Phio Pharmaceuticals (PHIO)
Phio Pharmaceuticals on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as pharmaceutical preparations.
136K
Short interest
settlement 2026-10-15
1.5
Days to cover
+0.5 days vs prior
21.7%
Short share of volume
2026-11-03
1,038
Fails to deliver
settlement 2026-10-14
Thu 12 Nov
Next earnings
estimated date
$59K
Insider flow, 90 days
7 buys, 0 sells
As of 2026-11-03.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in PHIO is 136,375 shares, down 13,515 shares over the last month. Over the last 48 readings it ranged from 39,760 shares (13 December 2024) to 2,335,588 shares (13 February 2026). The latest reading sits at the bottom of that range. At the reported average volume of 92K shares a day that is 1.5 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/phio" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 136,375 | +52.5% | 91,870 | 1.48 |
| 2026-09-30 | 89,454 | -40.3% | 114,595 | 1.00 |
| 2026-09-15 | 149,890 | -32.3% | 155,806 | 1.00 |
| 2026-08-31 | 221,546 | -30.7% | 222,994 | 1.00 |
| 2026-08-14 | 319,747 | +11.3% | 121,439 | 2.63 |
| 2026-07-31 | 287,349 | +61.8% | 305,619 | 1.00 |
| 2026-07-15 | 177,615 | -18.8% | 2,616,899 | 1.00 |
| 2026-06-30 | 218,725 | -27.7% | 241,492 | 1.00 |
| 2026-06-15 | 302,481 | -3.6% | 153,874 | 1.97 |
| 2026-05-29 | 313,798 | -5.4% | 106,065 | 2.96 |
| 2026-05-15 | 331,567 | -29.4% | 177,265 | 1.87 |
| 2026-04-30 | 469,570 | -9.8% | 111,246 | 4.22 |
| 2026-04-15 | 520,525 | -9.0% | 174,356 | 2.99 |
| 2026-03-31 | 571,887 | -2.4% | 336,263 | 1.70 |
| 2026-03-13 | 585,794 | +10.9% | 471,199 | 1.24 |
| 2026-02-27 | 528,245 | -77.4% | 1,123,105 | 1.00 |
| 2026-02-13 | 2,335,588 | +259.3% | 20,308,761 | 1.00 |
| 2026-01-30 | 650,035 | +36.8% | 331,338 | 1.96 |
| 2026-01-15 | 475,269 | +55.8% | 388,480 | 1.22 |
| 2025-12-31 | 305,070 | +50.7% | 350,979 | 1.00 |
| 2025-12-15 | 202,403 | -18.8% | 375,112 | 1.00 |
| 2025-11-28 | 249,310 | -28.4% | 413,212 | 1.00 |
| 2025-11-14 | 348,456 | +50.0% | 17,160,244 | 1.00 |
| 2025-10-31 | 232,245 | -14.2% | 52,909 | 4.39 |
| 2025-10-15 | 270,688 | -1.6% | 88,252 | 3.07 |
| 2025-09-30 | 275,096 | +4.9% | 177,078 | 1.55 |
| 2025-09-15 | 262,234 | -9.7% | 176,750 | 1.48 |
| 2025-08-29 | 290,432 | -32.3% | 104,573 | 2.78 |
| 2025-08-15 | 429,003 | -40.0% | 161,036 | 2.66 |
| 2025-07-31 | 715,319 | +117.5% | 4,344,934 | 1.00 |
| 2025-07-15 | 328,941 | -3.3% | 130,841 | 2.51 |
| 2025-06-30 | 340,142 | +41.2% | 234,284 | 1.45 |
| 2025-06-13 | 240,898 | +6.2% | 1,173,182 | 1.00 |
| 2025-05-30 | 226,845 | -45.1% | 212,449 | 1.07 |
| 2025-05-15 | 412,955 | +50.3% | 1,409,227 | 1.00 |
| 2025-04-30 | 274,687 | -80.9% | 831,615 | 1.00 |
| 2025-04-15 | 1,437,183 | +1725.9% | 15,190,487 | 1.00 |
| 2025-03-31 | 78,709 | +14.2% | 64,759 | 1.22 |
| 2025-03-14 | 68,910 | +3.3% | 143,833 | 1.00 |
| 2025-02-28 | 66,736 | +46.8% | 161,946 | 1.00 |
| 2025-02-14 | 45,460 | -54.4% | 332,743 | 1.00 |
| 2025-01-31 | 99,592 | -82.4% | 6,534,690 | 1.00 |
| 2025-01-15 | 566,355 | +749.1% | 32,998,201 | 1.00 |
