MEC — Institutional owners (13F)
Institutions that report holding this stock in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.
| Institution | Value | Shares | % of tracked 13F | Type |
|---|---|---|---|---|
| Portolan Capital Management, LLC | $48,670,130 | 1,299,256 | 6.15% | Shares |
| FMR LLC | $47,955,173 | 1,280,170 | 6.06% | Shares |
| BlackRock, Inc. | $44,331,785 | 1,183,443 | 5.60% | Shares |
| Allspring Global Investments Holdings, LLC | $37,777,372 | 1,072,916 | 4.78% | Shares |
| Driehaus Capital Management LLC | $31,704,421 | 846,354 | 4.01% | Shares |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $29,968,000 | 800,000 | 3.79% | Shares |
| DIMENSIONAL FUND ADVISORS LP | $29,304,240 | 782,276 | 3.70% | Shares |
| ROYCE & ASSOCIATES LP | $28,173,029 | 752,083 | 3.56% | Shares |
| VANGUARD CAPITAL MANAGEMENT LLC | $27,856,043 | 743,621 | 3.52% | Shares |
| Boston Partners | $25,813,603 | 696,429 | 3.26% | Shares |
| BLAIR WILLIAM & CO/IL | $20,479,906 | 546,714 | 2.59% | Shares |
| WELLINGTON MANAGEMENT GROUP LLP | $17,890,259 | 477,583 | 2.26% | Shares |
| EVR Research LP | $16,553,874 | 441,908 | 2.09% | Shares |
| GEODE CAPITAL MANAGEMENT, LLC | $14,035,404 | 374,578 | 1.77% | Shares |
| First Eagle Investment Management, LLC | $13,844,280 | 369,575 | 1.75% | Shares |
| JANE STREET GROUP, LLC | $13,341,417 | 356,151 | 1.69% | Shares |
| JPMORGAN CHASE & CO | $13,034,789 | 347,224 | 1.65% | Shares |
| KENNEDY CAPITAL MANAGEMENT LLC | $12,600,682 | 336,377 | 1.59% | Shares |
| Ophir Asset Management Pty Ltd | $12,238,145 | 326,699 | 1.55% | Shares |
| Granahan Investment Management, LLC | $12,141,086 | 324,108 | 1.53% | Shares |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $11,760,305 | 313,943 | 1.49% | Shares |
| VANGUARD GROUP INC | $11,749,701 | 627,655 | 1.49% | Shares |
| STATE STREET CORP | $10,907,153 | 291,168 | 1.38% | Shares |
| Nuveen, LLC | $10,560,498 | 281,914 | 1.33% | Shares |
| BANK OF AMERICA CORP /DE/ | $10,350,836 | 276,317 | 1.31% | Shares |
| MILLENNIUM MANAGEMENT LLC | $9,502,740 | 253,677 | 1.20% | Shares |
| JB CAPITAL PARTNERS LP | $9,384,180 | 250,512 | 1.19% | Shares |
| Squarepoint Ops LLC | $8,944,174 | 238,766 | 1.13% | Shares |
| CONGRUENCE CAPITAL, LLC | $8,824,827 | 235,580 | 1.12% | Shares |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $7,528,711 | 200,980 | 0.95% | Shares |
| TWO SIGMA INVESTMENTS, LP | $7,451,244 | 198,912 | 0.94% | Shares |
| CITADEL ADVISORS LLC | $7,443,751 | 198,712 | 0.94% | Shares |
| AWM Investment Company, Inc. | $6,742,800 | 180,000 | 0.85% | Shares |
| OSTERWEIS CAPITAL MANAGEMENT INC | $6,540,516 | 174,600 | 0.83% | Shares |
| TUDOR INVESTMENT CORP ET AL | $6,362,506 | 169,848 | 0.80% | Shares |
| PEAK6 LLC | $5,619,000 | 150,000 | 0.71% | Call option |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5,611,508 | 149,800 | 0.71% | Call option |
| Wealthspire Advisors, LLC | $5,304,599 | 141,607 | 0.67% | Shares |
