Commentary It’s a day that will live in infamy. For now. On Thursday, Feb. 3, Meta Platforms (the company formerly known as Facebook) announced its earnings and tanked some 26.4 percent in the blink of an eye. In that same blink, some $232 billion of market capitalization was wiped off the face of the company. That’s a pretty hefty ding in the price. (And apparently a record for a single stock. But most companies don’t have $232 billion in market cap to give up.) Unfortunately Meta’s announcement proved one thing: that mega-cap big tech companies hold outsized sway over the market as a whole. They took the S&P 500 down 112 points, or 2.5 percent, as well. It’s a shocking reality. Prior to the slide, the market capitalization of the S&P 500 Index was roughly $40 trillion. And the top eight companies that make up the index comprise roughly one-third …