Yesterday’s rally in US equities took the S&P 500 to yet another new all-time closing high, which was the 24th such all-time closing high in 2017.  With the year not quite half over, if the pace of the first six months keeps up in the second half, the S&P 500 would be poised for 51 all-time closing highs this year.  Obviously a lot can change in the second half, and even a moderate pullback could halt the accumulation of new highs.  Conversely, there was a two-month period of consolidation already this year where there were no new highs for the market, so if we see a slow steady grind higher in the second half, the number of new highs could really start to pile up.

The chart below shows the annual number of new all-time closing highs for the S&P 500 going back to 1929.  Here, you can really see how a sharp pullback can really halt the frequency of new highs right in its track.  After there were 45 new highs in 1929, it took 24 years until 1954 before the S&P 500 did it again.  From that point on, the pace of new highs went in waves with many occurrences from the mid-1950s to mid-1960s and again in the 1980s and 1990s, while the pace slowed in the 1970s and 2000s. Since 2013 when the S&P 500 finally took out its pre-financial crisis highs, the pace has picked back up again.  If the current pace of highs in the S&P 500 continues, and the S&P 500 closes at 50 or more all-time highs this year, it would rank in the top five of all years.  In order to crack 1995’s all-time record of 77 for a single year, though, we would have to see one heck of a rally in the second half.

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