PHIO
Phio Pharmaceuticals Corp.Company with tickers: PHIO
CIK
1533040
CUSIP
71880W501
Shares Outstanding
11,617,250
Website
https://www.phiopharma.com
Investor Relations
https://phiopharma.com/investors/
13F Activity (30d)
2 filings
1 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 24
Total Value: $815,548
Total Shares: 668,490
Institutional Ownership Trend
14 quarters
Holder Concentration
Across 24 13F filers · Δ vs Dec 31, 2025Top Holder
22.0%
−3.4 pts
Top 5
64.2%
−9.7 pts
Top 10
86.6%
−6.0 pts
HHI
1,156
Broadly held−380
Quarterly Activity
vs Dec 31, 2025
New
14
Increased
5
Decreased
0
Sold Out
8
Unchanged
5
Holder count:
+6
Institutional value:
-50.2%
Shares held:
-57.1%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | +54,616 | 147,254 | |
| Mega UBS Group AG | +18,393 | 26,987 | |
| Mega TWO SIGMA INVESTMENTS, LP | +18,001 | 32,495 | |
| Large Cetera Investment Advisers | +2,500 | 45,000 | |
| Mid SBI Securities Co., Ltd. | +89 | 1,224 |
Top Sellers
vs Dec 31, 2025No qualifying movers this quarter.
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega JANE STREET GROUP, LLC | 119,189 | $145,410 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 79,853 | $97,420 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 38,169 | $46,566 | |
| Large HRT FINANCIAL LP | 34,732 | $42,373 | |
| Small Scientech Research LLC | 30,032 | $36,639 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| — CVI Investments, Inc. | 1,194,719 | $1,254,454 | |
| Mega VANGUARD GROUP INC | 87,628 | $92,008 | |
| Mid DRW Securities, LLC | 22,636 | $23,767 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | 20,091 | $21,095 | |
| Small StoneX Group Inc. | 11,828 | $12,419 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | $179,649 | 22.03% | 147,254 | Shares | Defined | 2026-05-15 | ||||
| Mega JANE STREET GROUP, LLC | $145,410 | 17.83% | 119,189 | Shares | Defined | 2026-05-12 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $97,420 | 11.95% | 79,853 | Shares | Defined | 2026-05-15 | ||||
| Large Cetera Investment Advisers | $54,900 | 6.73% | 45,000 | Shares | Sole | 2026-05-13 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $46,566 | 5.71% | 38,169 | Shares | Defined | 2026-05-08 | ||||
| Large HRT FINANCIAL LP | $42,373 | 5.20% | 34,732 | Shares | Defined | 2026-05-14 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $39,643 | 4.86% | 32,495 | Shares | Sole | 2026-05-15 | ||||
| Small Scientech Research LLC | $36,639 | 4.49% | 30,032 | Shares | Sole | 2026-05-15 | ||||
| Mega UBS Group AG | $32,923 | 4.04% | 26,987 | Shares | Defined | 2026-05-05 | ||||
| Mid XTX Topco Ltd | $30,338 | 3.72% | 24,868 | Shares | Defined | 2026-05-15 | ||||
| Mega NORTHERN TRUST CORP Bank | $28,984 | 3.55% | 23,758 | Shares | Defined | 2026-05-14 | ||||
| Mid GSA CAPITAL PARTNERS LLP | $24,234 | 2.97% | 19,864 | Shares | Sole | 2026-05-08 | ||||
| Small TWO SIGMA SECURITIES, LLC Broker-Dealer | $18,573 | 2.28% | 15,224 | Shares | Sole | 2026-05-15 | ||||
| Large CAPTRUST FINANCIAL ADVISORS | $12,200 | 1.50% | 10,000 | Shares | Sole | 2026-05-15 | ||||
| Mid Tower Research Capital LLC (TRC) | $9,296 | 1.14% | 7,620 | Shares | Defined | 2026-05-15 | ||||
| Mega MORGAN STANLEY | $7,320 | 0.90% | 6,000 | Shares | Defined | 2026-05-15 | ||||
| Mid Spire Wealth Management | $2,440 | 0.30% | 2,000 | Shares | Sole | 2026-04-22 | ||||
| Large OSAIC HOLDINGS, INC. | $2,440 | 0.30% | 2,000 | Shares | Defined | 2026-05-15 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $1,493 | 0.18% | 1,224 | Shares | Defined | 2026-04-28 | ||||
| Small NBC SECURITIES, INC. Broker-Dealer | $1,310 | 0.16% | 1,074 | Shares | Sole | 2026-04-14 | ||||
| Mega CITIGROUP INC | $1,250 | 0.15% | 1,025 | Shares | Defined | 2026-05-11 | ||||
| Large ASSETMARK, INC | $134 | 0.02% | 110 | Shares | Sole | 2026-05-06 | ||||
| Small Activest Wealth Management | $10 | 0.00% | 9 | Shares | Sole | 2026-04-15 | ||||
| Small Caitong International Asset Management Co., Ltd | $3 | 0.00% | 3 | Shares | Sole | 2026-05-11 | ||||
| No holders match your search. | ||||||||||