| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Whiteowl Holdings LLC | 27% | 3,126,650 | Whiteowl Holdings LLC | 05 Aug 2025 | ||||
| MIZUHO FINANCIAL GROUP INC | 6.3% | $7,188,041 | 718,086 | Mizuho Financial Group, Inc. | 31 Dec 2025 | |||
| WOLVERINE ASSET MANAGEMENT LLC | 5% | 574,171 | WOLVERINE ASSET MANAGEMENT LLC | 31 Oct 2025 |
As of 31 Dec 2025, 24 institutional investors reported holding 6,544,022 shares of Quantumsphere Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QUMS). This represents 57% of the company’s total 11,398,190 outstanding shares.
The largest institutional shareholders of Quantumsphere Acquisition Corp - Ordinary Shares, par value $0.0001 per share (QUMS) together control 58% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| MIZUHO SECURITIES USA LLC | 6.3% | 718,086 | 0.12% | $7,128,939 | |
| WOLVERINE ASSET MANAGEMENT LLC | 5% | 575,222 | 0.08% | $5,757,972 | |
| Karpus Management, Inc. | 4.3% | 494,350 | 0.15% | $4,948,444 | |
| Shaolin Capital Management LLC | 4.2% | 480,000 | 0.18% | $4,804,800 | |
| Clear Street Group Inc. | 3.7% | 424,762 | +30262% | 0.02% | $4,251,868 |
| Glazer Capital, LLC | 3.7% | 424,153 | 0.11% | $4,246,000 | |
| D. E. Shaw & Co., Inc. | 3.6% | 409,860 | 0% | $4,102,699 | |
| Linden Advisors LP | 3.5% | 400,000 | 0.02% | $4,004,000 | |
| AQR Arbitrage LLC | 2.8% | 322,660 | 0.07% | $3,229,827 | |
| BERKLEY W R CORP | 2.7% | 303,580 | 0.17% | $3,038,836 | |
| HGC Investment Management Inc. | 2.6% | 300,000 | 0.64% | $3,003,000 | |
| Westchester Capital Management, LLC | 2.2% | 250,000 | 0.12% | $2,502,501 | |
| Hudson Bay Capital Management LP | 2.1% | 235,000 | 0% | 0.01% | $2,352,350 |
| TWO SIGMA INVESTMENTS, LP | 1.9% | 217,479 | 0% | $2,176,965 | |
| TORONTO DOMINION BANK | 1.5% | 175,778 | 0% | $1,759,538 | |
| Cable Car Capital, LP | 1.5% | 174,801 | 0.11% | $1,749,758 | |
| HEIGHTS CAPITAL MANAGEMENT, INC | 1.3% | 150,000 | 0.57% | $1,501,500 | |
| Radcliffe Capital Management, L.P. | 1.3% | 150,000 | 0.08% | $1,501,500 | |
| Periscope Capital Inc. | 1.1% | 125,000 | 0.24% | $1,251,250 | |
| BNP PARIBAS FINANCIAL MARKETS | 0.9% | 102,340 | 0% | 0% | $1,024,423 |
| Schonfeld Strategic Advisors LLC | 0.48% | 55,000 | 0% | $550,550 | |
| Warberg Asset Management LLC | 0.36% | 41,421 | 0.12% | $414,624 | |
| Virtu Financial LLC | 0.22% | 24,783 | +66% | 0.01% | $248,000 |
| Logan Stone Capital, LLC | 0.13% | 14,500 | 0.04% | $145,145 | |
| MORGAN STANLEY | 0% | 30 | 0% | $300 |