Amazon remains a powerhouse, and its cloud computing segment is getting bigger. Moody's and American Express are financial stocks that fit the Buffett mold.

Amazon said Tuesday that it has started offering faster U.S. deliveries of selected products for a fee, including pantry staples, clothing, over-the-counter medications, cleaning supplies and electronics.

Some Amazon.com bears think that artificial-intelligence agents will cause the e-commerce company to lose business, but a Needham analyst is taking the opposite view.

Amazon.com, Inc.'s AWS reached a $142 billion run rate, growing 24% YoY, supported by a $244 billion backlog rising 40% annually. AWS operating margin held at 35%, generating $12.5 billion income, reinforcing its role as AMZN's primary profit engine. Amazon's silicon segment surpassed $10 billion run rate, with Graviton used by over 90% of top enterprise customers.

Top insights from the latest market news from Tuesday, March 17, from The Motley Fool analysts on Team Rule Breakers and Team Hidden Gems.

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Amazon says it has begun offering one-hour and three-hour delivery options in the U.S. The new service, announced Tuesday (March 17), comes as the eCommerce giant looks to fend off competition in the delivery space from main rival Walmart.

Here are five key things investors need to know to start the trading day.

Understanding the Power Inflow Signal