Among active 13F managers last quarter, 11 opened and 17 added, while 12 reduced; the largest holder to move was Rock Springs Capital Management LP (new position). Over the last 180 days, 4 insiders sold and none bought, a net -$1.9M in open-market trades.
The legs disagree, or only one of them leans.
161 tracked 13F filers disclose a position in OMER as of the latest SEC 13F filings, a combined $297.1M 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 | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 6.0M | $57.5M | ▲+14% Added · +735K sh | Q2 2026 | |
| 2 | Vanguard Capital Management LLC | 3.1M | $29.2M | ▲+3.0% Added · +89K sh | Q2 2026 | |
| 3 | UBS Group AG | 2.3M | $24.7M | ▲+5.3% Added · +118K sh | Q1 2026 | |
| 4 | State Street Corp | 2.3M | $22.1M | ▲+21% Added · +400K sh | Q2 2026 | |
| 5 | Geode Capital Management, LLC | 1.9M | $18.2M | ▲+9.3% Added · +162K sh | Q2 2026 | |
| 6 | Stifel Financial Corp | 1.8M | $19.3M | ▲+1.2% Added · +22K sh | Q1 2026 | |
| 7 | Vanguard Portfolio Management LLC | 963K | $9.2M | ▲+34% Added · +244K sh | Q2 2026 | |
| 8 | Corient Private Wealth LP | 801K | $8.5M | ▲+16% Added · +113K sh | Q1 2026 | |
| 9 | Rock Springs Capital Management LP | 718K | $6.8M | ▲New +718K sh | Q2 2026 | |
| 10 | Rubric Capital Management LP | 657K | $6.2M | ▲New +657K sh | Q2 2026 | |
| 11 | Charles Schwab Investment Management Inc | 583K | $6.2M | ▼−1.8% Reduced · −11K sh | Q1 2026 | |
| 12 | Bank Of Montreal | 568K | $6.0M | ▼−5.5% Reduced · −33K sh | Q1 2026 | |
| 13 | Northern Trust Corp | 564K | $6.0M | ▲+7.0% Added · +37K sh | Q1 2026 | |
| 14 | Vanguard Fiduciary Trust Co | 491K | $4.7M | ▼−0.2% Reduced · −1K sh | Q2 2026 | |
| 15 | Susquehanna International Group, LLP | 485K | $5.1M | ▼−35% Reduced · −257K sh | Q1 2026 | |
| 16 | Clutterbuck Capital Management LLC | 450K | $4.3M | ▲+50% Added · +150K sh | Q2 2026 | |
| 17 | Millennium Management LLC | 411K | $4.3M | ▼−7.1% Reduced · −31K sh | Q1 2026 | |
| 18 | Morgan Stanley | 318K | $3.4M | ▼−18% Reduced · −68K sh | Q1 2026 | |
| 19 | Two Sigma Investments, LP | 286K | $3.0M | ▼−45% Reduced · −238K sh | Q1 2026 | |
| 20 | Badgley Phelps Wealth Managers, LLC | 264K | $2.8M | —Held | Q1 2026 | |
| 21 | Bank Of America Corp | 205K | $2.2M | ▲+78% Added · +90K sh | Q1 2026 | |
| 22 | Goldman Sachs Group Inc | 203K | $2.1M | ▼−11% Reduced · −24K sh | Q1 2026 | |
| 23 | Jump Financial, LLC | 196K | $2.1M | ▼−14% Reduced · −32K sh | Q1 2026 | |
| 24 | Dimensional Fund Advisors LP | 180K | $1.9M | ▲+85% Added · +83K sh | Q1 2026 | |
| 25 | Ancora Advisors LLC | 169K | $1.6M | ▲+47% Added · +54K sh | Q2 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, 11 funds opened a new position in OMER and 17 added to an existing one, while 12 reduced. 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 | Their position there |
|---|---|---|
| Amazon.com IncAMZN | 72 funds | $89.0B |
| Nvidia CorpNVDA | 70 funds | $196.3B |
| Microsoft CorpMSFT | 70 funds | $115.0B |
| Alphabet Inc-CL AGOOGL | 67 funds | $81.1B |
| Micron Technology IncMU | 67 funds | $30.8B |
| Mastercard Inc - AMA | 67 funds | $24.8B |
| Lam Research CorpLRCX | 67 funds | $22.0B |
| Applied Materials IncAMAT | 67 funds | $21.4B |
| Broadcom IncAVGO | 66 funds | $81.2B |
| Eli Lilly & CoLLY | 66 funds | $40.7B |
| Visa Inc-Class A SharesV | 66 funds | $29.9B |
| General ElectricGE | 66 funds | $16.4B |
Ranked by how many of OMER's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in OMER.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 31, 2026 | Cancelmo Peter B | VP, General Counsel | Sell (S) | 25K | $464K |
| Aug 28, 2026 | Cancelmo Peter B | VP, General Counsel | Sell (S) | 25K | $466K |
| Aug 27, 2026 | Hanish Arnold C | Director | Sell (S) 2 lots, same day | 10K | $189K |
| Aug 26, 2026 | Hanish Arnold C | Director | Sell (S) | 5K | $93K |
| Aug 24, 2026 | Borges David J. | VP, Finance & CAO | Sell (S) | 906 | $17K |
| Aug 21, 2026 | Borges David J. | VP, Finance & CAO | Sell (S) | 10K | $190K |
| Aug 20, 2026 | Cable Thomas J. | Director | Sell (S) | 15K | $277K |
| Aug 13, 2026 | Borges David J. | VP, Finance & CAO | Sell (S) | 5K | $85K |
| May 22, 2026 | Cable Thomas J. | Director | Sell (S) | 8K | $87K |
| Jan 13, 2026 | Borges David J. | VP, Finance & CAO | Sell (S) | 30K | $369K |
| Jan 12, 2026 | Borges David J. | VP, Finance & CAO | Sell (S) | 30K | $382K |
| Nov 17, 2023 | Demopulos Gregory A MD | Chairman, CEO & President | Buy (P) | 15K | $25K |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 48 | 27 | – |
Insiders Form 4 open-market | 0 | 4 | -$1.9M |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
| Class | 13F holders | Value held |
|---|---|---|
| OMERthis pagecs | 161 funds | $297.1M |
| OMER 9.5 06/15/29NOTE 9.500% 6/1 | 6 funds | $100.3M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for OMER
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/OMER/capital-change-brief"
Use Arkolith's capital_change_brief for OMER. 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 OMER. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.