Morgan Stanley's involvement in the potential sale of TriNet Group may have a minor positive impact on the bank's stock, as it showcases their expertise in facilitating such deals. However, the impact is likely to be limited, as this is just one of many deals the bank is involved in.

The news of TriNet Group working with Morgan Stanley to explore a sale could attract potential buyers and investors, leading to increased interest in the company's stock. This may result in a short-term positive impact on the stock price. However, as no official announcement has been made yet, the impact may be limited.