Sponsorship deals are often seen as a means to enhance a company's public image and brand value. While not directly related to Amgen's core business operations, the sponsorship of the Irish Open could be perceived positively by investors as a sign of the company's growth and commitment to expanding its global presence. This could potentially have a positive impact on Amgen's stock price in the short term, especially considering the recent acquisition of Horizon Therapeutics, which may synergize with the company's marketing strategies.