(Reuters) – Shares of Amazon.com Inc jumped over 5% after the e-commerce giant’s share split and buyback moves stand to draw more investors to a stock whose recent performance has been lackluster despite skyrocketing since going public 25 years ago. The company on Wednesday announced a 20-for-1 stock split, its first since 1999, and a $10 billion share buyback. It comes on the heels of a similar split announced by Alphabet Inc earlier this year. “Amazon’s management is looking to instill fresh confidence,” AJ Bell Investment Director Russ Mould said, adding that the buyback was the company’s f…