Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in PHIO held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | JANE STREET GROUP, LLC | 118K | $121K | -1.2% | 1.014% | 0.00% |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | 115K | $117K | -22.2% | 0.986% | 0.00% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 94K | $97K | +18.0% | 0.811% | 0.00% |
| 4 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 50K | $51K | β | 0.430% | 0.00% |
| 5 | Cetera Investment Advisers | 48K | $49K | +5.6% | 0.409% | 0.00% |
| 6 | CITADEL ADVISORS LLC | 47K | $48K | β | 0.406% | 0.00% |
| 7 | VANGUARD FIDUCIARY TRUST CO | 38K | $39K | 0.0% | 0.329% | 0.00% |
| 8 | NORTHERN TRUST CORP | 28K | $28K | +16.9% | 0.239% | 0.00% |
| 9 | TWO SIGMA INVESTMENTS, LP | 22K | $22K | -33.8% | 0.185% | 0.00% |
| 10 | XTX Topco Ltd | 18K | $19K | -25.7% | 0.159% | 0.00% |
| 11 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 12K | $12K | β | 0.103% | 0.00% |
| 12 | CITIGROUP INC | 12K | $12K | +1032.2% | 0.100% | 0.00% |
| 13 | CAPTRUST FINANCIAL ADVISORS | 10K | $10K | 0.0% | 0.086% | 0.00% |
| 14 | Tower Research Capital LLC (TRC) | 6K | $6K | -18.6% | 0.053% | 0.00% |
| 15 | MORGAN STANLEY | 6K | $6K | 0.0% | 0.052% | 0.00% |
| 16 | UBS Group AG | 5K | $6K | -80.0% | 0.046% | 0.00% |
| 17 | OSAIC HOLDINGS, INC. | 2K | $2K | 0.0% | 0.017% | 0.00% |
| 18 | Spire Wealth Management | 2K | $2K | -0.5% | 0.017% | 0.00% |
| 19 | SBI Securities Co., Ltd. | 1K | $1K | +1.9% | 0.011% | 0.00% |
| 20 | BARCLAYS PLC | 231 | $237 | β | 0.002% | 0.00% |
| 21 | ASSETMARK, INC | 110 | $113 | 0.0% | 0.001% | 0.00% |
| 22 | HRT FINANCIAL LP | 13K | $13 | β | 0.113% | 0.00% |
| 23 | Activest Wealth Management | 9 | $9 | 0.0% | 0.000% | 0.00% |
| 24 | Caitong International Asset Management Co., Ltd | 6 | $6 | +100.0% | 0.000% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in PHIO β a direct measure of their conviction.
Filings activity in PHIO during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 24 | +0.0% | 5.57% | 0.18 pp | $1M | 13% |
| Q1 2026 | 24 | +50% | 5.75% | +2.81 pp | $1M | +116% |
| Q4 2025 | 16 | +45% | 2.94% | +1.32 pp | $0M | 26% |
| Q3 2025 | 11 | 8.3% | 1.62% | +0.20 pp | $0M | +32% |
| Q2 2025 | 12 | +0.0% | 1.42% | +0.55 pp | $0M | +170% |
| Q1 2025 | 12 | +0.0% | 0.87% | +0.26 pp | $0M | +2.8% |
| Q4 2024 | 12 | +71% | 0.61% | +0.36 pp | $0M | +29% |
| Q3 2024 | 7 | β | 0.25% | β | $0M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying PHIO stock.
Based on Q2 2026 13F filings, institutional ownership of Phio Pharmaceuticals Corp. stands at 5.6%, held across 24 reporting institutions.
JANE STREET GROUP, LLC is the largest reported institutional holder of PHIO, with approximately 117,755 shares worth $0.00B as of Q2 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of PHIO, including JANE STREET GROUP, LLC, CITADEL ADVISORS LLC, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for PHIO is 61 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
4 institutions opened new positions in PHIO during Q2 2026, while 4 fully exited. 2 added to existing positions and 17 trimmed.
PHIO institutional ownership fell by 0.18 percentage points quarter-over-quarter, with a net change of +0 holders.
The top 10 institutions account for 91.0% of all reported 13F value in PHIO, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Phio Pharmaceuticals Corp. (PHIO) Institutional Ownership