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A market is weak-form efficient if you cannot use past share prices to predict the direction of future price changes. Or in other words, if you can't use past r
by kpommerenke 12y ago
A market is weak-form efficient if you cannot use past share prices to predict the direction of future price changes. Or in other words, if you can't use past returns to predict future returns. There's no delusion.
- jsprogrammer 12y agoDirection of change is a bit different from future price and I don't believe was considered in this treatment.