| 2024-12-31 | 66,698 | +67.8% | 1,709,239 | 1.00 |
| 2024-12-13 | 39,760 | -17.4% | 33,480 | 1.19 |
| 2024-11-29 | 48,124 | +0.3% | 55,587 | 1.00 |
| 2024-11-15 | 47,983 | -6.8% | 43,830 | 1.09 |
| 2024-10-31 | 51,491 | +141.3% | 131,994 | 1.00 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 3 November 2026, the short share of PHIO volume is 21.7%, down 54.3 points over the last five sessions. Over the last 30 readings it ranged from 10.3% (2 November 2026) to 80.9% (30 October 2026). The latest reading is 23.8 points below the 30-session average of 45.4%, on 23K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-03 | 5K | 23K | 21.7% | 0 |
| 2026-11-02 | 2K | 18K | 10.3% | 0 |
| 2026-10-30 | 26K | 33K | 80.9% | 0 |
| 2026-10-29 | 15K | 20K | 72.9% | 0 |
| 2026-10-28 | 1K | 7K | 20.6% | 0 |
| 2026-10-27 | 32K | 43K | 75.9% | 0 |
| 2026-10-26 | 13K | 23K | 55.3% | 0 |
| 2026-10-23 | 10K | 26K | 39.1% | 0 |
| 2026-10-22 | 15K | 35K | 43.9% | 500 |
| 2026-10-21 | 21K | 69K | 29.9% | 0 |
| 2026-10-20 | 28K | 39K | 71.1% | 400 |
| 2026-10-19 | 29K | 50K | 57.5% | 1 |
| 2026-10-16 | 37K | 68K | 55.0% | 0 |
| 2026-10-15 | 41K | 66K | 62.6% | 7,000 |
| 2026-10-14 | 56K | 77K | 73.1% | 4,038 |
| 2026-10-13 | 27K | 36K | 75.4% | 0 |
| 2026-10-12 | 11K | 24K | 45.2% | 0 |
| 2026-10-09 | 8K | 34K | 24.6% | 0 |
| 2026-10-08 | 9K | 39K | 22.5% | 0 |
| 2026-10-07 | 23K | 51K | 45.5% | 0 |
| 2026-10-06 | 39K | 61K | 62.9% | 0 |
| 2026-10-05 | 77K | 104K | 74.5% | 0 |
| 2026-10-02 | 5K | 22K | 24.4% | 0 |
| 2026-10-01 | 6K | 38K | 14.6% | 0 |
| 2026-09-30 | 30K | 56K | 53.6% | 0 |
| 2026-09-29 | 23K | 53K | 44.2% | 0 |
| 2026-09-28 | 13K | 53K | 24.9% | 0 |
| 2026-09-25 | 49K | 130K | 37.4% | 0 |
| 2026-09-24 | 8K | 32K | 26.1% | 0 |
| 2026-09-23 | 8K | 49K | 17.3% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 14 October 2026, the fails-to-deliver balance in PHIO is 1,038 shares, down 15,777 shares over the last settlement date. Over the last 30 readings it ranged from 59 shares (6 August 2026) to 394,647 shares (16 July 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-14 | 1,038 | $0.93 | $965 |
| 2026-10-01 | 16,815 | $1.03 | $17K |
| 2026-09-29 | 1,239 | $1.01 | $1K |
| 2026-09-21 | 2,589 | $1.03 | $3K |
| 2026-09-18 | 2,686 | $1.02 | $3K |
| 2026-09-17 | 1,236 | $1.00 | $1K |
| 2026-09-16 | 4,225 | $1.02 | $4K |
| 2026-09-15 | 4,099 | $1.03 | $4K |
| 2026-09-14 | 17,270 | $1.03 | $18K |
| 2026-09-11 | 14,730 | $1.01 | $15K |
| 2026-09-10 | 35,939 | $1.03 | $37K |
| 2026-09-09 | 21,128 | $1.03 | $22K |
| 2026-09-08 | 22,791 | $1.08 | $25K |
| 2026-09-04 | 17,759 | $1.11 | $20K |
| 2026-08-24 | 532 | $1.18 | $628 |
| 2026-08-21 | 588 | $1.21 | $711 |
| 2026-08-19 | 178 | $1.05 | $187 |
| 2026-08-18 | 1,161 | $1.06 | $1K |
| 2026-08-14 | 5,656 | $1.09 | $6K |
| 2026-08-13 | 4,092 | $1.08 | $4K |
| 2026-08-12 | 295 | $1.09 | $322 |
| 2026-08-11 | 30,670 | $1.06 | $33K |
| 2026-08-07 | 996 | $1.06 | $1K |
| 2026-08-06 | 59 | $1.07 | $63 |
| 2026-08-04 | 2,051 | $1.03 | $2K |
| 2026-07-22 | 11,417 | $1.13 | $13K |
| 2026-07-21 | 121 | $1.08 | $131 |
