Isn't spgi the company not the index?

I'm seeing 17% projected growth in earnings: https://ycharts.com/indicators/sp_500_earnings_per_share_ttm...

P/e is 24. ($493 billion quarterly earnings, $47 trillion market cap). - and yes, nvda is literally alone 6% of sp500 earnings.

Peg is 1.4 as a comparable to the way I calculated Nvidia.