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Cardio Diagnostics (CDIO) Short Interest Ratio & Short Volume

Cardio Diagnostics logo
$2.00 -0.11 (-5.40%)
As of 12:47 PM Eastern
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Cardio Diagnostics Short Interest Overview

As of May 15, 2026, Cardio Diagnostics (CDIO) had a short interest of 19,000 shares sold short, representing 0.74% of the public float. This marks a -59.41% decrease in short interest since the prior report. The short interest ratio (days to cover) is 0.2, meaning it would take 0.2 days of the average trading volume of 2.35 million shares to cover all short positions.

Current Short Interest
19,000 shares
Previous Short Interest
46,815 shares
Change Vs. Previous Month
-59.41%
Dollar Volume Sold Short
$29.45 thousand
Short Interest Ratio
0.2 Days to Cover
Last Record Date
May 15, 2026
Outstanding Shares
2,960,000 shares
Short Percent of Float
0.74%
Today's Trading Volume
46,354 shares
Average Trading Volume
2,350,788 shares
Today's Volume Vs. Average
2%
Short Selling Cardio Diagnostics?
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

CDIO Short Interest Over Time

CDIO Days to Cover Over Time

CDIO Percentage of Float Shorted Over Time

Cardio Diagnostics 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
5/15/202619,000 shares $29.45 thousand -59.4%0.7%0.22 $1.55
4/30/202646,815 shares $83.80 thousand -12.9%1.8%1.2 $1.79
4/15/202653,761 shares $108.06 thousand +141.5%2.1%0.57 $2.01
3/31/202622,264 shares $43.41 thousand -86.1%0.9%0.08 $1.95
3/13/2026160,544 shares $449.52 thousand -68.6%6.3%0.19 $2.80
2/27/2026510,812 shares $3.35 million +316.9%32.3%0.02 $6.55
2/13/2026122,516 shares $155.60 thousand -15.2%7.7%1.13 $1.27
1/30/2026144,490 shares $218.18 thousand +8.2%9.1%0.9 $1.51
1/15/2026133,590 shares $235.12 thousand +2,380.8%8.4%0.06 $1.76
12/31/20255,385 shares $14.59 thousand +145.8%0.3%0.17 $2.71
12/15/20252,191 shares $6.75 thousand -91.7%0.1%0.09 $3.08
11/28/202526,439 shares $76.54 thousand +507.0%1.7%0.66 $2.90
11/14/20254,356 shares $14.85 thousand -15.6%0.3%0.17 $3.41
10/31/20255,160 shares $20.85 thousand -87.0%0.3%0.14 $4.04
10/15/202539,600 shares $178.60 thousand +48.9%2.4%1.1 $4.51
9/30/202526,600 shares $106.67 thousand -48.2%1.6%0.7 $4.01
9/15/202551,300 shares $192.38 thousand +196.5%3.1%1.5 $3.75
8/31/202517,300 shares $67.02 thousand -12.2%1.1%0.4 $3.87
8/15/202519,700 shares $71.51 thousand -3.9%1.1%0.4 $3.63
7/31/202520,500 shares $84.87 thousand +51.9%1.2%0.3 $4.14
7/15/202513,500 shares $60.21 thousand -70.3%0.8%0.2 $4.46
6/30/202545,400 shares $163.44 thousand -21.3%2.6%0.8 $3.60
6/15/202557,700 shares $234.26 thousand -32.8%3.3%1 $4.06
5/31/202585,900 shares $351.33 thousand +53.1%5.3%1.6 $4.09
5/15/202556,100 shares $224.40 thousand -95.7%3.5%1.1 $4.00
4/30/20251,310,000 shares $16.69 million -29.2%2.7%1 $12.74
4/15/20251,850,000 shares $737.78 thousand +19.4%3.8%1.3 $0.40
3/31/20251,550,000 shares $511.50 thousand +24.0%3.2%0.7 $0.33
3/15/20251,250,000 shares $530.38 thousand -36.9%2.6%0.5 $0.42
2/28/20251,980,000 shares $889.61 thousand -21.4%4.2%0.3 $0.45
2/15/20252,520,000 shares $1.69 million +43.2%6.9%0.4 $0.67
1/31/20251,760,000 shares $772.99 thousand +439.6%4.8%0.3 $0.44
1/15/2025326,200 shares $192.46 thousand -78.7%0.9%0 $0.59
12/31/20241,530,000 shares $1.40 million -56.0%4.2%0.2 $0.92
12/15/20243,480,000 shares $4.38 million +124.5%9.5%0.5 $1.26
11/30/20241,550,000 shares $471.20 thousand +261.3%4.5%0.3 $0.30
11/15/2024429,000 shares $109.40 thousand -74.5%2.0%0.1 $0.26
10/31/20241,680,000 shares $470.40 thousand +64.7%7.7%0.7 $0.28
10/15/20241,020,000 shares $218.48 thousand -63.6%4.7%0.8 $0.21
9/30/20242,800,000 shares $624.40 thousand +1,100.2%12.8%3 $0.22
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9/15/2024233,300 shares $69.66 thousand -41.7%1.2%0.9 $0.30
8/31/2024400,200 shares $150.08 thousand +28.9%2.0%1.7 $0.38
8/15/2024310,500 shares $131.34 thousand +14.1%1.6%1.5 $0.42
7/31/2024272,100 shares $122.45 thousand -7.9%1.4%0.6 $0.45
7/15/2024295,400 shares $149.47 thousand -34.2%1.6%0.6 $0.51
6/30/2024448,900 shares $246.90 thousand +3.3%2.4%1 $0.55
6/15/2024434,400 shares $259.77 thousand -17.9%2.3%0.9 $0.60
5/31/2024529,300 shares $366.65 thousand -59.3%2.8%1 $0.69
5/15/20241,300,000 shares $1.10 million +286.3%7.0%2.2 $0.85
4/30/2024336,500 shares $230.50 thousand -34.1%1.9%0.9 $0.69
4/15/2024510,400 shares $509.12 thousand +14.8%2.9%1 $1.00
3/31/2024444,600 shares $631.33 thousand -2.6%2.5%0.6 $1.42
3/15/2024456,300 shares $574.94 thousand -7.7%2.7%0.4 $1.26
2/29/2024494,300 shares $800.77 thousand -32.6%3.0%0.3 $1.62
2/15/2024733,200 shares $1.31 million -3.2%4.4%0.3 $1.78
1/31/2024757,500 shares $1.65 million -10.6%4.5%0.1 $2.18
1/15/2024847,000 shares $2.22 million +78.6%5.1%0.1 $2.62
12/31/2023474,200 shares $1.18 million -38.3%2.8%0 $2.49
12/15/2023768,000 shares $1.80 million -28.2%4.6%0.1 $2.34
11/30/20231,070,000 shares $2.18 million -58.2%7.7%0.1 $2.04
11/15/20232,560,000 shares $2.71 million +774.9%18.4%0.2 $1.06
10/31/2023292,600 shares $88.25 thousand +11.3%5.3%0 $0.30
10/15/2023263,000 shares $68.93 thousand +282.3%4.8%0.5 $0.26
9/30/202368,800 shares $23.39 thousand +53.2%1.3%0.4 $0.34
9/15/202344,900 shares $22.00 thousand +532.4%0.8%0.3 $0.49
8/31/20237,100 shares $3.90 thousand -49.3%0.1%0 $0.55
8/15/202314,000 shares $13.16 thousand -79.8%0.3%0.1 $0.94
7/31/202369,200 shares $83.73 thousand -39.7%1.3%0.4 $1.21
7/15/2023114,700 shares $122.73 thousand -7.5%2.2%0.6 $1.07
6/30/2023124,000 shares $147.56 thousand -3.1%2.4%0.6 $1.19
6/15/2023127,900 shares $172.67 thousand -44.1%2.4%0.7 $1.35
5/31/2023228,600 shares $340.61 thousand +99.5%4.4%1 $1.49
5/15/2023114,600 shares $207.21 thousand No Change2.2%0 $1.81

