An evaluation of alternative explanations narasimhan jegadeesh and sheridan titman this paper evaluates various explanations for the profitability of momentum strat egies documented in jegadeesh and titman 1993. Momentum investing is a system of buying stocks or other securities that have had high returns over the past three to twelve months, and selling those that have had poor returns over the same period while no consensus exists about the validity of this strategy, economists have trouble reconciling this phenomenon, using the efficientmarket hypothesis. Momentum, reversal, and the trading behaviors of institutions roberto c. This paper has benefited from the excellent research. Pdf presence and sources of contrarian and momentum. Titman is from hong kong university of science and technology and the anderson graduate school of management, ucla. Jegadeesh and titman 1991 provide evidence on the relation between shortterm return. In the tests that follow, we compare the momentum strategies of jegadeesh and titman 1993 hereafter jt and moskowitz and grinblatt 1999 hereafter mg to a strategy based on the nearness of a stocks price to its 52week. Many researchers have shown that a momentum portfolio, which buys past winners and sells past losers, exhibits profits in the first 612 months. Jegadeesh and titman 2001 and jegadeesh and titman 2011 document momentums continued robustness in more recent years. Chan, narasimhan jegadeesh, and josef lakonishok abstract we examine whether the predictability of future returns from past returns is due to the markets underreaction to information, in particular to past earnings news. Crosssectional and timeseries determinants of momentum returns narasimhan jegadeesh university of illinois sheridan titman university of texas and the nber portfolio strategies that buy stocks with high returns over the previous 312 months and sell stocks with low returns over this same time period perform well over the following 12 months. An evaluation of alternative explanations narasimhan jegadeesh and sheridan titman abstract this paper evaluates various explanations for the profitability of momentum strategies documented in jegadeesh.
Total downloads of all papers by narasimhan jegadeesh. Similarly, stocks with high earnings momentum outperform stocks with low earnings momentum. Barberis, shleifer, and vishny 1998, daniel, hirshleifer, and subrahmanyam 1998, and hong and stein 1999 all developbehav. Their results indicated that profits of these strategies are not due to systematic risk.
Quick link to the paper unfortunately the method is. Implications for stock market efficiency, journal of finance 48, 6591. This paper examines the extent to which cultural differences influence the returns of momentum strategies. I want to implement a momentum strategy, followed by jegadeesh and titman 1993 with overlapping portfolios. The groundbreaking work of jegadeesh and titman 1993 attracted academic attention to momentum, or relative strength strategies. Individualism and momentum around the world by andy c. Crosssectional and time series determinants of momentum.
The momentum effect has been documented across different asset classes including equity, debt, currency and commodities. The evidence indicates that momentum profits have continued in the 1990s, suggesting that. Implications for stock market efficiency narasimhan jegadeesh and sheridan titman abstract this paper documents that strategies which buy stocks that have performed well in the past and sell stocks that have performed poorly in the past generate significant. This paper evaluates various explanations for the profitability of momentum strategies documented in jegadeesh and titman 1993. Narasimhan jegadeesh of emory university and sheridan titman of the university of texas at austin, found in a 2011 paper that u. The momentum effect is a widelydocumented phenomenon in finance. Since jegadeesh and titman 1993 reported the momentum anomaly, a large literature has documented the magnitude of momentum, its pervasiveness in many settings,1 and its potential explanations. Profitable momentum trading strategies for individual. One of the first studies to document this effect was written by jegadeesh and titman jegadeesh and titman momentum pdf the momentum effect is a widelydocumented phenomenon in finance. One of the first studies to document this effect was written by jegadeesh and titman. Jegadeesh and titman 1991 provide evidence on the relation between shortterm return reversals and bidask spreads that supports this interpretation. Implications for stock market efficiency narasimhan jegadeesh. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
The evidence indicates that momentum profits have continued in the 1990s, suggesting. Other financial and psychological considerations may also prolong momentum. Price momentum and trading volume lsv asset management. Momentumrelative strength strategies jegadeesh, titman.
