Sometimes. IBM was still considered big when Buffet invested in them early in the 2010s. And it took almost a decade worth of bad performance for him to finally

Sometimes. IBM was still considered big when Buffet invested in them early in the 2010s. And it took almost a decade worth of bad performance for him to finally exit. It might be slowly sliding into irrevelance but its stock hasn't completely tanked -- during or after that period.