CDIO Short Interest - Frequently Asked Questions

Short interest is the volume of Cardio Diagnostics shares that have been sold short but have not yet been covered or closed out. As of May 15th, traders have sold 19,000 shares of CDIO short. 0.74% of Cardio Diagnostics' shares are currently sold short. Learn More on Cardio Diagnostics' 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. CDIO shares currently have a short interest ratio of 0.2. Learn More on Cardio Diagnostics'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. 0.74% of Cardio Diagnostics' floating shares are currently sold short.

Cardio Diagnostics saw a decrease in short interest during the month of May. As of May 15th, there was short interest totaling 19,000 shares, a decrease of 59.4% from the previous total of 46,815 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.

0.74% of Cardio Diagnostics' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Cardio Diagnostics: Novogen Limited (22.17%), Quince Therapeutics, Inc. (13.53%), Anebulo Pharmaceuticals, Inc. (1.77%), Citius Pharmaceuticals, Inc. (19.80%), MetaVia Inc. (1.35%), Lipocine Inc. (1.32%), Ainos, Inc. (0.31%), NLS Pharmaceutics Ltd. (1.11%), Longeveron Inc. (11.33%), Passage Bio, Inc. (5.33%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($80.71 billion), Invesco QQQ ($47.96 billion), iShares Russell 2000 ETF ($22.13 billion), Western Digital Corporation ($14.35 billion), Sandisk Corporation ($12.86 billion), Salesforce Inc. ($10.89 billion), Nebius Group N.V. ($9.92 billion), SPDR S&P Biotech ETF ($9.72 billion), Lumentum Holdings Inc. ($8.89 billion), and iShares 20+ Year Treasury Bond ETF ($8.18 billion). View all of the most shorted stocks.

Short selling CDIO is an investing strategy that aims to generate trading profit from Cardio Diagnostics as its price is falling. CDIO shares are trading down $0.04 today. 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 Cardio Diagnostics occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of CDIO, 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 CDIO, twice per month. The most recent reporting period available is May, 15 2026.

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

  • 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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Short Interest Tools

This page (NASDAQ:CDIO) was last updated on 6/5/2026 by MarketBeat.com Staff.
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