Mario Gabelli acquired 530k Bank Of America shares worth $26.8M. That's 0.25% of their equity portfolio (101st largest holding). The first Bank Of America trade was made in Q1 2001. Since then Mario Gabelli bought shares 25 more times and sold shares on 58 occasions. The stake costed the investor $11.5M, netting the investor a gain of 133% so far.
https://www.investing.com/news/company-news/bank-of-america-executives-trade-gabelli-utility-trust-shares-worth-over-6000-93CH-3506579