Sidus Space (SIDU) Institutional Ownership $1.21 -0.13 (-9.70%) Closing price 10/10/2025 04:00 PM EasternExtended Trading$1.19 -0.02 (-1.65%) As of 10/10/2025 08:00 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 Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Sidus Space (NASDAQ:SIDU)CurrentInstitutional OwnershipPercentage17.91%Number ofInstitutional Buyers(last 12 months)11TotalInstitutional Inflows(last 12 months)$3.69MNumber ofInstitutional Sellers(last 12 months)0 Get SIDU Insider Trade Alerts Want to know when executives and insiders are buying or selling Sidus Space stock? 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Skip Chart & View Institutional Buying and Selling Data SIDU Institutional Buying and Selling by Quarter Sidus Space Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/14/2025Jane Street Group LLC55,046$95K0.0%N/A0.301% 8/12/2025XTX Topco Ltd97,358$168K0.0%N/A0.532% 8/8/2025Geode Capital Management LLC120,799$209K0.0%+28.1%0.660% 5/7/2025Essex Investment Management Co. LLC30,112$45K0.0%N/A0.165% 4/17/2025FNY Investment Advisers LLC72,500$107K0.1%N/A0.396% 2/17/2025Millennium Management LLC18,253$89K0.0%N/A0.437% 2/14/2025Jane Street Group LLC24,130$118K0.0%N/A0.577% 2/14/2025Northern Trust Corp22,685$111K0.0%N/A0.543% 2/14/2025Heights Capital Management Inc.483,000$2.37M1.2%N/A11.555% 2/14/2025Tower Research Capital LLC TRC5,620$28K0.0%+747.7%0.134% 2/13/2025XTX Topco Ltd11,918$58K0.0%N/A0.285% 2/12/2025Geode Capital Management LLC86,984$426K0.0%+139.2%2.081% 2/11/2025Virtu Financial LLC31,968$157K0.0%N/A0.765% 1/30/2025Vontobel Holding Ltd.10,400$51K0.0%N/A0.249% 5/16/2024AWM Investment Company Inc.200,000$678K0.1%N/A4.785% 8/11/2023Penserra Capital Management LLC139,268$25K0.0%+452.8%0.277% 5/1/2023Virtu Financial LLC99,212$55K0.0%N/A0.281% 11/7/2022Virtu Financial LLC14,667$31K0.0%N/A0.092% 10/25/2022Raymond James Financial Services Advisors Inc.38,550$81K0.0%+139.4%0.241% 7/19/2022Commonwealth Equity Services LLC10,000$33K0.0%N/A0.059% (Data available from 1/1/2016 forward) SIDU Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of SIDU shares? During the previous two years, 12 institutional investors and hedge funds held shares of Sidus Space. The most heavily invested institutionals were Heights Capital Management Inc. ($2.37M), AWM Investment Company Inc. ($678K), Geode Capital Management LLC ($209K), XTX Topco Ltd ($168K), Virtu Financial LLC ($157K), Northern Trust Corp ($111K), and FNY Investment Advisers LLC ($107K).Learn more on Sidus Space's institutional investors. What percentage of Sidus Space's stock is owned by institutional investors? 17.91% of Sidus Space's stock is owned by institutional investors. Learn more on SIDU's institutional investor holdings. Which institutional investors have been buying Sidus Space's stock? Of the 12 institutional investors that purchased Sidus Space's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Heights Capital Management Inc. ($483K), AWM Investment Company Inc. ($200K), XTX Topco Ltd ($109.28K), Jane Street Group LLC ($79.18K), Geode Capital Management LLC ($77.11K), FNY Investment Advisers LLC ($72.50K), and Virtu Financial LLC ($31.97K). How much institutional buying is happening at Sidus Space? Institutional investors have bought a total of 939,439 shares in the last 24 months. This purchase volume represents approximately $3.69M in transactions. 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