Comes from four prior symmetry projections,one 127.2 extension and a 50% fib retracement... Last week took the Mar 645 call and 640 put, long biased with a 20 point delta difference. The bracket trade is down a bit here but if it continues downward the deltas will swap and it could go green again. There is the 161.8% extension down at 638.41 in the cluster. I'd like to see that hold but if it doesn't I won't be sweating it.
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