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 OSBC 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/OSBC"
Use Arkolith to show who owns OSBC, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $83.2M | 4.1M | ▼−0.7% Reduced · −30K sh | Q1 2026 | |
| 2 | VANGUARD GROUP INC | $63.9M | 3.3M | ▲+0.3% Added · +8K sh | Q4 2025 | |
| 3 | DIMENSIONAL FUND ADVISORS LP | $48.2M | 2.4M | ▲+5.7% Added · +128K sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $45.4M | 2.3M | ▲New +2.3M sh | Q1 2026 | |
| 5 | Davis Asset Management, L.P. | $36.3M | 1.8M | ▲+3.1% Added · +54K sh | Q1 2026 | |
| 6 | GOLDMAN SACHS GROUP INC | $34.1M | 1.7M | ▲+34% Added · +428K sh | Q1 2026 | |
| 7 | STATE STREET CORP | $32.2M | 1.6M | ▲+3.9% Added · +60K sh | Q1 2026 | |
| 8 | AMERICAN CENTURY COMPANIES INC | $32.1M | 1.6M | ▲+8.2% Added · +121K sh | Q1 2026 | |
| 9 | Boston Partners | $29.3M | 1.4M | ▲+77% Added · +627K sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $25.9M | 1.3M | ▼−6.1% Reduced · −83K sh | Q1 2026 | |
| 11 | KENNEDY CAPITAL MANAGEMENT LLC | $25.6M | 1.3M | ▲+0.1% Added · +1K sh | Q1 2026 | |
| 12 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | $17.7M | 879K | ▼−1.5% Reduced · −13K sh | Q1 2026 | |
| 13 | NORTHERN TRUST CORP | $15.4M | 764K | ▼−13% Reduced · −117K sh | Q1 2026 | |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | $14.4M | 712K | ▲New +712K sh | Q1 2026 | |
| 15 | JPMORGAN CHASE & CO | $13.9M | 701K | ▼−18% Reduced · −158K sh | Q1 2026 | |
| 16 | ALLIANCEBERNSTEIN L.P. | $13.5M | 691K | ▲+0.7% Added · +5K sh | Q1 2026 | |
| 17 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $8.8M | 438K | ▲+2.5% Added · +11K sh | Q1 2026 | |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $8.7M | 431K | ▼−1.5% Reduced · −7K sh | Q1 2026 | |
| 19 | Nuveen, LLC | $8.5M | 420K | ▲+1.0% Added · +4K sh | Q1 2026 | |
| 20 | AQR CAPITAL MANAGEMENT LLC | $7.9M | 392K | ▼−12% Reduced · −55K sh | Q1 2026 | |
| 21 | Bank of New York Mellon Corp | $6.8M | 337K | ▼−2.0% Reduced · −7K sh | Q1 2026 | |
| 22 | VANGUARD FIDUCIARY TRUST CO | $6.8M | 335K | ▲New +335K sh | Q1 2026 | |
| 23 | BANK OF AMERICA CORP /DE/ | $6.7M | 331K | ▼−3.3% Reduced · −11K sh | Q1 2026 | |
| 24 | MORGAN STANLEY | $5.6M | 278K | ▼−3.4% Reduced · −10K sh | Q1 2026 | |
| 25 | UBS Group AG | $5.2M | 259K | ▲+46% Added · +82K 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 |
|---|---|---|---|---|---|
| Mar 20, 2026 | COLLINS GARY S | VICE CHAIRMAN, Director | Sell (S) | 22K | $429K |
| Mar 2, 2026 | Pilmer Donald | EVP | Grant (A) | 9K | $0 |
| Mar 2, 2026 | ADAMS BRADLEY S. | CFO & COO | Tax withholding (F) | 5K | $91K |
| Mar 2, 2026 | Eccher James | CHAIRMAN AND CEO, Director | Tax withholding (F) | 13K | $256K |
| Mar 2, 2026 | COLLINS GARY S | VICE CHAIRMAN, Director | Tax withholding (F) | 4K | $84K |
| Mar 2, 2026 | Eccher James | CHAIRMAN AND CEO, Director | Grant (A) | 44K | $0 |
| Mar 2, 2026 | COLLINS GARY S | VICE CHAIRMAN, Director | Grant (A) | 14K | $0 |
| Mar 2, 2026 | Pilmer Donald | EVP | Tax withholding (F) | 3K | $54K |
| Mar 2, 2026 | Gartelmann Richard A JR | EVP | Grant (A) | 5K | $0 |
| Mar 2, 2026 | ADAMS BRADLEY S. | CFO & COO | Grant (A) | 16K | $0 |
| Mar 2, 2026 | Gartelmann Richard A JR | EVP | Tax withholding (F) | 2K | $31K |
| Feb 21, 2026 | YORK JILL E | Director | Tax withholding (F) | 3K | $63K |
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 53 funds | $38.9B |
| ALPHABET INC-CL AGOOGL | 53 funds | $17.3B |
| META PLATFORMS INC-CLASS AMETA | 53 funds | $12.2B |
| JPMORGAN CHASE & COJPM | 53 funds | $9.0B |
| ELI LILLY & COLLY | 53 funds | $7.1B |
| VISA INC-CLASS A SHARESV | 53 funds | $5.7B |
| WALMART INCWMT | 53 funds | $4.9B |
| WELLS FARGO & COWFC | 53 funds | $2.2B |
| AMERICAN EXPRESS COAXP | 53 funds | $2.0B |
| APPLE INCAAPL | 52 funds | $33.3B |
| MICROSOFT CORPMSFT | 52 funds | $26.8B |
| AMAZON.COM INCAMZN | 52 funds | $20.2B |
Ranked by how many of OSBC'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 OSBC. 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.