Any growth will affect short term positions. The reason for this is the volatility of bitcoin that comes through corrections after bubbles. It's highly suspected that a lot of people have sell orders in on bitcoin hitting 10,000. When that's reached, if a lot of people drop their bitcoin, we'll see a very strong correction that may drop it sub 9000. Short term traders should probably sell asap, it may be dangerous if they try to buy a lot more at 10,000.