National Grid (NGG) Short Interest Ratio & Short Volume $63.01 +0.17 (+0.27%) Closing price 03:58 PM EasternExtended Trading$63.17 +0.16 (+0.25%) 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 ForecastsChartCompetitorsDividendFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock National Grid Short Interest DataNational Grid (NGG) has a short interest of 1.46 million shares, representing 0.15% of the float (the number of shares available for trading by the public). This marks a -1.35% decrease in short interest from the previous month. The short interest ratio (days to cover) is 2.1, indicating that it would take 2.1 days of the average trading volume of 607,815 shares to cover all short positions.Current Short Interest1,460,000 sharesPrevious Short Interest1,480,000 sharesChange Vs. Previous Month-1.35%Dollar Volume Sold Short$90.65 millionShort Interest Ratio2.1 Days to CoverLast Record DateFebruary 28, 2025Outstanding Shares978,435,000 sharesShort Percent of Float0.15%Today's Trading Volume456,509 sharesAverage Trading Volume607,815 sharesToday's Volume Vs. Average75% Short Selling National Grid? Sign up to receive the latest short interest report for National Grid and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartNGG Short Interest Over TimeNGG Days to Cover Over TimeNGG Percentage of Float Shorted Over Time Remove Ads National Grid Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 2/28/20251,460,000 shares $90.65 million -1.4%0.1%2.1 $62.09 2/15/20251,480,000 shares $89.88 million +14.7%0.2%2.1 $60.73 1/31/20251,290,000 shares $79.15 million +183.8%N/A1.8 $61.35 1/15/2025454,500 shares $26.20 million +37.1%N/A0.7 $57.64 12/31/2024331,500 shares $19.70 million -66.7%N/A0.6 $59.42 12/15/2024995,700 shares $59.37 million -1.4%N/A1.9 $59.63 11/30/20241,010,000 shares $64.32 million +63.5%N/A2 $63.68 11/15/2024617,900 shares $38.78 million +16.5%N/A1.3 $62.76 10/31/2024530,200 shares $33.74 million -36.8%N/A1.3 $63.63 10/15/2024839,100 shares $56.35 million -6.7%N/A1.7 $67.16 Get the Latest News and Ratings for NGG and Related StocksEnter your email address below to receive the latest news and analysts' ratings for National Grid and its competitors with MarketBeat's FREE daily newsletter. 9/30/2024899,700 shares $62.68 million -25.6%N/A1.6 $69.67 9/15/20241,210,000 shares $84.22 million +4.3%N/A1.9 $69.60 8/31/20241,160,000 shares $77.26 million -0.9%N/A1.6 $66.60 8/15/20241,170,000 shares $75.28 million +7.3%N/A1.4 $64.34 7/31/20241,090,000 shares $70.25 million +0.9%N/A1.3 $64.45 7/15/20241,080,000 shares $65.66 million +25.9%N/A1.5 $60.80 6/30/2024858,000 shares $48.73 million +2.4%N/A1.3 $56.80 6/15/2024838,300 shares $47.41 million -72.3%N/A1.5 $56.55 5/31/20243,030,000 shares $175.29 million +1.0%N/A7 $57.85 5/15/20243,000,000 shares $218.40 million +10.3%N/A9.1 $72.80 4/30/20242,720,000 shares $181.26 million +2.6%N/A8.2 $66.64 4/15/20242,650,000 shares $170.95 million -4.7%N/A6.4 $64.51 3/31/20242,780,000 shares $189.65 million -0.4%N/A6.8 $68.22 3/15/20242,790,000 shares $189.41 million -11.2%N/A6.8 $67.89 2/29/20243,140,000 shares $209.31 million -14.0%N/A7.1 $66.66 2/15/20243,650,000 shares $236.48 million -11.2%N/A7.9 $64.79 1/31/20244,110,000 shares $277.55 million +37.9%N/A8.3 $67.53 1/15/20242,980,000 shares $204.67 million +21.6%N/A6.5 $68.68 12/31/20232,450,000 shares $166.58 million -5.8%N/A5.6 $67.99 12/15/20232,600,000 shares $176.31 million +11.1%N/A5.8 $67.81 11/30/20232,340,000 shares $154.46 million +30.0%N/A5.5 $66.01 11/15/20231,800,000 shares $111.56 million +0.6%N/A4.5 $61.98 10/31/20231,790,000 shares $107.67 million -13.9%N/A5.1 $60.15 10/15/20232,080,000 shares $125.44 million +8.3%N/A6.1 $60.31 9/30/20231,920,000 shares $116.41 million +5.5%N/A5.8 $60.63 9/15/20231,820,000 shares $116.90 million -1.1%N/A6 $64.23 8/31/20231,840,000 shares $116.31 million -9.8%N/A5.9 $63.21 8/15/20232,040,000 shares $125.93 million -7.3%N/A6.2 $61.73 7/31/20232,200,000 shares $148.24 million +10.6%N/A5.8 $67.38 7/15/20231,990,000 shares $135.18 million +15.7%N/A5.5 $67.93A brutally honest economic warning for 2025 (see proof) (Ad)New York Times best-selling financial author and world-renowned economist Addison Wiggin (a man who’s worked side-by-side with figures like Warren Buffett, Alan Greenspan, Ron Paul, Jim Rickards, and Steve Forbes, to name but a few) says....Full details here. 6/30/20231,720,000 shares $115.81 million +19.4%N/A4.8 $67.33 6/15/20231,440,000 shares $96.84 million +14.3%N/A3.9 $67.25 5/31/20231,260,000 shares $87.33 million +1.6%N/A3.3 $69.31 5/15/20231,240,000 shares $91.20 million +64.4%N/A3.5 $73.55 4/30/2023754,400 shares $54.05 million -10.6%N/A2.5 $71.65 4/15/2023843,800 shares $58.74 million +7.4%N/A2.8 $69.61 3/31/2023785,500 shares $53.41 million -10.3%N/A2.6 $67.99 3/15/2023876,100 shares $55.70 million +30.7%N/A2.8 $63.58 2/28/2023670,500 shares $42.18 million +13.4%N/A2.2 $62.91 2/15/2023591,200 shares $37.62 million +3.3%N/A1.8 $63.64 1/31/2023572,400 shares $36.50 million +3.2%N/A1.6 $63.77 1/15/2023554,700 shares $35.03 million +2.5%N/A1.4 $63.15 12/30/2022541,200 shares $32.65 million -15.0%N/A1.1 $60.32 12/15/2022636,800 shares $39.60 million -14.3%N/A1.2 $62.19 11/30/2022743,100 shares $45.77 million +17.1%N/A1.3 $61.60 11/15/2022634,600 shares $37.63 million +13.2%N/A1.1 $59.30 10/31/2022560,700 shares $30.63 million +56.9%N/A1 $54.62 10/15/2022357,300 shares $17.38 million -53.7%N/A0.7 $48.65 9/30/2022771,100 shares $39.73 million -18.7%N/A1.7 $51.53 9/15/2022948,400 shares $56.74 million -7.0%N/A2.4 $59.83 8/31/20221,020,000 shares $64.45 million +35.5%N/A2.5 $63.19 8/15/2022753,000 shares $53.21 million +13.9%N/A1.9 $70.67 7/31/2022660,900 shares $46.01 million +18.7%N/A1.6 $69.61 7/15/2022556,600 shares $36.90 million -13.8%N/A1.3 $66.29 6/30/2022646,000 shares $41.79 million -22.3%N/A1.5 $64.69 6/15/2022831,100 shares $53.86 million -15.5%N/A2 $64.81 5/31/2022983,700 shares $73.17 million +27.8%N/A2.5 $74.38 5/15/2022769,900 shares $57.75 million -3.5%N/A1.9 $75.01 4/30/2022797,400 shares $59.14 million -13.8%N/A2 $74.16 4/15/2022925,000 shares $71.68 million +38.1%N/A2.3 $77.49 3/31/2022669,700 shares $51.48 million -18.1%N/A1.6 $76.87 3/15/2022817,700 shares $61.82 million -5.7%N/A2 $75.60 2/28/2022866,700 shares $65.51 million +11.4%N/A2.2 $75.58 2/15/2022777,900 shares $56.39 million +28.8%N/A2.1 $72.49 1/31/2022603,800 shares $44.19 million -22.8%N/A1.8 $73.19 1/15/2022781,700 shares $57.57 million -17.4%N/A2.4 $73.65 12/31/2021946,000 