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 OMER 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/OMER"
Use Arkolith to show who owns OMER, 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 | $68.9M | 4.0M | ▲+20% Added · +666K sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $56.1M | 5.3M | ▲+4.9% Added · +247K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $31.5M | 3.0M | ▲New +3.0M sh | Q1 2026 | |
| 4 | UBS Group AG | $24.7M | 2.3M | ▲+5.3% Added · +118K sh | Q1 2026 | |
| 5 | STATE STREET CORP | $20.3M | 1.9M | ▲+22% Added · +346K sh | Q1 2026 | |
| 6 | STIFEL FINANCIAL CORP | $19.3M | 1.8M | ▲+1.2% Added · +22K sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $18.5M | 1.8M | ▲+7.4% Added · +121K sh | Q1 2026 | |
| 8 | Corient Private Wealth LLC | $8.5M | 801K | ▲+16% Added · +113K sh | Q1 2026 | |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | $7.6M | 719K | ▲New +719K sh | Q1 2026 | |
| 10 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $6.2M | 583K | ▼−1.8% Reduced · −11K sh | Q1 2026 | |
| 11 | BANK OF MONTREAL /CAN/ | $6.0M | 568K | ▼−5.5% Reduced · −33K sh | Q1 2026 | |
| 12 | NORTHERN TRUST CORP | $6.0M | 564K | ▲+7.0% Added · +37K sh | Q1 2026 | |
| 13 | VANGUARD FIDUCIARY TRUST CO | $5.2M | 492K | ▲New +492K sh | Q1 2026 | |
| 14 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5.1M | 485K | ▼−35% Reduced · −257K sh | Q1 2026 | |
| 15 | MILLENNIUM MANAGEMENT LLC | $4.3M | 411K | ▼−7.1% Reduced · −31K sh | Q1 2026 | |
| 16 | MORGAN STANLEY | $3.4M | 318K | ▼−18% Reduced · −68K sh | Q1 2026 | |
| 17 | TWO SIGMA INVESTMENTS, LP | $3.0M | 286K | ▼−45% Reduced · −238K sh | Q1 2026 | |
| 18 | Badgley Phelps Wealth Managers, LLC | $2.8M | 264K | —Held | Q1 2026 | |
| 19 | CITADEL ADVISORS LLC | $2.7M | 260K | ▲+8.2% Added · +20K sh | Q1 2026 | |
| 20 | BANK OF AMERICA CORP /DE/ | $2.2M | 205K | ▲+78% Added · +90K sh | Q1 2026 | |
| 21 | GOLDMAN SACHS GROUP INC | $2.1M | 203K | ▼−11% Reduced · −24K sh | Q1 2026 | |
| 22 | Polar Asset Management Partners Inc. | $2.1M | 200K | ▲+191% Added · +131K sh | Q1 2026 | |
| 23 | Jump Financial, LLC | $2.1M | 196K | ▼−14% Reduced · −32K sh | Q1 2026 | |
| 24 | DIMENSIONAL FUND ADVISORS LP | $1.9M | 180K | ▲+85% Added · +83K sh | Q1 2026 | |
| 25 | Bank of New York Mellon Corp | $1.8M | 166K | ▲+0.3% Added · +464 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 |
|---|---|---|---|---|---|
| Feb 18, 2026 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Option exercise (M) | 400K | $0 |
| Feb 18, 2026 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Tax withholding (F) | 358K | $4.3M |
| Feb 18, 2026 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Option exercise (M) | 400K | $4.1M |
| Jan 13, 2026 | Borges David J. | VP, Finance & CAO | Option exercise (M) | 30K | $92K |
| Jan 13, 2026 | Borges David J. | VP, Finance & CAO | Sell (S) | 30K | $369K |
| Jan 13, 2026 | Borges David J. | VP, Finance & CAO | Option exercise (M) | 30K | $0 |
| Jan 12, 2026 | Borges David J. | VP, Finance & CAO | Sell (S) | 30K | $382K |
| Oct 13, 2025 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Gift (G) | 300K | $0 |
| Oct 13, 2025 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Gift (G) | 300K | $0 |
| Oct 13, 2025 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Gift (G) | 600K | $0 |
| Jun 30, 2025 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Grant (A) | 865K | $0 |
| Jun 30, 2025 | Borges David J. | VP, Finance & CAO | Grant (A) | 95K | $0 |
| Class | 13F holders | Value held |
|---|---|---|
| OMERthis pagecs | 122 funds | $339.4M |
| OMER 9.5 06/15/29NOTE 9.500% 6/1 | 5 funds | $101.3M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 46 funds | $19.2B |
| AMAZON.COM INCAMZN | 46 funds | $14.1B |
| META PLATFORMS INC-CLASS AMETA | 46 funds | $8.8B |
| TESLA INCTSLA | 46 funds | $5.6B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 46 funds | $4.3B |
| PALANTIR TECHNOLOGIES INC-APLTR | 46 funds | $2.9B |
| APPLIED MATERIALS INCAMAT | 46 funds | $2.7B |
| LAM RESEARCH CORPLRCX | 46 funds | $2.5B |
| ADVANCED MICRO DEVICESAMD | 46 funds | $2.5B |
| HOME DEPOT INCHD | 46 funds | $2.5B |
| ORACLE CORPORCL | 46 funds | $1.9B |
| ADOBE INCADBE | 46 funds | $1.1B |
Ranked by how many of OMER'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 OMER. 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.