The announcement of Roundel achieving over $1.5 billion in annual revenue highlights the success and expansion of Target's advertising business. This is likely to be viewed positively by investors, as it demonstrates Target's ability to diversify revenue streams and capitalize on the growing digital advertising market. The significant revenue figure suggests that Roundel has become a substantial part of Target's overall business, which could lead to increased investor confidence in Target's growth prospects and potentially drive the stock price up in the short term.