Industry 52-Week High Momentum in Stocks

Summary

This document describes an industry-level stock strategy based on proximity to the 52-week high. Each month, it calculates each stock’s price-to-high ratio, then forms market-cap-weighted averages for 20 industries. It buys stocks in the six industries with the highest averages and shorts stocks in the six with the lowest. Positions are equally weighted, held for three months, and rebalanced monthly, with roughly one third of the portfolio refreshed each month.

The proposed explanation is investor anchoring: prices near a salient high may respond slowly to positive industry news. The cited study reports a monthly long-short return of 0.60% over 1963–2009 and says the industry strategy outperformed the individual-stock version by about 50%, even after controls for return momentum. The document warns against January implementation and notes that most long-short gains come from the long side. It does not establish crisis-hedging behavior, and related international evidence reports that transaction costs can eliminate significance in most markets.

Key ideas

• The strategy ranks industries by the market-cap-weighted proximity of constituent stocks to their 52-week highs.
• It buys stocks from the six highest-ranked industries and shorts those from the six lowest-ranked industries.
• Positions are equally weighted, held for three months, and refreshed monthly.
• The proposed mechanism is delayed investor response to industry news due to anchoring on recent highs.
• The cited sample finds positive returns after controlling for individual and industry momentum, but transaction costs and January performance are concerns.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.