Skullcandy may go private. Rick Alden, founder and former chief executive of the struggling American supplier of headphones, is exploring ways of acquiring the shares that he doesn't presently own. Ptarmagin, a fund controlled by him, owns 12.7 percent of the public company's shares. The stock opened at $20 when Skullcandy went on the stock exchange in 2011, but it has been trading lately as low as $3.50. It has been suggested that $5.50 to $6.50 would be a possible buyout price.