Vigilant Asset Allocation: The VAA Breadth Signal Explained
Most tactical allocation strategies detect danger by watching a handful of sentinel assets — a canary in the coal mine approach. Vigilant Asset Allocation, published by Wouter Keller and Jan Willem Keuning in 2017 (SSRN #3002624), takes a fundamentally different path. Instead of relying on a few canaries, VAA monitors the momentum of every asset in its universe and uses the count of weak assets as its crash detection signal. The more widespread the weakness, the more aggressively the portfolio shifts to defense.
The result is a strategy with extreme outcomes. During the Global Financial Crisis of 2008, VAA-G12 returned +23.32% while equity markets collapsed. During COVID in early 2020, it returned +4.85% through the crash. But in 2022, when bonds and equities fell together under aggressive Fed rate hikes, the strategy posted -14.56% — its worst year on record. Understanding why VAA excels in some crises and fails in others requires understanding its core mechanism: the breadth signal.
The 13612W Momentum Formula
VAA scores every asset using a weighted composite momentum formula known as 13612W:
13612W = 12 × (1-month return) + 4 × (3-month return) + 2 × (6-month return) + 1 × (12-month return)
The weighting scheme is deliberate. Recent returns receive far more influence — the 1-month return carries a coefficient of 12, while the 12-month return carries just 1. This makes the formula responsive to sudden shifts in momentum, which is exactly what a crash detection system needs. A strategy designed to protect capital during rapid drawdowns cannot afford to wait for a 12-month moving average to roll over.
At the same time, the longer lookback periods provide confirmation. A single bad month does not overwhelm the score if 3-month, 6-month, and 12-month trends remain positive. This balance between speed and stability is what separates the 13612W formula from simpler momentum measures that rely on a single lookback window.
The formula produces a single score for each asset every month. When that score is positive, the asset has favorable momentum. When it turns negative, the asset is signaling weakness. The count of negative scores across the full universe becomes the breadth signal — and the breadth signal drives every allocation decision.
The Breadth Signal: How It Works
The breadth signal is VAA's core innovation and the feature that distinguishes it from canary-based strategies. Rather than delegating crash detection to a separate set of sentinel assets, VAA treats all 12 assets in its offensive universe as both investment candidates and signal sources.
The mechanism is graduated. Each month, VAA counts how many of the 12 assets have negative 13612W scores. That count directly determines how many portfolio slots shift from offensive to defensive holdings:
- 0 assets negative — the portfolio is fully invested in the top-ranked offensive assets, equally weighted
- 1 asset negative — 1 slot shifts to the best defensive asset by momentum
- 2 assets negative — 2 slots shift defensive
- 3 assets negative — 3 slots shift defensive
- All 12 negative — the portfolio is fully defensive
Consider a concrete example. In a healthy market environment, all 12 assets — spanning equities, bonds, commodities, and real estate — carry positive 13612W scores. The portfolio allocates equally to the top-ranked assets. Then deterioration begins. Emerging markets turn negative. Then commodities. Then real estate. Each time an asset's score crosses below zero, one more portfolio slot moves to defense. The portfolio does not wait for a binary "risk-on or risk-off" decision. It ramps protection proportionally to the breadth of weakness.
This graduated response is the key structural advantage over binary strategies. A binary system is either fully invested or fully defensive — creating whipsaw risk at the threshold. VAA's ramp smooths transitions and reduces the cost of false signals. If only 1 of 12 assets turns negative, the portfolio shifts just one slot rather than dumping everything into bonds.
Why Breadth Matters More Than Individual Signals
A single asset can turn negative for idiosyncratic reasons — an oil shock affects GSG, a regulatory change hits IYR. These are not systemic risks. But when 5, 6, or 7 assets across different sectors and geographies simultaneously show negative momentum, that is a broad-based deterioration that demands a defensive response. The breadth reading captures the difference between isolated weakness and systemic risk in a way that single-asset canary signals cannot.
