Phio Pharmaceuticals Corp.
PHIO- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001533040
In the last 90 days, Phio Pharmaceuticals Corp. insiders filed 5 open-market purchases and 0 sales; 24 institutions reported holding it in 13F filings for Q2 2026, worth $662.6K in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Phio Pharmaceuticals Corp. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 24
- +8 vs. Q4 2025
- Shares held
- 668.5K
- +392.3K (+142.0%) vs. Q4 2025
- Total value
- $815.0K
- +$524.6K (+180.7%) vs. Q4 2025
- New holders
- 14
- 5 more added
- Sold out
- 6
- 0 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PHIO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 24 | $662.6K |
| Q1 2026 | 24 | $815.0K |
| Q4 2025 | 17 | $382.3K |
| Q3 2025 | 11 | $467.4K |
| Q2 2025 | 11 | $387.4K |
| Q1 2025 | 11 | $130.8K |
| Q4 2024 | 11 | $277.4K |
| Q3 2024 | 6 | $98.3K |
| Q2 2024 | 12 | $117.0K |
| Q1 2024 | 10 | $106.1K |
| Q4 2023 | 14 | $388.8K |
| Q3 2023 | 14 | $445.4K |
| Q2 2023 | 13 | $798.3K |
| Q1 2023 | 8 | $219.7K |
| Q4 2022 | 12 | $213.2K |
| Q3 2022 | 15 | $415.0K |
| Q2 2022 | 13 | $551.0K |
| Q1 2022 | 15 | $626.0K |
| Q4 2021 | 18 | $991.0K |
| Q3 2021 | 16 | $1.82M |
| Q2 2021 | 17 | $1.58M |
| Q1 2021 | 16 | $1.34M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Phio Pharmaceuticals Corp.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Geode Capital Management, LLC | 147,254 | $179.6K | 0.00% | +54,616+59.0% | Added |
| Jane Street Group, LLC | 119,189 | $145.4K | 0.00% | +119,189 | New |
| Vanguard Capital Management LLC | 79,853 | $97.4K | 0.00% | +79,853 | New |
| Cetera Investment Advisers | 45,000 | $54.9K | 0.00% | +2,500+5.9% | Added |
| Vanguard Fiduciary Trust Co | 38,169 | $46.6K | 0.00% | +38,169 | New |
| HRT Financial LP | 34,732 | $42.0K | 0.00% | +34,732 | New |
| Two Sigma Investments, LP | 32,495 | $39.6K | 0.00% | +18,001+124.2% | Added |
| Scientech Research LLC | 30,032 | $36.6K | 0.03% | +30,032 | New |
| UBS Group AG | 26,987 | $32.9K | 0.00% | +18,393+214.0% | Added |
| XTX Topco Ltd | 24,868 | $30.3K | 0.00% | +24,868 | New |
| Northern Trust Corp | 23,758 | $29.0K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 19,864 | $24.0K | 0.00% | +19,864 | New |
| Two Sigma Securities, LLC | 15,224 | $18.6K | 0.00% | +15,224 | New |
| Captrust Financial Advisors | 10,000 | $12.2K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 7,620 | $9.30K | 0.00% | +7,620 | New |
| Morgan Stanley | 6,000 | $7.32K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 2,000 | $2.44K | 0.00% | +2,000 | New |
| Spire Wealth Management | 2,000 | $2.44K | 0.00% | +2,000 | New |
| SBI Securities Co., Ltd. | 1,224 | $1.49K | 0.00% | +89+7.8% | Added |
| NBC Securities, Inc. | 1,074 | $1.31K | 0.00% | +1,074 | New |
| Citigroup Inc | 1,025 | $1.25K | 0.00% | +1,025 | New |
| Assetmark, Inc | 110 | $134 | 0.00% | 00.0% | Unchanged |
| Activest Wealth Management | 9 | $11 | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 3 | $4 | 0.00% | +3 | New |
| DRW Securities, LLC | 0 | $0 | 0.00% | −22,636−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −20,091−100.0% | Sold out |
| StoneX Group Inc. | 0 | $0 | 0.00% | −11,828−100.0% | Sold out |
| Robertson Stephens Wealth Management, LLC | 0 | $0 | 0.00% | −10,800−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −10,214−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −1,413−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |