Despite markets facing the first day of a government shutdown, the SPX and NDX hit new all-time highs with stocks closing higher. Nvidia (NVDA) made its own record high and hit a second milestone on the same day: a $4.5 trillion market cap. U.S. pharma stocks rallied strong as President Trump's pharma import tariffs go into effect, while Pfizer (PFE) gained more traction on a Trump-centric deal. The U.S. government taking a stake in Lithium Americas (LAC) sent the small cap stock soaring. Marley Kayden takes investors through the big session on Wall Street.