The 12-Asset Universe
VAA-G12's offensive universe spans five distinct economic dimensions:
- US Equities: SPY (large cap), QQQ (technology), IWM (small cap)
- International Equities: VGK (Europe), EWJ (Japan), EEM (emerging markets)
- Real Assets: IYR (real estate), GSG (broad commodities), GLD (gold)
- Fixed Income: HYG (high yield bonds), LQD (investment grade corporate), TLT (long-term treasuries)
This diversity is not accidental — it is essential to the breadth signal's effectiveness. When weakness appears only in equities, the breadth count might reach 3 or 4 (SPY, QQQ, IWM, and perhaps EEM), triggering partial defense. When weakness spreads to commodities, real estate, and high yield bonds, the count rises to 7 or 8, triggering heavy defense. The universe is designed so that breadth correlates with the severity and systemic nature of the threat.
The defensive universe consists of three bond instruments: SHY (short-term treasuries), IEF (intermediate-term treasuries), and LQD (investment grade corporates). Each month, the best performer by 13612W momentum receives the defensive allocation. This creates a structural dependency: VAA's protection is only as good as the best-performing bond in any given environment.
Performance Analysis
| Metric | VAA-G12 |
|---|---|
| CAGR | 8.70% |
| Sharpe Ratio | 0.90 |
| Sortino Ratio | 1.27 |
| Calmar Ratio | 0.33 |
| Volatility | 9.81% |
| Max Drawdown | -26.74% |
| Max DD Duration | 50 months |
| Win Rate | 63.3% |
| Best Month | +9.07% |
| Worst Month | -10.15% |
| Time Defensive | ~35% |
The 8.70% CAGR with 9.81% volatility produces a respectable 0.90 Sharpe ratio. The Sortino ratio of 1.27 — which penalizes only downside volatility — is notably higher, reflecting VAA's asymmetric return profile: it captures upside during calm markets and limits downside during traditional crises. The 63.3% win rate confirms that roughly two-thirds of months produce positive returns.
The max drawdown of -26.74% with a 50-month recovery period tells a different story. This drawdown occurred during the 2021-2023 period and reveals the strategy's structural vulnerability, which the crisis analysis below examines in detail.
Crisis Performance Deep Dive
| Crisis | Period | VAA-G12 Return |
|---|---|---|
| Global Financial Crisis | 2008 (full year) | +23.32% |
| GFC Peak-to-Trough | Nov 2007 – Feb 2009 | +14.80% |
| COVID Crash | Feb – Mar 2020 | +4.85% |
| Rate Shock | 2022 (full year) | -14.56% |
| Tariff Shock | 2025 | +6.00% |
The pattern is clear. In 2008, the breadth signal fired early as asset after asset turned negative. The portfolio shifted heavily into treasuries — which rallied as the Fed cut rates and investors fled to safety. The combination of early detection and effective defensive assets produced a +23.32% return while the S&P 500 lost over 36%. During the full GFC peak-to-trough period from November 2007 through February 2009, VAA-G12 delivered +14.80%.
COVID in 2020 was a speed test. The crash was the fastest in market history — the S&P 500 dropped 34% in 23 trading days. VAA's breadth signal had already shifted portions of the portfolio defensive before the worst of the selling, and the strategy navigated the crash with a +4.85% return. The full year posted +27.23%, VAA's best calendar year on record, as the recovery rally rewarded the strategy's return to offensive positioning.
The 2025 tariff shock produced +6.00%, confirming that VAA's breadth mechanism continues to function in contemporary market environments. When broad uncertainty hits multiple asset classes simultaneously, the breadth count rises, and the portfolio protects.
The 2022 Problem: When Defense Fails
The 2022 rate shock exposed VAA's structural weakness with brutal clarity. The Federal Reserve raised interest rates at the most aggressive pace in decades, causing bonds and equities to fall in tandem. The strategy's breadth signal worked exactly as designed — it detected widespread weakness and shifted the portfolio heavily defensive. The problem was not the signal. The problem was what "defensive" meant.
VAA's defensive universe — SHY, IEF, and LQD — consists entirely of bond instruments. In 2022, IEF lost over 15%, LQD lost over 17%, and even SHY, the shortest-duration option, lost ground. The breadth signal correctly identified danger and moved the portfolio to safety. But the "safe" assets were themselves losing money. The result was a -14.56% annual return and the beginning of a drawdown that took 50 months to recover from.
This is not a flaw in the breadth signal — it is a flaw in the defensive universe. VAA was designed in an era when bond-equity correlation was reliably negative: when stocks fell, bonds rallied. The 2022 regime broke that assumption. Any strategy whose defensive mechanism relies entirely on bonds carries this same vulnerability. Past performance does not guarantee future results, and the correlation regime that made VAA's GFC performance possible is not permanent.
