48 tracked 13F filers disclose a position in OBA as of the latest SEC 13F filings, a combined $182.1M 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 | Magnetar Financial LLC | $12.7M | 1.3M | —Held | Q1 2026 | |
| 2 | D. E. Shaw & Co., Inc. | $12.6M | 1.2M | —Held | Q1 2026 | |
| 3 | Westchester Capital Management, LLC | $11.3M | 1.1M | ▲+22% Added · +200K sh | Q1 2026 | |
| 4 | PICTON MAHONEY ASSET MANAGEMENT | $10.1M | 1.0M | —Held | Q1 2026 | |
| 5 | Karpus Management, Inc. | $8.7M | 862K | ▲+12% Added · +96K sh | Q1 2026 | |
| 6 | AQR Arbitrage LLC | $8.2M | 806K | ▼−3.7% Reduced · −31K sh | Q1 2026 | |
| 7 | TWO SIGMA INVESTMENTS, LP | $7.0M | 691K | —Held | Q1 2026 | |
| 8 | ARISTEIA CAPITAL, L.L.C. | $6.6M | 650K | ▲+30% Added · +150K sh | Q1 2026 | |
| 9 | Radcliffe Capital Management, L.P. | $6.3M | 625K | —Held | Q1 2026 | |
| 10 | TIG Advisors, LLC | $6.1M | 602K | —Held | Q1 2026 | |
| 11 | TENOR CAPITAL MANAGEMENT Co., L.P. | $6.1M | 600K | —Held | Q1 2026 | |
| 12 | Logan Stone Capital, LLC | $5.1M | 502K | —Held | Q1 2026 | |
| 13 | Hudson Bay Capital Management LP | $5.1M | 500K | —Held | Q1 2026 | |
| 14 | Jain Global LLC | $5.1M | 500K | —Held | Q1 2026 | |
| 15 | LINDEN ADVISORS LP | $5.1M | 500K | —Held | Q1 2026 | |
| 16 | Polar Asset Management Partners Inc. | $5.1M | 500K | —Held | Q1 2026 | |
| 17 | Ghisallo Capital Management LLC | $5.1M | 500K | —Held | Q1 2026 | |
| 18 | Verition Fund Management LLC | $5.1M | 499K | ▼−17% Reduced · −100K sh | Q1 2026 | |
| 19 | Wealthspring Capital LLC | $4.6M | 451K | ▼−0.3% Reduced · −1K sh | Q2 2026 | |
| 20 | Shaolin Capital Management LLC | $4.4M | 437K | ▲+35% Added · +112K sh | Q1 2026 | |
| 21 | BERKLEY W R CORP | $4.3M | 425K | —Held | Q1 2026 | |
| 22 | MILLENNIUM MANAGEMENT LLC | $4.1M | 400K | —Held | Q1 2026 | |
| 23 | Context Capital Management, LLC | $3.1M | 300K | —Held | Q2 2026 | |
| 24 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $3.0M | 300K | —Held | Q1 2026 | |
| 25 | BNP PARIBAS FINANCIAL MARKETS | $3.0M | 297K | ▲+13% Added · +34K 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.
Last quarter, 1 fund opened a new position in OBA and 5 added to an existing one, while 3 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 |
|---|---|---|
| PIONEER ACQUISITION I-CL APACH | 24 funds | $99.5M |
| BLUE WATER ACQUISITION C-ABLUW | 23 funds | $92.5M |
| FIGX CAPITAL ACQUISITION C-AFIGX | 23 funds | $56.5M |
| LIGHTWAVE ACQUISITION CORP-ALWAC | 22 funds | $98.3M |
| HIGHVIEW MERGER CORP-CL AHVMC | 22 funds | $79.8M |
| AXIOM INTELLIGENCE-CL AAXIN | 22 funds | $78.3M |
| D. BORAL ARC ACQUISIT - CL ABCAR | 22 funds | $67.0M |
| CHENGHE ACQUISITION II-CL ACHEC | 22 funds | $64.7M |
| SOULPOWER ACQUISITION CO-ASOUL | 21 funds | $117.4M |
| APEX TREASURY CORP-CL AAPXT | 21 funds | $111.0M |
| M3-BRIGADE ACQUISITION-CL AMBVI | 21 funds | $101.6M |
| CAL REDWOOD ACQUISIT-CL ACRAQ | 21 funds | $90.9M |
Ranked by how many of OBA's institutional holders also hold each name, a cross-fund conviction signal.
No open-market insider transactions on file yet. Grants, gifts, and exercises live on the full insider page.
No filings captured for this ticker in the live stream yet.
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/OBA/capital-change-brief"
Use Arkolith's capital_change_brief for OBA. 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 OBA. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.