| 2026-07-20 | 1,415 | $1.03 | $1K |
| 2026-07-17 | 73,486 | $1.00 | $73K |
| 2026-07-16 | 394,647 | $0.89 | $351K |
Insider trades
SEC Form 4, newest first. JSONInsiders at PHIO reported 7 open-market buys worth $59K in the last 90 days and no open-market sells. Latest filing: Plott Ronald Todd (Director) on 2026-09-29.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-29 | Plott Ronald Todd | Director | Buy | 5K | $1.04 | $5K | 42K |
| 2026-09-28 | Plott Ronald Todd | Director | Buy | 5K | $1.03 | $5K | 37K |
| 2026-09-28 | Plott Ronald Todd | Director | Grant | 17K | $0.00 | $0 | 32K |
| 2026-09-28 | Carson Lisa Cabott | Chief Financial Officer | Grant | 108K | $0.00 | $0 | 189K |
| 2026-09-28 | Bitterman Robert J | Chairman, Pres. & CEO | Grant | 400K | $0.00 | $0 | 765K |
| 2026-09-24 | BRADFORD PATRICIA A | Director | Buy | 7K | $1.01 | $7K | 64K |
| 2026-09-22 | Bitterman Robert J | Chairman, Pres. & CEO | Buy | 2K | $1.03 | $2K | 365K |
| 2026-09-15 | BRADFORD PATRICIA A | Director | Buy | 12K | $1.03 | $12K | 58K |
| 2026-09-11 | Carson Lisa Cabott | Chief Financial Officer | Tax withholding | 13K | $1.03 | $13K | 81K |
| 2026-09-11 | Bitterman Robert J | Chairman, Pres. & CEO | Tax withholding | 69K | $1.03 | $71K | 363K |
| 2026-08-19 | Plott Ronald Todd | Director | Buy | 15K | $1.14 | $17K | 15K |
| 2026-08-18 | Bitterman Robert J | Chairman, Pres. & CEO | Buy | 10K | $1.06 | $11K | 431K |
| 2026-06-26 | Bitterman Robert J | Chairman, Pres. & CEO | Buy | 10K | $0.99 | $10K | 421K |
| 2026-02-05 | Lockshin Curtis | Director | Grant | 17K | $0.00 | $0 | 35K |
| 2026-02-05 | Freeman Jonathan E | Director | Grant | 17K | $0.00 | $0 | 33K |
| 2026-02-05 | Deming David H | Director | Grant | 24K | $0.00 | $0 | 38K |
| 2026-02-05 | Carson Lisa Cabott | Chief Financial Officer | Grant | 47K | $0.00 | $0 | 94K |
| 2026-02-05 | Bitterman Robert J | Chairman, Pres. & CEO | Grant | 120K | $0.00 | $0 | 411K |
| 2026-02-05 | BRADFORD PATRICIA A | Director | Grant | 19K | $0.00 | $0 | 46K |
| 2025-12-31 | Bitterman Robert J | Chairman, Pres. & CEO | Buy | 5K | $1.03 | $5K | 291K |
| 2025-12-23 | Bitterman Robert J | Chairman, Pres. & CEO | Buy | 5K | $1.02 | $5K | 286K |
| 2025-11-21 | Bitterman Robert J | Chairman, Pres. & CEO | Buy | 5K | $1.14 | $6K | 281K |
| 2025-11-18 | Bitterman Robert J | Chairman, Pres. & CEO | Buy | 5K | $1.27 | $6K | 276K |
| 2025-09-11 | Ferrara Robert L | Director | Grant | 23K | $0.00 | $0 | 39K |
| 2025-09-11 | Lockshin Curtis | Director | Grant | 16K | $0.00 | $0 | 19K |
| 2025-09-11 | Freeman Jonathan E | Director | Grant | 15K | $0.00 | $0 | 16K |
| 2025-09-11 | Ferrara Robert L | Director | Grant | 23K | $0.00 | $0 | 39K |
| 2025-09-11 | Deming David H | Director | Grant | 14K | $0.00 | $0 | 14K |
| 2025-09-11 | Carson Lisa Cabott | VP, Finance and Administration | Grant | 47K | $0.00 | $0 | 47K |
| 2025-09-11 | Bitterman Robert J | Chairman, Pres. & CEO | Grant | 250K | $0.00 | $0 | 271K |
| 2025-09-11 | Bitterman Robert J | Chairman, Pres. & CEO | Tax withholding | 4K | $2.32 | $10K | 21K |
