The stock of Everpure surged following news that activist investor Jana Partners has acquired a stake in the company. The increase in Everpure's stock was significant, reflecting positive market sentiment towards the new investment by Jana Partners. The development was reported by Investor's Business Daily, indicating that the involvement of the activist investor had a noticeable impact on Everpure's stock performance. This news exemplifies the influence that activist investors like Jana Partners can have on stock movements and investor confidence in a company.