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 OUST 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/OUST"
Use Arkolith to show who owns OUST, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $102.1M | 4.7M | ▼~0% Reduced · −1K sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $97.2M | 5.3M | ▲+3.0% Added · +155K sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $32.5M | 1.8M | ▲New +1.8M sh | Q1 2026 | |
| 4 | STATE STREET CORP | $30.0M | 1.6M | ▲+3.3% Added · +52K sh | Q1 2026 | |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | $26.6M | 1.5M | ▲+2.0% Added · +29K sh | Q1 2026 | |
| 6 | VANGUARD FIDUCIARY TRUST CO | $7.6M | 416K | ▲New +416K sh | Q1 2026 | |
| 7 | Swiss Life Asset Management Ltd | $4.7M | 26K | ▲New +26K sh | Q1 2026 | |
| 8 | FMR LLC | $4.3M | 235K | ▲+17% Added · +35K sh | Q1 2026 | |
| 9 | CITADEL ADVISORS LLC | $4.0M | 217K | ▼−31% Reduced · −100K sh | Q1 2026 | |
| 10 | Walleye Capital LLC | $2.9M | 159K | ▲159k× Added · +159K sh | Q1 2026 | |
| 11 | GROUP ONE TRADING LLC | $2.4M | 132K | ▲+191% Added · +87K sh | Q1 2026 | |
| 12 | Man Group plc | $2.2M | 120K | ▲+12% Added · +13K sh | Q1 2026 | |
| 13 | BW Gestao de Investimentos Ltda. | $1.9M | 106K | ▲New +106K sh | Q1 2026 | |
| 14 | PANAGORA ASSET MANAGEMENT INC | $1.9M | 102K | ▼−18% Reduced · −22K sh | Q1 2026 | |
| 15 | Raiffeisen Bank International AG | $1.3M | 80K | ▲New +80K sh | Q1 2026 | |
| 16 | WINTON GROUP Ltd | $999K | 54K | ▲+18% Added · +8K sh | Q1 2026 | |
| 17 | Hennion & Walsh Asset Management, Inc. | $965K | 53K | ▼−2.9% Reduced · −2K sh | Q1 2026 | |
| 18 | EXCHANGE TRADED CONCEPTS, LLC | $957K | 52K | ▲+122% Added · +29K sh | Q1 2026 | |
| 19 | Caption Management, LLC | $683K | 37K | ▲New +37K sh | Q1 2026 | |
| 20 | MetLife Investment Management, LLC | $578K | 31K | ▲+2.8% Added · +853 sh | Q1 2026 | |
| 21 | PEAK6 LLC | $557K | 30K | ▲Added Added · +30K sh | Q1 2026 | |
| 22 | Quadrature Capital Ltd | $554K | 30K | ▲+102% Added · +15K sh | Q1 2026 | |
| 23 | BENJAMIN EDWARDS INC | $447K | 24K | ▲+18% Added · +4K sh | Q1 2026 | |
| 24 | INTECH INVESTMENT MANAGEMENT LLC | $407K | 22K | ▼−11% Reduced · −3K sh | Q1 2026 | |
| 25 | Cresset Asset Management, LLC | $340K | 19K | ▼−4.6% Reduced · −901 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 |
|---|---|---|---|---|---|
| Jun 12, 2026 | Pacala Charles Angus | President and CEO, Director | Sell (S) | 30K | $1.2M |
| Jun 12, 2026 | Jacquemet Cyrille | Chief Revenue Officer | Sell (S) | 9K | $339K |
| Jun 12, 2026 | SPENCER DARIEN | Chief Operating Officer | Sell (S) | 13K | $488K |
| Jun 12, 2026 | Chung Megan | General Counsel and Secretary | Sell (S) | 11K | $437K |
| Jun 12, 2026 | Gianella Kenneth P. | Chief Financial Officer | Sell (S) | 54K | $2.1M |
| Mar 25, 2026 | Frichtl Mark | Chief Technology Officer | Sell (S) | 40K | $838K |
| Mar 25, 2026 | Frichtl Mark | Chief Technology Officer | Option exercise (M) | 40K | $0 |
| Mar 25, 2026 | Frichtl Mark | Chief Technology Officer | Option exercise (M) | 40K | $85K |
| Mar 19, 2026 | Tewksbury Ted L III | Director | Sell (S) | 2K | $34K |
| Mar 12, 2026 | Chung Megan | General Counsel and Secretary | Sell (S) | 10K | $225K |
| Mar 12, 2026 | SPENCER DARIEN | Chief Operating Officer | Sell (S) | 11K | $256K |
| Mar 12, 2026 | Pacala Charles Angus | President and CEO, Director | Sell (S) | 25K | $578K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 70 funds | $30.3B |
| BROADCOM INCAVGO | 69 funds | $16.3B |
| ELI LILLY & COLLY | 69 funds | $7.8B |
| VISA INC-CLASS A SHARESV | 69 funds | $5.4B |
| UNITEDHEALTH GROUP INCUNH | 69 funds | $3.5B |
| APPLE INCAAPL | 68 funds | $35.9B |
| AMAZON.COM INCAMZN | 68 funds | $22.8B |
| META PLATFORMS INC-CLASS AMETA | 68 funds | $14.4B |
| TESLA INCTSLA | 68 funds | $8.9B |
| ADVANCED MICRO DEVICESAMD | 68 funds | $3.6B |
| NEWMONT CORPNEM | 68 funds | $2.2B |
| SERVICENOW INCNOW | 68 funds | $2.0B |
Ranked by how many of OUST'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 OUST. 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.