Combining Independent Smart Beta Strategies for Portfolio Optimization

—

Combining Independent Smart Beta Strategies for Portfolio Optimization

Phil Maguire
Karl Moffett
Rebecca Maguire
Published on 8/7/2018
Equities
Stocks
Smart beta
Factor investing
Long short equity
Momentum
Volatility effect
Backtesting

This research paper explores the combination of independent smart beta strategies for enhanced portfolio optimization. The authors introduce an innovative approach that applies smart beta principles in reverse to create a 'bad beta' portfolio that can be shorted, enabling the construction of beta-neutral strategies. They combine two distinct smart beta approaches: a long-short beta-neutral strategy using adaptive boosting classification on momentum indicators, and a minimized volatility portfolio that capitalizes on the low-volatility anomaly where low-volatility stocks historically deliver superior risk-adjusted returns.

The methodology involves monthly rebalancing of these two independent strategies, with the combined approach demonstrating significant performance improvements over individual components. The research shows that while the market neutral component achieved a Sharpe Ratio of 0.61 and the low volatility strategy achieved 0.90 (both exceeding the market benchmark of 0.42), the combined leveraged strategy achieved an even higher Sharpe Ratio of 0.96 in backtesting. Most notably, during six months of live trading, the combined strategy achieved a Sharpe Ratio of 1.35, validating the practical effectiveness of the approach. This work contributes to factor investing literature by demonstrating that strategic combination of independent smart beta approaches can yield superior risk-adjusted returns compared to individual strategies in isolation.

Highlights

  • 1Introduces a 'bad beta' portfolio concept for shorting to create beta-neutral returns
  • 2Combines two independent smart beta strategies: long-short beta-neutral momentum and minimized volatility
  • 3Demonstrates superior performance through combination rather than individual strategies
  • 4Validates approach with both backtesting and six months of live trading results

Methods

  • M
    Adaptive boosting classifier applied to momentum indicators for long-short beta-neutral strategy
  • M
    Minimized volatility portfolio construction targeting low-volatility stocks
  • M
    Monthly rebalancing of combined portfolio with leverage optimization

Results

  • R
    Market neutral component achieved Sharpe Ratio of 0.61 vs benchmark 0.42
  • R
    Low volatility strategy achieved Sharpe Ratio of 0.90
  • R
    Combined leveraged strategy achieved backtest Sharpe Ratio of 0.96 and live trading Sharpe Ratio of 1.35
0/5

Analyze Paper

Generate insights from "Combining Independent Smart Beta Strategies for Portfolio Op...".

Suggested Actions