RE: RE: short position comment Because brokerage firms aren't very picky about paying a good price on such occasions, the stock can spike dramatically, especially since market makers responsible for providing liquidity for a stock often see forced buy-ins as an opportunity to make a quick killing by temporarily raising their prices. Forced buy-ins may result from a trade going so much against a short-seller that he gets a margin call from the broker to either put up more cash or risk losing the position. Other times, it simply represents a change in short-term supply and demand exacerbated by increased trading volume and rapid turnover.