Archimedes Tech SPAC Partners III Co.
ARCI- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002083910
No open-market purchases or sales by Archimedes Tech SPAC Partners III Co. insiders were filed in the last 90 days; 52 institutions reported holding it in 13F filings for Q2 2026, worth $202.6M in total; no superinvestor holds it.
Q2 2026 vs. Q1 2026
How the institutions holding Archimedes Tech SPAC Partners III Co. changed between Q1 2026 and Q2 2026.
All holders in Q2 2026All holders in Q1 2026
| Measure | Q1 2026 | Q2 2026 | Change |
|---|---|---|---|
| Holders | 40 | 52 | +12 |
| Shares | 15.6M | 20.2M | +4.67M (+30.0%) |
| Value | $153.3M | $202.6M | +$49.3M (+32.2%) |
New holders (16)
Institutions that held Archimedes Tech SPAC Partners III Co. at the end of Q2 2026 but not at the end of Q1 2026.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Alberta Investment Management Corp | 1,000,000 | $10.0M | 0.06% |
| CNH Partners LLC | 757,612 | $7.58M | 0.11% |
| Rivernorth Capital Management, LLC | 500,000 | $5.08M | 0.24% |
| BNP Paribas Arbitrage, SA | 492,372 | $4.93M | 0.00% |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 400,000 | $4.00M | 0.02% |
| MMCAP International Inc. SPC | 300,000 | $3.00M | 0.25% |
| Schonfeld Strategic Advisors LLC | 297,404 | $2.98M | 0.02% |
| Mangrove Partners | 200,000 | $2.00M | 0.13% |
| Wealthspring Capital LLC | 160,960 | $1.61M | 0.36% |
| Millennium Management LLC | 150,000 | $1.50M | 0.00% |
| Picton Mahoney Asset Management | 149,996 | $1.50M | 0.01% |
| Boothbay Fund Management, LLC | 95,000 | $951.0K | 0.02% |
| Centiva Capital, LP | 70,050 | $701.2K | 0.02% |
| Bulldog Investors, LLP | 64,500 | $645.6K | 0.14% |
| Abc Arbitrage SA | 35,000 | $350.4K | 0.04% |
| SRS Capital Advisors, Inc. | 1,500 | $15.0K | 0.00% |
Sold out (4)
Institutions that held Archimedes Tech SPAC Partners III Co. at the end of Q1 2026 and filed for Q2 2026 without it.
| Institution | Shares, Q1 2026 | Value, Q1 2026 |
|---|---|---|
| Alpine Global Management, LLC | 150,000 | $1.48M |
| Virtu Financial LLC | 90,734 | $894.0K |
| Parallax Volatility Advisers, L.P. | 50,000 | $494.5K |
| Royal Bank of Canada | 2,700 | $27.0K |