I think it is a little funny that the stock started rising on July 11 and 12 based on news that was released on July 17. There was no particularly interesting news reported around that time, yet the close on 7/12 was 4.4% higher than the close on 7/10. The volume on 7/12 was 5.4 million shares, comparing to a three month average of 3.3 million. 7/16 also had notable volume of 5.8 million. Today, the first trading day after the quarterly announcement, volume is 9.8 million (so far) and the price is up 5.6%.
Was material, non-public information being used for trades on 7/11 and 7/12? It sure looks like it to me.
(Full disclosure: I sold a little on 7/8. Would have been nice to have gotten the 7/12 price.)
On July 10th, Jon Najarian recommended XLNX on CNBC show Fast Money and disclosed that he had upside Sept calls on this name. It's what drew me to the stock and surely many others in the following days.