Shares of Digital Domain Media Group Inc. fell as much as 45 percent after the company, which makes digital special effects for TV and films, said that it may consider bankruptcy protection as it looks to pay down debt, Reuters reported on Friday. The Academy Award-winning company, which created special effects for movies such as "Titanic" and "Transformers," defaulted in paying interest on $35 million senior notes on Wednesday. Digital Domain also said Chief Executive John Textor has resigned. The company said it was weighing options on appointing a new CEO. Textor said in a regulatory filing on August 29 that he planned to take the company private, but did not give details. Textor owns a 23 percent stake in the company.