Private equity firm Thoma Bravo may acquire Symantec, according to Reuters. It's unclear if Symantec has received a formal takeover offer, but shares in the cybersecurity company are up 13 percent today amid the buyout speculation. The company's current market capitalization is $14.52 billion, according to Yahoo Finance.The M&A report comes a few days after Symantec disclosed better-than-expected quarterly revenues -- though the company's overall business is contracting amid intense competition from cybersecurity startups like AlienVault (recently acquired by AT&T), Carbon Black, Cylance and Crowd Strike, among others.Symantec itself has been making acquisitions -- including two deals that were disclosed yesterday.