City Office REIT (CIO) Short Interest Ratio & Short Volume $6.94 +0.02 (+0.22%) Closing price 03:59 PM EasternExtended Trading$6.93 0.00 (-0.07%) As of 05:05 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 Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock City Office REIT Short Interest DataCity Office REIT (CIO) has a short interest of 376,000 shares, representing 0.97% of the float (the number of shares available for trading by the public). This marks a -7.14% decrease in short interest from the previous month. The short interest ratio (days to cover) is 0.9, indicating that it would take 0.9 days of the average trading volume of 291,918 shares to cover all short positions.Current Short Interest376,000 sharesPrevious Short Interest404,900 sharesChange Vs. Previous Month-7.14%Dollar Volume Sold Short$2.61 millionShort Interest Ratio0.9 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares40,360,000 sharesFloat Size38,620,000 sharesShort Percent of Float0.97%Today's Trading Volume276,078 sharesAverage Trading Volume291,918 sharesToday's Volume Vs. Average95% Short Selling City Office REIT? Sign up to receive the latest short interest report for City Office REIT and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartCIO Short Interest Over TimeCIO Days to Cover Over TimeCIO Percentage of Float Shorted Over Time City Office REIT Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/31/2025376,000 shares $2.61 million -7.1%1.0%0.9 $6.94 7/15/2025404,900 shares $2.28 million +4.0%1.1%1.3 $5.63 6/30/2025389,500 shares $2.09 million +7.6%1.0%2.3 $5.36 6/15/2025361,900 shares $1.95 million -1.3%0.9%2.1 $5.39 5/31/2025366,500 shares $1.80 million -8.4%1.0%2 $4.90 5/15/2025400,200 shares $1.99 million -9.4%1.0%2.1 $4.97 4/30/2025441,900 shares $2.26 million +47.2%1.2%2.4 $5.12 4/15/2025300,300 shares $1.37 million -8.9%0.8%1.7 $4.57 3/31/2025329,500 shares $1.71 million +2.2%0.9%1.9 $5.20 3/15/2025322,300 shares $1.63 million +6.6%0.8%1.9 $5.06 Get the Latest News and Ratings for CIO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for City Office REIT and its competitors with MarketBeat's FREE daily newsletter. 2/28/2025302,300 shares $1.59 million +8.4%0.8%1.7 $5.27 2/15/2025278,800 shares $1.40 million +1.5%0.7%1.2 $5.03 1/31/2025274,600 shares $1.45 million +2.3%0.7%1.1 $5.29 1/15/2025268,400 shares $1.41 million +13.4%0.7%1 $5.27 12/31/2024236,600 shares $1.31 million -13.8%0.6%0.9 $5.52 12/15/2024274,600 shares $1.61 million +1.8%0.7%1 $5.85 11/30/2024269,700 shares $1.56 million -25.4%0.7%1 $5.80 11/15/2024361,300 shares $1.77 million +31.2%0.9%1.4 $4.89 10/31/2024275,400 shares $1.41 million -10.0%0.7%1.5 $5.13 10/15/2024306,000 shares $1.74 million +11.5%0.8%1.7 $5.67 9/30/2024274,500 shares $1.61 million -6.8%0.7%1.5 $5.85 9/15/2024294,600 shares $1.82 million -7.0%0.8%1.7 $6.19 8/31/2024316,800 shares $1.86 million +4.2%0.8%1.9 $5.88 8/15/2024304,100 shares $1.65 million -7.5%0.8%1.8 $5.42 7/31/2024328,600 shares $1.99 million +0.4%0.9%1.8 $6.05 7/15/2024327,300 shares $1.70 million -9.9%0.9%1.9 $5.20 6/30/2024363,100 shares $1.81 million +6.7%0.9%2.2 $4.98 6/15/2024340,200 shares $1.67 million +4.7%0.9%1.9 $4.91 5/31/2024324,800 shares $1.60 million -12.4%0.8%1.6 $4.93 5/15/2024370,700 shares $1.92 million -7.6%1.0%1.6 $5.17 4/30/2024401,100 shares $1.87 million -1.4%1.0%1.7 $4.66 4/15/2024406,700 shares $1.80 million +5.9%1.1%1.6 $4.42 3/31/2024384,200 shares $2.00 million -11.5%1.0%1.4 $5.21 3/15/2024434,200 shares $1.82 million -7.4%1.1%1.5 $4.20 2/29/2024469,000 shares $2.15 million +25.5%1.2%1.6 $4.58 2/15/2024373,700 shares $1.79 million +3.2%1.0%1.3 $4.79 1/31/2024362,300 shares $1.90 million -11.5%0.9%1.3 $5.26 1/15/2024409,300 shares $2.56 million +28.1%1.1%1.3 $6.25 12/31/2023319,500 shares $1.95 million -4.4%0.8%1 $6.11 12/15/2023334,300 shares $2.10 million -1.6%0.9%1 $6.29Cover all your expenses with just $118,000 invested? (Ad)Generate up to $5,000/month with 10X less money? That's what every financial advisor tells you. But I just discovered a new way to do it with 10X less money.Start collecting this income (next payout coming soon) 11/30/2023339,600 shares $1.64 million -7.9%0.9%1.1 $4.83 11/15/2023368,800 shares $1.72 