$GLD US$(O87.SI)$ don't sell gold etf these guys are playing 1/10 ounce as the price the gold is 4200 so the etf should be 420. So someone is manipulating to the tune of 35 dollars or they cleverly and quietly reduced the ounce to 1/11
$GLD US$(O87.SI)$ guys don't sell the gold until this deviation worked out as per their prospects 1/10 ounce is the price it should reflect small tacking error is fine. But now the error is 25 dollars per share