Share buyback programs are generally viewed positively by the market as they often lead to an increase in the stock price. By buying back shares, Aurinia is signaling confidence in its own financial health and future prospects. This could lead to a short-term positive impact on AUPH's stock price as the market reacts to the news. The importance is rated high due to the significant amount of the buyback, indicating a strong commitment from the company to return value to shareholders.