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Description of Momentum Factor
for Emerging Markets
Monthly Returns:
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January 1990 – July, 2024
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Annual Returns:
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1991–2023
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Construction:
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All returns are in U.S. dollars, include dividends and
capital gains, and are not continuously compounded.
The 2x3 sorts on size and lagged momentum to construct WML are formed monthly.
For portfolios formed at the end of month t–1, the lagged momentum return is a stock's cumulative
return for month t–12 to month t–2. The momentum breakpoints for a country
are the 30th and 70th percentiles of the lagged momentum returns of the big
stocks of the country.
The emerging portfolios use momentum and size breakpoints for each country. The independent 2x3 sorts on size and momentum
produce six value-weight portfolios, SL, SN, SW, BL, BN, and BW, where S
and B indicate small and big and L, N, and W indicate losers, neutral, and
winners (bottom 30%, middle 40%, and top 30%).
WML is the equal-weight average of the returns for the two winner
portfolios for emerging markets minus the average of the returns for the two loser
portfolios,
WML = 1/2 (Small High + Big High)
– 1/2 (Small Low + Big Low).
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Stocks:
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The six portfolios used to construct WML each month include stocks with
prior return data. To be included in a portfolio for month t (formed at the
end of the month t–1), a stock must have a price for the end of month t–13
and a good return for t–2.
Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Malaysia, Mexico, Pakistan, Peru, Philippines, Poland, Qatar,
Saudi Arabia, South Africa, South Korea, Taiwan, Thailand, Turkey, United Arab Emirates.
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Data:
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The raw data incorporate data from both International Finance Corporation and Bloomberg for 1989 to 1994 and from Bloomberg for 1995 to present.
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