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Quantumsphere Acquisition Corp
QUMSUAdd to Watchlist
10.350USD
0.0000.00%
Close 05/15, 16:00（ET）Quotes delayed by 15 min
116.12MMarket Cap
--P/E TTM
More Details of Quantumsphere Acquisition Corp Company
Quantumsphere Acquisition Corporation is a blank check company. The Company is formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization, or similar business combination with one or more businesses. The Company has not selected any specific Business Combination target, and the Company has not engaged in any substantive discussions, directly or indirectly, with any business combination target. The Company is not engaged in any business operations and has not generated any revenue.
Quantumsphere Acquisition Corp Info
Ticker SymbolQUMSU
Company nameQuantumsphere Acquisition Corp
IPO dateAug 06, 2025
CEOZhang (Ping)
Number of employees- -
Security typeUnit
Fiscal year-end- -
Address1185 6th Avenue
CityNEW YORK
Stock exchangeNASDAQ OMX - NASDAQ BASIC
CountryUnited States of America
Postal code10036
Phone12126121400
Website
Ticker SymbolQUMSU
IPO dateAug 06, 2025
CEOZhang (Ping)
Company Executives of Quantumsphere Acquisition Corp
Name
Name/Position
Position
Shareholding
Change
Mr. Ping Zhang
Mr. Ping Zhang
Chairman of the Board, Chief Executive Officer, Chief Financial Officer and Director
Chairman of the Board, Chief Executive Officer, Chief Financial Officer and Director
--
--
Mr. Wei (Victor) Zhang
Mr. Wei (Victor) Zhang
Independent Director
Independent Director
--
--
Mr. Daniel M. Mccabe
Mr. Daniel M. Mccabe
Independent Director
Independent Director
--
--
Ms. Qi Gong
Ms. Qi Gong
Independent Director
Independent Director
--
--
Name
Name/Position
Position
Shareholding
Change
Mr. Ping Zhang
Mr. Ping Zhang
Chairman of the Board, Chief Executive Officer, Chief Financial Officer and Director
Chairman of the Board, Chief Executive Officer, Chief Financial Officer and Director
--
--
Mr. Wei (Victor) Zhang
Mr. Wei (Victor) Zhang
Independent Director
Independent Director
--
--
Mr. Daniel M. Mccabe
Mr. Daniel M. Mccabe
Independent Director
Independent Director
--
--
Ms. Qi Gong
Ms. Qi Gong
Independent Director
Independent Director
--
--
Revenue Breakdown
Relevant data have not been disclosed by the company yet.
Relevant data have not been disclosed by the company yet.
By Business
By Region
Relevant data have not been disclosed by the company yet.
Shareholding Stats
Updated: Mon, Apr 27
Updated: Mon, Apr 27
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
RiverNorth Capital Management LLC
3.72%
Polar Asset Management Partners Inc.
3.51%
Whiteowl Holdings LLC
2.00%
Gabelli Funds, LLC
1.10%
Westchester Capital Management, LLC
0.88%
Other
88.79%
Shareholders
Shareholders
Proportion
RiverNorth Capital Management LLC
3.72%
Polar Asset Management Partners Inc.
3.51%
Whiteowl Holdings LLC
2.00%
Gabelli Funds, LLC
1.10%
Westchester Capital Management, LLC
0.88%
Other
88.79%
Shareholder Types
Shareholders
Proportion
Investment Advisor/Hedge Fund
5.73%
Hedge Fund
3.51%
Corporation
2.00%
Investment Advisor
1.30%
Research Firm
0.09%
Other
87.37%
Institutional Shareholding
Updated: Wed, Apr 1
Updated: Wed, Apr 1
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2026Q4
32
5.61M
0.54%
--
2026Q1
34
1.21M
10.63%
-4.36M
2025Q4
33
5.45M
47.74%
+5.10M
2025Q3
5
172.06K
1.51%
+110.00K
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
RiverNorth Capital Management LLC
424.51K
3.72%
-488.00
-0.11%
Dec 31, 2025
Polar Asset Management Partners Inc.
400.00K
3.51%
--
--
Dec 31, 2025
Whiteowl Holdings LLC
228.65K
2%
+228.65K
--
Aug 07, 2025
Gabelli Funds, LLC
125.00K
1.1%
--
--
Dec 31, 2025
Westchester Capital Management, LLC
100.00K
0.88%
--
--
Dec 31, 2025
ATW Spac Management LLC
100.00K
0.88%
+100.00K
--
Sep 30, 2025
HRT Financial LP
31.09K
0.27%
+1.10K
+3.68%
Dec 31, 2025
Clear Street Group Inc
14.87K
0.13%
-203.19K
-93.18%
Dec 31, 2025
J.P. Morgan Securities LLC
10.00K
0.09%
--
--
Dec 31, 2025
Lazard Asset Management, L.L.C.
4.58K
0.04%
--
--
Dec 31, 2025
View more
Related ETFs
Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
RiverNorth Enhanced Pre-Merger SPAC ETF
2.04%
CrossingBridge Pre-Merger SPAC ETF
0%
RiverNorth Enhanced Pre-Merger SPAC ETF
Proportion2.04%
CrossingBridge Pre-Merger SPAC ETF
Proportion0%
Dividend
A total of
0.00
USD has been distributed in dividends over the past 5 years.
Date
Dividend
Record Date
Payment Date
Ex-dividend Date
No Data
Stock Splits
Date
Ex-dividend Date
Type
Ratio
No Data
Date
Ex-dividend Date
Type
Ratio
No Data
