01 · Full Period Overview (2019.01 – 2026.05)
Total Return
+212.16%
SPY: +227.04%
Nearly identical
CAGR
16.81%
SPY: 17.56%
Alpha: −0.75%/yr
Max Drawdown
−23.58%
SPY: −33.72%
30% smaller
Sharpe Ratio
0.937
SPY: 0.824
+0.113
Calmar Ratio
0.713
SPY: 0.521
+0.192
02 · Performance Analysis
📈 Why S&P 500 Leads in Raw Return
The 2019–2026 period was dominated by mega-cap tech concentration. By 2024, the top 10 S&P 500 holdings represented over 35% of the index — Nvidia alone rose 200%+ in both 2023 and 2024.
SPY's market-cap weighting automatically captures this concentration in full. The rotation research, diversifying across a broad ETF universe with explicit regime-based risk control, intentionally reduces mega-cap exposure — most visible in 2021 (SPY +30.51% vs model +22.01%) and 2024 (SPY +25.59% vs model +5.16%).
This is the model's design: accept a moderate return lag to achieve substantially lower drawdown. The same mega-cap concentration that drove 2024 returns caused the S&P 500 to fall 34% in 2022. The rotation research lost only 17.78% that year.
🛡️ The Risk-Control Trade-Off
Giving up 0.75% annual return, the model achieves dramatic improvements in every risk metric — the strongest case for systematic risk management.
Annual return given up−0.75%/yr
Max drawdown reduced−10.14 pp (30%)
Sharpe ratio improved+0.113
Calmar ratio improved+0.192
2020 COVID crash: model −21.80% vs SPY −33.72% — 11.9 pp protected at the worst moment.
2022 bear market: model −17.78% vs SPY −18.65% — defensive cash in T-bills turned the tide.
03 · Annual Breakdown (Model vs S&P 500)
| Year |
Ann. Return | Max DD |
Sharpe | Calmar |
Annual Alpha | Benchmark |
| 2019Model |
+27.29 | -7.95 | +2.076 | +3.43 | -3.80% | |
| +31.09 | -6.62 | +2.072 | +4.70 | |
S&P 500 |
| 2020Model |
+30.60 | -21.80 | +1.256 | +1.40 | +13.36% | |
| +17.24 | -33.72 | +0.584 | +0.51 | |
S&P 500 |
| 2021Model |
+22.01 | -5.45 | +1.302 | +4.04 | -8.50% | |
| +30.51 | -5.11 | +1.978 | +5.96 | |
S&P 500 |
| 2022Model |
-17.78 | -23.58 | -1.135 | -0.76 | +0.87% | |
| -18.65 | -24.50 | -0.818 | -0.76 | |
S&P 500 |
| 2023Model |
+21.97 | -11.30 | +1.364 | +1.96 | -4.74% | |
| +26.71 | -9.97 | +1.743 | +2.70 | |
S&P 500 |
| 2024Model |
+5.16 | -12.40 | +0.282 | +0.42 | -20.43% | |
| +25.59 | -8.41 | +1.723 | +3.04 | |
S&P 500 |
| 2025Model |
+21.73 | -9.82 | +1.287 | +2.23 | +3.72% | |
| +18.01 | -18.76 | +0.852 | +0.97 | |
S&P 500 |
| 2026 YTDModel |
+17.99 | -7.53 | +3.029 | +8.28 | +10.28% | |
| +7.71 | -8.88 | +1.485 | +2.74 | |
S&P 500 |
| Full PeriodModel |
+212.16% CAGR 16.81% |
-23.58% | 0.937 | 0.713 |
-0.75%/yr | |
+227.04% CAGR 17.56% |
-33.72% | 0.824 | 0.521 |
| S&P 500 |
ℹ 2024 underperformance note: 2024 was an extraordinary mega-cap concentration year. Nvidia's weighting in SPY exceeded most sector ETFs. The model's diversification was a material headwind (−20.43% alpha). The same structure, however, limited 2025 drawdown to −9.82% while SPY fell −18.76% — a 8.9 pp gap that illustrates the model's primary purpose: drawdown control over maximum return capture.
04 · NAV Curve · Drawdown · Annual Return Bars
Hypothetical backtest · Log scale · 0.15% cost/trade · Weekly rebalance · Not investment advice
⚠ All results are hypothetical backtests. Past performance does not guarantee future results. 0.15% cost/trade included. Excludes taxes, slippage, market impact.
Alpha Rotation Lab · Research publication only · Not investment advice