==== current pe of sp500 ====
tags | pe, yields

https://www.multpl.com/s-p-500-pe-ratio/table/by-month - SP500 PE Ratio by Month
  * monthly PE going all the way back to 1871-01-01
  * Also gives PE for today

https://www.wsj.com/market-data/stocks/peyields gives
  * P/E ratio for
    * the trailing 12 months
    * a year ago (for trailing 12 months)
  * Forward P/E ratio for the next 12 months
  * Dividend yield for
    * the trailing 12 months
    * a year ago (for trailing 12 months)
  * Data is available for S&P 500, Nasdaq 100, Russell 2000 indices
  * Data is updated weekly on Friday.
  * Data source: Birinyi Associates 

The same information is also available at https://www.barrons.com/market-data/stocks/us/pe-yields

==== links I came across ====
  * https://ycharts.com/indicators/sp_500_monthly_return
  * https://ycharts.com/indicators/sp_500_monthly_total_return
  * https://ycharts.com/indicators/sp_500_pe_ratio
  * https://ycharts.com/indicators/sp_500_price_to_book_ratio
  * https://ycharts.com/indicators/sp_500_market_cap
  * https://ycharts.com/indicators/sp_500_1_year_return
  * https://ycharts.com/indicators/sp_500_eps
  * https://ycharts.com/indicators/sp_500_earnings_per_share_forward_estimate