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Phio Pharmaceuticals (PHIO) Short Interest Ratio & Short Volume

Phio Pharmaceuticals logo
$1.09 0.00 (0.00%)
Closing price 05/22/2026 04:00 PM Eastern
Extended Trading
$1.10 +0.00 (+0.46%)
As of 05/22/2026 07:40 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Phio Pharmaceuticals Short Interest Overview

As of April 30, 2026, Phio Pharmaceuticals (PHIO) had a short interest of 469,570 shares sold short, representing 4.08% of the public float. This marks a -9.79% decrease in short interest since the prior report. The short interest ratio (days to cover) is 4.2, meaning it would take 4.2 days of the average trading volume of 140,572 shares to cover all short positions.

Current Short Interest
469,570 shares
Previous Short Interest
520,525 shares
Change Vs. Previous Month
-9.79%
Dollar Volume Sold Short
$572.88 thousand
Short Interest Ratio
4.2 Days to Cover
Last Record Date
April 30, 2026
Outstanding Shares
11,620,000 shares
Short Percent of Float
4.08%
Today's Trading Volume
115,869 shares
Average Trading Volume
140,572 shares
Today's Volume Vs. Average
82%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

PHIO Short Interest Over Time

PHIO Days to Cover Over Time

PHIO Percentage of Float Shorted Over Time

Phio Pharmaceuticals Tesla Short Interest History & Recent Changes

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Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
4/30/2026469,570 shares $572.88 thousand -9.8%4.1%4.22 $1.22
4/15/2026520,525 shares $687.09 thousand -9.0%4.5%2.99 $1.32
3/31/2026571,887 shares $697.70 thousand -2.4%5.0%1.7 $1.22
3/13/2026585,794 shares $685.38 thousand +10.9%5.1%1.24 $1.17
2/27/2026528,245 shares $602.20 thousand -77.4%4.6%0.47 $1.14
2/13/20262,335,588 shares $3.85 million +259.3%21.9%0.12 $1.65
1/30/2026650,035 shares $656.54 thousand +36.8%6.1%1.96 $1.01
1/15/2026475,269 shares $537.05 thousand +55.8%4.5%1.22 $1.13
12/31/2025305,070 shares $320.32 thousand +50.7%2.9%0.87 $1.05
12/15/2025202,403 shares $220.62 thousand -18.8%1.9%0.54 $1.09
11/28/2025249,310 shares $315.38 thousand -28.5%2.3%0.6 $1.27
11/14/2025348,456 shares $452.99 thousand +50.0%6.1%0.02 $1.30
10/31/2025232,245 shares $476.10 thousand -14.2%4.1%4.39 $2.05
10/15/2025270,700 shares $606.37 thousand -1.6%5.6%0.3 $2.24
9/30/2025275,100 shares $682.25 thousand +4.9%5.7%0.3 $2.48
9/15/2025262,200 shares $558.49 thousand -9.7%5.4%0.3 $2.13
8/31/2025290,400 shares $572.09 thousand -32.3%5.5%0.3 $1.97
8/15/2025429,000 shares $935.22 thousand -40.0%8.1%0.4 $2.18
7/31/2025715,300 shares $1.70 million +117.5%15.1%0.6 $2.38
7/15/2025328,900 shares $782.78 thousand -3.3%7.0%0.6 $2.38
6/30/2025340,100 shares $799.24 thousand +41.2%7.2%0.1 $2.35
6/15/2025240,900 shares $546.84 thousand +6.2%5.1%0.1 $2.27
5/31/2025226,900 shares $446.99 thousand -45.1%4.8%0.1 $1.97
5/15/2025413,000 shares $735.14 thousand +50.4%8.7%0.1 $1.78
4/30/2025274,700 shares $527.42 thousand -80.9%5.8%0.1 $1.92
4/15/20251,440,000 shares $3.50 million +1,729.7%34.0%0.5 $2.43
3/31/202578,700 shares $102.31 thousand +14.2%1.9%0 $1.30
3/15/202568,900 shares $88.88 thousand +3.3%1.6%0 $1.29
2/28/202566,700 shares $94.71 thousand +46.6%1.6%0 $1.42
2/15/202545,500 shares $82.36 thousand -54.3%1.1%0 $1.81
1/31/202599,600 shares $205.18 thousand -82.4%2.4%0 $2.06
1/15/2025566,400 shares $1.51 million +749.2%17.3%0.1 $2.66
12/31/202466,700 shares $120.06 thousand +67.6%4.0%0.2 $1.80
12/15/202439,800 shares $111.84 thousand -17.3%2.7%0.1 $2.81
11/30/202448,100 shares $130.83 thousand +0.2%4.7%0.7 $2.72
11/15/202448,000 shares $106.56 thousand -6.8%4.7%0.7 $2.22
10/31/202451,500 shares $153.47 thousand +141.8%6.2%0.8 $2.98
10/15/202421,300 shares $58.79 thousand -55.9%2.6%0.3 $2.76
9/30/202448,300 shares $170.02 thousand +182.5%5.8%0.9 $3.52
9/15/202417,100 shares $56.26 thousand +83.9%2.1%0.4 $3.29
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8/31/20249,300 shares $25.30 thousand -47.2%1.1%0.3 $2.72
8/15/202417,600 shares $45.41 thousand +7.3%3.5%0.5 $2.58
7/31/202416,400 shares $52.48 thousand +178.0%3.3%0.5 $3.20
7/15/20245,900 shares $27.55 thousand -62.7%1.2%0.2 $4.67
6/30/202415,800 shares $98.39 thousand -89.6%3.1%0.7 $6.23
6/15/2024152,000 shares $108.00 thousand -14.2%3.3%0.7 $0.71
5/31/2024177,100 shares $129.28 thousand +1.3%3.9%0.7 $0.73
