JANUARY EFFECT
There are lots of citations for this. This one is from
http://stocks.miningco.com/library/weekly/aa121597.htm:
The January Effect
by Michael Griffis
Small-cap stocks usually outperform large-cap stocks from the end of
December through January.
This phenomenon is called The January Effect. Although short lived, it is
persistent. It has occurred for at least the last 15 years (probably longer),
despite the fact that it is widely known and frequently discussed.
The cause? Portfolio balancing and tax-loss selling, especially by mutual
and pension funds, may be responsible for much of the performance differences
between small cap and large capitalization stocks.
There is some research suggesting that the smaller the company, the more
pronounced the effect. In fact, up to half of the annual performance of many
small cap stocks may be attributable to The January Effect.
(...) A similar seasonal phenomenon--The Value Effect--occurs between
Value Stocks and Growth Stocks. Value Stocks outperform Growth Stocks during
the short transition from one year to the next. The Chicago Mercantile
Exchange has documented The Value Effect on their web site...
Another article (with links) can be found at
http://www.forbes.com/forbes/121696/5814392a.htm.
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