During the past week (on February 15), the value of the S&P 500 closed at yet another all-time high at 2349.25. As of today, the forward 12-month P/E ratio for the S&P 500 stands at 17.6, based on yesterday’s closing price (2347.22) and forward 12-month EPS estimate ($133.49). Given the high values driving the “P” in the P/E ratio, how does this 17.6 P/E ratio compare to historical averages? What is driving the increase in the P/E ratio?
The current forward 12-month P/E ratio of 17.6 is now above the four most recent historical averages: five-year (15.2), 10-year (14.4), 15-year (15.2), and 20-year (17.2).
In fact, this week marked the first time the forward 12-month P/E has been equal to (or above) 17.6 since June 23, 2004. On that date, the closing price of the S&P 500 was 1144.06 and the forward 12-month EPS estimate was $65.14.
Back on December 31, 2016, the forward 12-month P/E ratio was 16.9. Since this date, the price of the S&P 500 has increased by 4.8% (to 2349.45 from 2238.83), while the forward 12-month EPS estimate has increased by 0.5% (to $133.49 from $132.84). Thus, the increase in the “P” has been the main driver of the increase in the P/E ratio to 17.6 today from 16.9 at the start of the first quarter.
It is interesting to note that analysts are projecting record-level EPS for the S&P 500 for Q2 2017 through Q4 2017. If not, the forward 12-month P/E ratio would be even higher than 17.6.