5/15/2024174,800 shares $139.84 thousand -5.4%3.8%0.5 $0.80
4/30/2024184,700 shares $128.74 thousand +446.5%4.1%0.4 $0.70
4/15/202433,800 shares $22.00 thousand +57.9%0.8%0.1 $0.65
3/31/202421,400 shares $14.55 thousand -87.9%0.5%0.1 $0.68
3/15/2024176,600 shares $167.59 thousand +283.9%7.4%0.6 $0.95
2/29/202446,000 shares $49.68 thousand -30.0%1.9%0.1 $1.08
2/15/202465,700 shares $42.71 thousand +390.3%2.7%0.1 $0.65
1/31/202413,400 shares $7.96 thousand -74.1%0.6%0 $0.59
1/15/202451,800 shares $35.70 thousand -66.4%2.2%0.1 $0.69
12/31/2023154,200 shares $117.19 thousand +23.8%6.4%0.1 $0.76
12/15/2023124,600 shares $94.70 thousand +783.7%5.2%0.1 $0.76
11/30/202314,100 shares $15.42 thousand -35.0%0.6%0 $1.09
11/15/202321,700 shares $22.57 thousand -35.2%0.9%0 $1.04
10/31/202333,500 shares $41.54 thousand -91.2%1.5%0 $1.24
10/15/2023379,900 shares $566.05 thousand +1,920.7%17.4%0.4 $1.49
9/30/202318,800 shares $28.39 thousand +8.7%0.9%0.8 $1.51
9/15/202317,300 shares $28.55 thousand +17.7%0.8%0.6 $1.65
8/31/202314,700 shares $31.31 thousand +19.5%0.7%0.5 $2.13
8/15/202312,300 shares $27.68 thousand +2.5%0.6%0.2 $2.25
7/31/202312,000 shares $32.04 thousand -60.0%0.8%0 $2.67
7/15/202330,000 shares $81.90 thousand +18.1%2.0%0.1 $2.73
6/30/202325,400 shares $72.90 thousand -71.9%1.7%0 $2.87
6/15/202390,300 shares $295.28 thousand -12.6%6.1%0.2 $3.27
5/31/2023103,300 shares $361.55 thousand +588.7%7.0%0.2 $3.50
5/15/202315,000 shares $50.55 thousand -49.8%1.0%0 $3.37
4/30/202329,900 shares $101.06 thousand +116.7%2.7%0.2 $3.38
4/15/202313,800 shares $70.82 thousand -25.4%1.2%0.1 $5.13
3/31/202318,500 shares $103.97 thousand -39.5%1.7%0.8 $5.62
3/15/202330,600 shares $174.13 thousand -30.6%2.8%0.8 $5.69
2/28/202344,100 shares $241.67 thousand +3.5%4.1%1.2 $5.48
2/15/202342,600 shares $221.52 thousand +27.5%3.9%1.2 $5.20
1/31/202333,400 shares $207.81 thousand -91.0%3.0%1.1 $6.22
1/15/2023370,600 shares $199.68 thousand +305.9%2.8%1.4 $0.54
12/30/202291,300 shares $33.96 thousand +157.2%0.7%0.4 $0.37
12/15/202235,500 shares $12.78 thousand +7.3%0.3%0.3 $0.36
11/30/202233,100 shares $13.90 thousand -14.7%0.3%0.5 $0.42
11/15/202238,800 shares $17.48 thousand -38.1%0.3%0.5 $0.45
10/31/202262,700 shares $36.05 thousand -35.6%0.5%0.8 $0.58
10/15/202297,300 shares $54.24 thousand +19.2%0.7%1.1 $0.56
9/30/202281,600 shares $46.62 thousand -6.5%0.6%0.9 $0.57
9/15/202287,300 shares $64.79 thousand +46.7%0.7%0.8 $0.74
8/31/202259,500 shares $41.67 thousand -31.6%0.4%0.5 $0.70
8/15/202287,000 shares $66.47 thousand +0.8%0.7%0.5 $0.76
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7/31/202286,300 shares $61.71 thousand +13.1%0.6%0.3 $0.72
7/15/202276,300 shares $53.96 thousand -39.4%0.6%0.2 $0.71
6/30/2022125,900 shares $88.39 thousand -48.9%1.0%0 $0.70
6/15/2022246,400 shares $168.12 thousand -33.2%1.9%0.1 $0.68
5/31/2022368,700 shares $267.27 thousand +102.8%2.8%0.1 $0.72
5/15/2022181,800 shares $128.62 thousand -23.7%1.4%0.1 $0.71
4/30/2022238,100 shares $200.00 thousand -78.7%1.8%0.1 $0.84
4/15/20221,120,000 shares $1.33 million +462.3%8.6%0.3 $1.19
3/31/2022199,200 shares $176.69 thousand +159.7%1.5%0.1 $0.89
3/15/202276,700 shares $61.36 thousand +50.7%0.6%0.1 $0.80
2/28/202250,900 shares $41.23 thousand -27.3%0.4%0.1 $0.81
2/15/202270,000 shares $60.28 thousand -56.8%0.5%0.1 $0.86
1/31/2022162,000 shares $141.75 thousand -80.7%1.2%0.3 $0.88
1/15/2022840,300 shares $742.83 thousand +155.9%6.3%1.4 $0.88
12/31/2021328,400 shares $328.40 thousand -12.5%2.5%1.8 $1.00
12/15/2021375,100 shares $420.11 thousand -18.0%2.8%2.1 $1.12
11/30/2021457,600 shares $617.76 thousand +6.7%3.4%1.2 $1.35
11/15/2021429,000 shares $652.08 thousand -2.0%3.2%1.1 $1.52
10/29/2021437,600 shares $735.17 thousand -3.2%3.3%1.1 $1.68
10/15/2021452,000 shares $754.84 thousand -9.3%3.4%1 $1.67
9/30/2021498,500 shares $1.01 million -46.7%3.7%1 $2.03
9/15/2021934,600 shares $1.84 million -11.8%7.0%1.9 $1.97
8/31/20211,060,000 shares $2.20 million -7.0%8.0%3.2 $2.08
8/13/20211,140,000 shares $1.96 million -12.3%8.6%2.8 $1.72
7/30/20211,300,000 shares $2.34 million +14.0%9.8%2.4 $1.80
7/15/20211,140,000 shares $2.17 million +8.6%8.6%1.3 $1.90
6/30/20211,050,000 shares $2.37 million -7.9%7.9%1.3 $2.26
6/15/20211,140,000 shares $2.58 million -26.5%8.6%1.3 $2.26
5/28/20211,550,000 shares $3.44 million +16.5%11.6%1.7 $2.22

