5 companies on the radar of a top stock buyback expert By: MarketWatch March 21, 2017 at 04:18 AM EDT Buyback strategies are holding up well in this market, writes Mark Hulbert. Read More >> Related Stocks: Houghton Mifflin Har La Quinta Holdings Inc. Common Stock Rambus Inc S&P 500 Buyback ETF SPDR Sirius XM Holdings