I'm with you with that. Fridays vol. was not extreme high (500k). The happy few that could anticipate the rumor had some information not accessible for the crowd. The latter will start accumulating this week, considering any price below $7 at "low risk". When a deal will be settled is less important. The real value should be valuated above the IPO of 7$, because revenue, profit and market share improved substantialy over the last 30 years. And if it's just a rumor... even than the stock will be bright spot on the WS-radars.
The speculation did not start in the US. CKSW has a lot of ties in Israel. It is easier to get the wind that somtehing might be happening in Israel than in the US. Notice that the article says that the company did not want to make a comment about it.
I think the innuendo of "suspiciousness" in this case is unwarranted. Unless you were one of the fools who sold on Friday and is now on the outside looking in.