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Institutional Ownership · SEC Form 13F

Who owns NRx Pharmaceuticals, Inc. (NRXP)


Which tracked institutional funds hold NRXP, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NRXP company fundamentals →

Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-15). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

34
Institutional holders
6M
Shares held (tracked funds)
19.5%
Of shares outstanding

How the tape is positioned

2 tracked funds added or opened NRXP while 2 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.

A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.

Conviction spread

NRXP’s largest tracked holder by dollar value, Anson Funds Management LP, sizes it at 1.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in NRXP divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.

Institutional & insider positioning

Between 2025-Q4 and 2026-Q1, across 33 tracked filers holding NRXP, 24 increased or opened the position and 9 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.

This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.

New buyers & exits

Funds opening or closing a position in NRXP between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.

New buyers 2

  • B Group, Inc.$6M
  • VANGUARD CAPITAL MANAGEMENT LLC$2M

Full exits 2

  • Anson Funds Management LP$8M
  • VANGUARD GROUP INC$2M

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).

FundSharesReported value% of valueQuarter
B Group, Inc.3,000,000$6M25.3%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new1,160,184$2M9.8%2026-Q1
AdvisorShares Investments LLC added420,467$896K3.6%2026-Q1
COMMONWEALTH EQUITY SERVICES, LLC added397,431$847K3.4%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added310,112$661K2.6%2026-Q1
VANGUARD FIDUCIARY TRUST CO new169,580$361K1.4%2026-Q1
Bleakley Financial Group, LLC117,204$250K1.0%2026-Q1
BlackRock, Inc. added98,995$211K0.8%2026-Q1
STATE STREET CORP86,984$185K0.7%2026-Q1
XTX Topco Ltd added78,733$168K0.7%2026-Q1
Chicago Partners Investment Group LLC added34,479$102K0.4%2026-Q1
JANE STREET GROUP, LLC added44,152$94K0.4%2026-Q1
NORTHERN TRUST CORP added43,469$93K0.4%2026-Q1
Headlands Technologies LLC new39,394$84K0.3%2026-Q1
AXQ CAPITAL, LP new33,211$71K0.3%2026-Q1
Virtu Financial LLC added31,785$68K0.3%2026-Q1
UBS Group AG added25,227$54K0.2%2026-Q1
Schonfeld Strategic Advisors LLC trimmed19,876$42K0.2%2026-Q1
Ethos Financial Group, LLC added15,900$34K0.1%2026-Q1
SJBENEN ADVISORY, LLC15,000$32K0.1%2026-Q1
MORGAN STANLEY trimmed10,028$21K0.1%2026-Q1
SBI Securities Co., Ltd.2,500$5K0.0%2026-Q1
WELLS FARGO & COMPANY/MN added2,350$5K0.0%2026-Q1
ROYAL BANK OF CANADA added2,509$5K0.0%2026-Q1
SUMMIT SECURITIES GROUP LLC new1,135$2K0.0%2026-Q1
GROUP ONE TRADING LLC trimmed737$2K0.0%2026-Q1
WOLVERINE ASSET MANAGEMENT LLC added23,593$3470.0%2026-Q1
OSAIC HOLDINGS, INC.90$1910.0%2026-Q1
Tower Research Capital LLC (TRC) added81$1730.0%2026-Q1
JPMORGAN CHASE & CO34$710.0%2026-Q1
Larson Financial Group LLC22$470.0%2026-Q1
Steward Partners Investment Advisory, LLC1$20.0%2026-Q1
Avion Wealth new2940.0%2026-Q1
Anson Funds Management LP added3,043,957$8M32.7%2025-Q4 stale
VANGUARD GROUP INC added729,842$2M7.8%2025-Q4 stale
MARSHALL WACE, LLP added189,136$624K2.5%2025-Q3 stale
RENAISSANCE TECHNOLOGIES LLC trimmed128,175$423K1.7%2025-Q3 stale
CITADEL ADVISORS LLC added92,361$301K1.2%2025-Q2 stale
Squarepoint Ops LLC added42,202$138K0.5%2025-Q2 stale
Global Retirement Partners, LLC new39,300$107K0.4%2025-Q4 stale
One Wealth Management Investment & Advisory Services, LLC added37,873$103K0.4%2025-Q4 stale
TWO SIGMA INVESTMENTS, LP trimmed17,436$47K0.2%2025-Q4 stale
Point72 Asset Management, L.P. new15,979$43K0.2%2025-Q4 stale
TOWNSQUARE CAPITAL LLC15,041$31K0.1%2025-Q1 stale
BANK OF AMERICA CORP /DE/ trimmed3,239$9K0.0%2025-Q4 stale
RAYMOND JAMES FINANCIAL INC new2,571$8K0.0%2025-Q2 stale
TRUIST FINANCIAL CORP38,965$3K0.0%2025-Q2 stale
SIMPLEX TRADING, LLC added690$2K0.0%2025-Q2 stale
SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed11,412$6690.0%2025-Q4 stale
Carolina Wealth Advisors, LLC50$1650.0%2025-Q3 stale
FMR LLC trimmed37$760.0%2025-Q1 stale
CONCOURSE FINANCIAL GROUP SECURITIES, INC.00.0%2025-Q2 stale

Ownership over time

Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.

HoldersTotal shares

Reading this table

Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.

About 13F filings

A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.

Learn how to read institutional ownership