Technically Speaking
If you're looking to explain recent weakness in equities, you don't have to look very far: It's thos
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Technical analysis is, at minimum, useful as a shorthand way of describing how stocks are acting. If you say a stock is backing and filling, testing resistance, breaking down through 50 mva, other investors know what that means.
How predictive it is, opinions vary, and what is “it”? Simply looking at single stock price chart, or looking at price chart plus volume plus options plus estimate revisions plus behavior of industry comps plus . . .