By Reuters Staff 3 Min Read FILE PHOTO: The U.S. Securities and Exchange Commission logo adorns an office door at the SEC headquarters in Washington, June 24, 2011. REUTERS/Jonathan Ernst/File Photo WASHINGTON (Reuters) - The U.S. Securities and Exchange Commission on Friday suspended trading in more securities that have seen jumps in both prices and trading volumes since late January amid social media interest. The SEC temporarily suspended trading of Marathon Group Corp, Affinity Beverage Group Inc, and Sylios Corp beginning on Friday and ending on March 4, the SEC said in statements published on its website. The suspensions are the latest effort by the SEC to address soaring retail investor interest driven by conversation on social media platforms, most notably seen in a surge and subsequent plunge in share prices of GameStop Corp. Last week, the regulator suspended trading in a defunct stock.