Prominent investor John Paulson made his largest purchase ever ($312 million), nearly doubling his holdings, which is a very strong bullish signal of confidence that the stock is undervalued.

A major insider, John Paulson, made a massive follow-on purchase of over $310 million, indicating an exceptionally strong conviction in the stock's significant upside potential.

A director with a strong track record made a significant $21 million insider purchase, suggesting a high level of confidence in the company's near-term future and that the stock may be undervalued.