| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BARCLAYS PLC | 3.9% | -40% | $11,899,392 | -$7,415,843 | 1,148,590 | -38% | Barclays PLC | 31 Dec 2025 |
As of 31 Dec 2025, 25 institutional investors reported holding 7,503,838 shares of Archimedes Tech SPAC Partners II Co. - COMMON-STOCK (ATII). This represents 25% of the company’s total 29,602,835 outstanding shares.
The largest institutional shareholders of Archimedes Tech SPAC Partners II Co. - COMMON-STOCK (ATII) together control 25% 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 |
|---|---|---|---|---|---|
| Westchester Capital Management, LLC | 3.1% | 907,144 | +0.79% | 0.44% | $9,398,012 |
| Glazer Capital, LLC | 2.9% | 864,303 | -1.2% | 0.24% | $8,954,000 |
| Hudson Bay Capital Management LP | 2.4% | 700,000 | 0% | 0.04% | $7,252,000 |
| Sculptor Capital LP | 2% | 600,646 | -19% | 0.08% | $6,222,693 |
| PICTON MAHONEY ASSET MANAGEMENT | 1.7% | 500,000 | 0% | 0.06% | $5,180,000 |
| Periscope Capital Inc. | 1.5% | 448,100 | -10% | 0.9% | $4,642,316 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 1.4% | 400,000 | 0% | 0.02% | $4,144,000 |
| WOLVERINE ASSET MANAGEMENT LLC | 1.2% | 355,354 | -22% | 0.05% | $3,681,467 |
| GOLDMAN SACHS GROUP INC | 1.1% | 323,854 | 0% | 0% | $3,355,127 |
| MIZUHO SECURITIES USA LLC | 1% | 303,827 | -9.3% | 0.05% | $3,114,227 |
| Mint Tower Capital Management B.V. | 1% | 300,000 | 0% | 0.39% | $3,108,000 |
| Centiva Capital, LP | 0.96% | 285,515 | 0% | 0.18% | $2,957,935 |
| Verition Fund Management LLC | 0.78% | 231,470 | -8% | 0.01% | $2,398,029 |
| BERKLEY W R CORP | 0.77% | 228,206 | 0% | 0.13% | $2,364,214 |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.68% | 200,000 | 0% | 0.24% | $2,072,000 |
| L1 Global Manager Pty Ltd | 0.68% | 200,000 | 0% | 1.4% | $2,072,000 |
| DLD Asset Management, LP | 0.68% | 200,000 | +33% | 0.22% | $2,072,000 |
| MMCAP International Inc. SPC | 0.42% | 125,000 | 0% | 0.13% | $1,295,000 |
| GRITSTONE ASSET MANAGEMENT LLC | 0.33% | 99,081 | 0% | 0.98% | $1,026,479 |
| K2 PRINCIPAL FUND, L.P. | 0.3% | 87,900 | -23% | 0.17% | $910,644 |
| Baird Financial Group, Inc. | 0.27% | 78,500 | 0% | $813,260 | |
| StoneX Group Inc. | 0.17% | 50,613 | 0.02% | $524,351 | |
| Warberg Asset Management LLC | 0.03% | 10,000 | 0% | 0.03% | $103,600 |
| Clear Street Group Inc. | 0.01% | 4,195 | -86% | 0% | $43,460 |
| MORGAN STANLEY | 0% | 130 | +155% | 0% | $1,347 |