Immuron Limited
Immuron Limited (IMRN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · IMRN · as of Sep 30, 2025
Ownership Breakdown
7
Institutional Holders
▲ 2 vs Q2
$123,763
Total Inst. Value
▲ $83,668 vs Q2
6.45M
Shares Outstanding
freeFloat 105.03%
64,910
13F Shares Held
▲ 41,866 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
IMRN largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 7 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
CITADEL ADVISORS LLC pharmaceutical preparations | 19.6K | 33.40% | 33.40% | $37.36M | Nov 14, 2025 | NEW |
MORGAN STANLEY pharmaceutical preparations | 18.3K | 31.16% | 31.16% | $34.68M | May 27, 2026 | ▲ 17.6K |
XTX TOPCO LTD pharmaceutical preparations | 18.0K | 30.67% | 30.67% | $34.32M | Nov 14, 2025 | NEW |
RHUMBLINE ADVISERS pharmaceutical preparations | 5.9K | 10.14% | 10.14% | $11.34M | Nov 6, 2025 | — held |
UBS GROUP AG pharmaceutical preparations | 1.9K | 3.19% | 3.19% | $3.54M | Nov 13, 2025 | ▼ 14.4K |
BNP PARIBAS ARBITRAGE, SNC pharmaceutical preparations | 1.3K | 2.24% | 2.24% | $2.49M | Nov 13, 2025 | ▲ 1.2K |
SBI SECURITIES CO., LTD. pharmaceutical preparations | 10 | 0.02% | 0.02% | $19,000 | Nov 5, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
2
Increased
+18.8K shares2
New Positions
first time holders1
Decreased
−14.4K shares0
Sold Out
fully exitedNet shares change (top 50)
+4.3K
+18.8K / −14.4K
Net new holders
+3
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
IMRN insider trading · insider activity
Source: SEC Form 4
Recent Insider Transactions
Showing 10 most recent · Common Stock only
No recent insider transactions reported.
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Immuron Limited (IMRN) is primarily owned by institutional investors, who hold approximately 1.0% of total shares outstanding. Company insiders own approximately 0.00%, while retail and public investors account for the remaining 104.02%.
The largest institutional shareholder of Immuron Limited is CITADEL ADVISORS LLC, holding approximately 19,562 shares — equal to 33.40% of outstanding shares — as of September 30, 2025.
A total of 7 institutional investors currently hold IMRN stock, with a combined institutional value of approximately $123,763 as of the most recent 13F filing period.
Frequently asked questions
IMRN ownershipImmuron Limited (IMRN) is primarily owned by institutional investors, who hold approximately 1.0% of shares. The largest shareholder is CITADEL ADVISORS LLC with a 33.40% stake. Company insiders hold 0.00%. Data sourced from SEC Form 13F as of September 30, 2025.