This company has been marked as potentially delisted and may not be actively trading. Castlight Health (CSLT) Short Interest Ratio & Short Volume Add Compare Share Share Short Interest Stock AnalysisBuy This Stock Castlight Health Short Interest DataCastlight Health (CSLT) has a short interest of 100 shares. This marks a -100.00% decrease in short interest from the previous month. The short interest ratio (days to cover) is 0.0, indicating that it would take 0.0 days of the average trading volume of 0 shares to cover all short positions.Current Short Interest100 sharesPrevious Short Interest2,450,000 sharesChange Vs. Previous Month-100.00%Dollar Volume Sold Short$204.00Short Interest Ratio0.0 Days to CoverLast Record DateFebruary 15, 2022Outstanding Shares129,520,000 sharesPercentage of Shares Shorted∞Today's Trading Volume0 sharesAverage Trading Volume0 sharesToday's Volume Vs. AverageNaN Short Selling Castlight Health? 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Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartCSLT Short Interest Over TimeCSLT Days to Cover Over TimeCSLT Percentage of Float Shorted Over Time Castlight Health Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 2/15/2022100 shares $204.00 -100.0%N/A0 $2.04 1/31/20222,450,000 shares $5.00 million -12.2%2.0%1 $2.04 1/15/20222,790,000 shares $5.69 million -6.4%2.3%1.1 $2.04 12/31/20212,980,000 shares $4.59 million -5.7%2.5%1.4 $1.54 12/15/20213,160,000 shares $4.61 million -6.2%2.6%4.5 $1.46 11/30/20213,370,000 shares $5.16 million -11.8%2.8%4.9 $1.53 11/15/20213,820,000 shares $7.03 million -20.1%3.2%5.2 $1.84 10/29/20214,780,000 shares $8.60 million -7.2%4.0%6.8 $1.80 10/15/20215,150,000 shares $8.65 million -4.6%4.3%7.7 $1.68 9/30/20215,400,000 shares $8.48 million -8.8%4.5%6.6 $1.57 Get the Latest News and Ratings for CSLT and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Castlight Health and its competitors with MarketBeat's FREE daily newsletter. 9/15/20215,920,000 shares $9.83 million -2.3%5.0%4.1 $1.66 8/31/20216,060,000 shares $10.97 million +0.2%5.1%3.9 $1.81 8/13/20216,050,000 shares $11.25 million -0.3%5.1%3.6 $1.86 7/30/20216,070,000 shares $14.14 million +1.5%5.2%3.5 $2.33 7/15/20215,980,000 shares $13.22 million +13.7%5.1%3.4 $2.21 6/30/20215,260,000 shares $13.83 million +124.8%4.5%3.1 $2.63 6/15/20212,340,000 shares $5.01 million +7.3%2.0%2.1 $2.14 5/28/20212,180,000 shares $3.97 million +13.0%1.9%2.1 $1.82 5/14/20211,930,000 shares $3.40 million -3.5%N/A1.7 $1.76 4/30/20212,000,000 shares $3.50 million -10.3%N/A1.6 $1.75 4/15/20212,230,000 shares $3.72 million +4.2%N/A1.7 $1.67 3/31/20212,140,000 shares $3.12 million -4.0%N/A1.6 $1.46 3/15/20212,230,000 shares $4.24 million -3.0%N/A1.7 $1.90 2/26/20212,300,000 shares $3.98 million +21.1%N/A1.8 $1.73 2/12/20211,900,000 shares $3.65 million +11.1%1.8%1.9 $1.92 1/29/20211,710,000 shares $2.75 million -9.0%1.6%1.9 $1.61 1/15/20211,880,000 shares $3.08 million +16.8%N/A2.7 $1.64 12/31/20201,610,000 shares $2.19 million -1.2%N/A3 $1.36 12/15/20201,630,000 shares $2.07 million +6.5%N/A3.7 $1.27 11/30/20201,530,000 shares $1.85 million -5.6%N/A3.7 $1.21 11/15/20201,620,000 shares $1.83 million +1.9%N/A3.9 $1.13 10/30/20201,590,000 shares $1.49 million +1.3%1.7%3.5 $0.94 10/15/20201,570,000 shares $1.63 million -11.8%1.7%2.1 $1.04 9/30/20201,780,000 shares $2.01 million -6.3%2.1%1.7 $1.13 9/15/20201,900,000 shares $2.22 million -4.0%2.2%1.5 $1.17 8/31/20201,980,000 shares $2.73 million -4.4%2.3%1.5 $1.38 8/14/20202,070,000 shares $2.42 million -1.0%2.4%1.5 $1.17 7/31/20202,090,000 shares $2.30 million +4.0%2.2%1.4 $1.10 7/15/20202,010,000 shares $1.70 million -24.2%2.2%1.7 $0.85 6/30/20202,650,000 shares $2.15 million -32.7%2.9%2.9 $0.81This picture could hold the secret to the market's next move. (Ad)A strange investment secret — discovered just a few short weeks before this image was taken — correctly predicted it all. Even crazier, this secret accurately called every major financial event in recent history … Now it's signaling something very scary is about to hit the market again …To find out more about this Great Depression secret … Click here for all the details. 