33 tracked 13F filers disclose a position in ARCI as of the latest SEC 13F filings, a combined $131.0M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $17.7M | 1.8M | ▲New +1.8M sh | Q1 2026 | |
| 2 | LINDEN ADVISORS LP | $11.8M | 1.2M | ▲New +1.2M sh | Q1 2026 | |
| 3 | Magnetar Financial LLC | $11.8M | 1.2M | ▲New +1.2M sh | Q1 2026 | |
| 4 | TENOR CAPITAL MANAGEMENT Co., L.P. | $9.8M | 1.0M | ▲New +1.0M sh | Q1 2026 | |
| 5 | Governors Lane LP | $9.8M | 1.0M | ▲New +1.0M sh | Q1 2026 | |
| 6 | Verition Fund Management LLC | $7.4M | 750K | ▲New +750K sh | Q1 2026 | |
| 7 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $5.4M | 550K | ▲New +550K sh | Q1 2026 | |
| 8 | Shaolin Capital Management LLC | $5.3M | 540K | ▲New +540K sh | Q1 2026 | |
| 9 | Polar Asset Management Partners Inc. | $4.9M | 500K | ▲New +500K sh | Q1 2026 | |
| 10 | MOORE CAPITAL MANAGEMENT, LP | $4.9M | 500K | ▲New +500K sh | Q1 2026 | |
| 11 | METEORA CAPITAL, LLC | $4.8M | 484K | ▲New +484K sh | Q1 2026 | |
| 12 | D. E. Shaw & Co., Inc. | $4.2M | 425K | ▲New +425K sh | Q1 2026 | |
| 13 | Radcliffe Capital Management, L.P. | $4.1M | 414K | ▲New +414K sh | Q1 2026 | |
| 14 | Hudson Bay Capital Management LP | $3.0M | 300K | ▲New +300K sh | Q1 2026 | |
| 15 | TWO SIGMA INVESTMENTS, LP | $2.7M | 274K | ▲New +274K sh | Q1 2026 | |
| 16 | HBK INVESTMENTS L P | $2.5M | 250K | ▲New +250K sh | Q1 2026 | |
| 17 | Ghisallo Capital Management LLC | $2.5M | 250K | ▲New +250K sh | Q1 2026 | |
| 18 | BERKLEY W R CORP | $2.4M | 248K | ▲New +248K sh | Q1 2026 | |
| 19 | Clear Street Group Inc. | $2.4M | 241K | ▲New +241K sh | Q1 2026 | |
| 20 | 683 Capital Management, LLC | $2.0M | 200K | ▲New +200K sh | Q1 2026 | |
| 21 | First Trust Capital Management L.P. | $2.0M | 200K | ▲New +200K sh | Q1 2026 | |
| 22 | Wealthspring Capital LLC | $1.6M | 161K | ▲New +161K sh | Q2 2026 | |
| 23 | Alpine Global Management, LLC | $1.5M | 150K | ▲New +150K sh | Q1 2026 | |
| 24 | StoneX Group Inc. | $1.1M | 110K | ▲New +110K sh | Q1 2026 | |
| 25 | Context Capital Management, LLC | $1.0M | 100K | —Held | Q2 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 24 funds opened a new position in ARCI, while 0 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| CANTOR EQUITY PARTNERS-CL ACEPV | 24 funds | $93.8M |
| CANTOR EQUITY PARTNERS-CL ACEPF | 23 funds | $159.2M |
| CRANE HARBOR ACQUISITIO-CL ACRAN | 22 funds | $166.3M |
| M3-BRIGADE ACQUISITION-CL AMBVI | 22 funds | $129.4M |
| MESHFLOW ACQUISITION CO-CL AMESH | 21 funds | $133.1M |
| TRAILBLAZER ACQUISITION-CL ABLZR | 21 funds | $122.5M |
| RANGE CAPITAL ACQUISIT CL ARNGT | 21 funds | $98.6M |
| EQV VENTURES ACQUISITION C-AEVAC | 20 funds | $184.5M |
| KRAKACQUISITION CORP-CL AKRAQ | 20 funds | $154.1M |
| REPUBLIC DIGITAL ACQUIS-CL ARDAG | 20 funds | $138.1M |
| M EVO GLOBAL ACQUISITIO-CL AMEVO | 20 funds | $133.9M |
| ALUSSA ENERGY ACQUISIT II-AALUB | 20 funds | $115.7M |
Ranked by how many of ARCI's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jan 26, 2026 | Long Long | Chief Executive Officer, Director, 10% Owner | Buy (P) | 390K | — |
| Jan 26, 2026 | Archimedes Tech SPAC Sponsors III LLC | 10% Owner | Buy (P) | 390K | — |
| Feb 5, 2021 | Johnson Virland A | Chief Financial Officer | Sell (S) | 4K | $36K |
| Nov 3, 2020 | Johnson Virland A | Chief Financial Officer | Sell (S) | 1K | $5K |
| Class | 13F holders | Value held |
|---|---|---|
| ARCIthis pageORD SHS | 33 funds | $131.0M |
| ARCIUUnit | 23 funds | $80.3M |
| ARCIWWarrant | 23 funds | $1.5M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for ARCI
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/ARCI/capital-change-brief"
Use Arkolith's capital_change_brief for ARCI. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ARCI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.