Is S&P Global, Inc. overvalued or undervalued?

As of 30 June 2025, S&P Global, Inc. has moved from fair to expensive in its valuation grade. The company is currently overvalued, as indicated by its P/E ratio of 42, which is higher than its peer Moody's Corp. at 73.62, and its EV to EBITDA ratio of 27.64 compared to Moody's 49.32. Additionally, the PEG ratio stands at 1.11, further supporting the notion of overvaluation when considering growth expectations.
In terms of peer comparison, S&P Global's valuation metrics suggest a premium over its industry, with a P/E ratio significantly above the industry average. The stock has underperformed relative to the S&P 500, with a 1-year return of -2.26% compared to the S&P 500's 17.14%, indicating a lack of investor confidence in its current valuation.