| 2025-09-11 | BRADFORD PATRICIA A | Director | Grant | 19K | $0.00 | $0 | 27K |
| 2025-06-10 | Ferrara Robert L | Director | Buy | 3K | $2.42 | $6K | 16K |
| 2025-06-10 | Bitterman Robert J | Chairman, Pres & CEO | Buy | 2K | $2.42 | $5K | 27K |
| 2025-06-09 | Bitterman Robert J | Chairman, Pres & CEO | Buy | 2K | $2.75 | $4K | 25K |
| 2025-05-22 | Bitterman Robert J | Chairman, Pres & CEO | Buy | 1K | $1.78 | $2K | 24K |
| 2025-05-21 | Bitterman Robert J | Chairman, Pres & CEO | Buy | 3K | $1.77 | $5K | 22K |
| 2025-05-20 | Ferrara Robert L | Director | Buy | 3K | $1.82 | $5K | 13K |
| 2024-09-11 | BRADFORD PATRICIA A | Director | Grant | 8K | $0.00 | $0 | 8K |
| 2024-09-11 | Ferrara Robert L | Director | Grant | 10K | $0.00 | $0 | 10K |
| 2024-09-11 | Lockshin Curtis | Director | Grant | 2K | $0.00 | $0 | 2K |
| 2024-09-11 | Bitterman Robert J | Chairman, Pres & CEO | Grant | 16K | $0.00 | $0 | 18K |
| 2024-09-11 | Freeman Jonathan E | Director | Grant | 1K | $0.00 | $0 | 1K |
| 2024-09-11 | Infarinato Robert M. | VP, CFO | Grant | 3K | $0.00 | $0 | 11K |
| 2024-08-13 | Infarinato Robert M. | VP, Chief Financial Officer | Grant | 8K | $0.00 | $0 | 8K |
| 2024-06-07 | Bitterman Robert J | President & CEO | Buy | 1K | $0.74 | $740 | 21K |
| 2024-06-06 | Bitterman Robert J | President & CEO | Buy | 1K | $0.75 | $750 | 20K |
| 2024-03-01 | Kontulis Caitlin | Secretary & VP Finance & Admin | Tax withholding | 335 | $0.96 | $322 | 11K |
| 2024-02-26 | Bitterman Robert J | President & CEO | Buy | 3K | $0.91 | $2K | 19K |
| 2024-02-20 | Bitterman Robert J | President & CEO | Tax withholding | 2K | $0.76 | $1K | 16K |
| 2024-02-17 | Kontulis Caitlin | Secretary & VP Finance & Admin | Tax withholding | 523 | $0.66 | $345 | 11K |
| 2024-02-15 | Kontulis Caitlin | Secretary & VP Finance & Admin | Tax withholding | 658 | $0.65 | $428 | 12K |
| 2023-10-01 | Bitterman Robert J | President & CEO | Tax withholding | 917 | $1.51 | $1K | 18K |
| 2023-07-01 | Bitterman Robert J | President & CEO | Buy | 1K | $2.84 | $3K | 19K |
| 2023-06-30 | Bitterman Robert J | President & CEO | Buy | 1K | $2.88 | $3K | 18K |
| 2023-06-14 | Ferrara Robert L | Director | Buy | 2K | $3.10 | $6K | 6K |
| 2023-03-01 | Kontulis Caitlin | Secretary & VP Finance & Admin | Tax withholding | 335 | $5.49 | $2K | 12K |
| 2023-02-20 | Bitterman Robert J | President & CEO | Grant | 11K | $0.00 | $0 | 17K |
| 2023-02-17 | Kontulis Caitlin | Secretary & VP Finance & Admin | Grant | 5K | $0.00 | $0 | 12K |
| 2023-02-17 | BRADFORD PATRICIA A | Director | Grant | 2K | $0.00 | $0 | 3K |
| 2023-02-17 | CAUWENBERGH GEERT | Director | Grant | 2K | $0.00 | $0 | 4K |
| 2023-02-17 | Ferrara Robert L | Director | Grant | 2K | $0.00 | $0 | 4K |
| 2023-02-17 | Freeman Jonathan E | Director | Grant | 2K | $0.00 | $0 | 3K |
| 2023-02-17 | Lockshin Curtis | Director | Grant | 2K | $0.00 | $0 | 3K |
| 2023-02-15 | Kontulis Caitlin | Secretary & VP Finance & Admin | Tax withholding | 657 | $5.20 | $3K | 8K |
| 2022-12-14 | Bitterman Robert J | Interim Executive Chairman | Buy | 2K | $0.39 | $780 | 75K |
