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Repare Therapeutics (RPTX) Short Interest Ratio & Short Volume

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Repare Therapeutics Short Interest Overview

As of January 15, 2026, Repare Therapeutics (RPTX) had a short interest of 437,896 shares sold short, representing 1.15% of the public float. This marks a 125.33% increase in short interest since the prior report. The short interest ratio (days to cover) is 0.4, meaning it would take 0.4 days of the average trading volume of 516,093 shares to cover all short positions.

Current Short Interest
437,896 shares
Previous Short Interest
194,336 shares
Change Vs. Previous Month
125.33%
Dollar Volume Sold Short
$1.13 million
Short Interest Ratio
0.4 Days to Cover
Last Record Date
January 15, 2026
Outstanding Shares
43,108,000 shares
Short Percent of Float
1.15%
Today's Trading Volume
1,219,900 shares
Average Trading Volume
516,093 shares
Today's Volume Vs. Average
236%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

RPTX Short Interest Over Time

RPTX Days to Cover Over Time

RPTX Percentage of Float Shorted Over Time

Repare Therapeutics 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
1/15/2026437,896 shares $1.13 million +125.3%1.1%0.44 $2.57
12/31/2025194,336 shares $505.27 thousand -44.9%0.5%0.11 $2.60
12/15/2025352,361 shares $775.19 thousand +2.2%0.9%0.64 $2.20
11/28/2025344,773 shares $751.61 thousand -35.4%0.9%0.18 $2.18
11/14/2025533,637 shares $880.50 thousand -1.0%1.4%1.18 $1.65
10/31/2025538,858 shares $991.50 thousand -13.2%1.4%2.64 $1.84
10/15/2025620,800 shares $1.18 million +1.8%2.0%5.1 $1.90
9/30/2025610,000 shares $1.07 million -5.3%2.0%2.1 $1.76
9/15/2025644,300 shares $1.14 million +5.2%2.1%2.3 $1.77
8/31/2025612,700 shares $1.02 million -3.4%2.0%2.2 $1.67
8/15/2025634,200 shares $995.69 thousand -7.5%2.1%2.2 $1.57
7/31/2025685,500 shares $1.04 million +22.1%2.2%2.3 $1.51
7/15/2025561,400 shares $802.80 thousand -11.0%1.8%1.6 $1.43
6/30/2025631,000 shares $877.09 thousand +6.3%2.1%2.5 $1.39
6/15/2025593,500 shares $870.66 thousand +5.6%1.9%2.1 $1.47
5/31/2025562,100 shares $781.32 thousand +1.3%1.8%1.9 $1.39
5/15/2025555,100 shares $738.28 thousand +9.0%1.8%1.8 $1.33
4/30/2025509,200 shares $697.60 thousand -26.7%1.7%1.7 $1.37
4/15/2025694,200 shares $763.62 thousand -12.8%2.3%2.3 $1.10
3/31/2025795,900 shares $784.68 thousand -20.4%2.6%3 $0.99
3/15/20251,000,000 shares $1.10 million -5.7%3.3%3 $1.10
2/28/20251,060,000 shares $1.25 million -1.9%3.5%2.3 $1.18
2/15/20251,080,000 shares $1.37 million +0.9%3.5%2.4 $1.27
1/31/20251,070,000 shares $1.31 million -5.3%3.5%2.4 $1.22
1/15/20251,130,000 shares $1.45 million -13.1%3.7%2.7 $1.28
12/31/20241,300,000 shares $1.70 million +53.3%4.3%3.4 $1.31
12/15/2024847,800 shares $1.50 million +47.1%2.9%2.8 $1.77
11/30/2024576,500 shares $1.89 million -5.5%2.0%4.6 $3.28
11/15/2024609,900 shares $1.90 million -18.7%2.1%5.3 $3.11
10/31/2024749,700 shares $2.51 million +4.6%2.6%7.3 $3.35
10/15/2024717,000 shares $2.41 million +0.7%2.5%6.8 $3.36
9/30/2024712,300 shares $2.45 million -3.6%2.5%5.8 $3.44
9/15/2024738,900 shares $2.61 million +2.4%2.6%6.3 $3.53
8/31/2024721,300 shares $2.10 million -2.8%2.5%6.1 $2.91
8/15/2024741,700 shares $2.23 million -0.8%2.6%5.2 $3.00
7/31/2024747,500 shares $2.80 million -16.9%2.6%3 $3.74
7/15/2024900,000 shares $3.24 million +4.0%3.1%3.6 $3.60
6/30/2024865,200 shares $2.86 million +51.1%3.0%3.6 $3.30
6/15/2024572,600 shares $2.18 million +17.8%2.0%2.3 $3.80
5/31/2024485,900 shares $1.69 million -7.3%1.7%2.1 $3.48
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5/15/2024524,300 shares $1.87 million -23.2%1.8%2.5 $3.57
4/30/2024682,500 shares $2.12 million +12.2%2.4%3.5 $3.10
4/15/2024608,300 shares $2.11 million -10.7%2.1%4.7 $3.47
3/31/2024681,000 shares $3.21 million +3.4%2.4%4.6 $4.71
3/15/2024658,600 shares $3.48 million -11.4%2.3%4.2 $5.29
2/29/2024743,300 shares $5.17 million -8.5%2.6%3.7 $6.95
2/15/2024812,500 shares $5.65 million -52.8%2.8%3.6 $6.95
