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3#
发表于 2012-3-30 10:20
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In an informationally efficient market: A)
| buying and holding a broad market portfolio is the preferred investment strategy. |
| B)
| the conditions exist for active investment strategies to achieve superior risk-adjusted returns. |
| C)
| share prices adjust rapidly when companies announce results in line with expectations. |
|
If financial markets are informationally efficient, active investment strategies cannot consistently achieve risk-adjusted returns superior to holding a passively managed index portfolio. In addition, a passive investment strategy has lower transactions costs than an active management strategy. Share prices should not adjust when a company announces results in line with expectations in an informationally efficient market, because the market price already reflects the expected results. |
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