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Calamos S&P 500 Structured Alt Protection ETF - August (CPSA) Short Interest Ratio & Short Volume

$27.51 +0.07 (+0.26%)
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Calamos S&P 500 Structured Alt Protection ETF - August Short Interest Overview

As of December 31, 2025, Calamos S&P 500 Structured Alt Protection ETF - August (CPSA) had a short interest of 3,664 shares sold short, representing 0.22% of the public float. This marks a 1,208.57% increase in short interest since the prior report. The short interest ratio (days to cover) is 1.3, meaning it would take 1.3 days of the average trading volume of 2,970 shares to cover all short positions.

Current Short Interest
3,664 shares
Previous Short Interest
280 shares
Change Vs. Previous Month
1,208.57%
Dollar Volume Sold Short
$98.67 thousand
Short Interest Ratio
1.3 Days to Cover
Last Record Date
December 31, 2025
Outstanding Shares
1,600,000 shares
Short Percent of Float
0.22%
Today's Trading Volume
674 shares
Average Trading Volume
2,970 shares
Today's Volume Vs. Average
23%
Short Selling Calamos S&P 500 Structured Alt Protection ETF - August?
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Skip Charts & View Short Interest History

CPSA Short Interest Over Time

CPSA Days to Cover Over Time

CPSA Percentage of Float Shorted Over Time

Calamos S&P 500 Structured Alt Protection ETF - August Tesla Short Interest History & Recent Changes

Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
12/31/20253,664 shares $98.67 thousand +1,208.6%0.2%1.27 $26.93
12/15/2025280 shares $7.52 thousand -49.7%0.0%0.09 $26.87
11/28/2025557 shares $14.97 thousand No Change0.0%0.2 $26.87
11/14/2025557 shares $14.87 thousand -85.8%0.0%0.22 $26.70
10/31/20253,923 shares $104.94 thousand -66.6%0.2%1.34 $26.75
10/15/202511,700 shares $311.81 thousand -51.5%0.7%1 $26.65
9/30/202524,100 shares $642.02 thousand -24.7%N/A2 $26.64
9/15/202532,000 shares $850.24 thousand +2.2%N/A2.7 $26.57
8/31/202531,300 shares $827.26 thousand No Change2.2%2.6 $26.43

CPSA Short Interest - Frequently Asked Questions

What is Calamos S&P 500 Structured Alt Protection ETF - August's current short interest?

Short interest is the volume of Calamos S&P 500 Structured Alt Protection ETF - August shares that have been sold short but have not yet been covered or closed out. As of December 31st, investors have sold 3,664 shares of CPSA short. 0.22% of Calamos S&P 500 Structured Alt Protection ETF - August's shares are currently sold short. Learn More on Calamos S&P 500 Structured Alt Protection ETF - August's current short interest.

What is a good short interest ratio for Calamos S&P 500 Structured Alt Protection ETF - August?

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. CPSA shares currently have a short interest ratio of 1.3. Learn More on Calamos S&P 500 Structured Alt Protection ETF - August's short interest ratio.

What is a good short interest percentage for Calamos S&P 500 Structured Alt Protection ETF - August?

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. 0.22% of Calamos S&P 500 Structured Alt Protection ETF - August's floating shares are currently sold short.

Is Calamos S&P 500 Structured Alt Protection ETF - August's short interest increasing or decreasing?

Calamos S&P 500 Structured Alt Protection ETF - August saw a increase in short interest in December. As of December 31st, there was short interest totaling 3,664 shares, an increase of 1,208.6% from the previous total of 280 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.

How does Calamos S&P 500 Structured Alt Protection ETF - August's short interest compare to its competitors?

0.22% of Calamos S&P 500 Structured Alt Protection ETF - August's shares are currently sold short. Here is how the short interest of companies compare to Calamos S&P 500 Structured Alt Protection ETF - August: AllianzIM U.S. Large Cap 6 Month Buffer10 Feb/Aug ETF (7.90%), NestYield Total Return Guard ETF (1.05%), Touchstone International Equity ETF (0.26%), AllianzIM Buffer20 Allocation ETF (2.64%), ETRACS IFED Invest with the Fed TR Index ETN (0.09%), SoFi Social 50 ETF (0.60%), AllianzIM U.S. Large Cap 6 Month Buffer10 Jun/Dec ETF (1.17%), ProShares S&P 500 EX-Health Care ETF (0.22%), Hartford US Quality Growth ETF (0.30%), Global X S&P 500 Risk Managed Income ETF (1.10%),

Which stocks are the most shorted right now?

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($68.76 billion), Invesco QQQ ($26.44 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($12.46 billion), AppLovin Corporation ($10.57 billion), SPDR S&P Biotech ETF ($9.48 billion), Palo Alto Networks, Inc. ($8.67 billion), Carvana Co. ($6.81 billion), Western Digital Corporation ($6.35 billion), and iShares MSCI Emerging Markets ETF ($6.03 billion). View all of the most shorted stocks.

What does it mean to sell short Calamos S&P 500 Structured Alt Protection ETF - August stock?

Short selling CPSA is an investing strategy that aims to generate trading profit from Calamos S&P 500 Structured Alt Protection ETF - August 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.

How does a short squeeze work against Calamos S&P 500 Structured Alt Protection ETF - August?

A short squeeze for Calamos S&P 500 Structured Alt Protection ETF - August 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 CPSA, which in turn drives the price of the stock up even further.

How often is Calamos S&P 500 Structured Alt Protection ETF - August's short interest reported?

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including CPSA, twice per month. The most recent reporting period available is December, 31 2025.

What do CPSA's short interest metrics mean?

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

  • 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.




This page (NYSEARCA:CPSA) was last updated on 5/5/2026 by MarketBeat.com Staff.
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