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I say things on Twitter


Trading in GDX is weird

I stuck this on the Twittermachine Friday evening, after the normal end-week data dump had filled my XLS charts.
You're not supposed to get much comeback from a wonky financials post on a Friday evening but from the number of RTs and Likes, it's not just me that thinks this is odd. Text of Tweet here:
Something bizarre: The last 7 WEEKLY closes of $GDX are:
May 18th: $22.19 
May 25th: $22.31 
June 1st: $22.31 
June 8th: $22.36 
June 15th: $22.23 
June: 22nd: $22.18 
June 29th: $22.31 A spread of 18c? 
A 0.8% max variation over 7 weeks? 3 closes out of 7 at exactly $22.31? WTF?