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The January effect is a hypothesis that the stock market tends to outperform in the first month of the year. The effect was first observed in 1942 by investment banker Sidney B. Wachtel and that small-cap stocks tend to perform better than the broader market in January.
There are a few reasons why stock prices tend to rise in January but I wanted to find out if the January effect holds true in Singapore as in the U.S.
Can investors simply ride the January effect and make decent gains simply by investing in the STI for the first month of every year?
I decided to do some research: I had a look at the STI chart and recorded how much the STI gained (or lost) from its opening price on the first trading day in January to its opening price on the first trading day in February from 1990 to 2015.
STI 1990-2015: Yahoo Finance
Does the STI rise every January and, if so, by how much? Here are the results:
|Year||Jan Open||Feb Open||% Change|
From the data over the last 26 years:
So it seems in the overall scheme of things, the STI does tend to rise in January. And in the years the STI posted gains in January, the average return was 5.39%. Pretty damn decent!
However, when you include all the flat/losing years, the overall average return is only 0.42%.
The reason for this? The STI suffered double-digit losses in 1995, 1998, 2000, and 2008 which pulled overall returns down. If you recall, we had Nick Leeson sending Barings Bank to oblivion and the Kobe earthquake in 1995, the Asian Financial Crisis in 1998, a prelude to the Dotcom Bubble in 2000, and Global Financial Crisis in 2008.
So what does this mean for investors like us?
Bottom line, the STI does tend to rise in January but the moment the bad news seems to be getting out of hand, it’s best that you get out!
In my next article, I’ll explore if the January Barometer also holds true for the STI. Stay tuned!