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Quantum-Si (QSIAW) Short Interest Ratio & Short Volume

Quantum-Si logo
$0.03 +0.00 (+17.72%)
Closing price 05/19/2026 03:51 PM Eastern
Extended Trading
$0.03 +0.00 (+1.34%)
As of 05/19/2026 04:09 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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Quantum-Si Short Interest Overview

As of April 30, 2026, Quantum-Si (QSIAW) had a short interest of 5,502 shares sold short. This marks a 43.84% increase in short interest since the prior report. The short interest ratio (days to cover) is 0.5, meaning it would take 0.5 days of the average trading volume of 12,997 shares to cover all short positions.

Current Short Interest
5,502 shares
Previous Short Interest
3,825 shares
Change Vs. Previous Month
43.84%
Dollar Volume Sold Short
$402.20
Short Interest Ratio
0.5 Days to Cover
Last Record Date
April 30, 2026
Today's Trading Volume
16,326 shares
Average Trading Volume
12,997 shares
Today's Volume Vs. Average
126%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

QSIAW Short Interest Over Time

QSIAW Days to Cover Over Time

QSIAW Percentage of Float Shorted Over Time

Quantum-Si 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
4/30/20265,502 shares $402.20 +43.8%N/A0.46 $0.07
4/15/20263,825 shares $393.98 -16.5%N/A0.24 $0.10
3/31/20264,578 shares $503.58 +9.6%N/A0.84 $0.11
3/13/20264,178 shares $647.59 -7.4%N/A0.39 $0.16
2/27/20264,510 shares $853.74 +4.6%N/A0.48 $0.19
2/13/20264,313 shares $560.69 -23.3%N/A0.39 $0.13
1/30/20265,622 shares $865.79 +7.7%N/A0.53 $0.15
1/15/20265,219 shares $981.17 -33.3%N/A0.37 $0.19
12/31/20257,828 shares $1.57 thousand +134.4%N/A0.37 $0.20
12/15/20253,340 shares $737.14 -26.7%N/A0.29 $0.22
11/28/20254,556 shares $1.29 thousand +15.8%N/A0.4 $0.28
11/14/20253,936 shares $1.14 thousand -48.2%N/A0.3 $0.29
10/31/20257,604 shares $3.04 thousand +190.8%N/A0.07 $0.40
10/15/20252,600 shares $1.39 thousand -46.9%N/A0 $0.53
9/30/20254,900 shares $1.32 thousand -75.7%N/A0.1 $0.27
9/15/202520,200 shares $4.27 thousand -60.7%N/A0.4 $0.21
8/31/202551,400 shares $23.49 thousand +26.3%N/A1.9 $0.46
8/15/202540,700 shares $14.12 thousand +8.5%N/A2.4 $0.35
7/31/202537,500 shares $17.25 thousand -24.7%N/A1.4 $0.46
7/15/202549,800 shares $29.97 thousand -0.6%N/A1.8 $0.60
6/30/202550,100 shares $32.62 thousand -25.9%N/A1.9 $0.65
6/15/202567,600 shares $45.70 thousand -21.6%N/A2.3 $0.68
5/31/202586,200 shares $71.12 thousand +19.1%N/A2.7 $0.83
5/15/202572,400 shares $35.47 thousand +103.4%N/A2.3 $0.49
4/30/202535,600 shares $12.46 thousand -13.4%N/A1.4 $0.35
4/15/202541,100 shares $15.86 thousand +12.9%N/A1.4 $0.39
3/31/202536,400 shares $14.56 thousand -2.2%N/A0.7 $0.40
3/15/202537,200 shares $18.04 thousand +1.9%N/A0.3 $0.49
2/28/202536,500 shares $17.99 thousand -8.5%N/A0.3 $0.49
2/15/202539,900 shares $28.93 thousand -33.6%N/A0.2 $0.73
1/31/202560,100 shares $43.27 thousand +51.4%N/A0.3 $0.72
1/15/202539,700 shares $37.71 thousand -58.9%N/A0.2 $0.95
12/31/202496,500 shares $120.63 thousand +209.3%N/A0.6 $1.25
12/15/202431,200 shares $13.42 thousand -47.9%N/A0.4 $0.43
11/30/202459,900 shares $22.16 thousand +1,074.5%N/A0.9 $0.37
11/15/20245,100 shares $260.61 +325.0%N/A0.1 $0.05
10/31/20241,200 shares $78.84 -80.3%N/A0.1 $0.07
10/15/20246,100 shares $484.95 +369.2%N/A0.9 $0.08
9/30/20241,300 shares $113.49 -7.1%N/A0.2 $0.09
9/15/20241,400 shares $138.60 No ChangeN/A0.2 $0.10
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8/31/20241,400 shares $138.37 -6.7%N/A0.3 $0.10
8/15/20241,500 shares $202.35 -31.8%N/A0.3 $0.13
7/31/20242,200 shares $333.96 +10.0%N/A0.4 $0.15
7/15/20242,000 shares $360.00 +11.1%N/A0.3 $0.18
6/30/20241,800 shares $225.00 -55.0%N/A0.3 $0.13
6/15/20244,000 shares $700.00 No ChangeN/A0.6 $0.18
5/31/20244,000 shares $720.00 -39.4%N/A0.5 $0.18
5/15/20246,600 shares $1.25 thousand -1.5%N/A0.7 $0.19
4/30/20246,700 shares $1.54 thousand -4.3%N/A0.7 $0.23
4/15/20247,000 shares $1.68 thousand +118.8%N/A0.8 $0.24
3/31/20243,200 shares $775.04 -22.0%N/A0.3 $0.24
3/15/20244,100 shares $1.18 thousand +272.7%N/A0.4 $0.29
2/29/20241,100 shares $225.50 No ChangeN/A0.1 $0.21
2/15/20241,100 shares $176.00 +120.0%N/A0.1 $0.16
1/31/2024500 shares $65.50 -76.2%N/A0.1 $0.13
1/15/20242,100 shares $582.75 -70.4%N/A0.3 $0.28
12/31/20237,100 shares $2.24 thousand -32.4%N/A1.2 $0.32
12/15/202310,500 shares $2.73 thousand +356.5%N/A1.9 $0.26
11/30/20232,300 shares $506.00 -4.2%N/A0.4 $0.22
11/15/20232,400 shares $648.00 +26.3%N/A0.3 $0.27
10/31/20231,900 shares $199.50 -24.0%N/A0.2 $0.11
10/15/20232,500 shares $718.25 +4.2%N/A0.3 $0.29
9/30/20232,400 shares $648.00 +20.0%N/A0.2 $0.27
9/15/20232,000 shares $620.00 -51.2%N/A0.2 $0.31
8/31/20234,100 shares $1.44 thousand -21.2%N/A0.3 $0.35
8/15/20235,200 shares $2.08 thousand -51.4%N/A0.4 $0.40
7/31/202310,700 shares $7.99 thousand +1.9%N/A0.7 $0.75
7/15/202310,500 shares $3.67 thousand +45.8%N/A0.8 $0.35
6/30/20237,200 shares $1.66 thousand -20.9%N/A0.9 $0.23
6/15/20239,100 shares $1.75 thousand +24.7%N/A1 $0.19
5/31/20237,300 shares $1.79 thousand -9.9%N/A0.8 $0.25
5/15/20238,100 shares $1.38 thousand +2.5%N/A1.1 $0.17
4/30/20237,900 shares $1.19 thousand +5.3%N/A1 $0.15
4/15/20237,500 shares $1.13 thousand +1.4%N/A0.9 $0.15
3/31/20237,400 shares $1.11 thousand -1.3%N/A0.7 $0.15
3/15/20237,500 shares $2.18 thousand No ChangeN/A0.7 $0.29
2/28/20237,500 shares $1.94 thousand -9.6%N/A0.6 $0.26
2/15/20238,300 shares $2.91 thousand +56.6%N/A0.7 $0.35
1/31/20235,300 shares $2.88 thousand +32.5%N/A0.5 $0.54
1/15/20234,000 shares $1.69 thousand -4.8%N/A0.4 $0.42
12/30/20224,200 shares $1.05 thousand +55.6%N/A0.5 $0.25
12/15/20222,700 shares $903.15 -6.9%N/A0.4 $0.33
11/30/20222,900 shares $1.02 thousand No ChangeN/A0.5 $0.35
11/15/20222,900 shares $1.51 thousand -6.5%N/A0.6 $0.52
10/31/20223,100 shares $1.77 thousand +34.8%N/A0.7 $0.57
10/15/20222,300 shares $1.01 thousand -25.8%N/A0.5 $0.44
9/30/20223,100 shares $1.64 thousand -3.1%N/A0.8 $0.53
9/15/20223,200 shares $1.95 thousand -3.0%N/A0.8 $0.61
8/31/20223,300 shares $2.05 thousand -10.8%N/A0.7 $0.62
8/15/20223,700 shares $2.95 thousand +5.7%N/A0.6 $0.80
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7/31/20223,500 shares $2.07 thousand -2.8%N/A0.6 $0.59
7/15/20223,600 shares $2.12 thousand -26.5%N/A0.5 $0.59
6/30/20224,900 shares $2.77 thousand -3.9%N/A0.6 $0.57
6/15/20225,100 shares $3.21 thousand -13.6%N/A0.6 $0.63
5/31/20225,900 shares $0.00 -22.4%N/A0.7 $0.00

