Archimedes Tech Spac PartnerARCIU
13F holders, Q2 2026 (June 30)At the end of Q2 2026, 15 institutions reported holding Archimedes Tech Spac Partner (ARCIU) in their 13F filings, down 14 from Q1 2026. 1 opened new positions and 3 sold out. The largest holders were LMR Partners LLP ($12.7M), Tudor Investment Corporation ($6.6M) and Toronto Dominion Bank ($6.6M). 2 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Archimedes Tech Spac Partner
- CUSIP
- G0453R121
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $110K |
| Exits | 3 | $5.4M |
All 13F filers, Q1 2026 → Q2 2026: 446,472 shares bought and 710,257 shares sold, net −263,785 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 15 holders
| LMR Partners LLP | 0.11% | No change | 1,250,000 | $12.7M |
| Tudor Investment Corporation | 0.03% | No change | 650,000 | $6.6M |
| Toronto Dominion Bank | 0.01% | Add +158.5% | 646,217 | $6.6M |
| OMERS ADMINISTRATION Corp | 0.03% | No change | 480,000 | $4.9M |
| Aristeia Capital, L.L.C. | 0.15% | Add +0.3% | 400,779 | $4.1M |
| Lineage Point Capital LP | 0.63% | Add +5.0% | 288,776 | $3.0M |
| BlueCrest Capital Management Ltd | 0.14% | No change | 275,000 | $2.8M |
| Millennium Management | 0.00% | Reduce -48.6% | 179,743 | $1.8M |
| Qube Research & Technologies Ltd | 0.00% | No change | 150,000 | $1.5M |
| Calamos Advisors LLC | 0.01% | No change | 124,000 | $1.3M |
| Westchester Capital Management, LLC | 0.05% | No change | 100,000 | $1.0M |
| Clear Street Group Inc. | 0.00% | Add +240.4% | 34,256 | $349K |
| HRT Financial LP | 0.00% | Add +0.0% | 25,000 | $256K |
| Glazer Capital, LLC | 0.00% | New | 10,523 | $110K |
| Tuttle Capital Management, LLC | 0.07% | Add +7.7% | 10,769 | $109K |
"% of holder's portfolio" is ARCIU's weight in each manager's 13F, not the share of Archimedes Tech Spac Partner the manager owns.