Interlink Electronics Inc. Chief Executive Steve Bronson rang the closing bell at the Nasdaq in Times Square on Monday. The Westlake Village company began trading on the Nasdaq Capital Market in April under the symbol LINK. The company had previously traded on the over-the-counter market. The Nasdaq Capital Market used to be called the Nasdaq SmallCap Market, one of three market tiers on the Nasdaq. The Nasdaq requires its trading companies to meet minimum thresholds for the number of publicly traded shares, total market value, stock price and the number of shareholders. Interlink makes touchpads and computer mouse products for rugged environments such as oil refineries, automobile assembly lines and machine shops. It also serves the medical device market. Shares closed up 35 cents, or 3.1 percent, to $11.65 on the Nasdaq.