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Quantumsphere Acquisition (QUMSU) Institutional Ownership

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Institutional Ownership Changes (13F Filings) for Quantumsphere Acquisition (NASDAQ:QUMSU)

Number of
Institutional Buyers
(last 12 months)
21
Total
Institutional Inflows
(last 12 months)
$38.54M
Number of
Institutional Sellers
(last 12 months)
1
Total
Institutional Outflows
(last 12 months)
$2.07M
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QUMSU Institutional Buying and Selling by Quarter

Quantumsphere Acquisition Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/16/2026 Clear Street Group Inc.14,866$151K0.0%-93.2%0.000%
2/12/2026 HRT Financial LP31,089$316K0.0%+3.7%0.000%
1/1/2026 JPMorgan Chase & Co.10,000$101K0.0%N/A0.000%
12/1/2025 Polar Asset Management Partners Inc.400,000$4.05M0.0%N/A0.000%
11/18/2025 Heights Capital Management Inc.150,000$1.52M0.4%N/A0.000%
11/17/2025 Meteora Capital LLC229,999$2.33M0.3%N/A0.000%
11/17/2025 Linden Advisors LP400,000$4.05M0.0%N/A0.000%
11/17/2025 Clear Street Group Inc.218,057$2.21M0.0%N/A0.000%
11/17/2025 Berkley W R Corp148,770$1.51M0.1%N/A0.000%
11/17/2025 Boothbay Fund Management LLC100,000$1.01M0.0%N/A0.000%
11/14/2025 Schonfeld Strategic Advisors LLC87,486$886K0.0%N/A0.000%
11/14/2025 Polar Asset Management Partners Inc.400,000$4.05M0.0%N/A0.000%
11/14/2025 AQR Arbitrage LLC322,660$3.27M0.1%N/A0.000%
11/14/2025 Cable Car Capital LP174,801$1.77M0.7%N/A0.000%
11/14/2025 Two Sigma Investments LP222,490$2.25M0.0%N/A0.000%
11/14/2025 Radcliffe Capital Management L.P.150,000$1.52M0.1%N/A0.000%
11/13/2025 Harraden Circle Investments LLC400,707$4.06M0.8%N/A0.000%
11/13/2025 BNP Paribas Financial Markets102,340$1.04M0.0%N/A0.000%
11/12/2025 Gabelli Funds LLC57,300$580K0.0%N/A0.000%
11/12/2025 GABELLI & Co INVESTMENT ADVISERS INC.67,700$686K0.1%N/A0.000%
11/12/2025ATW Spac Management LLC100,000$1.01M1.3%N/A0.000%
11/7/2025 JPMorgan Chase & Co.10,000$101K0.0%N/A0.000%
11/6/2025 Warberg Asset Management LLC41,421$420K0.1%N/A0.000%
10/30/2025 TrueMark Investments LLC10,000$101K0.0%N/A0.000%


QUMSU Institutional Ownership - Frequently Asked Questions

During the previous two years, 21 institutional investors and hedge funds held shares of Quantumsphere Acquisition. The most heavily invested institutionals were Harraden Circle Investments LLC ($4.06M), Polar Asset Management Partners Inc. ($4.05M), Linden Advisors LP ($4.05M), AQR Arbitrage LLC ($3.27M), Meteora Capital LLC ($2.33M), Two Sigma Investments LP ($2.25M), and Cable Car Capital LP ($1.77M).Learn more on Quantumsphere Acquisition's institutional investors.

Of the 21 institutional investors that purchased Quantumsphere Acquisition's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Polar Asset Management Partners Inc. ($800K), Harraden Circle Investments LLC ($400.71K), Linden Advisors LP ($400K), AQR Arbitrage LLC ($322.66K), Meteora Capital LLC ($230.00K), Two Sigma Investments LP ($222.49K), and Clear Street Group Inc. ($218.06K).

Institutional investors have bought a total of 3,804,835 shares in the last 24 months. This purchase volume represents approximately $38.54M in transactions.

The following institutional investors have sold Quantumsphere Acquisition stock in the last 24 months: Clear Street Group Inc. ($203.19K).

Institutional investors have sold a total of 203,191 shares in the last 24 months. This volume of shares sold represents approximately $2.07M in transactions.


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This page (NASDAQ:QUMSU) was last updated on 6/9/2026 by MarketBeat.com Staff.
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