| Pillsbury Lake Capital LLC | $5,122,505 | 136,746 | 0.65% | Shares |
| Informed Momentum Co LLC | $4,839,158 | 129,182 | 0.61% | Shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4,727,452 | 126,200 | 0.60% | Put option |
| Russell Investments Group, Ltd. | $4,701,717 | 125,513 | 0.59% | Shares |
| SEI INVESTMENTS CO | $4,443,020 | 118,607 | 0.56% | Shares |
| Empowered Funds, LLC | $4,366,712 | 116,570 | 0.55% | Shares |
| NORTHERN TRUST CORP | $4,307,712 | 114,995 | 0.54% | Shares |
| BNP PARIBAS FINANCIAL MARKETS | $4,212,564 | 112,455 | 0.53% | Shares |
| NEEDHAM INVESTMENT MANAGEMENT LLC | $4,120,600 | 110,000 | 0.52% | Shares |
| Trexquant Investment LP | $3,765,367 | 100,517 | 0.48% | Shares |
| MORGAN STANLEY | $3,751,970 | 100,159 | 0.47% | Shares |
| VANGUARD FIDUCIARY TRUST CO | $3,697,639 | 98,709 | 0.47% | Shares |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $3,680,932 | 98,263 | 0.47% | Shares |
| Walleye Capital LLC | $3,500,412 | 93,444 | 0.44% | Shares |
| Qube Research & Technologies Ltd | $3,263,852 | 87,129 | 0.41% | Shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $3,201,407 | 85,462 | 0.40% | Shares |
| UBS Group AG | $3,096,518 | 82,662 | 0.39% | Shares |
| ANCHOR CAPITAL ADVISORS LLC | $3,029,915 | 80,884 | 0.38% | Shares |
| Invesco Ltd. | $2,821,899 | 75,331 | 0.36% | Shares |
| FORMULA GROWTH LTD | $2,809,500 | 75,000 | 0.36% | Shares |
| TOCQUEVILLE ASSET MANAGEMENT L.P. | $2,663,406 | 71,100 | 0.34% | Shares |
| Panoramic Capital, LLC | $2,622,200 | 70,000 | 0.33% | Shares |
| XTX Topco Ltd | $2,457,526 | 65,604 | 0.31% | Shares |
| Caption Management, LLC | $2,341,250 | 62,500 | 0.30% | Call option |
| POLEN CAPITAL MANAGEMENT LLC | $2,316,039 | 61,827 | 0.29% | Shares |
| CITIGROUP INC | $1,971,146 | 52,620 | 0.25% | Shares |
| GOLDMAN SACHS GROUP INC | $1,947,546 | 51,990 | 0.25% | Shares |
| AMERICAN CENTURY COMPANIES INC | $1,805,984 | 48,211 | 0.23% | Shares |
| Balyasny Asset Management L.P. | $1,762,568 | 47,052 | 0.22% | Shares |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1,717,953 | 45,861 | 0.22% | Shares |
| SummerHaven Investment Management, LLC | $1,697,875 | 45,325 | 0.21% | Shares |
| Bank of New York Mellon Corp | $1,680,943 | 44,873 | 0.21% | Shares |
| CITADEL ADVISORS LLC | $1,603,288 | 42,800 | 0.20% | Call option |
| GatePass Capital, LLC | $1,498,400 | 40,000 | 0.19% | Shares |
| OSAIC HOLDINGS, INC. | $1,483,911 | 39,614 | 0.19% | Shares |
| SHEETS SMITH WEALTH MANAGEMENT | $1,419,622 | 37,897 | 0.18% | Shares |
| Caption Management, LLC | $1,404,750 | 37,500 | 0.18% | Put option |
| Diametric Capital, LP | $1,338,333 | 35,727 | 0.17% | Shares |
| Aquatic Capital Management LLC | $1,188,643 | 31,731 | 0.15% | Shares |
| CenterBook Partners LP | $1,160,960 | 30,992 | 0.15% | Shares |
| BOOTHBAY FUND MANAGEMENT, LLC | $1,145,677 | 30,584 | 0.14% | Shares |
| North Star Investment Management Corp. | $1,123,800 | 30,000 | 0.14% | Shares |
| J. Goldman & Co LP | $1,123,800 | 30,000 | 0.14% | Call option |