QSIAW Short Interest - Frequently Asked Questions

Short interest is the volume of Quantum-Si shares that have been sold short but have not yet been closed out or covered. As of April 30th, investors have sold 5,502 shares of QSIAW short. Learn More on Quantum-Si's 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. QSIAW shares currently have a short interest ratio of 0.5. Learn More on Quantum-Si's short interest ratio.

Quantum-Si saw a increase in short interest in the month of April. As of April 30th, there was short interest totaling 5,502 shares, an increase of 43.8% from the previous total of 3,825 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.

Here is how the short interest of companies in the industry of "measuring and control equipment" compare to Quantum-Si: Trane Technologies plc (1.69%), Keysight Technologies Inc. (1.27%), Teradyne, Inc. (3.46%), Veralto Corporation (2.12%), Fortive Corporation (4.37%), Nova Ltd. (4.84%), Revvity Inc. (7.93%), Camtek Ltd. (31.93%), Sensata Technologies Holding N.V. (4.76%), Ralliant Corporation (5.39%),

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 QSIAW is an investing strategy that aims to generate trading profit from Quantum-Si as its price is falling. QSIAW shares are trading up $0.00 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 Quantum-Si 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 QSIAW, 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 QSIAW, 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 QSIAW:

  • 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:QSIAW) was last updated on 5/20/2026 by MarketBeat.com Staff.
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