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EAA (Elastic Asset Allocation) at a glance

EAA (Elastic Asset Allocation) is a tactical asset allocation (TAA) strategy by Keller & Butler across US Equity, International Equity, Emerging Markets, REITs, rebalanced monthly. Backtested 1982-03-31 to 2026-07-03 (44.3 years): 9.7% CAGR, 1.00 Sharpe, -17.2% max drawdown, 8.9% volatility.

Type
Tactical (TAA)
Author
Keller & Butler
Rebalancing
Monthly
Risk
Moderate
Period
1982-03-31 to 2026-07-03
CAGR
9.7%
Sharpe
1.00
Max Drawdown
-17.2%
Volatility
8.9%

EAA (Elastic Asset Allocation) Tactical Asset Allocation Strategy

Elastic Asset Allocation (EAA) was published by Wouter Keller and Adam Butler in 2014. It is a momentum strategy with an innovative 'elastic' cash mechanism that dynamically adjusts the portfolio's cash allocation based on how many assets in the universe have positive momentum.

The cash fraction is calculated as cf = 1 - n/N, where n is the number of assets with positive 12-month returns and N is the total universe size. When all 10 assets have positive momentum, cash is 0%; when only half do, cash is 50%; when none do, the portfolio is 100% in cash (BIL).

EAA (Elastic Asset Allocation): frequently asked questions

What is Elastic Asset Allocation?
Multi-factor scoring combining return, low correlation, and low volatility. Cash fraction scales elastically with the number of assets showing negative momentum. Selects top 3 assets by composite score. Monthly rebalancing.
Who created the EAA (Elastic Asset Allocation) strategy?
EAA (Elastic Asset Allocation) was developed by Keller & Butler. It is based on Keller, W.J. & Butler, A. (2014). Elastic Asset Allocation (EAA).
What is the historical return and maximum drawdown of EAA (Elastic Asset Allocation)?
Backtested from 1982-03-31 to 2026-07-03, EAA (Elastic Asset Allocation) returned 9.7% CAGR with a -17.2% maximum drawdown and a Sharpe ratio of 1.00. Past performance does not guarantee future results.
How often is EAA (Elastic Asset Allocation) rebalanced?
EAA (Elastic Asset Allocation) is rebalanced monthly. BestFolio publishes the updated allocation signal each period.
Is EAA (Elastic Asset Allocation) a tactical asset allocation strategy?
Yes. EAA (Elastic Asset Allocation) is a tactical asset allocation (TAA) strategy: it adjusts its holdings based on market signals each period rather than holding a fixed allocation.

Backtest Performance (1982-03-31 to 2026-07-03)

MetricEAA (Elastic Asset Allocation)
Compound Annual Growth Rate (CAGR)9.7%
Maximum Drawdown-17.2%
Sharpe Ratio1.00
Sortino Ratio1.38
Annualized Volatility8.9%
Calmar Ratio0.57
Total Return5925.6%
Backtest Period44.3 years

Strategy Details

Type
Tactical (TAA)
Rebalancing
monthly
Risk Level
moderate
Variants
2
Author
Keller & Butler
Source
Keller, W.J. & Butler, A. (2014). Elastic Asset Allocation (EAA)

Asset Classes

  • US Equity
  • International Equity
  • Emerging Markets
  • REITs
  • Commodities
  • Gold
  • Bonds
  • Corporate Bonds
  • High Yield Bonds
  • T-Bills

Further reading

New to this approach? Read what tactical asset allocation is and how it works.

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