| KORNITZER CAPITAL MANAGEMENT INC /KS | $1,108,329 | 29,587 | 0.14% | Shares |
| RENAISSANCE TECHNOLOGIES LLC | $1,048,880 | 28,000 | 0.13% | Shares |
| Divisadero Street Capital Management, LP | $1,029,476 | 27,482 | 0.13% | Shares |
| JANE STREET GROUP, LLC | $1,015,166 | 27,100 | 0.13% | Call option |
| Quadrature Capital Ltd | $991,828 | 26,477 | 0.13% | Shares |
| Johnson Financial Group, Inc. | $973,960 | 26,000 | 0.12% | Shares |
| CITADEL ADVISORS LLC | $932,754 | 24,900 | 0.12% | Put option |
| PRELUDE CAPITAL MANAGEMENT, LLC | $897,879 | 23,969 | 0.11% | Shares |
| LPL Financial LLC | $830,563 | 22,172 | 0.10% | Shares |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | $816,066 | 21,785 | 0.10% | Shares |
| JOURNEY STRATEGIC WEALTH LLC | $793,498 | 44,206 | 0.10% | Shares |
| WELLS FARGO & COMPANY/MN | $760,437 | 20,300 | 0.10% | Shares |
| JANE STREET GROUP, LLC | $752,946 | 20,100 | 0.10% | Put option |
| RHUMBLINE ADVISERS | $749,227 | 20,001 | 0.09% | Shares |
| ENVESTNET ASSET MANAGEMENT INC | $708,743 | 18,920 | 0.09% | Shares |
| AQR CAPITAL MANAGEMENT LLC | $682,671 | 18,224 | 0.09% | Shares |
| STATE OF WISCONSIN INVESTMENT BOARD | $680,686 | 18,171 | 0.09% | Shares |
| WESBANCO BANK INC | $674,280 | 18,000 | 0.09% | Shares |
| PERRITT CAPITAL MANAGEMENT INC | $561,600 | 30,000 | 0.07% | Shares |
| DEUTSCHE BANK AG\ | $534,854 | 14,278 | 0.07% | Shares |
| Caption Management, LLC | $527,886 | 14,092 | 0.07% | Shares |
| FRANKLIN RESOURCES INC | $480,087 | 12,816 | 0.06% | Shares |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $470,259 | 13,946 | 0.06% | Shares |
| Numerai GP LLC | $464,879 | 12,410 | 0.06% | Shares |
| Creative Planning | $455,476 | 12,159 | 0.06% | Shares |
| US BANCORP \DE\ | $426,482 | 11,385 | 0.05% | Shares |
| EntryPoint Capital, LLC | $404,306 | 10,793 | 0.05% | Shares |
| Worth Venture Partners, LLC | $398,612 | 10,641 | 0.05% | Shares |
| BARCLAYS PLC | $381,980 | 10,197 | 0.05% | Shares |
| Schonfeld Strategic Advisors LLC | $359,839 | 9,606 | 0.05% | Shares |
| Centiva Capital, LP | $356,020 | 9,504 | 0.05% | Shares |
| MetLife Investment Management, LLC | $323,954 | 8,648 | 0.04% | Shares |
| Vanguard Global Advisers, LLC | $304,100 | 8,118 | 0.04% | Shares |
| HARBOUR INVESTMENTS, INC. | $288,442 | 7,700 | 0.04% | Shares |
| Avior Wealth Management, LLC | $281,662 | 7,519 | 0.04% | Shares |
| RAYMOND JAMES FINANCIAL INC | $280,575 | 7,490 | 0.04% | Shares |
| Quantbot Technologies LP | $263,231 | 7,027 | 0.03% | Shares |
| Connor, Clark & Lunn Investment Management Ltd. | $259,148 | 6,918 | 0.03% | Shares |
| Calamos Advisors LLC | $257,837 | 6,883 | 0.03% | Shares |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $252,593 | 6,743 | 0.03% | Shares |
| Engineers Gate Manager LP | $212,885 | 5,683 | 0.03% | Shares |
| OCCUDO QUANTITATIVE STRATEGIES LP | $211,050 | 5,634 | 0.03% | Shares |
| Brevan Howard Capital Management LP | $209,064 | 5,581 | 0.03% | Shares |
