| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BARCLAYS PLC | 6.3% | $19,072,863 | 1,864,405 | Barclays PLC | 30 Jun 2025 |
As of 30 Sep 2025, 45 institutional investors reported holding 21,815,854 shares of Archimedes Tech SPAC Partners II Co. - COMMON-STOCK (ATII). This represents 74% of the company’s total 29,593,730 outstanding shares.
The largest institutional shareholders of Archimedes Tech SPAC Partners II Co. - COMMON-STOCK (ATII) together control 62% 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 |
|---|---|---|---|---|---|
| TENOR CAPITAL MANAGEMENT Co., L.P. | 5.1% | 1,500,000 | 0% | 0.2% | $15,315,450 |
| Magnetar Financial LLC | 4.4% | 1,300,000 | 0% | 0.08% | $13,305,500 |
| D. E. Shaw & Co., Inc. | 3.8% | 1,138,500 | 0% | 0.01% | $11,635,470 |
| Linden Advisors LP | 3.4% | 1,000,000 | 0% | 0.07% | $10,235,000 |
| AQR Arbitrage LLC | 3.3% | 964,382 | -0.52% | 0.25% | $9,846,340 |
| Westchester Capital Management, LLC | 3% | 900,000 | +38% | 0.48% | $9,189,001 |
| GLAZER CAPITAL, LLC | 3% | 875,087 | 0% | 0.3% | $8,935,000 |
| LMR Partners LLP | 2.9% | 850,000 | 0% | 0.11% | $8,678,755 |
| Ghisallo Capital Management LLC | 2.7% | 800,000 | 0% | 0.27% | $8,188,000 |
| Alberta Investment Management Corp | 2.5% | 750,000 | 0% | 0.08% | $7,665,000 |
| Governors Lane LP | 2.5% | 750,000 | 0% | 1.1% | $7,676,250 |
| Sculptor Capital LP | 2.5% | 740,000 | -43% | 0.1% | $7,555,622 |
| TWO SIGMA INVESTMENTS, LP | 2.4% | 725,000 | 0% | 0.01% | $7,402,250 |
| Hudson Bay Capital Management LP | 2.4% | 700,000 | 0% | 0.04% | $7,154,000 |
| METEORA CAPITAL, LLC | 2.2% | 649,900 | +66% | 0.7% | $6,635,479 |
| Radcliffe Capital Management, L.P. | 2.1% | 611,522 | +87% | 0.39% | $6,258,928 |
| Driehaus Capital Management LLC | 1.9% | 573,083 | -14% | 0.04% | $5,851,177 |
| Jain Global LLC | 1.7% | 500,000 | 0% | 0.07% | $5,117,500 |
| Periscope Capital Inc. | 1.7% | 500,000 | +11% | 1.2% | $5,117,500 |
| PICTON MAHONEY ASSET MANAGEMENT | 1.7% | 500,000 | 0% | 0.07% | $5,118,000 |
| WOLVERINE ASSET MANAGEMENT LLC | 1.5% | 456,326 | +2914% | 0.07% | $4,659,225 |
| MOORE CAPITAL MANAGEMENT, LP | 1.5% | 450,000 | 0% | 0.09% | $4,594,635 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 1.4% | 400,000 | 0% | 0.02% | $4,094,000 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 1.2% | 357,750 | 0.21% | $3,652,628 | |
| MIZUHO SECURITIES USA LLC | 1.1% | 335,098 | -26% | 0.07% | $3,388,352 |