Despite adding 28.5% this year to trade at $12.17, RMBS got hit with a $1.50 price-target cut to $13.50 at Jefferies. The brokerage firm isn't the only one with doubts about the stock, either -- short sellers are skeptical, as well. Specifically, 7.3% of Rambus Inc.'s float is sold short, which would take nearly 17 sessions to buy back, at the equity's typical trading volumes.
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