$SPGI at ~21x forward earnings.
What you own at that price:
Roughly half the global credit ratings market. Almost every bond issued on earth is rated by them or Moody's.
The S&P 500 itself. Every fund tracking it pays a license fee.
Platts, which sets the benchmark most of the world's oil is priced against.
The data terminal a large share of Wall Street runs on.
Four businesses nobody can build a competitor to, at a multiple the market hands to average companies.