A portion of this post originally appeared in the Business Insider Today newsletter. You can sign up for Business Insider's daily newsletter here. Buckle up: Roughly $15 trillion of market cap is set to report earnings in a span of less than 36 hours. This Wednesday and Thursday are setting up to be an absolute whirlwind, with Alphabet, Meta, Microsoft, Amazon, and Apple all checking in on Wednesday and Thursday. It's not just the size of the companies reporting. They're also in the middle of the on ...