That's the secret.'" The shares to be issued in the stock split will be payable after market close on Friday for shareholders of record at the close of business on Thursday. Shareholders will receive a distribution of two additional shares of common stock for each share held. Walmart's common stock will begin trading on a post-split basis at the market open on Monday. The stock split and final ratio were approved by Walmart's board. The company expects that the stock split will increase the number of shares of Walmart's outstanding common stock from approximately 2.7 billion shares to approximately 8.1 billion shares.