PHIO Short Interest - Frequently Asked Questions

Short interest is the volume of Phio Pharmaceuticals shares that have been sold short but have not yet been closed out or covered. As of April 30th, investors have sold 469,570 shares of PHIO short. 4.08% of Phio Pharmaceuticals' shares are currently sold short. Learn More on Phio Pharmaceuticals' current short interest.

The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. PHIO shares currently have a short interest ratio of 4.2. Learn More on Phio Pharmaceuticals's short interest ratio.

Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 4.08% of Phio Pharmaceuticals' floating shares are currently sold short.

Phio Pharmaceuticals saw a decrease in short interest in April. As of April 30th, there was short interest totaling 469,570 shares, a decrease of 9.8% from the previous total of 520,525 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment.

4.08% of Phio Pharmaceuticals' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Phio Pharmaceuticals: Incannex Healthcare Inc. (8.43%), OnKure Therapeutics, Inc. (0.92%), Xilio Therapeutics, Inc. (2.94%), InterCure Ltd. (0.06%), Talphera, Inc. (2.08%), Zhengye Biotechnology Holding Limited (0.07%), Atossa Genetics Inc. (4.35%), Elutia Inc. (0.41%), Synaptogenix, Inc. (8.63%), Lite Strategy, Inc. (0.27%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($86.09 billion), Invesco QQQ ($39.89 billion), iShares Russell 2000 ETF ($26.13 billion), Western Digital Corporation ($12.66 billion), Salesforce Inc. ($12.29 billion), Sandisk Corporation ($11.87 billion), SPDR S&P Biotech ETF ($9.82 billion), Lumentum Holdings Inc. ($8.51 billion), iShares 20+ Year Treasury Bond ETF ($7.76 billion), and Bloom Energy Corporation ($7.40 billion). View all of the most shorted stocks.

Short selling PHIO is an investing strategy that aims to generate trading profit from Phio Pharmaceuticals as its price is falling. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit.

A short squeeze for Phio Pharmaceuticals occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of PHIO, which in turn drives the price of the stock up even further.

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including PHIO, twice per month. The most recent reporting period available is April, 30 2026.

Understanding short interest metrics can help you assess how traders are positioning around a stock like PHIO:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.


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This page (NASDAQ:PHIO) was last updated on 5/26/2026 by MarketBeat.com Staff.
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