Psyence Biomedical Ltd. (PBMWW) shareholders
Close on Oct 30, 2026Market cap –P/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Psyence Labs Ltd. | 2,643,659 | 49.75% | 13D (active) amendment | Oct 1, 2026 |
| Hudson Bay Capital Management LP | 380,000 | 9.98% | 13G (passive) | Dec 31, 2024 |
| AdvisorShares Trust | 258,538 | 6.78% | 13G (passive) | Sep 30, 2026 |
| Harraden Circle Investors GP, LLC Joint filing with Harraden Circle Investments, LLC (5.32%), Harraden Circle Investors GP, LP (5.32%) and 1 more | 182,323 | 5.32% | 13G (passive) amendment | Dec 31, 2024 |
| White Lion Capital, LLC | 100,000 | 8.93% | 13G (passive) | Dec 4, 2024 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of PBMWW | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Harraden Circle Investments, LLC | 1,149,000 | – | $27.92K | −1,000 | 0.00% |
| Polar Asset Management Partners Inc. | 733,000 | – | $16.64K | – | 0.00% |
| MMCAP International Inc. SPC | 600,000 | – | $14.58K | – | 0.00% |
| Toronto Dominion Bank | 503,012 | – | $12.07K | −300 | 0.00% |
| Calamos Advisors LLC | 500,000 | – | $10.50K | – | 0.00% |
| Saba Capital Management, L.P. | 297,847 | – | $7.24K | – | 0.00% |
| Clear Street Group Inc. | 257,202 | – | $6.25K | −7 | 0.00% |
| Goldman Sachs Group Inc | 200,117 | – | $4.86K | – | 0.00% |
| LMR Partners LLP | 200,000 | – | $4.86K | – | 0.00% |
| D. E. Shaw & Co., Inc. | 175,352 | – | $3.68K | – | 0.00% |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 150,000 | – | $3.65K | – | 0.00% |
| Wolverine Asset Management LLC | 147,101 | – | $3.58K | – | 0.00% |
| Aristeia Capital LLC | 115,319 | – | $2.62K | −100,000 | 0.00% |
| Mint Tower Capital Management B.V. | 50,000 | – | $1.00K | – | 0.00% |
| LPL Financial LLC | 49,095 | – | $1.19K | – | 0.00% |
| Parallel Advisors, LLC | 27,500 | – | $668 | – | 0.00% |
| Susquehanna International Group, Llp | 10,119 | – | $212 | New | 0.00% |
| Ancora Advisors, LLC | 5,000 | – | $121 | – | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|
| Q2 2026 | 18 | 5M | 1 / 0 | 4 / 2 | 0M | 0M |
| Q1 2026 | 19 | 5M | 1 / 1 | 1 / 3 | 0M | 0M |
| Q4 2025 | 21 | 5M | 0 / 21 | 0 / 2 | 5M | 0M |
| Q3 2025 | 23 | 1M | 4 / 1 | 2 / 2 | 0M | 0M |
| Q2 2025 | 23 | 1M | 3 / 1 | 0 / 3 | 0M | 0M |
| Q1 2025 | 23 | 1M | 3 / 20 | 0 / 2 | 1M | 0M |
| Q4 2024 | 22 | 0M | 3 / 2 | 3 / 4 | 0M | 0M |
| Q3 2024 | 23 | 0M | 0 / 23 | 0 / 5 | 0M | 0M |
| Q2 2024 | 28 | 0M | 1 / 2 | 1 / 3 | 0M | 0M |
| Q1 2024 | 30 | 0M | 30 / 0 | 0 / 0 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
2 funds held PBMWW in Q3 2025, 0% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of PBMWW | Value | % of fund | As of |
|---|---|---|---|---|---|
| Calamos Market Neutral Income Fund | 500,000 | – | $17.50K | 0.00% | Jul 31, 2026 |
Short interest
Shares sold short and not yet bought back, as of Oct 15, 2026 (FINRA, reported twice a month)
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Psyence Biomedical's stock actually held short. Settlement fails (shares not delivered on time) peaked at 32,401 shares on Aug 10, 2026 over the last 90 days.