The 5-year return of just +6.38% reflects the lasting impact of this failure. The strategy spent much of 2021-2023 either losing money in defensive positions or whipsawing between offense and defense as markets oscillated.
Annual Returns: The Full Picture
| Year | Return | Year | Return |
|---|---|---|---|
| 2008 | +23.32% | 2017 | +15.41% |
| 2009 | +8.11% | 2018 | +8.26% |
| 2010 | +18.76% | 2019 | +4.27% |
| 2011 | +10.87% | 2020 | +27.23% |
| 2012 | +19.10% | 2021 | +2.36% |
| 2013 | +3.95% | 2022 | -14.56% |
| 2014 | +5.44% | 2023 | +5.82% |
| 2015 | +0.51% | 2024 | +3.53% |
| 2016 | +3.36% | 2025 | +25.06% |
The annual return series reveals two distinct eras. From 2008 through 2020, VAA-G12 posted positive returns every single year — 13 consecutive winning years with only 2015 (+0.51%) coming close to breakeven. The strategy compounded steadily, delivering double-digit returns in six of those years.
Then came 2021-2024: four years of weak performance averaging roughly +1% annually. The -14.56% in 2022 was the headline loss, but the broader problem was the extended period of low returns on either side. The 2025 rebound to +25.06% suggests the strategy can still deliver when conditions align, but the 2021-2024 stretch is a reminder that even well-designed tactical strategies experience prolonged difficult periods.
VAA vs Canary Strategies
Keller and Keuning later developed canary-based strategies like HAA and BAA, which use a small set of dedicated sentinel assets — typically VWO and BND — to determine the risk regime. The canary approach has a structural advantage in speed: monitoring 2 assets is faster than waiting for breadth to build across 12. A canary strategy can go fully defensive the moment its 2 sentinels turn negative.
VAA's breadth approach has a different advantage: robustness. A single canary asset can generate a false signal due to idiosyncratic factors. When VAA requires 6 or 8 of 12 assets to turn negative before reaching heavy defense, it filters out noise that might trigger a canary strategy prematurely. The tradeoff is that VAA's graduated response means it reaches full defense more slowly — which is acceptable in slow-moving crises like 2008 but could be costly in flash crashes.
The choice between breadth and canary approaches depends on whether the investor prioritizes risk-adjusted return smoothness (breadth, graduated) or speed of response (canary, binary). Neither is categorically superior — they represent different philosophies for the same problem.
How to Explore VAA-G12 on PortfolioWiser
VAA-G12 is available for full interactive exploration on the platform. In the Strategy Library, investors can review VAA-G12's complete performance history, current allocation, monthly heatmap, and trade ledger. The library page shows the strategy's live signals, including how many of the 12 assets currently have negative momentum and which defensive asset is currently selected.
In Scenarios, investors can compare VAA-G12 against other breadth and canary strategies side by side — examining how the breadth approach stacks up against binary canary systems across different market regimes. VAA-G12 can also be explored as a component within multi-strategy blended portfolios, where its crisis protection characteristics complement strategies with different risk profiles.
Conclusion
Vigilant Asset Allocation represents a genuinely innovative approach to tactical crash detection. The breadth signal — counting negative-momentum assets across a diversified 12-asset universe — is a more robust alternative to single-asset canary systems. The graduated response mechanism reduces whipsaw and scales protection proportionally to the severity of market weakness.
The track record reflects both the strengths and the limitations of this design. An 8.70% CAGR with a 0.90 Sharpe ratio and a 63.3% win rate are solid foundations. The crisis performance in 2008 (+23.32%), 2020 (+4.85%), and 2025 (+6.00%) demonstrates that the breadth signal detects danger effectively in traditional market crises. But the -14.56% in 2022 and the 50-month drawdown recovery are equally important data points. VAA's protection depends entirely on its bond-based defensive universe, and when bonds fail to provide shelter, the strategy fails with them.
For investors evaluating VAA-G12, the central question is not whether the breadth signal works — it does. The question is whether the defensive universe is adequate for the correlation regime ahead. The strategy's best years came when bonds and equities moved in opposite directions. Its worst year came when they moved together. That distinction matters more than any backtest metric.