From January 15 to June 13, the short interest in Mindray Medical (MR) rose from 584K to 7.0 Mullion, the aveage price the stock traded during that time was approximately 34.69. With the stock up over 40, not many of those horts are in a winning position and that makes them vulnerable to a squeeze. Looking more closely at the data, you can see that from Jan 31 to Feb 15 the short position swelled from 707k to 4.5 milliion, the average pricce the stock traded during that time was ~35.00. That means approximately 3.8 million shares were shorted near 35, thats gotta hurt. If those shorts begin to aggressively cover this stock could see significant upside. Risk Management is job #1.