# ARCHIMEDES TECH SPAC PTNRS I (ARCI)

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

- Reporting holders: 52
- Reported value: $213.3M
- Shares held by institutions: 21,302,174 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 |
|---|---|---|---|---|
| [ADAGE CAPITAL PARTNERS GP, L.L.C.](https://holderbook.com/funds/1165408-adage-capital-partners-gp-l-l-c/) | $18.0M | 1,800,000 | 0.0% | 2 |
| [Verition Fund Management LLC](https://holderbook.com/funds/1454027-verition-fund-management-llc/) | $16.3M | 1,630,710 | 0.0% | 2 |
| [Linden Advisors LP](https://holderbook.com/funds/1279396-linden-advisors-lp/) | $12.0M | 1,200,000 | 0.1% | 2 |
| [Magnetar Financial LLC](https://holderbook.com/funds/1352851-magnetar-financial-llc/) | $12.0M | 1,200,000 | 0.1% | 2 |
| [Governors Lane LP](https://holderbook.com/funds/1644187-governors-lane-lp/) | $11.5M | 1,146,610 | 1.0% | 2 |
| [TENOR CAPITAL MANAGEMENT Co., L.P.](https://holderbook.com/funds/1346554-tenor-capital-management-co-l-p/) | $10.0M | 1,000,000 | 0.1% | 2 |
| [Alberta Investment Management Corp](https://holderbook.com/funds/1463559-alberta-investment-management-corp/) | $10.0M | 1,000,000 | 0.1% | 1 |
| [SONA ASSET MANAGEMENT (US) LLC](https://holderbook.com/funds/1856405-sona-asset-management-us-llc/) | $8.0M | 800,000 | 0.2% | 2 |
| [AQR Arbitrage LLC](https://holderbook.com/funds/1167456-aqr-arbitrage-llc/) | $7.6M | 757,612 | 0.1% | 1 |
| [HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND](https://holderbook.com/funds/1535845-healthcare-of-ontario-pension-plan-trust-fund/) | $5.5M | 550,000 | 0.0% | 2 |
| [Shaolin Capital Management LLC](https://holderbook.com/funds/1766806-shaolin-capital-management-llc/) | $5.1M | 510,386 | 0.2% | 2 |
| [RIVERNORTH CAPITAL MANAGEMENT, LLC](https://holderbook.com/funds/1447578-rivernorth-capital-management-llc/) | $5.1M | 500,000 | 0.2% | 1 |
| [Radcliffe Capital Management, L.P.](https://holderbook.com/funds/1218275-radcliffe-capital-management-l-p/) | $5.1M | 504,673 | 0.4% | 2 |
| [HBK INVESTMENTS L P](https://holderbook.com/funds/1011443-hbk-investments-l-p/) | $5.0M | 500,008 | 0.0% | 2 |
| [Polar Asset Management Partners Inc.](https://holderbook.com/funds/1326389-polar-asset-management-partners-inc/) | $5.0M | 500,000 | 0.1% | 2 |
| [MOORE CAPITAL MANAGEMENT, LP](https://holderbook.com/funds/1448574-moore-capital-management-lp/) | $5.0M | 500,000 | 0.1% | 2 |
| [GLAZER CAPITAL, LLC](https://holderbook.com/funds/1076809-glazer-capital-llc/) | $5.0M | 496,809 | 0.1% | 2 |
| [BNP PARIBAS FINANCIAL MARKETS](https://holderbook.com/funds/1166588-bnp-paribas-financial-markets/) | $4.9M | 492,372 | 0.0% | 1 |
| [D. E. Shaw & Co., Inc.](https://holderbook.com/funds/1009207-d-e-shaw-co-inc/) | $4.5M | 450,500 | 0.0% | 2 |
| [Meteora Capital, LLC](https://holderbook.com/funds/1905106-meteora-capital-llc/) | $4.2M | 424,489 | 0.4% | 2 |
| [Periscope Capital Inc.](https://holderbook.com/funds/1695320-periscope-capital-inc/) | $4.1M | 409,001 | 0.4% | 2 |
| [COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS](https://holderbook.com/funds/1083190-commonwealth-of-pennsylvania-public-school-empls-retrmt-sys/) | $4.0M | 400,000 | 0.0% | 1 |
| [K2 PRINCIPAL FUND, L.P.](https://holderbook.com/funds/1461790-k2-principal-fund-l-p/) | $3.1M | 308,333 | 0.2% | 2 |
| [MMCAP International Inc. SPC](https://holderbook.com/funds/1304857-mmcap-international-inc-spc/) | $3.0M | 300,000 | 0.3% | 1 |
| [Hudson Bay Capital Management LP](https://holderbook.com/funds/1393825-hudson-bay-capital-management-lp/) | $3.0M | 300,000 | 0.0% | 2 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 52 | $213.3M |
| Q1 2026 | 40 | $153.3M |
| Q2 2019 | 7 | $450.0K |
| Q1 2019 | 8 | $116.0K |
| Q4 2018 | 8 | $121.0K |