Builders FirstSource (BLDR) Short Interest Ratio & Short Volume $120.61 +0.67 (+0.56%) Closing price 04/11/2025 03:59 PM EasternExtended Trading$118.84 -1.77 (-1.47%) As of 04/11/2025 07:39 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Builders FirstSource Short Interest DataBuilders FirstSource (BLDR) has a short interest of 4.20 million shares, representing 3.78% of the float (the number of shares available for trading by the public). This marks a -14.81% decrease in short interest from the previous month. The short interest ratio (days to cover) is 2.4, indicating that it would take 2.4 days of the average trading volume of 1.68 million shares to cover all short positions.Current Short Interest4,200,000 sharesPrevious Short Interest4,930,000 sharesChange Vs. Previous Month-14.81%Dollar Volume Sold Short$524.84 millionShort Interest Ratio2.4 Days to CoverLast Record DateMarch 31, 2025Outstanding Shares113,743,000 sharesFloat Size111,160,000 sharesShort Percent of Float3.78%Today's Trading Volume1,494,708 sharesAverage Trading Volume1,679,724 sharesToday's Volume Vs. Average89% Short Selling Builders FirstSource? Sign up to receive the latest short interest report for Builders FirstSource and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartBLDR Short Interest Over TimeBLDR Days to Cover Over TimeBLDR Percentage of Float Shorted Over Time Remove Ads Builders FirstSource Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 3/31/20254,200,000 shares $524.84 million -14.8%3.8%2.4 $124.96 3/15/20254,930,000 shares $622.15 million +18.8%4.4%2.8 $126.20 2/28/20254,150,000 shares $576.97 million +20.3%3.7%2.5 $139.03 2/15/20253,450,000 shares $530.96 million -14.4%3.1%2.2 $153.90 1/31/20254,030,000 shares $674.16 million +15.5%3.6%2.8 $167.29 1/15/20253,490,000 shares $563.18 million +10.4%3.1%2.4 $161.37 12/31/20243,160,000 shares $451.66 million +22.0%2.8%2.4 $142.93 12/15/20242,590,000 shares $431.05 million +22.8%2.3%2 $166.43 11/30/20242,110,000 shares $393.45 million -7.5%1.9%1.6 $186.47 11/15/20242,280,000 shares $401.92 million -8.1%2.0%1.7 $176.28 Get the Latest News and Ratings for BLDR and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Builders FirstSource and its competitors with MarketBeat's FREE daily newsletter. 10/31/20242,480,000 shares $425.07 million -9.5%2.2%1.8 $171.40 10/15/20242,740,000 shares $536.27 million -6.2%2.4%1.8 $195.72 9/30/20242,920,000 shares $566.07 million -18.2%2.6%1.7 $193.86 9/15/20243,570,000 shares $654.38 million -1.4%3.1%1.9 $183.30 8/31/20243,620,000 shares $629.88 million +11.0%3.2%2 $174.00 8/15/20243,260,000 shares $536.99 million +21.2%2.9%1.7 $164.72 7/31/20242,690,000 shares $450.23 million -7.9%2.4%1.2 $167.37 7/15/20242,920,000 shares $447.26 million -6.1%2.4%1.4 $153.17 6/30/20243,110,000 shares $430.46 million +2.3%2.6%1.6 $138.41 6/15/20243,040,000 shares $454.63 million -19.8%2.5%1.7 $149.55 5/31/20243,790,000 shares $609.39 million +21.9%3.2%2.3 $160.79 5/15/20243,110,000 shares $534.73 million +20.5%2.6%2 $171.94 4/30/20242,580,000 shares $471.68 million -3.4%2.2%1.8 $182.82 4/15/20242,670,000 shares $492.37 million -1.8%2.2%2.1 $184.41 3/31/20242,720,000 shares $567.26 million -13.1%2.3%2.3 $208.55 3/15/20243,130,000 shares $611.92 million -5.2%2.6%2.5 $195.50 2/29/20243,300,000 shares $643.63 million -3.5%2.8%1.9 $195.04 2/15/20243,420,000 shares $639.64 million No Change2.9%1.9 $187.03 1/31/20243,420,000 shares $594.26 million -3.9%2.8%1.9 $173.76 1/15/20243,560,000 shares $595.91 million -5.1%3.0%1.8 $167.39 12/31/20233,750,000 shares $626.03 million -12.0%3.1%1.9 $166.94 12/15/20234,260,000 shares $694.55 million -1.2%3.5%2.1 $163.04 11/30/20234,310,000 shares $577.54 million -4.2%3.6%2.7 $134.00 11/15/20234,500,000 shares $579.51 million -14.6%3.7%2.9 $128.78 10/31/20235,270,000 shares $571.90 million +22.6%4.4%3.4 $108.52 10/15/20234,300,000 shares $499.96 million -1.8%3.5%2.9 $116.27 9/30/20234,380,000 shares $545.27 million +5.5%3.6%3 $124.49 9/15/20234,150,000 shares $527.63 million -2.1%3.4%2.7 $127.14 8/31/20234,240,000 shares $615.22 million -4.5%3.5%2.4 $145.10 8/15/20234,440,000 shares $669.51 million +23.7%3.6%2.2 $150.79WARNING to All American Investors (Ad)Forget the headlines about the "trade war." This is where a real military showdown between China and the U.S. is playing out. China has one goal: take Taiwan and control the future of AI.There's a good chance you own at least one of these through a brokerage account, mutual fund, 401K, 7/31/20233,590,000 shares $518.58 million No Change2.9%1.7 $144.45 7/15/20233,590,000 shares $506.76 million -8.9%2.9%1.6 $141.16 6/30/20233,940,000 shares $535.64 million -30.8%3.2%1.6 $135.95 6/15/20235,690,000 shares $699.98 million +14.0%4.6%2.3 $123.02 5/31/20234,990,000 shares $577.74 million +2.5%4.0%2.1 $115.78 5/15/20234,870,000 shares $575.44 million -1.4%3.9%2.2 $118.16 4/30/20234,940,000 shares $468.16 million -9.4%4.4%2.3 $94.77 4/15/20235,450,000 shares $514.26 million +29.2%4.0%2.8 $94.36 3/31/20234,220,000 shares $374.65 million +0.5%3.1%2.3 $88.78 3/15/20234,200,000 shares $334.03 million +3.5%3.1%2.3 $79.53 2/28/20234,060,000 shares $344.21 million -6.5%3.0%2.3 $84.78 2/15/20234,340,000 shares $363.61 million -13.7%3.0%2.5 $83.78 1/31/20235,030,000 shares $400.89 million -10.0%3.5%2.7 $79.70 1/15/20235,590,000 shares $402.09 million -5.1%3.9%3.1 $71.93 12/30/20225,890,000 shares $382.14 million -4.5%4.1%3 $64.88 12/15/20226,170,000 shares $421.23 million -2.1%4.3%3 $68.27 11/30/20226,300,000 shares $402.76 million +0.3%4.4%2.9 $63.93 11/15/20226,280,000 shares $402.30 million -7.9%4.3%3 $64.06 10/31/20226,820,000 shares $420.52 million -7.2%4.4%3.3 $61.66 10/15/20227,350,000 shares $426.01 million -6.0%4.8%3.4 $57.96 9/30/20227,820,000 shares $460.75 million -15.1%5.1%3.5 $58.92 9/15/20229,210,000 shares $509.31 million +17.3%6.0%4 $55.30 8/31/20227,850,000 shares $460.09 million +2.9%5.1%3.2 $58.61 8/15/20227,630,000 shares $531.51 million -7.5%5.0%2.9 $69.66 7/31/20228,250,000 shares $561 million -0.7%4.9%2.9 $68.00 7/15/20228,310,000 shares $530.51 million +9.5%4.9%2.9 $63.84 6/30/20227,590,000 shares $407.58 million +6.8%4.5%2.6 $53.70 6/15/20227,110,000 shares $394.32 million -3.5%4.2%2.4 $55.46 5/31/20227,370,000 shares $479.71 million +21.6%4.4%2.8 $65.09 5/15/20226,060,000 shares $405.35 million -10.8%3.6%2.2 $66.89 4/30/20226,790,000 shares $418.06 million -5.7%3.9%2.7 $61.57 4/15/20227,200,000 shares $440.35 million +4.7%4.2%2.8 $61.16 3/31/20226,880,000 shares $444.04 million -0.9%4.0%2.7 $64.54 3/15/20226,940,000 shares $509.12 million +15.7%4.0%2.8 $73.36 2/28/20226,000,000 shares $446.52 million -4.8%3.5%2.2 $74.42 2/15/20226,300,000 shares $449.44 million -2.5%3.6%2.4 $71.34 1/31/20226,460,000 shares $439.22 million +10.1%3.4%2.4 $67.99 1/15/20225,870,000 shares $461.85 million +0.2%3.1%2.2 $78.68 12/31/20215,860,000 shares $502.26 million -16.6%3.1%2.3 $85.71 12/15/20217,030,000 