ARCHIMEDES TECH SPAC PARTNER (ATIIW)
Institutional ownership reported to the SEC as of Q2 2026, across 5 quarters.
Institutions report 8,367,108 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 |
|---|---|---|---|---|---|
| Harraden Circle Investments, LLC | $2.5M | 1,131,600 | 0.32% | 5q | -29.7%-$1.0M |
| ARISTEIA CAPITAL, L.L.C. | $1.7M | 788,491 | 0.02% | 5q | +530.8%+$1.4M |
| TENOR CAPITAL MANAGEMENT Co., L.P. | $1.6M | 750,000 | 0.02% | 5q | HELD |
| LMR Partners LLP | $1.3M | 613,701 | 0.01% | 5q | +44.4%+$413.2K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $1.1M | 500,000 | 0.00% | 5q | HELD |
| Linden Advisors LP | $1.1M | 504,138 | 0.01% | 5q | -41.4%-$765.4K |
| AQR Arbitrage LLC | $1.0M | 481,366 | 0.01% | 5q | HELD |
| Magnetar Financial LLC | $954.0K | 437,600 | 0.01% | 5q | -32.7%-$463.0K |
| Alberta Investment Management Corp | $821.2K | 375,000 | 0.00% | 5q | HELD |
| Decagon Asset Management LLP | $725.5K | 331,302 | 0.14% | new | NEW |
| D. E. Shaw & Co., Inc. | $626.8K | 287,500 | 0.00% | 5q | HELD |
| K2 PRINCIPAL FUND, L.P. | $614.8K | 280,718 | 0.05% | 5q | +17.0%+$89.4K |
| MOORE CAPITAL MANAGEMENT, LP | $492.7K | 225,000 | 0.01% | 5q | HELD |
| Shaolin Capital Management LLC | $397.8K | 181,640 | 0.02% | 5q | -63.7%-$697.2K |
| MILLENNIUM MANAGEMENT LLC | $370.9K | options only | 0.00% | 4q | OPTIONS |
| BNP PARIBAS FINANCIAL MARKETS | $354.6K | 161,927 | 0.00% | 4q | HELD |
| CSS LLC/IL | $332.2K | 151,718 | 0.01% | 5q | -68.9%-$735.6K |
| Sculptor Capital LP | $328.9K | 150,200 | 0.00% | new | NEW |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | $323.9K | 224,942 | 0.02% | 4q | HELD |
| Mint Tower Capital Management B.V. | $285.0K | 130,000 | 0.03% | 5q | -13.3%-$43.8K |
| WHITEBOX ADVISORS LLC | $273.7K | 125,000 | 0.00% | 5q | HELD |
| Alpine Global Management, LLC | $155.6K | 71,039 | 0.03% | new | NEW |
| DLD Asset Management, LP | $152.0K | 69,400 | 0.01% | 3q | -30.6%-$67.0K |
| MMCAP International Inc. SPC | $136.9K | 62,500 | 0.01% | 4q | HELD |
| Clear Street Group Inc. | $131.4K | 60,000 | 0.00% | 4q | -60.9%-$205.0K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $106.4K | 48,825 | 0.00% | new | NEW |
| Fort Baker Capital Management LP | $90.2K | 41,177 | 0.01% | new | NEW |
| Periscope Capital Inc. | $87.6K | 40,000 | 0.01% | 5q | -79.9%-$347.3K |
| Hudson Bay Capital Management LP | $87.2K | 39,994 | 0.00% | 5q | HELD |
| Lineage Point Capital LP | $78.3K | 35,771 | 0.02% | 2q | -59.2%-$113.7K |
| Centiva Capital, LP | $68.6K | 31,450 | 0.00% | new | NEW |
| Schonfeld Strategic Advisors LLC | $65.7K | 30,000 | 0.00% | 5q | -63.5%-$114.3K |
| Thomas J. Herzfeld Advisors, Inc. | $10.9K | 5,000 | 0.00% | new | NEW |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | $219 | 109 | 0.00% | 5q | -98.9%-$20.1K |
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 | 34 | $18.5M | 8,367,108 | 7 | 3 | 12 | 2.0% |
| Q1 2026 | 37 | $5.2M | 10,098,971 | 2 | 3 | 5 | 2.4% |
| Q4 2025 | 37 | $5.7M | 10,295,904 | 2 | 5 | 7 | 2.4% |
| Q3 2025 | 35 | $3.8M | 9,852,309 | 5 | 4 | 7 | 2.6% |
| Q2 2025 | 35 | $3.8M | 9,776,140 | 34 | 0 | 0 | 0.0% |