Harry Markowitz
A Nobel Memorial Prize winning economist who devised the modern portfolio theory in 1952. Markowitz's theories emphasized the importance of portfolios, risk, the correlations between securities and diversification. His work changed the way that people invested.

Investopedia Says:
Prior to Markowitz's theories, emphasis was placed on picking single high-yield stocks without any regard to their effects on portfolios as a whole. Markowitz's portfolio theory would be a large stepping stone towards the creation of the capital asset pricing model.

Related Terms:
Capital Asset Pricing Model - CAPM
Correlation
Diversification
Markowitz Efficient Set
Modern Portfolio Theory - MPT
Mutual Fund Theorem
Portfolio
Risk

• NZD
• O
• Obligation
• Obligation Bond
• Obligor
• Obsolescence Risk
• Obsolete Inventory
• Ocean Bill Of Lading
• October Effect
• Odd Lot
• Odd Lotter
• Odd Lot Theory
• OEX
• Off-Balance-Sheet Financing
• Offer
• Offering
• Offering Circular
• Offering Memorandum
• Offering Price
• Office Audit
• Office of Federal Housing Enterprise Oversight (OFHEO)
• Office of Foreign Asset Control (OFAC)
• Office of Foreign Asset Control (OFAC)
• Office Of Thrift Supervision (OTS)
• Office Of Thrift Supervision (OTS)