ACE Limited, now known as Chubb Limited following a merger, has received strong financial strength ratings from various independent rating agencies. These agencies typically assess a company's ability to meet its ongoing insurance obligations, and ACE has historically performed well in this regard. Ratings such as A.M. Best, Standard & Poor's, and Moody's have recognized ACE for its financial stability and sound management practices. For specific ratings, it is advisable to consult the latest reports from these agencies or visit the current ACE or Chubb website, as they provide up-to-date information on financial ratings and the overall financial status of the company. Please note that financial ratings can change, so checking the most recent data is important for accuracy.