ARCHIMEDES TECH SPAC PARTNER (ATII)
Institutional ownership reported to the SEC as of Q2 2026, across 5 quarters.
Institutions report 17,698,734 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.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
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 |
| FNY Investment Advisers, LLC | $3.5M | 327,200 | 1.27% | new | NEW |
| Mint Tower Capital Management B.V. | $3.2M | 300,000 | 0.37% | 5q | HELD |
| 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 |
| SkyView Investment Advisors, LLC | $2.0M | 182,495 | 1.54% | new | NEW |
| 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 |
| Verition Fund Management LLC | $1.5M | 140,797 | 0.01% | 5q | -39.2%-$977.5K |
| 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 |
| GLAZER CAPITAL, LLC | $540.0K | 50,100 | 0.01% | 5q | -93.3%-$7.5M |
| Schonfeld Strategic Advisors LLC | $539.0K | 50,000 | 0.00% | 5q | -71.2%-$1.3M |
| HRT FINANCIAL LP | $508.0K | 47,190 | 0.00% | new | NEW |
| 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 |
| BFC Planning, Inc. | $38.9K | 3,607 | 0.00% | new | NEW |
| UBS Group AG | $17.9K | 1,658 | 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 |
Tender offers and delisting
Schedules TO, 13E-3 and 14D-9 and Form 25 filed in the last 180 days. Price a share is read from the filing itself where it states one plainly; a marker means we found no figure we could stand behind, and the reason is on it.
| Filed | What | Filed by | Price a share | Source |
|---|---|---|---|---|
| 2026-10-21 | Delisting notice from the exchange | Nasdaq Stock Market LLC | - | filing |
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 | 52 | $190.8M | 17,698,734 | 14 | 3 | 22 | 0.0% |
| Q1 2026 | 54 | $231.3M | 22,185,740 | 7 | 4 | 10 | 0.0% |
| Q4 2025 | 49 | $230.4M | 22,244,887 | 2 | 10 | 9 | 0.0% |
| Q3 2025 | 46 | $225.0M | 22,015,854 | 4 | 5 | 10 | 0.0% |
| Q2 2025 | 42 | $216.0M | 21,123,433 | 41 | 0 | 0 | 0.0% |