Do they normally move the same percentage in opposite directions or are there other factors in how they move relative to each other? Also, does movement upwards in one, move the other one downwards the same percentage or is it the same amount of money? Are they ever at the same level? Thanks in advance for replies.
Submitted October 12, 2016 at 06:15PM by ChibiMarsHunter http://ift.tt/2eh3X3F
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