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<p id="isPasted">Although there are a lot of (fundamental) factors which might effect the Overnight prices of securities, what I have found really useful is the technical analysis of previous price charts and patterns, using indicators.</p><p>This technique works very well if there is no positive/negative news related to the security or the broad industry/economy in which the company operates. One can easily predict gap ups and gap downs, breakout levels (through support and resistances & volume indicators), target levels (Fibonacci projections and Elliot wave) etc by reading charts and analysing trends.</p><p>So yeah, it’s possible to predict overnight changes but remember …</p>