Archimedes Tech SPAC Partners III Co.
ARCIW- 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; 41 institutions reported holding it in 13F filings for Q2 2026, worth $3.21M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Archimedes Tech SPAC Partners III Co. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 41
- +12 vs. Q1 2026
- Shares held
- 4.66M
- +1.09M (+30.7%) vs. Q1 2026
- Total value
- $3.21M
- +$1.31M (+69.0%) vs. Q1 2026
- New holders
- 15
- 5 more added
- Sold out
- 3
- 6 more reduced
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ARCIW on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 41 | $3.21M |
| Q1 2026 | 29 | $1.90M |
| Q4 2025 | 0 | $0 |
| Q3 2025 | 0 | $0 |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Archimedes Tech SPAC Partners III Co.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Royal Bank of Canada | 375 | $0 | 0.00% | −300−44.4% | Reduced |
| UBS Group AG | 57 | $29 | 0.00% | +57 | New |
| SRS Capital Advisors, Inc. | 375 | $188 | 0.00% | +375 | New |
| Bulldog Investors, LLP | 15,000 | $11.3K | 0.00% | +15,000 | New |
| Context Capital Management, LLC | 25,000 | $15.9K | 0.00% | 00.0% | Unchanged |
| Whitebox Advisors LLC | 25,000 | $18.8K | 0.00% | 00.0% | Unchanged |
| Alpine Global Management, LLC | 40,200 | $20.1K | 0.00% | +2,700+7.2% | Added |
| Wealthspring Capital LLC | 40,870 | $20.5K | 0.00% | +40,870 | New |
| Schonfeld Strategic Advisors LLC | 40,000 | $25.0K | 0.00% | +40,000 | New |
| Mint Tower Capital Management B.V. | 37,500 | $28.0K | 0.00% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 37,499 | $28.1K | 0.00% | +37,499 | New |
| Glazer Capital, LLC | 50,000 | $31.0K | 0.00% | −68,814−57.9% | Reduced |
| DLD Asset Management, LP | 42,499 | $31.9K | 0.00% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 50,000 | $37.5K | 0.00% | 00.0% | Unchanged |
| Parallax Volatility Advisers, L.P. | 50,000 | $37.5K | 0.00% | +50,000 | New |
| Clear Street Group Inc. | 55,206 | $41.4K | 0.00% | −3,094−5.3% | Reduced |
| Meteora Capital, LLC | 83,985 | $42.1K | 0.00% | −39,735−32.1% | Reduced |
| HBK Investments L P | 62,501 | $46.9K | 0.00% | 00.0% | Unchanged |
| Radcliffe Capital Management, L.P. | 81,385 | $50.9K | 0.00% | +43+0.1% | Added |
| MMCAP International Inc. SPC | 75,000 | $56.3K | 0.00% | +75,000 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 100,000 | $62.5K | 0.00% | +100,000 | New |
| Periscope Capital Inc. | 101,100 | $63.2K | 0.01% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 123,093 | $77.0K | 0.00% | +123,093 | New |
| D. E. Shaw & Co., Inc. | 106,250 | $79.7K | 0.00% | 00.0% | Unchanged |
| Rivernorth Capital Management, LLC | 125,000 | $81.3K | 0.00% | +125,000 | New |
| Shaolin Capital Management LLC | 114,720 | $86.0K | 0.00% | +4,609+4.2% | Added |
| Moore Capital Management, LP | 125,000 | $93.8K | 0.00% | 00.0% | Unchanged |
| Polar Asset Management Partners Inc. | 129,300 | $97.0K | 0.00% | +4,300+3.4% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 137,500 | $103.1K | 0.00% | 00.0% | Unchanged |
| Verition Fund Management LLC | 187,200 | $140.4K | 0.00% | −300−0.2% | Reduced |
| CNH Partners LLC | 189,403 | $142.1K | 0.00% | +189,403 | New |
| Adage Capital Partners GP, L.L.C. | 200,000 | $150.0K | 0.00% | −175,000−46.7% | Reduced |
| Sona Asset Management (US) LLC | 200,000 | $150.0K | 0.01% | 00.0% | Unchanged |
| K2 Principal Fund, L.P. | 308,837 | $154.4K | 0.01% | +27,060+9.6% | Added |
| Governors Lane LP | 250,000 | $156.4K | 0.02% | 00.0% | Unchanged |
| Tenor Capital Management Co., L.P. | 250,000 | $187.5K | 0.00% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 250,000 | $187.5K | 0.00% | +250,000 | New |
| Linden Advisors LP | 299,999 | $187.6K | 0.00% | 00.0% | Unchanged |
| Magnetar Financial LLC | 300,000 | $225.0K | 0.00% | 00.0% | Unchanged |
| Centiva Capital, LP | 324,439 | $243.3K | 0.01% | +324,439 | New |
| Boothbay Fund Management, LLC | 25,000 | – | – | +25,000 | New |
| L1 Global Manager Pty Ltd | 0 | $0 | 0.00% | −18,750−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −19,000−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −15,001−100.0% | Sold out |