shares $68.41 million +27.7%N/A3.3 $72.32 12/15/2021740,900 shares $52.04 million +6.9%N/A2.4 $70.24 11/30/2021693,200 shares $45.80 million +63.0%N/A2.3 $66.07 11/15/2021425,400 shares $28.04 million -20.2%N/A1.4 $65.92 10/29/2021533,200 shares $34.17 million +7.6%N/A1.8 $64.08 10/15/2021495,500 shares $30.53 million +72.9%N/A1.8 $61.61 9/30/2021286,600 shares $17.09 million -32.8%N/A1 $59.63 9/15/2021426,700 shares $28.33 million +35.9%N/A1.5 $66.39 8/31/2021314,100 shares $20.38 million +16.6%N/A1.1 $64.89 8/13/2021269,400 shares $17.88 million -7.1%N/A0.9 $66.37 7/30/2021289,900 shares $18.65 million -12.2%0.0%0.9 $64.32 7/15/2021330,300 shares $21.46 million -0.4%0.1%1 $64.96 6/30/2021331,700 shares $21.21 million -11.7%0.1%1.1 $63.94 6/15/2021375,800 shares $24.71 million -25.1%0.1%1.1 $65.76A brutally honest economic warning for 2025 (see proof) (Ad)New York Times best-selling financial author and world-renowned economist Addison Wiggin (a man who’s worked side-by-side with figures like Warren Buffett, Alan Greenspan, Ron Paul, Jim Rickards, and Steve Forbes, to name but a few) says....Full details here. 5/28/2021501,600 shares $33.54 million +23.9%0.1%1.4 $66.87 5/14/2021405,000 shares $26.29 million +7.0%N/A1.1 $64.92 4/30/2021378,400 shares $23.53 million +25.1%N/A1 $62.18 4/15/2021302,600 shares $18.52 million -2.0%N/A0.8 $61.21 3/31/2021308,900 shares $18.23 million -22.9%N/A0.8 $59.01 3/15/2021400,600 shares $23.60 million +3.7%N/A1.2 $58.92 2/26/2021386,300 shares $22.34 million +61.8%N/A1.1 $57.83 2/12/2021238,700 shares $14.11 million -19.9%N/A0.7 $59.13 1/29/2021297,900 shares $17.60 million -1.0%N/A0.9 $59.08 1/15/2021301,000 shares $17.97 million -13.8%N/A0.9 $59.70 12/31/2020349,300 shares $20.59 million -6.5%N/A1 $58.96 12/15/2020373,400 shares $21.76 million -66.4%N/A1 $58.28 11/30/20201,110,000 shares $64.94 million +126.1%N/A2.9 $58.50 11/15/2020490,900 shares $30.90 million -30.4%N/A1.4 $62.94 10/30/2020705,100 shares $42.28 million -12.6%N/A2.1 $59.96 10/15/2020807,100 shares $49.43 million +21.1%N/A2.4 $61.25 9/30/2020666,500 shares $38.52 million +23.6%N/A1.8 $57.79 9/15/2020539,200 shares $29.44 million -50.1%N/A1.3 $54.60 8/31/20201,080,000 shares $61.00 million +16.5%N/A2.3 $56.48 8/14/2020927,400 shares $54.11 million -5.8%N/A1.9 $58.35 7/31/2020984,700 shares $58.21 million +29.5%N/A1.9 $59.11 7/15/2020760,400 shares $42.08 million -28.9%N/A1.4 $55.34 6/30/20201,070,000 shares $64.99 million +38.6%N/A1.9 $60.74 6/15/2020772,100 shares $44.99 million +45.5%N/A1.3 $58.27 5/29/2020530,500 shares $30.29 million -45.5%N/A0.8 $57.10 5/15/2020972,600 shares $54.49 million +31.7%N/A1.3 $56.02 4/30/2020738,500 shares $43.39 million +10.3%N/A1 $58.75 4/15/2020669,300 shares $37.96 million -16.7%N/A0.9 $56.72 3/31/2020803,700 shares $46.72 million -11.5%N/A1 $58.13 NGG Short Interest - Frequently Asked Questions What is National Grid's current short interest? Short interest is the volume of National Grid shares that have been sold short but have not yet been covered or closed out. As of February 28th, traders have sold 1,460,000 shares of NGG short. 0.15% of National Grid's shares are currently sold short. Learn More on National Grid's current short interest. What is a good short interest ratio for National Grid? 