Defensive Asset Allocation — Single Asset (DAA1-U1)
Developed by Keller & Keuning · Canary Universe · High Risk
Defensive Asset Allocation — Single Asset is a concentrated variant of Keller and Keuning's canary-based framework, published as part of their broader DAA research (SSRN #3002624). DAA1-U1 reduces the offensive universe to a single asset — US equities (SPY) — while retaining the full canary protection mechanism and adaptive defensive selection. This minimalist approach strips the strategy to its most essential elements: a binary decision between holding the S&P 500 when macro conditions are favorable and rotating to the best-performing safe-haven asset when they are not.
The canary universe operates identically to the standard DAA: emerging markets (VWO) and aggregate bonds (BND) are scored monthly using the 13612W weighted momentum composite. The graduated response — zero, fifty, or one hundred percent defensive based on how many canaries are negative — determines the proportion of the portfolio allocated to defense versus offense. The only simplification relative to standard DAA is the offensive side: instead of ranking multiple assets to find the best risk-on position, DAA1-U1 defaults to SPY whenever the portfolio is in risk-on mode.
This simplification eliminates the momentum-ranking component of standard DAA's offensive allocation. The strategy makes no judgment about which risk asset to hold — it always holds SPY when conditions are favorable. The value proposition comes entirely from the canary-based timing: entering US equities during favorable macro regimes and exiting to safe havens during unfavorable ones. Any alpha the strategy generates relative to buy-and-hold SPY comes from the defensive rotations, not from asset selection during risk-on periods.
The defensive selection uses a three-asset safe-haven universe — short-duration government bonds (SHV), intermediate Treasuries (IEF), and ultra-short Treasuries (UST) — chosen by their 13612W momentum scores. This all-government, short-to-intermediate duration defensive menu provides conservative capital preservation without the duration risk of long-term bonds, making the defensive periods less volatile than strategies that use TLT as their primary defensive instrument.
How It Works
Canary-Based Regime Detection
Each month, VWO and BND are scored using the 13612W weighted momentum composite. The canary assessment determines the portfolio's defensive posture: both canaries positive means the portfolio is fully in SPY; one canary negative shifts fifty percent to defense; both canaries negative shifts one hundred percent to defense. This graduated response provides proportional protection based on the severity of the warning signal.
The canary universe was specifically selected for its leading properties — emerging markets and aggregate bonds tend to weaken before US large-cap equities during periods of deteriorating macro conditions. This lead-lag relationship gives the strategy time to reduce equity exposure before the bulk of a US equity decline occurs, potentially avoiding a significant portion of bear market drawdowns while maintaining full equity participation during confirmed favorable regimes.
Single-Asset Offense
During risk-on periods, the portfolio holds US equities (SPY) as its sole offensive position. There is no multi-asset ranking, no momentum scoring of offensive alternatives, and no relative strength comparison. The strategy's entire risk-on allocation goes to the S&P 500 index, providing broad US equity market exposure that closely tracks the most widely followed benchmark in global investing.
This simplification has a specific advantage: it eliminates the ranking noise that can cause standard DAA to select suboptimal offensive assets. When the offensive universe includes emerging markets, international stocks, and bonds alongside US equities, the momentum ranking can select an alternative that subsequently underperforms SPY. By defaulting to SPY, DAA1-U1 ensures the investor captures the US equity market return during every favorable period, without the risk of momentum-driven misallocation within the offensive universe.
Conservative Defensive Selection
During defensive periods, the portfolio selects from a three-asset safe-haven universe: short-duration government bonds (SHV), intermediate Treasuries (IEF), and ultra-short Treasuries (UST). These three instruments span the short-to-intermediate duration spectrum of the government bond market, providing conservative capital preservation without the volatility associated with long-duration bonds.
The defensive selection uses the same 13612W momentum scoring as the canary assessment, directing capital to whichever safe-haven instrument shows the strongest recent trend. During rate-cutting environments, IEF's intermediate duration produces capital gains and is typically selected. During rate-hiking environments, SHV and UST's minimal duration preserves capital and leads the ranking. This adaptive selection ensures the defensive allocation matches the prevailing interest rate environment without requiring the investor to predict the direction of rates.
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