NORTHERN TRUST CORP Bank | $92,588 | 0.68% | 43,469 | Shares | Defined | 2026-05-14 | ||||
| Small Headlands Technologies LLC | $83,909 | 0.61% | 39,394 | Shares | Sole | 2026-05-13 | ||||
| Mega JANE STREET GROUP, LLC | $77,958 | 0.57% | 36,600 | Call | Defined | 2026-05-12 | ||||
| Mid Chicago Partners Investment Group LLC | $73,440 | 0.54% | 34,479 | Shares | Sole | 2026-05-04 | ||||
| Small AXQ CAPITAL, LP | $70,739 | 0.52% | 33,211 | Shares | Sole | 2026-05-13 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $69,225 | 0.51% | 32,500 | Put | Other | 2026-05-15 | ||||
| Mid Virtu Financial LLC | $67,702 | 0.49% | 31,785 | Shares | Defined | 2026-05-14 | ||||
| Mega UBS Group AG | $53,732 | 0.39% | 25,227 | Shares | Defined | 2026-05-05 | ||||
| Mega CITADEL ADVISORS LLC | $52,611 | 0.38% | 24,700 | Call | Defined | 2026-05-15 | ||||
| Large Schonfeld Strategic Advisors LLC | $42,335 | 0.31% | 19,876 | Shares | Sole | 2026-05-15 | ||||
| Small Ethos Financial Group, LLC | $33,867 | 0.25% | 15,900 | Shares | Sole | 2026-05-05 | ||||
| Micro SJBENEN ADVISORY, LLC | $31,950 | 0.23% | 15,000 | Shares | Sole | 2026-04-13 | ||||
| Mega MORGAN STANLEY | $21,359 | 0.16% | 10,028 | Shares | Defined | 2026-05-15 | ||||
| Mega ROYAL BANK OF CANADA Bank | $5,344 | 0.04% | 2,509 | Shares | Defined | 2026-05-15 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $5,325 | 0.04% | 2,500 | Shares | Defined | 2026-04-28 | ||||
| Mega WELLS FARGO & COMPANY/MN | $5,005 | 0.04% | 2,350 | Shares | Defined | 2026-05-11 | ||||
| Small SUMMIT SECURITIES GROUP LLC Broker-Dealer | $2,417 | 0.02% | 1,135 | Shares | Sole | 2026-04-30 | ||||
| Mid GROUP ONE TRADING LLC | $1,569 | 0.01% | 737 | Shares | Sole | 2026-05-13 | ||||
| Mid Chicago Partners Investment Group LLC | $1,065 | 0.01% | 500 | Call | Sole | 2026-05-04 | ||||
| Micro Avion Wealth | $626 | 0.00% | 294 | Shares | Sole | 2026-05-01 | ||||
| Large OSAIC HOLDINGS, INC. | $191 | 0.00% | 90 | Shares | Defined | 2026-05-15 | ||||
| Mid Tower Research Capital LLC (TRC) | $172 | 0.00% | 81 | Shares | Other | 2026-05-15 | ||||
| Mega JPMORGAN CHASE & CO | $72 | 0.00% | 34 | Shares | Defined | 2026-05-13 | ||||
| Mid Larson Financial Group LLC | $46 | 0.00% | 22 | Shares | Sole | 2026-05-15 | ||||
| Large Steward Partners Investment Advisory, LLC | $2 | 0.00% | 1 | Shares | Sole | 2026-05-08 | ||||
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