Shares of Akamai Technologies (NASDAQ: AKAM) rose 12.6% in the first half of 2018, according to data from S&P Global Market Intelligence. It was a bumpy ride that seemed destined for even greater gains, but Akamai investors aren't complaining -- share prices have soared 54% higher over the last 52 weeks.In March, Akamai announced a shareholder value program in cooperation with activist investor firm Elliott Management.