Phio Pharmaceuticals
PHIO · NASDAQ
$0.8921+$0.0232 (+2.67%)TodayMarket closed ·
Prev close $0.8689
Who owns PHIO
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 12.1% of PHIO’s shares.
- Orca Capital GmbH4.6%
- Bitterman (Robert J)2.7%
- Jane Street Capital, L.L.C.1.0%
- Geode Capital Management, L.L.C.1.0%
- Next 6 largest institutions2.8%
- All other shareholders87.9%
| Holder | Shares | % of shares |
|---|---|---|
| Orca Capital GmbH | 538.71K | 4.64% |
| Bitterman (Robert J) | 311.42K | 2.68% |
| Jane Street Capital, L.L.C. | 117.75K | 1.01% |
| Geode Capital Management, L.L.C. | 114.57K | 0.99% |
| Vanguard Capital Management, LLC | 94.26K | 0.81% |
| Nomura Investment Management Business Trust | 50.00K | 0.43% |
| Cetera Investment Advisers LLC | 47.50K | 0.41% |
| Citadel Advisors LLC | 47.15K | 0.41% |
| Carson (Lisa Cabott) | 47.00K | 0.40% |
| Vanguard Fiduciary Trust Co | 38.17K | 0.33% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Extended Market Index Fund | 94.26K | 0.81% |
| Fidelity Extended Market Index Fund | 61.36K | 0.53% |
| Nomura Healthcare Fund | 50.00K | 0.43% |
| Fidelity Series Total Market Index Fund | 14.66K | 0.13% |
| Fidelity Total Market Index Fund | 13.29K | 0.11% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $48.70K (5 trades) of PHIO on the open market, with no sales.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Plott Ronald Todd | Award | 17.00K | — |
| Carson Lisa Cabott | Award | 108.00K | — |
| Bitterman Robert J | Award | 400.00K | — |
| BRADFORD PATRICIA A | Buy | 6.50K | $6.58K |
| Bitterman Robert J | Buy | 2.00K | $2.06K |
| BRADFORD PATRICIA A | Buy | 12.00K | $12.36K |
| Carson Lisa Cabott | Tax withholding | 12.89K | $13.27K |
| Bitterman Robert J | Tax withholding | 68.55K | $70.61K |
| Plott Ronald Todd | Buy | 15.00K | $17.10K |
| Bitterman Robert J | Buy | 10.00K | $10.60K |
Short interest
Settled Sep 30, 2026
- Shares short
- 89.45K
- Days to cover
- 1.00
- % of shares outstanding
- 0.77%
- Average daily volume
- 114.59K
- Change since last report
- −40.3%
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