PayPal shares could rise 40% as digital wallets proliferate, the Aug. 31 edition of Barron's declared, stating the company has loads of opportunities and cash to grow. Although the former eBay (NASDAQ:EBAY) unit's shares have dropped since its recent spin-off, the "promise of PayPal Holdings (NASDAQ:PYPL) hasn't wavered." The firm is now clear to do deals with big vendors like Staples (NASDAQ:SPLS) and move into back office operations and other services.