- Macquarie Group
- Marketplace
- MarketWatch
- Massachusetts Division of Banks
- Massachusetts House of Representatives
- Massachusetts State Senate
- MassMutual
- Mayer Brown
- McLean Asset Management
- Medical Alert Buyers Guide
- Mercer
- MetLife
- Mid America Mortgage
- Mirae Asset Securities Inc
- Money House Inc.
- Money Management International
- Money.com
- MoneyTrax
- Morning Consult
- Mortgage Assets Management LLC