Los Angeles supermarket investor Ron Burkle has increased his bet on Wild Oats, the high-end food store, reports the Denver Post. The news came in a 13D filing with the SEC, which anounced that Burkle’s investment vehicle had increased its stake in the Colorado-based chain to 14.9 percent.

The announcement insisted that the investment would remain passive but analysts weren’t so sure. “He’s betting that the current course of business is going to prove financially rewarding or betting that, with some changes, Wild Oats can ultimately be a more formidable competitor in this space,” RBC Capital Markets analyst Ed Aaron told the paper.

And the filing did leave open the possibility that Burkle would take a more active role in the company. Wild Oats has two stores in Las Vegas and one in Reno.