126 tracked 13F filers disclose a position in MEC as of the latest SEC 13F filings, a combined $360.9M 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 | Allspring Global Investments Holdings, LLC | $37.8M | 1.1M | ▼−46% Reduced · −927K sh | Q2 2026 | |
| 2 | DIMENSIONAL FUND ADVISORS LP | $16.6M | 926K | ▲+5.6% Added · +49K sh | Q1 2026 | |
| 3 | BlackRock, Inc. | $15.8M | 882K | ▲+1.9% Added · +16K sh | Q1 2026 | |
| 4 | Portolan Capital Management, LLC | $14.7M | 821K | ▲+60% Added · +308K sh | Q1 2026 | |
| 5 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $30.0M | 800K | ▲New +800K sh | Q2 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $10.7M | 595K | →First observed position No prior filed position | Q1 2026 | |
| 7 | BLAIR WILLIAM & CO/IL | $20.5M | 547K | ▼−3.3% Reduced · −19K sh | Q2 2026 | |
| 8 | EVR Research LP | $16.6M | 442K | ▼−29% Reduced · −178K sh | Q3 2026 | |
| 9 | Granahan Investment Management, LLC | $7.0M | 387K | ▲+45% Added · +120K sh | Q1 2026 | |
| 10 | MILLENNIUM MANAGEMENT LLC | $6.8M | 381K | ▲+149% Added · +228K sh | Q1 2026 | |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $14.0M | 375K | ▲+12% Added · +39K sh | Q2 2026 | |
| 12 | First Eagle Investment Management, LLC | $13.8M | 370K | —Held | Q3 2026 | |
| 13 | AMERIPRISE FINANCIAL INC | $6.3M | 352K | ▲+0.3% Added · +946 sh | Q1 2026 | |
| 14 | Ophir Asset Management Pty Ltd | $12.2M | 327K | ▲New +327K sh | Q2 2026 | |
| 15 | STATE STREET CORP | $10.9M | 291K | ▲+1.9% Added · +5K sh | Q2 2026 | |
| 16 | SILVERCREST ASSET MANAGEMENT GROUP LLC | $4.8M | 270K | ▲+50% Added · +90K sh | Q1 2026 | |
| 17 | JB CAPITAL PARTNERS LP | $9.4M | 251K | —Held | Q2 2026 | |
| 18 | CONGRUENCE CAPITAL, LLC | $8.8M | 236K | ▲+0.5% Added · +1K sh | Q2 2026 | |
| 19 | Boston Partners | $4.2M | 233K | ▲+4.4% Added · +10K sh | Q1 2026 | |
| 20 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $4.0M | 223K | ▼−1.9% Reduced · −4K sh | Q1 2026 | |
| 21 | AMERICAN CENTURY COMPANIES INC | $4.0M | 222K | ▼−21% Reduced · −59K sh | Q1 2026 | |
| 22 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $3.3M | 185K | ▼−36% Reduced · −103K sh | Q1 2026 | |
| 23 | BANK OF AMERICA CORP /DE/ | $3.3M | 184K | ▼−16% Reduced · −35K sh | Q1 2026 | |
| 24 | OSTERWEIS CAPITAL MANAGEMENT INC | $6.5M | 175K | ▲New +175K sh | Q2 2026 | |
| 25 | Wealthspire Advisors, LLC | $2.5M | 142K | ▲+48% Added · +46K 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, 23 funds opened a new position in MEC and 16 added to an existing one, while 16 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 |
|---|---|---|
| MICROSOFT CORPMSFT | 60 funds | $105.5B |
| NVIDIA CORPNVDA | 58 funds | $143.9B |
| AMAZON.COM INCAMZN | 58 funds | $80.9B |
| ELI LILLY & COLLY | 58 funds | $28.4B |
| JPMORGAN CHASE & COJPM | 58 funds | $25.6B |
| ALPHABET INC-CL AGOOGL | 57 funds | $59.2B |
| APPLE INCAAPL | 56 funds | $107.0B |
| MICRON TECHNOLOGY INCMU | 56 funds | $17.3B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 56 funds | $15.2B |
| BROADCOM INCAVGO | 55 funds | $62.6B |
| ALPHABET INC-CL CGOOG | 55 funds | $55.3B |
| META PLATFORMS INC-CLASS AMETA | 55 funds | $42.1B |
Ranked by how many of MEC's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 6, 2026 | Leuba Sean P | SVP, GC & Secretary | Sell (S) | 13K | $327K |
| Jun 11, 2026 | Reddy Jagadeesh A | President & CEO, Director | Sell (S) | 16K | $550K |
| Jun 8, 2026 | Reddy Jagadeesh A | President & CEO, Director | Sell (S) | 1K | $46K |
| Jun 1, 2026 | Reddy Jagadeesh A | President & CEO, Director | Sell (S) | 17K | $519K |
| Jun 1, 2026 | Reddy Jagadeesh A | President & CEO, Director | Sell (S) | 18K | $538K |
| May 26, 2026 | Raber Ryan F | EVP - Strategy, Sales & Mktg | Sell (S) | 20K | $520K |
| May 21, 2026 | Nichols Craig D | SVP, Operations & Supply Chain | Sell (S) | 4K | $93K |
| May 7, 2026 | Reddy Jagadeesh A | President & CEO, Director | Sell (S) | 10K | $266K |
| May 7, 2026 | Reddy Jagadeesh A | President & CEO, Director | Sell (S) | 11K | $299K |
| Mar 5, 2026 | Leuba Sean P | GC & Secretary | Sell (S) | 7K | $126K |
| Mar 5, 2026 | Leuba Sean P | GC & Secretary | Sell (S) | 3K | $50K |
| Dec 11, 2025 | Fisher Steven L | Director | Sell (S) | 5K | $95K |
Connected entities for MEC
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/MEC/capital-change-brief"
Use Arkolith's capital_change_brief for MEC. 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 MEC. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.