million -34.7%1.0%1.1 $4.66 10/31/2023564,700 shares $2.15 million +0.1%1.5%1.7 $3.81 10/15/2023564,100 shares $2.12 million +19.3%1.5%1.7 $3.76 9/30/2023472,700 shares $2.01 million +14.0%1.2%1.4 $4.25 9/15/2023414,800 shares $2.02 million -3.5%1.1%1.3 $4.87 8/31/2023429,800 shares $2.17 million -1.0%1.1%1.2 $5.04 8/15/2023434,200 shares $2.11 million +10.8%1.1%1 $4.87 7/31/2023392,000 shares $2.14 million -42.2%1.0%0.7 $5.47 7/15/2023677,600 shares $3.86 million -13.1%1.8%1.2 $5.69 6/30/2023779,600 shares $4.34 million +6.2%2.0%1.4 $5.57 6/15/2023734,300 shares $4.05 million -24.7%1.9%1.3 $5.52 5/31/2023975,500 shares $4.43 million +25.6%2.5%1.7 $4.55 5/15/2023776,700 shares $3.33 million +16.0%2.0%1.6 $4.29 4/30/2023669,800 shares $3.90 million +18.9%1.7%1.9 $5.82 4/15/2023563,300 shares $3.43 million +9.9%1.5%1.7 $6.09 3/31/2023512,800 shares $3.54 million +4.4%1.3%1.5 $6.90 3/15/2023491,200 shares $3.56 million -9.3%1.3%1.5 $7.24 2/28/2023541,300 shares $4.58 million +5.5%1.4%1.8 $8.46 2/15/2023513,100 shares $4.89 million -1.9%1.3%1.8 $9.53 1/31/2023523,000 shares $5.15 million +7.0%1.4%1.7 $9.84 1/15/2023488,900 shares $4.59 million +9.7%1.3%1.6 $9.38 12/30/2022445,800 shares $3.74 million -10.7%1.2%1.6 $8.38 12/15/2022499,100 shares $4.56 million +5.1%1.3%1.7 $9.14 11/30/2022474,900 shares $4.70 million -22.3%1.2%1.7 $9.89 11/15/2022611,000 shares $5.99 million -22.5%1.6%2 $9.80 10/31/2022788,500 shares $8.37 million -20.2%2.0%2.5 $10.62 10/15/2022987,700 shares $9.62 million +29.1%2.5%2.9 $9.74 9/30/2022765,200 shares $7.63 million +13.2%1.9%2.2 $9.97 9/15/2022676,000 shares $7.59 million -5.9%1.7%2 $11.23 8/31/2022718,000 shares $8.29 million -4.2%1.8%2.1 $11.55 8/15/2022749,200 shares $9.87 million -9.2%1.9%2.3 $13.18 7/31/2022825,300 shares $11.64 million -9.5%2.0%2.5 $14.10 7/15/2022912,300 shares $11.95 million +15.3%2.2%2.9 $13.10 6/30/2022791,100 shares $10.24 million +17.7%1.9%2.6 $12.95 6/15/2022672,200 shares $7.86 million +1.5%1.6%2.4 $11.70 5/31/2022662,600 shares $9.24 million +8.5%1.6%2.5 $13.94 5/15/2022610,500 shares $8.00 million +17.9%1.4%2.2 $13.11 4/30/2022517,800 shares $7.68 million +16.3%1.2%2 $14.84 4/15/2022445,400 shares $7.20 million -10.4%1.1%1.6 $16.16 3/31/2022497,200 shares $8.78 million -1.1%1.2%1.7 $17.66 3/15/2022502,800 shares $8.46 million -10.1%1.2%1.6 $16.82 2/28/2022559,500 shares $9.63 million +35.9%1.3%1.6 $17.22 2/15/2022411,600 shares $7.41 million +78.5%1.0%1.2 $18.01 1/31/2022230,600 shares $4.11 million -36.6%0.5%0.7 $17.83 1/15/2022363,500 shares $7.27 million +23.4%0.9%1 $20.00 12/31/2021294,500 shares $5.81 million -41.6%0.7%0.8 $19.72 12/15/2021504,500 shares $8.98 million +185.0%1.2%1.5 $17.80 11/30/2021177,000 shares $2.95 million -6.7%0.4%0.5 $16.68 11/15/2021189,800 shares $3.57 million -63.5%0.5%0.4 $18.82Cover all your expenses with just $118,000 invested? (Ad)Generate up to $5,000/month with 10X less money? That's what every financial advisor tells you. But I just discovered a new way to do it with 10X less money.Start collecting this income (next payout coming soon) 10/29/2021519,900 shares $9.86 million -16.4%1.2%1 $18.97 10/15/2021621,500 shares $11.65 million -20.9%1.5%1.3 $18.74 9/30/2021786,100 shares $14.04 million -19.4%1.9%1.7 $17.86 9/15/2021975,300 shares $16.34 million +115.7%2.3%2.2 $16.75 8/31/2021452,100 shares $7.22 million +57.5%1.1%1.3 $15.97 8/13/2021287,000 shares $3.79 million +6.9%0.7%1.1 $13.22 7/30/2021268,500 shares $3.46 million -17.8%0.6%1.4 $12.87 7/15/2021326,500 shares $4.06 million -8.6%0.8%1.8 $12.42 6/30/2021357,200 shares $4.44 million -25.7%0.9%2 $12.43 6/15/2021480,800 shares $6.11 million -14.3%1.1%2.4 $12.71 5/28/2021561,100 shares $6.49 million +12.7%1.3%2.6 $11.56 5/14/2021497,700 shares $5.41 million +21.9%N/A2.1 $10.87 4/30/2021408,200 shares $4.47 million -18.6%N/A1.7 $10.95 4/15/2021501,400 shares $5.48 million +24.2%N/A2.1 $10.93 3/31/2021403,800 shares $4.24 million -28.4%N/A1.5 $10.51 3/15/2021564,000 shares $6.43 million +9.3%N/A2.1 $11.40 2/26/2021515,800 shares $5.53 million -14.9%N/A2 $10.72 2/12/2021606,300 shares $6.28 million +27.4%N/A2.3 $10.36 1/29/2021476,000 shares $4.56 million -12.0%N/A1.7 $9.59 1/15/2021541,000 shares $5.25 million +10.3%N/A1.8 $9.70 12/31/2020490,300 shares $4.73 million +8.7%N/A1.7 $9.65 12/15/2020451,100 shares $4.35 million -1.5%N/A1.5 $9.65 11/30/2020458,000 shares $4.16 million -12.8%N/A1.4 $9.08 11/15/2020525,500 shares $4.13 million -20.0%N/A1.6 $7.85 10/30/2020656,700 shares $4.27 million -6.8%N/A2 $6.50 10/15/2020704,800 shares $5.07 million +2.5%N/A2.2 $7.20 9/30/2020687,800 shares $5.17 million -6.2%N/A2.1 $7.52 9/15/2020733,600 shares $5.75 million +9.6%N/A2 $7.84 8/31/2020669,600 shares $5.38 million -22.9%N/A1.8 $8.04 CIO Short Interest - Frequently Asked Questions What is City Office REIT's current short interest? Short interest is the volume of City Office REIT shares that have been sold short but have not yet been closed out or covered. As of July 31st, investors have sold 376,000 shares of CIO short. 0.97% of City Office REIT's shares are currently sold short. Learn More on City Office REIT's current short interest. What is a good short interest ratio for City Office REIT? 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. CIO shares currently have a short interest ratio of 1.0. Learn More on City Office REIT's short interest ratio. Which institutional investors are shorting City Office REIT? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of City Office REIT: Simplex Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for City Office REIT? 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. 0.97% of City Office REIT's floating shares are currently sold short. Is City Office REIT's short interest increasing or decreasing? City Office REIT saw a decrease in short interest during the month of July. As of July 31st, there was short interest totaling 376,000 shares, a decrease of 7.1% from the previous total of 404,900 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. What is City Office REIT's float size? City Office REIT currently has issued a total of 40,360,000 shares. Some of City Office REIT's outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. City Office REIT currently has a public float of 38,620,000 shares. How does City Office REIT's short interest compare to its competitors? 0.97% of City Office REIT's shares are currently sold short. Here is how the short interest of companies compare to City Office REIT: BXP, Inc. (6.05%), Cousins Properties Incorporated (4.45%), Douglas Emmett, Inc. (13.80%), Highwoods Properties, Inc. (5.48%), Kilroy Realty Corporation (11.95%), Piedmont Realty Trust, Inc. (2.28%), Sabine Royalty Trust (0.70%), Safehold Inc. (7.13%), Easterly Government Properties, Inc. (3.92%), Uniti Group Inc. (4.46%), 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 ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), Strategy Inc ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 billion). View all of the most shorted stocks. What does it mean to sell short City Office REIT stock? Short selling CIO is an investing strategy that aims to generate trading profit from City Office REIT as its price is falling. CIO shares are trading up $0.02 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. How does a short squeeze work against City Office REIT? A short squeeze for City Office REIT 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 CIO, which in turn drives the price of the stock up even further. How often is City Office REIT'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 CIO, twice per month. The most recent reporting period available is July, 31 2025. More Short Interest Resources from MarketBeat Related Companies BXP Short Interest Cousins Properties Short Interest Douglas Emmett Short Interest Highwoods Properties Short Interest Kilroy Realty Short Interest Piedmont Realty Trust Short Interest Sabine Royalty Trust Short Interest Safehold Short Interest Easterly Government Properties Short Interest Uniti Group Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NYSE:CIO) was last updated on 8/22/2025 by MarketBeat.com Staff From Our PartnersGENIUS Act: Cancel Your Money?A new law called the GENIUS Act could quietly trigger the most radical shift in American finance in decades. B...Priority Gold | SponsoredEveryone’s watching Nvidia right now. 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