Which institutions have adjusted their ratings for well-known companies recently?

Recent rating adjustments for well-known companies by institutions are as follows:

1. **Johnson & Johnson (JNJ)**: Standard & Poor's (S&P) reaffirmed Johnson & Johnson's AAA credit rating in April, despite pointing out factors such as increased long-term debt and adjusted net leverage. However, S&P also acknowledged J&J's ability to quickly reduce its leverage.
2. **Main Street Capital**: Fitch Ratings affirmed Main Street Capital's senior secured debt rating of 'BBB', with a stable outlook, reflecting good recovery prospects in the non-bank financial institution sector.

These adjustments reflect institutional views on the financial health and risk profiles of these companies, which can influence investor perceptions and market dynamics.