1/31/20241,720,000 shares $11.25 million -20.0%5.4%5.7 $6.54
1/15/20242,150,000 shares $14.06 million -2.7%6.8%6 $6.54
12/31/20232,210,000 shares $16.13 million -12.3%7.0%5.9 $7.30
12/15/20232,520,000 shares $17.01 million -7.4%7.9%6.9 $6.75
11/30/20232,720,000 shares $14.01 million +25.9%8.6%7.8 $5.15
11/15/20232,160,000 shares $11.43 million +24.1%6.8%6.9 $5.29
10/31/20231,740,000 shares $5.92 million +10.8%5.5%7.4 $3.40
10/15/20231,570,000 shares $8.29 million +23.6%4.9%9.9 $5.28
9/30/20231,270,000 shares $15.34 million +1.6%4.0%10.8 $12.08
9/15/20231,250,000 shares $12.90 million +4.2%3.9%12.3 $10.32
8/31/20231,200,000 shares $11.71 million -3.2%3.8%12.5 $9.76
8/15/20231,240,000 shares $12.05 million +0.8%3.9%12.1 $9.72
7/31/20231,230,000 shares $11.32 million -5.4%3.9%12.6 $9.20
7/15/20231,300,000 shares $14.14 million +2.4%4.1%13.7 $10.88
6/30/20231,270,000 shares $13.44 million -5.9%4.0%12.4 $10.58
6/15/20231,350,000 shares $16.67 million +7.1%4.3%13 $12.35
5/31/20231,260,000 shares $13.37 million -2.3%4.0%12.2 $10.61
5/15/20231,290,000 shares $13.08 million -4.4%4.1%12.8 $10.14
4/30/20231,350,000 shares $12.10 million -12.9%4.3%12 $8.96
4/15/20231,550,000 shares $14.06 million -8.3%5.0%12.6 $9.07
3/31/20231,690,000 shares $16.63 million +1.2%5.4%13.4 $9.84
3/15/20231,670,000 shares $16.60 million +6.4%5.4%11.6 $9.94
2/28/20231,570,000 shares $16.09 million +4.0%5.1%9.7 $10.25
2/15/20231,510,000 shares $17.41 million +4.9%4.9%9.2 $11.53
1/31/20231,440,000 shares $17.80 million -7.1%4.7%7.7 $12.36
1/15/20231,550,000 shares $19.92 million +22.1%5.0%8.8 $12.85
12/30/20221,270,000 shares $18.68 million +64.2%4.1%7.5 $14.71
12/15/2022773,300 shares $11.55 million -39.6%2.5%4.9 $14.93
11/30/20221,280,000 shares $20.52 million -18.0%4.2%8.9 $16.03
11/15/20221,560,000 shares $26.69 million +0.7%5.1%11.7 $17.11
10/31/20221,550,000 shares $23.34 million -1.9%5.1%12.6 $15.06
10/15/20221,580,000 shares $21.09 million -1.9%5.2%10.8 $13.35
9/30/20221,610,000 shares $19.53 million +4.6%5.3%10.5 $12.13
9/15/20221,540,000 shares $20.14 million -4.4%5.0%9.1 $13.08
8/31/20221,610,000 shares $19.19 million +5.2%5.3%7.9 $11.92
8/15/20221,530,000 shares $18.74 million -26.1%5.0%1.8 $12.25
7/31/20222,070,000 shares $26.16 million -1.0%6.8%2.5 $12.64
7/15/20222,090,000 shares $30.45 million +2.0%6.8%2.5 $14.57
6/30/20222,050,000 shares $28.68 million -15.6%6.7%2.4 $13.99
6/15/20222,430,000 shares $32.73 million +30.7%8.0%2.9 $13.47
5/31/20221,860,000 shares $17.07 million -4.6%6.4%2.3 $9.18
5/15/20221,950,000 shares $17.08 million -24.7%6.7%11.6 $8.76
4/30/20222,590,000 shares $28.49 million -12.8%8.9%15.8 $11.00
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4/15/20222,970,000 shares $34.07 million +0.3%10.2%17.1 $11.47
3/31/20222,960,000 shares $42.15 million +6.1%10.2%17.2 $14.24
3/15/20222,790,000 shares $33.81 million -0.4%9.6%16.7 $12.12
2/28/20222,800,000 shares $45.00 million +3.7%9.7%16.3 $16.07
2/15/20222,700,000 shares $40.37 million +1.9%9.4%14.7 $14.95
1/31/20222,650,000 shares $40.89 million +4.3%9.1%14.9 $15.43
1/15/20222,540,000 shares $38.68 million +2.0%8.8%13.1 $15.23
12/31/20212,490,000 shares $52.51 million -2.7%9.8%12.3 $21.09
12/15/20212,560,000 shares $52.86 million +4.1%10.1%10.4 $20.65
11/30/20212,460,000 shares $57.74 million +6.0%9.8%9.8 $23.47
11/15/20212,320,000 shares $62.73 million +6.9%9.2%9.8 $27.04
10/29/20212,170,000 shares $54.27 million +26.9%9.6%9.6 $25.01
10/15/20211,710,000 shares $37.72 million +131.6%8.5%8.7 $22.06
9/30/2021738,500 shares $19.38 million -12.0%3.7%4 $26.24
9/15/2021838,700 shares $25.83 million -7.1%4.2%6.8 $30.80
8/31/2021903,000 shares $30.70 million -7.1%4.5%6.9 $34.00
8/13/2021972,400 shares $33.17 million +3.0%4.9%7.3 $34.11
7/30/2021943,900 shares $31.53 million +45.8%4.8%6.4 $33.40
7/15/2021647,500 shares $18.96 million -8.8%2.8%4.3 $29.28
6/30/2021709,600 shares $22.13 million -2.5%3.1%5 $31.18
6/15/2021728,100 shares $23.05 million -5.0%3.2%5.1 $31.66
5/28/2021766,500 shares $24.77 million -3.3%3.3%5.2 $32.32
5/14/2021792,600 shares $24.72 million +4.2%3.2%5.3 $31.19

