December, from Hernan Avella
Since 1985, looking at the Vanguard 500 Index Fund, there have been 20 years where the cumulative return up to November was greater than 10%. Of those, only in 3 years (1986, 1996, 2014), the fund experienced negative returns in the month of December.
1985: 4.67%
1986: -2.64%
1988: 1.66%
1989: 2.38%
1991: 11.41%
1995: 1.93%
1996: -1.96%
1997: 1.72%
1998: 5.81%
1999: 5.98%
2003: 5.22%
2006: 1.39%
2009: 1.95%
2012: 0.90%
2013: 2.51%
2014: -0.26%
2017: 1.10%
2019: 3.01%
2020: 3.84%
2021: 4.47%
T-Statistic = 2.04, p-value = 0.048