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. NGG shares currently have a short interest ratio of 2.0. Learn More on National Grid's short interest ratio. Which institutional investors are shorting National Grid? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of National Grid: Wolverine Trading LLC, Group One Trading LLC, Citadel Advisors LLC, Optiver Holding B.V., Susquehanna International Group LLP, Concourse Financial Group Securities Inc., Walleye Trading LLC, 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 National Grid? 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. 0.15% of National Grid's floating shares are currently sold short. Is National Grid's short interest increasing or decreasing? National Grid saw a drop in short interest in the month of February. As of February 28th, there was short interest totaling 1,460,000 shares, a drop of 1.4% from the previous total of 1,480,000 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 National Grid's short interest compare to its competitors? 0.15% of National Grid's shares are currently sold short. Here is how the short interest of companies in the industry of "utilities" compare to National Grid: Enterprise Products Partners L.P. (1.75%), Constellation Energy Co. (2.22%), Energy Transfer LP (0.84%), American Electric Power Company, Inc. (1.81%), TC Energy Co. (0.73%), Exelon Co. (2.02%), Vistra Corp. (2.06%), Xcel Energy Inc. (1.59%), Cheniere Energy Partners (0.55%), Fortis Inc. (1.64%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Invesco QQQ ($23.74 billion), iShares 20+ Year Treasury Bond ETF ($10.75 billion), MicroStrategy Incorporated ($6.56 billion), Apollo Global Management, Inc. ($5.40 billion), Charter Communications, Inc. ($4.57 billion), AppLovin Co. ($4.45 billion), Capital One Financial Co. ($4.33 billion), Super Micro Computer, Inc. ($4.23 billion), Schlumberger Limited ($3.22 billion), and Royal Caribbean Cruises Ltd. ($3.06 billion). View all of the most shorted stocks. What does it mean to sell short National Grid stock? Short selling NGG is an investing strategy that aims to generate trading profit from National Grid as its price is falling. NGG shares are trading down $1.01 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 National Grid? A short squeeze for National Grid 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 NGG, which in turn drives the price of the stock up even further. How often is National Grid'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 NGG, twice per month. The most recent reporting period available is February, 28 2025. More Short Interest Resources from MarketBeat Related Companies Enterprise Products Partners Short Interest Constellation Energy Short Interest Energy Transfer Short Interest American Electric Power Short Interest TC Energy Short Interest Exelon Short Interest Vistra Short Interest Xcel Energy Short Interest Cheniere Energy Partners Short Interest Fortis 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:NGG) was last updated on 3/25/2025 by MarketBeat.com Staff From Our PartnersYour Wealth is Under AttackPlease don't wait—this is your moment to take action. 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