Anonymous sources familiar with the situation claim Intel and Altera couldn't agree on a price and that the firms haven't spoken in over a week. Intel was reportedly willing to pay a figure around the low $50-range per share. In the days before rumors about an acquisition leaked, Altera was trading around $35.
Intel has stopped its talks with Altera about a potential acquisition, according to sources familiar with the situation.
Altera stock fell about 10 percent in pre-market trading. When news of the talks first broke in March, Altera stock posted a 28 percent jump.
The two companies have not spoken in more than a week, sources said, as neither party could agree on a price.