Then methodology of jegadeesh and titman 1995 is used to decompose the contrarianmomentum profits into three elements. Wharton research data services wrds provides the leading business intelligence, data analytics, and research platform to global institutions enabling comprehensive thought leadership, historical analysis, and insight into the latest innovations in research. An evaluation of alternative explanations narasimhan jegadeesh and sheridan titman abstract this paper evaluates various explanations for the profitability of momentum strategies documented in jegadeesh and titman 1993. Once the industry momentum effect is controlled, momentum strategies are less profitable. You might want add this paper to your mustread list if you are a fan of momentum. Jegadeesh and titman 1993 estimate that semiannual turnover for a longshort momentum portfolio is 84. To examine how the momentum portfolios have performed, we use ken frenchs data in our book here is a link to the data description. Momentum by narasimhan jegadeesh, sheridan titman ssrn. Momentum trading strategies that exploit this phenomenon have been consistently profitable in the united states and in most developed markets. Jegadeesh, narasimhan and titman, sheridan, momentum october 23, 2001. Calculate returns of momentum strategy overlapping.
Jegadeesh and titman 1993, assumes a zerocost trading strategy, omits various which market frictions, such as sts, bidtransaction coask spreads, and short selling constraints. Momentum defining momentum academics first identified the momentum premium in 1993, when ucla scholars narasimhan jegadeesh and sheridan titman demonstrated that the strategy of buying stocks that have done well and selling stocks that have done poorly generated significant positive returns over 3 to 12month holding periods. Defining the momentum as the trend for the stock price following their recent performances, the authors adopted a set of strategies for the north american market between 1965 and 1989. Momentum strategies attempt to exploit continuation in stock returns. In addition, lo and mackinlay 1990 argue that a large part of the abnormal returns documented by jegadeesh and lehmann is attributable to a delayed stock. Jegadeesh and titman concluded that an underreaction to firmspecific information was the likely cause of momentum. First, we show that the price momentum effect documented by jegadeesh and titman. The evidence indicates that momentum profits have continued in the 1990s, suggesting that the original results were not a product of data snooping bias. Journal of investment management second quarter 2016. Fe2i slides for jegadeesh and titman jegadeesh titman on. Gutierrez is from the lundquist college of business, 1208 university of oregon, eu gene, or 974031208, email. This set of python code is written based on the original sas code that replicates the jegadeesh and titman jf, momentum strategy. One of the first studies to document this effect was written by jegadeesh and titman jf.
The evidence indicates that momentum profits have continued in the 1990s suggesting that the original results were not a product of data snooping bias. Momentum portfolio returns jegadeesh and titman, 1993 are one of the most persistent,1 puzzling, and hence studied, patterns in finance. It argues that investors either underreact or belatedly overreact to. We have chosen to focus exclusively on equity as the momentum effect is most widely documented within this asset class. Jegadeesh and titman 2001, 2011 document the continued robustness of momentum in. Since jegadeesh and titman 1993 jt reported the momentum anomaly, a large literature documented the magnitude of momentum, its pervasiveness in many settings,1 and its potential explanations. The trading strategy in jegadeesh and titman buys the decile of stocks with the highest past returns and sells the decile of stocks with the lowest past returns. The first authors to document the existence of momentum were jegadeesh and titman 1993. In further support of the anchoring hypothesis, hong and stein 1999 found that it takes time for information to be fully reflected in stock prices. Jegadeesh, narasimhan and titman, sheridan, momentum august 29, 2011. Jegadeesh and titman momentum pdf the momentum effect is a widelydocumented phenomenon in finance. So, jegadeesh and titman jd set out to prove that relative strength strategies are successful for certain time horizons. Sheridan dean titman is a professor of finance at the university of texas at austin, where he holds the mcallister centennial chair in financial services at the mccombs school of business.
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