![Mark O'Neil](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Mark O'Neil
Director/Board Member at
CARMAX, INC.
Net worth: 2 M $ as of 31/05/2026
Profile
Mark F.
O'Neil was the founder of CarMax, Inc., founded in 1992, where the title held was Vice President from 1997 to 2000.
Current jobs include Chairman at Chrome Data Solutions LP, Independent Director at CarMax, Inc. since 2019, Director at Dealer Tire LLC, and Senior Advisor at ClearPoint Investment Partners LLC.
Former jobs include Chairman & Chief Executive Officer at DealerTrack, Inc. and Dealertrack Technologies, Inc. from 2014 to 2015, President & Director at triVIN, Inc., Principal at CarMax Auto Superstores, Inc., President at Ertley Motorworld, Chief Operating Officer & Executive Vice President at Cox Automotive, Inc. from 2016 to 2019, Principal at Intel Corp., President & Chief Operating Officer at Greenlight.com from 2000 to 2001, and Principal at McKinsey & Co., Inc. Education includes an MBA from Harvard Business School and undergraduate studies at Worcester Polytechnic Institute.
Mr. O'Neil is the founder of CarMax, Inc.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
CARMAX, INC. 0.03% | 31/03/2026 | 41,374 ( 0.03% ) | 2 M $ | 31/05/2026 |
Mark O'Neil active positions
| Companies | Position | Start |
|---|---|---|
| CARMAX, INC. | Director/Board Member | 07/10/2019 |
Dealer Tire LLC
 Dealer Tire LLC Specialty StoresRetail Trade Retails tires | Director/Board Member | - |
Chrome Data Solutions LP
 Chrome Data Solutions LP Data Processing ServicesTechnology Services Develops data and software solutions for automotive industry | Chairman | - |
ClearPoint Investment Partners LLC
 ClearPoint Investment Partners LLC Investment ManagersFinance ClearPoint Investment Partners invests in lower middle-market companies located in the United States and Canada. The firm target companies with revenues ranging of USD 20 - 200 million and EBITDA of minimum USD 3 million. It targets companies operating in the fields of business services and financial processing. It provides financing for buyouts, recapitalization and growth equity capital requirements. | Consultant / Advisor | - |
Former positions of Mark O'Neil
| Companies | Position | End |
|---|---|---|
Cox Automotive, Inc.
 Cox Automotive, Inc. Other Consumer ServicesConsumer Services Provides automotive services | Chief Operating Officer | 01/03/2019 |
DealerTrack, Inc.
 DealerTrack, Inc. Information Technology ServicesTechnology Services Provides on-demand software and data solutions for the automotive retail industry | Chief Executive Officer | 01/01/2015 |
| DEALERTRACK TECHNOLOGIES INC | Chief Executive Officer | 01/01/2015 |
Greenlight.com
 Greenlight.com Internet Software/ServicesTechnology Services Sells new and old cars by on-line. | President | 01/01/2001 |
| CARMAX, INC. | Founder | 01/01/2000 |
Training of Mark O'Neil
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
47
1st degree connections
15
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 15 |
|---|---|
Intel Corp.
 Intel Corp. SemiconductorsElectronic Technology Engages in design, development, manufacture and sale of CPUs and integrated circuits to computing and related end products | Electronic Technology |
CarMax, Inc.
 CarMax, Inc. Specialty StoresRetail Trade Operates as a holding company whose subsidiaries retails and finance used motor vehicles | Retail Trade |
Greenlight.com
Greenlight.com Internet Software/ServicesTechnology Services Sells new and old cars by on-line. | Technology Services |
Dealertrack Technologies, Inc.
 Dealertrack Technologies, Inc. Packaged SoftwareTechnology Services Develops web-based platform for automobile financing applications processing | Technology Services |
McKinsey & Co., Inc.
 McKinsey & Co., Inc. Miscellaneous Commercial ServicesCommercial Services Operates as a management consulting firm | Commercial Services |
CarMax Auto Superstores, Inc.
 CarMax Auto Superstores, Inc. Specialty StoresRetail Trade Retail new and used cars | Retail Trade |
DealerTrack, Inc.
DealerTrack, Inc. Information Technology ServicesTechnology Services Provides on-demand software and data solutions for the automotive retail industry | Technology Services |
Worcester Polytechnic Institute
 Worcester Polytechnic Institute Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Dealer Tire LLC
Dealer Tire LLC Specialty StoresRetail Trade Retails tires | Retail Trade |
triVIN, Inc.
 triVIN, Inc. Packaged SoftwareTechnology Services Provides online vehicle registration software solutions | Technology Services |
Ertley Motorworld | |
Cox Automotive, Inc.
Cox Automotive, Inc. Other Consumer ServicesConsumer Services Provides automotive services | Consumer Services |
Chrome Data Solutions LP
Chrome Data Solutions LP Data Processing ServicesTechnology Services Develops data and software solutions for automotive industry | Technology Services |
Harvard Business School
 Harvard Business School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
ClearPoint Investment Partners LLC
ClearPoint Investment Partners LLC Investment ManagersFinance ClearPoint Investment Partners invests in lower middle-market companies located in the United States and Canada. The firm target companies with revenues ranging of USD 20 - 200 million and EBITDA of minimum USD 3 million. It targets companies operating in the fields of business services and financial processing. It provides financing for buyouts, recapitalization and growth equity capital requirements. | Finance |
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