<ul data-eligibleForWebStory="true">Susan Li, Meta's CFO, shared her embarrassing first day on the Morgan Stanley trading floor where her young age was highlighted.Li started at Morgan Stanley at 19, fresh out of college, and her age caused a stir on the trading floor.Recalling her first day, Li mentioned feeling mortified by the attention she garnered for her age.She discussed the challenges of advancing quickly through the education system.Li credited her rapid educational progression to a supportive school system and her parents' encouragement.Despite starting young, Li became Meta's CFO at the age of 36, positioning her as one of the youngest in a similar role.During her time at Morgan Stanley, Li worked with Michael Grimes, a prominent figure in technology investment banking.Li praised Grimes for his energy, curiosity, and work ethic, which served as an inspiration to her.Both Morgan Stanley and Meta declined to comment on Li's statements to Business Insider.Li admired Grimes' dedication and learning attitude, setting a standard for excellence in her own career.