RPTX Short Interest - Frequently Asked Questions

Short interest is the volume of Repare Therapeutics shares that have been sold short but have not yet been closed out or covered. As of January 15th, investors have sold 437,896 shares of RPTX short. 1.15% of Repare Therapeutics' shares are currently sold short. Learn More on Repare Therapeutics' 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. RPTX shares currently have a short interest ratio of 0.4. Learn More on Repare Therapeutics's short interest ratio.

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Repare Therapeutics: Equitec Proprietary Markets LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

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. 1.15% of Repare Therapeutics' floating shares are currently sold short.

Repare Therapeutics saw a increase in short interest in January. As of January 15th, there was short interest totaling 437,896 shares, an increase of 125.3% from the previous total of 194,336 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.

1.15% of Repare Therapeutics' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Repare Therapeutics: Canopy Growth Corporation (6.33%), Zura Bio Limited (9.44%), Enanta Pharmaceuticals, Inc. (8.39%), Eupraxia Pharmaceuticals Inc. (5.09%), Lyell Immunopharma, Inc. (6.14%), ADC Therapeutics SA (4.55%), Monopar Therapeutics Inc. (31.37%), AgomAb Therapeutics NV (2.08%), Atea Pharmaceuticals, Inc. (11.43%), Invivyd, Inc. (11.79%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($74.34 billion), Invesco QQQ ($28.05 billion), iShares Russell 2000 ETF ($21.35 billion), iShares 20+ Year Treasury Bond ETF ($11.58 billion), SPDR S&P Biotech ETF ($9.97 billion), Palo Alto Networks, Inc. ($8.96 billion), Carvana Co. ($7.68 billion), Western Digital Corporation ($7.44 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.01 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($6.60 billion). View all of the most shorted stocks.

Short selling RPTX is an investing strategy that aims to generate trading profit from Repare Therapeutics as its price is falling. RPTX 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.

A short squeeze for Repare Therapeutics 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 RPTX, 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 RPTX, twice per month. The most recent reporting period available is January, 15 2026.

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

  • 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:RPTX) was last updated on 5/14/2026 by MarketBeat.com Staff.
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