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Stock Market Instability: Some Implications from Portfolio Theory
Edward F. Renshaw
Financial Analysts Journal
Vol. 23, No. 4 (Jul. - Aug., 1967), pp. 80-83+87
Published by: CFA Institute
Stable URL: http://www.jstor.org/stable/4470196
Page Count: 5
You can always find the topics here!Topics: Stock markets, Financial portfolios, Stock prices, Mutual funds, Stock market indices, Funding liquidity, Investment risk, Financial investments, Portfolio management, Debits
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The adjustment process implicit in the theory of portfolio selection first proposed by Markowitz can be used to enrich understanding of financial instability. When this model was applied to debit balances with brokerage firms, it was found that the stock market panics of 1962 and 1966 cannot be blamed on margin trading. The exoneration of speculators turns attention to operations by institutional investors conducted in the light of portfolio theory. New insights in this area can contribute to economic stability.
Financial Analysts Journal © 1967 CFA Institute