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Re:Show HN: Bitcoin derivatives – call and put options by oscilloscope on Monday March 24, 2014 @07:34PM (#7462574)
Quick question about MtGox data, since the relevant crowd may be here. Do the activities of User 15 in these charts appear to have anything to do with options trading?

http://bitcoin.stamen.com/

Re:Show HN: Bitcoin derivatives – call and put options by ciscoriordan on Monday March 24, 2014 @07:54PM (#7462691)
To me that looks like attempted manipulation of the spot rate.