QUMS · Quantumsphere Acquisition Corp
$10.27
+0.00 (+0.00%)
At close · Jul 29
Going-concern doubt
— flagged Jun 15, 2026
Substantial doubt about the company's ability to continue as a going concern.
“There is no assurance that the Company’s plans to raise capital or to consummate a Business Combination will be successful within the Combination Period. The Company lacks the financial resources it needs to sustain operations for a reasonable period of time, which is considered to be one year from the date of the issuance of the financial statements. Therefore, management has determined that these conditions raise substantial doubt about the Company’s ability to continue as a going concern until the earlier of the consummation of the Business Combination or the date the Company is required to liquidate.”View the 10-K filed Jun 15, 2026
Market Cap
$112.31M
Shares
10.94M
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
The Jun 30, 2026 filing window is
still open — showing the latest known positions. Funds that have not filed yet
carry their prior-quarter positions; a fund that filed without this stock counts
as sold out.
Holders: 29
Total Value: $76,791,540
Total Shares: 7,580,617
Institutional Ownership Trend
4 quarters
Holder Concentration
Across 29 13F filersTop Holder
9.7%
of institutional value
Top 5
37.3%
of institutional value
Top 10
64.5%
of institutional value
HHI
530
Broadly held
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mid MIZUHO SECURITIES USA LLC Broker-Dealer | $7,736,775 | 10.08% | 757,023 | Shares | Defined | 2026-07-28 | ||||
| Mid WOLVERINE ASSET MANAGEMENT LLC | $6,112,318 | 7.96% | 603,984 | Shares | Defined | 2026-05-04 | ||||
| Mid BERKLEY W R CORP | $5,146,424 | 6.70% | 508,540 | Shares | Sole | 2026-05-15 | ||||
| Mid Karpus Management, Inc. | $4,998,015 | 6.51% | 493,875 | Shares | Sole | 2026-05-14 | ||||
| Mid Shaolin Capital Management LLC | $4,857,600 | 6.33% | 480,000 | Shares | Sole | 2026-05-15 | ||||
| Mid RIVERNORTH CAPITAL MANAGEMENT, LLC | $4,296,061 | 5.59% | 424,512 | Shares | Sole | 2026-05-15 | ||||
| Mid GLAZER CAPITAL, LLC | $4,280,952 | 5.57% | 423,019 | Shares | Sole | 2026-05-14 | ||||
| Mega D. E. Shaw & Co., Inc. | $4,147,783 | 5.40% | 409,860 | Shares | Defined | 2026-05-15 | ||||
| Mid Linden Advisors LP | $4,048,000 | 5.27% | 400,000 | Shares | Sole | 2026-05-15 | ||||
| Mid Polar Asset Management Partners Inc. | $4,048,000 | 5.27% | 400,000 | Shares | Sole | 2026-05-15 | ||||
| Mid AQR Arbitrage LLC | $3,119,935 | 4.06% | 308,294 | Shares | Defined | 2026-05-15 | ||||
| Small HGC Investment Management Inc. | $3,036,000 | 3.95% | 300,000 | Shares | Sole | 2026-05-15 | ||||
| Large TORONTO DOMINION BANK Bank | $2,687,872 | 3.50% | 265,600 | Shares | Defined | 2026-05-15 | ||||
| Mid Westchester Capital Management, LLC | $2,529,999 | 3.29% | 250,000 | Shares | Other | 2026-05-15 | ||||
| Large Hudson Bay Capital Management LP | $2,378,200 | 3.10% | 235,000 | Shares | Sole | 2026-05-13 | ||||
| Large Clear Street Group Inc. | $1,771,010 | 2.31% | 175,001 | Shares | Sole | 2026-05-15 | ||||
| Small Cable Car Capital, LP | $1,768,986 | 2.30% | 174,801 | Shares | Sole | 2026-05-15 | ||||
| Small Radcliffe Capital Management, L.P. | $1,518,000 | 1.98% | 150,000 | Shares | Sole | 2026-05-15 | ||||
| Small HEIGHTS CAPITAL MANAGEMENT, INC | $1,518,000 | 1.98% | 150,000 | Shares | Other | 2026-05-15 | ||||
| Small HIGHBRIDGE CAPITAL MANAGEMENT LLC | $1,225,309 | 1.60% | 121,078 | Shares | Sole | 2026-05-15 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $1,164,285 | 1.52% | 115,048 | Shares | Defined | 2026-05-12 | ||||
| Small Crossingbridge Advisors, LLC | $1,091,189 | 1.42% | 107,825 | Shares | Sole | 2026-05-14 | ||||
| Small RLH Capital LLC | $1,012,000 | 1.32% | 100,000 | Shares | Defined | 2026-04-29 | ||||
| Small Periscope Capital Inc. | $1,012,000 | 1.32% | 100,000 | Shares | Sole | 2026-05-14 | ||||
| Large Schonfeld Strategic Advisors LLC | $556,600 | 0.72% | 55,000 | Shares | Sole | 2026-05-15 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $357,144 | 0.47% | 35,291 | Shares | Sole | 2026-05-15 | ||||
| Mid Virtu Financial LLC | $225,706 | 0.29% | 22,303 | Shares | Defined | 2026-05-14 | ||||
| Small Logan Stone Capital, LLC | $146,740 | 0.19% | 14,500 | Shares | Sole | 2026-05-15 | ||||
| Mega MORGAN STANLEY | $637 | 0.00% | 63 | Shares | Defined | 2026-05-15 | ||||
| No holders match your search. | ||||||||||
Key facts
CIK
2070900
CUSIP
G7387B106
13F (30d)
1 filings
1 filers