M&A - Mergers and Acquisitions 
M&M - Modigliani-Miller Theorem 
M&O - Maintenance and Operations 
MA - Moving Average 
MACD - Moving Average Convergence/Dive… 
MACE - MidAmerica Commodity Exchange 
MACRS - Modified Accelerated Cost Reco… 
MAD - Market Abuse Directive 
MAD - Moroccan Dirham 
MAFF - Ministry of Agriculture, Forest… 
MaFi - Mathematical Finance 
MAGI - Modified Adjusted Gross Income 
MARC - Malaysian Rating Corporation Be… 
MAS - Monetary Authority of Singapore 
MASB - Malaysian Accounting Standards… 
MATIF - Marché à Terme International d… 
MAX - Midwest Automated Execution syst… 
MBA - Master of Business Administratio… 
MBA - Mortgage Bankers Association of… 
MBAR - Marshall Baseline Accounting an… 
MBB - Malayan Banking Berhad 
MBB - mortgage-backed bond 
MBF - Must Be Filled 
MBIA - Municiple Bond Insurance Associ… 
MBL - Macquarie Bank Limited 
MBM - Maturity by Maturity Bidding 
MBO - management buy-out 
MBO - Municipals-Over-Bonds Spread 
MBS - Mortgage Backed Securities 
MBS - Mortgage Backed Security