ARCHIMEDES TECH SPAC PARTNER (ATII)
Institutional ownership reported to the SEC as of Q2 2026, across 5 quarters.
46
Reporting holders
$182.5M
Reported value
57.2%
Of shares outstanding
0.0%
Held as options
-5
Holder change
Institutions report 16,928,939 shares against 29,590,000 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| TENOR CAPITAL MANAGEMENT Co., L.P. | $14.7M | 1,367,830 | 0.21% | 5q | -8.8%-$1.4M |
| Fort Baker Capital Management LP | $14.3M | 1,330,746 | 1.05% | new | NEW |
| Magnetar Financial LLC | $14.0M | 1,297,302 | 0.13% | 5q | HELD |
| D. E. Shaw & Co., Inc. | $12.3M | 1,138,500 | 0.01% | 5q | HELD |
| Decagon Asset Management LLP | $10.1M | 937,829 | 1.93% | new | NEW |
| Linden Advisors LP | $9.1M | 848,273 | 0.05% | 5q | -15.2%-$1.6M |
| Ghisallo Capital Management LLC | $8.6M | 800,000 | 0.17% | 5q | HELD |
| TWO SIGMA INVESTMENTS, LP | $7.8M | 725,000 | 0.01% | 5q | HELD |
| Hudson Bay Capital Management LP | $7.5M | 700,000 | 0.02% | 5q | HELD |
| Shay Capital LLC | $6.7M | 623,687 | 0.43% | new | NEW |
| Governors Lane LP | $6.5M | 604,857 | 0.54% | 5q | -20.4%-$1.7M |
| AQR Arbitrage LLC | $6.4M | 590,262 | 0.09% | 5q | -35.9%-$3.6M |
| Sculptor Capital LP | $6.0M | 552,619 | 0.05% | 5q | -8.0%-$517.7K |
| K2 PRINCIPAL FUND, L.P. | $5.7M | 526,227 | 0.42% | 5q | +498.7%+$4.7M |
| LMR Partners LLP | $5.2M | 478,978 | 0.02% | 5q | -43.6%-$4.0M |
| Radcliffe Capital Management, L.P. | $5.2M | 478,061 | 0.39% | 5q | -27.7%-$2.0M |
| MOORE CAPITAL MANAGEMENT, LP | $4.9M | 450,000 | 0.07% | 5q | HELD |
| Alberta Investment Management Corp | $4.3M | 400,000 | 0.02% | 5q | -46.7%-$3.8M |
| Verition Fund Management LLC | $3.0M | 281,594 | 0.01% | 5q | +21.7%+$540.3K |
| CITADEL ADVISORS LLC | $2.7M | 250,266 | 0.00% | 2q | +2311.7%+$2.6M |
| WHITEBOX ADVISORS LLC | $2.7M | 250,000 | 0.04% | 5q | HELD |
| Harraden Circle Investments, LLC | $2.5M | 234,661 | 0.32% | new | NEW |
| GOLDMAN SACHS GROUP INC | $2.2M | 205,090 | 0.00% | 5q | -37.4%-$1.3M |
| ARISTEIA CAPITAL, L.L.C. | $2.2M | 200,000 | 0.03% | 5q | -20.0%-$539.0K |
| L1 Global Manager Pty Ltd | $2.2M | 200,000 | 1.52% | 3q | HELD |
| DLD Asset Management, LP | $2.1M | 195,453 | 0.14% | 5q | +30.3%+$490.0K |
| Jain Global LLC | $2.0M | 185,108 | 0.01% | 5q | -63.0%-$3.4M |
| CANTOR FITZGERALD, L. P. | $1.9M | 176,566 | 0.01% | new | NEW |
| Periscope Capital Inc. | $1.9M | 175,000 | 0.17% | 5q | -50.4%-$1.9M |
| MMCAP International Inc. SPC | $1.3M | 125,000 | 0.11% | 4q | HELD |
| TUDOR INVESTMENT CORP ET AL | $1.3M | 123,842 | 0.00% | new | NEW |
| TORONTO DOMINION BANK | $889.9K | 82,550 | 0.00% | 5q | -87.3%-$6.1M |
| Baird Financial Group, Inc. | $846.2K | 78,500 | 0.00% | 3q | HELD |
| Shaolin Capital Management LLC | $821.1K | 76,171 | 0.04% | 5q | -71.9%-$2.1M |
| MILLENNIUM MANAGEMENT LLC | $748.0K | 69,384 | 0.00% | 4q | -77.5%-$2.6M |
| Schonfeld Strategic Advisors LLC | $539.0K | 50,000 | 0.00% | 5q | -71.2%-$1.3M |
| Clear Street Group Inc. | $269.5K | 25,000 | 0.00% | 4q | -67.7%-$565.4K |
| BNP PARIBAS FINANCIAL MARKETS | $256.5K | 23,790 | 0.00% | 2q | -37.0%-$150.4K |
| MIZUHO SECURITIES USA LLC | $202.5K | 19,469 | 0.00% | 5q | HELD |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | $189.1K | 17,497 | 0.00% | new | NEW |
| READYSTATE ASSET MANAGEMENT LP | $135.1K | 12,528 | 0.00% | 4q | -91.6%-$1.5M |
| GEODE CAPITAL MANAGEMENT, LLC | $119.7K | 11,102 | 0.00% | 2q | HELD |
| EverSource Wealth Advisors, LLC | $91.6K | 8,500 | 0.00% | new | NEW |
| UBS Group AG | $17.9K | 1,658 | 0.00% | new | NEW |
| FNY Investment Advisers, LLC | $3.5K | 327,200 | 1.27% | new | NEW |
| Mint Tower Capital Management B.V. | $3.2K | 300,000 | 0.37% | 5q | HELD |
| GLAZER CAPITAL, LLC | $540 | 50,100 | 0.01% | 5q | -93.3%-$7.5K |
| HRT FINANCIAL LP | $508 | 47,190 | 0.00% | new | NEW |
| MORGAN STANLEY | $377 | 35 | 0.00% | 5q | -43.5% |
| Caitong International Asset Management Co., Ltd | $43 | 4 | 0.00% | new | NEW |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 46 | $182.5M | 16,928,939 | 10 | 4 | 20 | 0.0% |
| Q1 2026 | 51 | $219.8M | 21,082,054 | 6 | 4 | 9 | 0.0% |
| Q4 2025 | 47 | $218.4M | 21,080,584 | 2 | 10 | 8 | 0.0% |
| Q3 2025 | 43 | $207.9M | 20,340,767 | 4 | 5 | 10 | 0.0% |
| Q2 2025 | 39 | $198.9M | 19,448,346 | 38 | 0 | 0 | 0.0% |