Just been watching the stock market today and it's been rough out there. The S&P 500 dropped over 1% to close around 6,837, Nasdaq fell 1.13%, and the Dow took a real hit with a 1.66% slide to 48,804. Tariff uncertainty is definitely spooking investors right now.

The big story is Trump's weekend announcement pushing global tariffs up to 15% from the 10% he'd declared earlier. That alone sent multinationals and financial stocks into a tailspin - companies like IBM, American Express, Visa, and JPMorgan Chase were among the heaviest losers. The Dow alone dropped over 800 points.

Tech was a mixed bag though. Nvidia actually managed to climb nearly 1% despite the broader selloff, which makes sense since everyone's waiting for their earnings report Wednesday. That earnings call could be a real game-changer for the whole sector. If they deliver solid numbers and strong guidance on AI infrastructure spending, could reignite the rally. But if they disappoint, watch out - the Nasdaq could get hit hard.

Meanwhile, some interesting moves in pharma. Novo Nordisk got crushed on weak obesity drug data, while Eli Lilly bounced higher as investors keep betting on their weight-loss drug dominance. Salesforce also took a beating today.

I'm definitely keeping an eye on tech volatility over the next couple days leading into that Nvidia report. This market's got a lot riding on it.