Taylor Swift 's engagement announcement on Tuesday sparked the latest example of the celebrity's influence in America's corporate and economic world.

The "Love Story" singer's joint social media post sharing the update with her now fiancé, NFL player Travis Kelce , sent fans buzzing — and even some stocks and prediction markets moving.

Signet Jewelers , one of few publicly traded jewelry companies on major exchanges, jumped more than 6% on Wednesday. That builds on gain of around 3% in Tuesday's session, which included a pop directly following Swift and Kelce's afternoon post.

That jump comes after fans raced the decipher what type of ring Swift opted for from the photos. Multiple industry professionals confirmed the diamond was a cushion cut. Stock Chart Icon Stock cha

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