shares $550.17 million -13.0%3.7%3 $78.26 7/30/20218,850,000 shares $393.83 million -8.0%4.3%2.8 $44.50 7/15/20219,620,000 shares $402.50 million -14.3%4.7%3 $41.84 6/30/202111,220,000 shares $478.65 million -20.5%5.5%3.6 $42.66 6/15/202114,110,000 shares $611.81 million +16.8%6.9%5.7 $43.36 5/28/202112,080,000 shares $538.04 million +5.3%5.9%5.1 $44.54 5/14/202111,470,000 shares $550.10 million +14.2%N/A5.1 $47.96 4/30/202110,040,000 shares $501.70 million -5.9%N/A4.9 $49.97 4/15/202110,670,000 shares $510.24 million -3.0%N/A5.5 $47.82 3/31/202111,000,000 shares $505.01 million +11.6%N/A5.2 $45.91 3/15/20219,860,000 shares $460.86 million +5.6%N/A4 $46.74WARNING to All American Investors (Ad)Forget the headlines about the "trade war." This is where a real military showdown between China and the U.S. is playing out. China has one goal: take Taiwan and control the future of AI.There's a good chance you own at least one of these through a brokerage account, mutual fund, 401K, 2/26/20219,340,000 shares $379.30 million -2.9%N/A4 $40.61 2/12/20219,620,000 shares $417.70 million +8.2%N/A4.3 $43.42 1/29/20218,890,000 shares $345.73 million -12.1%N/A3.9 $38.89 1/15/202110,110,000 shares $406.93 million -35.9%N/A4.3 $40.25 12/31/202015,780,000 shares $667.18 million +3.1%N/A7.4 $42.28 12/15/202015,310,000 shares $542.59 million +9.2%13.4%8.6 $35.44 11/30/202014,020,000 shares $531.78 million -6.4%12.2%7 $37.93 11/15/202014,980,000 shares $521.83 million +19.7%13.1%6.2 $34.84 10/30/202012,520,000 shares $375.73 million -1.1%10.9%4.4 $30.01 10/15/202012,660,000 shares $429.30 million +2.7%11.1%4.7 $33.91 9/30/202012,330,000 shares $402.20 million -2.9%10.8%4.7 $32.62 9/15/202012,700,000 shares $413.77 million +65.4%11.1%5.2 $32.58 8/31/20207,680,000 shares $235.16 million +139.3%6.7%3.6 $30.62 8/14/20203,210,000 shares $97.17 million +18.9%2.8%1.9 $30.27 7/31/20202,700,000 shares $63.96 million -3.6%2.4%2.4 $23.69 7/15/20202,800,000 shares $58.02 million -1.1%2.5%2.5 $20.72 6/30/20202,830,000 shares $58.58 million -0.7%2.5%2.4 $20.70 6/15/20202,850,000 shares $64.81 million -12.8%2.5%2.1 $22.74 5/29/20203,270,000 shares $68.05 million +23.9%2.9%2 $20.81 5/15/20202,640,000 shares $42.45 million -22.1%2.3%1.5 $16.08 4/30/20203,390,000 shares $62.21 million +11.9%3.0%1.9 $18.35 4/15/20203,030,000 shares $40.15 million +2.4%2.7%1.8 $13.25 BLDR Short Interest - Frequently Asked Questions What is Builders FirstSource's current short interest? Short interest is the volume of Builders FirstSource shares that have been sold short but have not yet been covered or closed out. As of March 31st, traders have sold 4,200,000 shares of BLDR short. 3.78% of Builders FirstSource's shares are currently sold short. Learn More on Builders FirstSource's current short interest. What is a good short interest ratio for Builders FirstSource? 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. BLDR shares currently have a short interest ratio of 2.0. Learn More on Builders FirstSource's short interest ratio. Which institutional investors are shorting Builders FirstSource? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Builders FirstSource: Jefferies Financial Group Inc., Wolverine Trading LLC, Squarepoint Ops LLC, Millennium Management LLC, Jefferies Financial Group Inc., Hudson Bay Capital Management LP, Group One Trading LLC, Cubist Systematic Strategies LLC, Capstone Investment Advisors LLC, Citadel Advisors LLC, Balyasny Asset Management L.P., Jane Street Group LLC, Tudor Investment Corp ET AL, Parallax Volatility Advisers L.P., Candelo Capital Management LP, Susquehanna International Group LLP, Concourse Financial Group Securities Inc., PEAK6 LLC, Walleye Trading LLC, Walleye Capital LLC, Capital Fund Management S.A., and Twin Tree Management LP. