Michael Bloomberg is an American businessman, politician, and philanthropist, known for co-founding Bloomberg L.P. and serving as New York City's mayor for three terms (2002-2013). He pursued socially liberal and fiscally moderate policies, focusing on urban infrastructure, gun control, and environmental protection. Bloomberg faced criticism for the controversial stop-and-frisk policy. He briefly ran for the 2020 Democratic presidential nomination, spending nearly $1 billion on his campaign. As of 2024, he's among the world's wealthiest individuals and has donated billions to philanthropic causes.