Billionaire Warren Buffett sold 74% of Berkshire’s stake in Apple and has piled more than $4 billion into a “Magnificent” stock that’s up over 11,000% since its IPO

The most important data release of the entire fourth quarter occurred on Friday, Nov. 14, and there’s a good chance you might have missed it.

No later than 45 calendar days following the end of a quarter, institutional investors with at least $100 million in assets under management are…