| 2022-12-07 | Bitterman Robert J | Interim Executive Chairman | Buy | 2K | $0.39 | $780 | 73K |
| 2022-12-05 | Bitterman Robert J | Interim Executive Chairman | Buy | 2K | $0.43 | $860 | 71K |
| 2022-12-02 | Ferrara Robert L | Director | Buy | 5K | $0.41 | $2K | 30K |
| 2022-11-29 | Bitterman Robert J | Interim Executive Chairman | Buy | 215 | $0.40 | $86 | 69K |
| 2022-11-25 | Bitterman Robert J | Interim Executive Chairman | Buy | 3K | $0.42 | $1K | 68K |
| 2022-11-23 | Ferrara Robert L | Director | Buy | 2K | $0.41 | $820 | 25K |
| 2022-11-16 | Bitterman Robert J | Interim Executive Chairman | Buy | 1 | $1750.00 | $2K | 1 |
| 2022-10-01 | Bitterman Robert J | Director | Grant | 40K | $0.00 | $0 | 66K |
| 2022-08-09 | BRADFORD PATRICIA A | Director | Grant | 20K | $0.00 | $0 | 20K |
| 2022-03-01 | Dispersyn Gerrit | President & CEO | Tax withholding | 9K | $0.82 | $7K | 212K |
| 2022-03-01 | Kontulis Caitlin | Secretary & VP Finance & Admin | Tax withholding | 4K | $0.82 | $3K | 104K |
| 2022-02-15 | Bitterman Robert J | Director | Grant | 10K | $0.00 | $0 | 26K |
| 2022-02-15 | CAUWENBERGH GEERT | Director | Grant | 10K | $0.00 | $0 | 33K |
| 2022-02-15 | Dispersyn Gerrit | President & CEO | Grant | 126K | $0.00 | $0 | 221K |
| 2022-02-15 | Dorman H. Paul | Director | Grant | 10K | $0.00 | $0 | 20K |
| 2022-02-15 | Ferrara Robert L | Director | Grant | 10K | $0.00 | $0 | 23K |
| 2022-02-15 | Freeman Jonathan E | Director | Grant | 10K | $0.00 | $0 | 20K |
| 2022-02-15 | Kontulis Caitlin | Secretary & VP Finance & Admin | Grant | 68K | $0.00 | $0 | 108K |
| 2022-02-15 | Lockshin Curtis | Director | Grant | 10K | $0.00 | $0 | 20K |
| 2021-08-16 | Dispersyn Gerrit | President & CEO | Buy | 6K | $1.63 | $10K | 95K |
| 2021-03-04 | Dispersyn Gerrit | President & CEO | Buy | 2K | $2.56 | $5K | 89K |
| 2021-03-03 | Dispersyn Gerrit | President & CEO | Buy | 3K | $3.03 | $8K | 87K |
| 2021-03-03 | Ferrara Robert L | Director | Buy | 682 | $3.15 | $2K | 13K |
| 2021-03-01 | Dispersyn Gerrit | President & CEO | Grant | 68K | $0.00 | $0 | 85K |
| 2021-03-01 | Kontulis Caitlin | Secretary & VP Finance & Admin | Grant | 35K | $0.00 | $0 | 40K |
| 2021-03-01 | Lockshin Curtis | Director | Grant | 10K | $0.00 | $0 | 10K |
| 2021-03-01 | Bitterman Robert J | Director | Grant | 10K | $0.00 | $0 | 16K |
| 2021-03-01 | Ferrara Robert L | Director | Grant | 10K | $0.00 | $0 | 12K |
| 2021-03-01 | CAUWENBERGH GEERT | Director | Grant | 10K | $0.00 | $0 | 23K |
| 2021-03-01 | Freeman Jonathan E | Director | Grant | 10K | $0.00 | $0 | 10K |
| 2021-03-01 | Dorman H. Paul | Director | Grant | 10K | $0.00 | $0 | 10K |
| 2020-08-19 | Dispersyn Gerrit | President & CEO | Buy | 2K | $2.50 | $5K | 16K |