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Builders FirstSource? 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. 3.78% of Builders FirstSource's floating shares are currently sold short. Is Builders FirstSource's short interest increasing or decreasing? Builders FirstSource saw a decrease in short interest in March. As of March 31st, there was short interest totaling 4,200,000 shares, a decrease of 14.8% from the previous total of 4,930,000 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. What is Builders FirstSource's float size? Builders FirstSource currently has issued a total of 113,743,000 shares. Some of Builders FirstSource'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. Builders FirstSource currently has a public float of 111,160,000 shares. How does Builders FirstSource's short interest compare to its competitors? 3.78% of Builders FirstSource's shares are currently sold short. Here is how the short interest of companies compare to Builders FirstSource: Lennox International Inc. (5.34%), Masco Co. (2.44%), Owens Corning (1.48%), A. O. Smith Co. (4.37%), UFP Industries, Inc. (2.03%), AAON, Inc. (4.18%), Simpson Manufacturing Co., Inc. (1.91%), Trex Company, Inc. (5.99%), Armstrong World Industries, Inc. (1.52%), Griffon Co. (4.84%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Charter Communications, Inc. ($4.52 billion), Apollo Global Management, Inc. ($4.26 billion), Capital One Financial Co. ($3.79 billion), AppLovin Co. ($2.91 billion), Corcept Therapeutics Incorporated ($1.89 billion), Amcor plc ($1.60 billion), Carnival Co. & plc ($1.16 billion), BCE Inc. ($1.14 billion), AST SpaceMobile, Inc. ($1.10 billion), and Best Buy Co., Inc. ($1.03 billion). View all of the most shorted stocks. What does it mean to sell short Builders FirstSource stock? Short selling BLDR is an investing strategy that aims to generate trading profit from Builders FirstSource as its price is falling. BLDR shares are trading up $0.67 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 Builders FirstSource? A short squeeze for Builders FirstSource 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 BLDR, which in turn drives the price of the stock up even further. How often is Builders FirstSource'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 BLDR, twice per month. The most recent reporting period available is March, 31 2025. More Short Interest Resources from MarketBeat Related Companies LII Short Interest Data MAS Short Interest Data OC Short Interest Data AOS Short Interest Data UFPI Short Interest Data AAON Short Interest Data SSD Short Interest Data TREX Short Interest Data AWI Short Interest Data GFF Short Interest Data Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NYSE:BLDR) was last updated on 4/12/2025 by MarketBeat.com Staff From Our PartnersWARNING to All American InvestorsForget the headlines about the "trade war." This is where a real military showdown between China and the U....Behind the Markets | SponsoredCollect $7k per month from Tesla’s SECRET dividendTesla doesn't pay a traditional dividend.... 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