# ARCHIMEDES TECH SPAC PARTNER (ATIIW)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/ATIIW/

- Reporting holders: 34
- Reported value: $18.5M
- Shares held by institutions: 8,367,108 of 29,590,000 outstanding
- Held through calls: 2.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [Harraden Circle Investments, LLC](https://holderbook.com/funds/1910592-harraden-circle-investments-llc/) | $2.5M | 1,131,600 | 0.3% | 5 |
| [ARISTEIA CAPITAL, L.L.C.](https://holderbook.com/funds/1080171-aristeia-capital-l-l-c/) | $1.7M | 788,491 | 0.0% | 5 |
| [TENOR CAPITAL MANAGEMENT Co., L.P.](https://holderbook.com/funds/1346554-tenor-capital-management-co-l-p/) | $1.6M | 750,000 | 0.0% | 5 |
| [LMR Partners LLP](https://holderbook.com/funds/1578621-lmr-partners-llp/) | $1.3M | 613,701 | 0.0% | 5 |
| [HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND](https://holderbook.com/funds/1535845-healthcare-of-ontario-pension-plan-trust-fund/) | $1.1M | 500,000 | 0.0% | 5 |
| [Linden Advisors LP](https://holderbook.com/funds/1279396-linden-advisors-lp/) | $1.1M | 504,138 | 0.0% | 5 |
| [AQR Arbitrage LLC](https://holderbook.com/funds/1167456-aqr-arbitrage-llc/) | $1.0M | 481,366 | 0.0% | 5 |
| [Magnetar Financial LLC](https://holderbook.com/funds/1352851-magnetar-financial-llc/) | $954.0K | 437,600 | 0.0% | 5 |
| [Alberta Investment Management Corp](https://holderbook.com/funds/1463559-alberta-investment-management-corp/) | $821.2K | 375,000 | 0.0% | 5 |
| [Decagon Asset Management LLP](https://holderbook.com/funds/1950677-decagon-asset-management-llp/) | $725.5K | 331,302 | 0.1% | 1 |
| [D. E. Shaw & Co., Inc.](https://holderbook.com/funds/1009207-d-e-shaw-co-inc/) | $626.8K | 287,500 | 0.0% | 5 |
| [K2 PRINCIPAL FUND, L.P.](https://holderbook.com/funds/1461790-k2-principal-fund-l-p/) | $614.8K | 280,718 | 0.0% | 5 |
| [MOORE CAPITAL MANAGEMENT, LP](https://holderbook.com/funds/1448574-moore-capital-management-lp/) | $492.7K | 225,000 | 0.0% | 5 |
| [Shaolin Capital Management LLC](https://holderbook.com/funds/1766806-shaolin-capital-management-llc/) | $397.8K | 181,640 | 0.0% | 5 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $370.9K | 0 | 0.0% | 4 |
| [BNP PARIBAS FINANCIAL MARKETS](https://holderbook.com/funds/1166588-bnp-paribas-financial-markets/) | $354.6K | 161,927 | 0.0% | 4 |
| [CSS LLC/IL](https://holderbook.com/funds/1103646-css-llc-il/) | $332.2K | 151,718 | 0.0% | 5 |
| [Sculptor Capital LP](https://holderbook.com/funds/1054587-sculptor-capital-lp/) | $328.9K | 150,200 | 0.0% | 1 |
| [RIVERNORTH CAPITAL MANAGEMENT, LLC](https://holderbook.com/funds/1447578-rivernorth-capital-management-llc/) | $323.9K | 224,942 | 0.0% | 4 |
| [Mint Tower Capital Management B.V.](https://holderbook.com/funds/1666606-mint-tower-capital-management-b-v/) | $285.0K | 130,000 | 0.0% | 5 |
| [WHITEBOX ADVISORS LLC](https://holderbook.com/funds/1257391-whitebox-advisors-llc/) | $273.7K | 125,000 | 0.0% | 5 |
| [Alpine Global Management, LLC](https://holderbook.com/funds/1581655-alpine-global-management-llc/) | $155.6K | 71,039 | 0.0% | 1 |
| [DLD Asset Management, LP](https://holderbook.com/funds/1578299-dld-asset-management-lp/) | $152.0K | 69,400 | 0.0% | 3 |
| [MMCAP International Inc. SPC](https://holderbook.com/funds/1304857-mmcap-international-inc-spc/) | $136.9K | 62,500 | 0.0% | 4 |
| [Clear Street Group Inc.](https://holderbook.com/funds/1881567-clear-street-group-inc/) | $131.4K | 60,000 | 0.0% | 4 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 34 | $18.5M |
| Q1 2026 | 37 | $5.2M |
| Q4 2025 | 37 | $5.7M |
| Q3 2025 | 35 | $3.8M |
| Q2 2025 | 35 | $3.8M |