The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query BCSS owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/BCSS"
Use Arkolith to show who owns BCSS, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Empyrean Capital Partners, LP | $40.3M | 4.0M | ▲New +4.0M sh | Q1 2026 | |
| 2 | MOORE CAPITAL MANAGEMENT, LP | $15.2M | 1.5M | —Held | Q1 2026 | |
| 3 | DAVIDSON KEMPNER CAPITAL MANAGEMENT LP | $14.2M | 1.4M | —Held | Q1 2026 | |
| 4 | AQR Arbitrage LLC | $11.6M | 1.1M | ▼−3.0% Reduced · −35K sh | Q1 2026 | |
| 5 | Polar Asset Management Partners Inc. | $10.1M | 1.0M | —Held | Q1 2026 | |
| 6 | ARISTEIA CAPITAL, L.L.C. | $10.1M | 1.0M | —Held | Q1 2026 | |
| 7 | Ghisallo Capital Management LLC | $10.1M | 1.0M | —Held | Q1 2026 | |
| 8 | PICTON MAHONEY ASSET MANAGEMENT | $7.1M | 700K | —Held | Q1 2026 | |
| 9 | J. Goldman & Co LP | $7.1M | 700K | ▼−27% Reduced · −263K sh | Q1 2026 | |
| 10 | Shaolin Capital Management LLC | $5.7M | 567K | ▲+62% Added · +217K sh | Q1 2026 | |
| 11 | Lighthouse Investment Partners, LLC | $5.1M | 500K | —Held | Q1 2026 | |
| 12 | Verition Fund Management LLC | $4.8M | 473K | ▼−4.0% Reduced · −20K sh | Q1 2026 | |
| 13 | Magnetar Financial LLC | $4.5M | 450K | —Held | Q1 2026 | |
| 14 | CSS LLC/IL | $3.9M | 387K | ▲New +387K sh | Q1 2026 | |
| 15 | TENOR CAPITAL MANAGEMENT Co., L.P. | $3.5M | 350K | —Held | Q1 2026 | |
| 16 | Hudson Bay Capital Management LP | $3.1M | 311K | ▼−22% Reduced · −89K sh | Q1 2026 | |
| 17 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | $3.0M | 300K | —Held | Q1 2026 | |
| 18 | Centiva Capital, LP | $2.7M | 263K | ▲11× Added · +238K sh | Q1 2026 | |
| 19 | Jain Global LLC | $2.5M | 250K | —Held | Q1 2026 | |
| 20 | Schonfeld Strategic Advisors LLC | $2.5M | 250K | —Held | Q1 2026 | |
| 21 | HBK INVESTMENTS L P | $2.0M | 200K | —Held | Q1 2026 | |
| 22 | Clear Street Group Inc. | $1.9M | 184K | ▼−26% Reduced · −66K sh | Q1 2026 | |
| 23 | Context Capital Management, LLC | $1.5M | 150K | —Held | Q1 2026 | |
| 24 | First Trust Capital Management L.P. | $1.5M | 150K | ▲New +150K sh | Q1 2026 | |
| 25 | READYSTATE ASSET MANAGEMENT LP | $585K | 58K | ▲New +58K sh | Q1 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Dec 18, 2025 | Bain Capital GSS Investment Sponsor LLC | 10% Owner | Sell (S) | 30K | — |
| Company | Co-held by | Combined value |
|---|---|---|
| CANTOR EQUITY PARTNERS-CL ACEPF | 25 funds | $124.0M |
| CANTOR EQUITY PARTNERS-CL ACEPV | 24 funds | $85.4M |
| CANTOR EQUITY PARTNERS III-ACAEP | 23 funds | $84.0M |
| FUTURECREST ACQUISITION-CL AFCRS | 23 funds | $65.8M |
| TRAILBLAZER ACQUISITION-CL ABLZR | 22 funds | $79.6M |
| GORES HOLDINGS X INC-CL AGTEN | 21 funds | $146.8M |
| PROCAP ACQUISITION CORP - APCAP | 21 funds | $87.3M |
| DRUGS MADE IN AMERICA ACQUISDMII | 20 funds | $167.2M |
| EQV VENTURES ACQUISITION C-AEVAC | 20 funds | $137.5M |
| M3-BRIGADE ACQUISITION-CL AMBVI | 20 funds | $115.5M |
| CAL REDWOOD ACQUISIT-CL ACRAQ | 20 funds | $77.5M |
| WEN ACQUISITION CORP-AWENN | 20 funds | $77.4M |
Ranked by how many of BCSS's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for BCSS. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.