Assuming a gain today, the S&P will guarantee itself of having the fewest down days in a given month since at least October 2006, when the index closed down on 5 trading sessions. So far in December, the S&P has fallen on just three days, with all fractional declines.
How rare of an occurrence is that?
Since 1950 for the S&P 500:
0-1 days of declines in a month
2 days of declines in a month
Once – November 1968
3 days of declines in a month
4 times – September 1954, June 1955, January 1965, July 1989
4 days of declines in a month
7 times – January 1954, January 1961, January 1967, July 1967, September 1968, November 1980, May 1990
5 days of declines in a month
26 times – last being in October 2006; has only happened 9 times since 1973
And the statistic could become even more impressive if the S&P finishes up another 1-2 more times after today too.
Additionally, the lack of volatility has been noticeable. The VIX is hovering near 8-month lows too, but notice the Dow has had a percent change (up or down) of more than 1% on just one trading day this month. That has happened just one other time over the last 3.5 years (March 2010).
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