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<p>[QUOTE=&quot;-jeffB, post: 1946309, member: 27832&quot;]The price goes up 10%. Is this a &quot;spike&quot;, or part of a longer-term increase? You don&#039;t know, and neither does anyone else, absent insider info.</p><p><br /></p><p>The problem with &quot;selling into spikes&quot; and &quot;buying into dips&quot; is that there&#039;s no way in general to distinguish transient from long-term changes. Some people think they can; I think they&#039;re deceiving themselves.</p><p><br /></p><p>As for buyers (especially large ones), as long as you can maintain a spread -- buying at a lower price than you sell -- you can make a profit in any market.[/QUOTE]</p><p><br /></p>

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