shares of software developer heartcore enterprises inc soared 198 on wednesday after it detailed a 35 million share repurchase plan the tokyobased company said wednesday that its board of directors authorized a plan that will allow the company to repurchase up to 35 million of its stock through open market purchases privately negotiated transactions or other means heartcore expects to fund the purchases through existing cash balances chief executive sumitaka yamamoto said in prepared remarks that the repurchase plan reflects the boards confidence in the trajectory of the organization and our ability to generate longterm shareholder value