6/15/20203,940,000 shares $3.28 million +7.7%4.3%5.2 $0.83 5/29/20203,660,000 shares $2.82 million +4.6%3.9%5 $0.77 5/15/20203,500,000 shares $2.35 million +11.5%3.7%4.8 $0.67 CSLT Short Interest - Frequently Asked Questions What is Castlight Health's current short interest? Short interest is the volume of Castlight Health shares that have been sold short but have not yet been covered or closed out. As of February 15th, traders have sold 100 shares of CSLT short. Learn More on Castlight Health's current short interest. Is Castlight Health's short interest increasing or decreasing? Castlight Health saw a decrease in short interest in the month of February. As of February 15th, there was short interest totaling 100 shares, a decrease of 100.0% from the previous total of 2,450,000 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 Castlight Health's short interest compare to its competitors? Here is how the short interest of companies in the industry of "data processing & preparation" compare to Castlight Health: Automatic Data Processing, Inc. (1.55%), Workday, Inc. (3.24%), Verisk Analytics, Inc. (1.37%), Reddit, Inc. (18.19%), Toast, Inc. (6.29%), Pegasystems Inc. (4.59%), Bilibili Inc. (6.49%), QXO, Inc. (3.27%), Globant S.A. (5.08%), StoneCo Ltd. (12.19%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: S&P Global Inc. ($7.23 billion), Charter Communications, Inc. ($6.03 billion), Palo Alto Networks, Inc. ($3.16 billion), Lucid Group, Inc. ($2.77 billion), Snap Inc. ($2.53 billion), Datadog, Inc. ($2.53 billion), Rivian Automotive, Inc. ($2.30 billion), Wayfair Inc. ($2.30 billion), Booking Holdings Inc. ($2.18 billion), and Carnival Co. & plc ($1.96 billion). View all of the most shorted stocks. What does it mean to sell short Castlight Health stock? Short selling CSLT is an investing strategy that aims to generate trading profit from Castlight Health 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 Castlight Health? A short squeeze for Castlight Health 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 CSLT, which in turn drives the price of the stock up even further. How often is Castlight Health'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 CSLT, twice per month. The most recent reporting period available is February, 15 2022. More Short Interest Resources from MarketBeat Related Companies ADP Short Squeeze WDAY Short Squeeze VRSK Short Squeeze RDDT Short Squeeze TOST Short Squeeze PEGA Short Squeeze BILI Short Squeeze QXO Short Squeeze GLOB Short Squeeze STNE Short Squeeze Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NYSE:CSLT) was last updated on 5/10/2025 by MarketBeat.com Staff From Our PartnersWe’ve Entered the Most Bullish Phase of the CycleIt happens like clockwork. Every four years, the crypto market enters a new phase — and for those who know how...Crypto Swap Profits | SponsoredURGENT: Someone's Moving Gold Out of London...People who don’t understand the gold market are about to lose a lot of money. Unfortunately, most so-called “g...Golden Portfolio | SponsoredTrump wipes out trillions overnight…Is there anybody more powerful than Donald Trump right now? 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A single announcement by July 22nd could soon b...Altimetry | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Castlight Health, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Castlight Health With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. 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