Mark Cuban told "The David Rubenstein Show" about his buy-and-hold stock strategy.<br />Business Insider reports the strategy led him to big returns on Netflix and Amazon.<br />The "Shark Tank" investor owns the NBA's Dallas Mavericks said he stuck with companies he believed in.<br />He owned Netflix stock since it cost $50 a share. The streaming service closed Wednesday near $550.<br />He owned Amazon shares at just under $2,000. On Wednesday, Amazon closed at $3,441.85.<br />Cuban also said he used to be an active trader but no longer was. <br />"There's a lot more money chasing fewer stocks, so it's harder to trade and be successful," he said.
