# ARCHIMEDES TECH SPAC PTNRS I (ARCIU)

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

- Reporting holders: 15
- Reported value: $47.3M
- Shares held by institutions: 4,625,063 of 35,262,000 outstanding
- Held through calls: 0.0%
- 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 |
|---|---|---|---|---|
| [LMR Partners LLP](https://holderbook.com/funds/1578621-lmr-partners-llp/) | $12.7M | 1,250,000 | 0.0% | 2 |
| [TUDOR INVESTMENT CORP ET AL](https://holderbook.com/funds/923093-tudor-investment-corp-et-al/) | $6.6M | 650,000 | 0.0% | 2 |
| [TORONTO DOMINION BANK](https://holderbook.com/funds/947263-toronto-dominion-bank/) | $6.6M | 646,217 | 0.0% | 2 |
| [OMERS ADMINISTRATION Corp](https://holderbook.com/funds/1053321-omers-administration-corp/) | $4.9M | 480,000 | 0.0% | 2 |
| [ARISTEIA CAPITAL, L.L.C.](https://holderbook.com/funds/1080171-aristeia-capital-l-l-c/) | $4.1M | 400,779 | 0.1% | 2 |
| [Lineage Point Capital LP](https://holderbook.com/funds/2093311-lineage-point-capital-lp/) | $3.0M | 288,776 | 0.6% | 2 |
| [BlueCrest Capital Management Ltd](https://holderbook.com/funds/1610880-bluecrest-capital-management-ltd/) | $2.8M | 275,000 | 0.1% | 2 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $1.8M | 179,743 | 0.0% | 2 |
| [Qube Research & Technologies Ltd](https://holderbook.com/funds/1729829-qube-research-technologies-ltd/) | $1.5M | 150,000 | 0.0% | 2 |
| [Calamos Advisors LLC](https://holderbook.com/funds/1316507-calamos-advisors-llc/) | $1.3M | 124,000 | 0.0% | 2 |
| [Westchester Capital Management, LLC](https://holderbook.com/funds/1512805-westchester-capital-management-llc/) | $1.0M | 100,000 | 0.0% | 2 |
| [Clear Street Group Inc.](https://holderbook.com/funds/1881567-clear-street-group-inc/) | $349.1K | 34,256 | 0.0% | 2 |
| [HRT FINANCIAL LP](https://holderbook.com/funds/1475597-hrt-financial-lp/) | $256.0K | 25,000 | 0.0% | 2 |
| [GLAZER CAPITAL, LLC](https://holderbook.com/funds/1076809-glazer-capital-llc/) | $110.0K | 10,523 | 0.0% | 1 |
| [Tuttle Capital Management, LLC](https://holderbook.com/funds/1581641-tuttle-capital-management-llc/) | $109.4K | 10,769 | 0.1% | 2 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 15 | $47.3M |
| Q1 2026 | 29 | $91.0M |