| 2020-03-01 | Dispersyn Gerrit | President & CEO | Tax withholding | 673 | $2.93 | $2K | 15K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON5 holders report 5% or more of PHIO in their latest filing, all on Schedule 13G (passive). The largest reported stake is CVI Investments, Inc. at 9.9% of the class (1,194,719 shares), filed 2026-02-17 for an event on 2025-12-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-02-17 | 13G/Ano. 1 | CVI Investments, Inc.corporation | 1.2M | 9.9% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 1 | Heights Capital Management, Inc.corporation | 1.2M | 9.9% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | Mitchell P. Kopinparent holding company, individual | 1.1M | 9.1% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | Daniel B. Asherparent holding company, individual | 1.1M | 9.1% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | Intracoastal Capital LLCother entity | 1.1M | 9.1% | 2025-12-31 |
| 2025-12-11 | 13G/Ano. 5 | Orca Capital AGcorporation | 539K | 4.9% | 2025-12-08 |
13F holders
Tracked managers holding PHIO at their latest 13F. JSON2 of the 30 tracked managers held PHIO at their latest 13F, $70K in total at quarter-end prices. Citadel Advisors is the largest at $48K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 47K | $48K | 0.00% | new |
| Two Sigma Investments | 2026-06-30 | 22K | $22K | 0.00% | -11K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Phio Pharmaceuticals in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Phio Pharmaceuticals (PHIO), SEC CIK 1533040, listed on Nasdaq, classified by the SEC as pharmaceutical preparations. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-03.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-14.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-02-17.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-06.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-09-29.JSON and CSV
- Company record
- EDGAR filing index for CIK 1533040Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Frequently Asked Questions
How much of PHIO is sold short?
136,375 shares were held short at the 2026-10-15 settlement, 1.5 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is PHIO's daily short volume?
On 2026-11-03, 5,011 of the 23,137 PHIO shares reported to FINRA were sold short, 21.7% of the day's reported volume. Short volume is a flow for one day, not a position.
Does PHIO have fails to deliver?
The SEC's latest file shows 1,038 PHIO shares failed to deliver at settlement 2026-10-14. Fails are reported per settlement date and published twice a month with a lag.
Are PHIO insiders buying or selling?
Insiders at PHIO reported 7 open-market buys worth $59K in the last 90 days and no open-market sells. Latest filing: Plott Ronald Todd (Director) on 2026-09-29.
Who owns 5% or more of PHIO?
5 holders report 5% or more of PHIO in their latest filing, all on Schedule 13G (passive). The largest reported stake is CVI Investments, Inc. at 9.9% of the class (1,194,719 shares), filed 2026-02-17 for an event on 2025-12-31.
Which tracked 13F managers own PHIO?
2 of the 30 tracked 13F managers held PHIO shares at their latest filing, $70K in all. The largest: Ken Griffin's Citadel Advisors (47K shares, $48K), Two Sigma Investments (22K shares, $22K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.