General Studies · Financial Markets
Which one of the following is considered a necessary precondition by Richard Roll for markets to become efficient?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Prices approximate a random walk
- 2Costless trading
- 3Free access to and flow of information
- 4Traders who make a living by 'beating the market' through trading✓
Correct answer
Traders who make a living by 'beating the market' through trading
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