| Heck Capital Advisors, LLC | $206,318 | 11,494 | 0.03% | Shares |
| AlphaQuest LLC | $205,059 | 10,954 | 0.03% | Shares |
| NEW YORK STATE COMMON RETIREMENT FUND | $202,097 | 5,395 | 0.03% | Shares |
| Police & Firemen's Retirement System of New Jersey | $174,226 | 4,651 | 0.02% | Shares |
| JONES FINANCIAL COMPANIES LLLP | $168,720 | 4,560 | 0.02% | Shares |
| Persistent Asset Partners Ltd | $80,427 | 2,147 | 0.01% | Shares |
| Parkside Financial Bank & Trust | $62,372 | 1,665 | 0.01% | Shares |
| SIMPLEX TRADING, LLC | $57,276 | 1,529 | 0.01% | Shares |
| Legal & General Group Plc | $53,193 | 1,420 | 0.01% | Shares |
| Ameritas Investment Partners, Inc. | $49,784 | 1,329 | 0.01% | Shares |
| Caitong International Asset Management Co., Ltd | $35,325 | 943 | 0.00% | Shares |
| Arax Advisory Partners | $26,559 | 709 | 0.00% | Shares |
| Tower Research Capital LLC (TRC) | $23,824 | 636 | 0.00% | Shares |
| ROYAL BANK OF CANADA | $21,000 | 561 | 0.00% | Shares |
| BARD ASSOCIATES INC | $18,730 | 500 | 0.00% | Shares |
| CWM, LLC | $16,550 | 922 | 0.00% | Shares |
| Sterling Capital Management LLC | $11,051 | 295 | 0.00% | Shares |
| Rockefeller Capital Management L.P. | $10,339 | 276 | 0.00% | Shares |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $6,893 | 184 | 0.00% | Shares |
| COMERICA BANK | $6,695 | 358 | 0.00% | Shares |
| GAMMA Investing LLC | $6,518 | 174 | 0.00% | Shares |
| LORD, ABBETT & CO. LLC | $5,700 | 152,175 | 0.00% | Shares |
| Clearstead Advisors, LLC | $4,908 | 131 | 0.00% | Shares |
| FIFTH THIRD BANCORP | $4,405 | 118 | 0.00% | Shares |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $4,111 | 229 | 0.00% | Shares |
| HUNTER ASSOCIATES INVESTMENT MANAGEMENT LLC | $4,030 | 107,528 | 0.00% | Shares |
| Allworth Financial LP | $2,473 | 66 | 0.00% | Shares |
| Farther Finance Advisors, LLC | $1,798 | 48 | 0.00% | Shares |
| Quarry LP | $1,648 | 44 | 0.00% | Shares |
| Bare Financial Services, Inc | $1,386 | 37 | 0.00% | Shares |
| Janney Montgomery Scott LLC | $1,173 | 31,304 | 0.00% | Shares |
| CIBC Private Wealth Group LLC | $1,101 | 80 | 0.00% | Shares |
| HARBOR CAPITAL ADVISORS, INC. | $1,072 | 28,625 | 0.00% | Shares |
| EverSource Wealth Advisors, LLC | $1,011 | 27 | 0.00% | Shares |
| NISA INVESTMENT ADVISORS, LLC | $974 | 26 | 0.00% | Shares |
| HRT FINANCIAL LP | $807 | 21,568 | 0.00% | Shares |
| PNC Financial Services Group, Inc. | $749 | 20 | 0.00% | Shares |
| Bruce G. Allen Investments, LLC | $674 | 18 | 0.00% | Shares |
| Essential Partners LLC | $524 | 14 | 0.00% | Shares |
| SIGNATUREFD, LLC | $487 | 13 | 0.00% | Shares |
| PRICE T ROWE ASSOCIATES INC /MD/ | $451 | 12,026 | 0.00% | Shares |
| DELTA CAPITAL MANAGEMENT LLC | $372 | 9,920 | 0.00% | Shares |
| GSA CAPITAL PARTNERS LLP | $255 | 6,814 | 0.00% | Shares |
| NATIONAL BANK OF CANADA /FI/ | $149 | 4 | 0.00% | Shares |
| State of Alaska, Department of Revenue | $146 | 3,903 | 0.00% | Shares |
| Avion Wealth | $37 | 1,000 | 0.00% | Shares |