The board of another fast-growing U.S. company, Skechers USA, has decided to implement a three-for-one stock split on Oct. 15, subject to shareholders' approval at its annual meeting on Sept. 24. The price of its shares nearly tripled in the past 12 months. At its stock market close of $142.73 yesterday, it gave the company a market capitalization of $7.43 billion, but it was below a 52-week high of $163.60 a share.