ALTR: May calls signal move up

This issue popped on my screen today when its daily call volume spiked 3.5 times its norm. I checked the news releases and nothing special stood out. I can see a nice little uptrend in place the past few weeks. I'm not thrilled its near resistance but it did pull back a bit and volume didn't increase so it has the makings of a break out. It also had a large midday volume and price spike. Something is happening. It could just be a rumor. But this is exactly what a stock does before a nice pop too. I'm going long for a week or so. You might wanna take a look.