Alpha Report
S&P 500 | April 2026

Market SectorEquity IndexModelPythia-v0.3.0
Date FromApr 01 2026Date ToApr 30 2026
Published May 6, 2026

1. Executive Summary

ES Macro Review for April 2026

During April 2026, the S&P 500 delivered a robust +9.46% return as markets rallied on dovish Federal Reserve signals indicating a potential shift toward monetary easing, while geopolitical tensions in Eastern Europe showed signs of de-escalation following diplomatic breakthroughs mid-month. The strategy underperformed significantly with a -0.82% return, likely caught off-guard by the sharp risk-on rotation that accelerated into month-end as institutional investors repositioned ahead of May earnings season. The benchmark's strong performance was further supported by better-than-expected corporate earnings and a late-month surge in technology stocks, creating a challenging environment for defensive positioning strategies.

Signal Performance Overview for April 2026

Trailing 12-month Sharpe 1.57 and return 6.17% (through the period in Table 3 below). During the report month, the S&P 500 benchmark rose approximately 9.46%; the strategy returned -0.82% over the same window. The current period demonstrates improved risk management with maximum drawdown compressing to -3.97% from the previous -4.37%, indicating better downside protection. However, the win rate declined modestly to 53.98% from 55.01%, suggesting slightly less consistent trade execution despite the enhanced drawdown control.

Signal Coverage — S&P 500

Asset ClassTrading SymbolName
FuturesESE-mini S&P 500
FuturesMESMicro E-mini S&P 500
ETFSPYSPDR S&P 500 ETF

2. Trading Strategy

In order to produce the metrics below we use the signal in combination with the trading strategy below:

  • Leverage: No leverage is applied for this strategy and metrics
  • Positions:
    • Entry positions: Every 5 minutes (between 09:45 and 15:30 ET) we decide to take a long, short or no position using 1/70 of our starting portfolio for the day (there are 70 possible openings per day). Each long/short position is then split into 5 parts and executed on each minute for the next 5 minutes following the decision. There is no sizing adjustment.
    • Exit positions: We exit all positions at the end of the day. The exits are split over five minutes (15:55–16:00 ET).
  • Costs: 1 bp round-turn assumption. Extra exchange/clearing fees not included.
  • Contract series & roll: Front-month continuous. Switch at the open T–5 trading days before expiration; stop trading the expiring contract and start trading the next.

For detailed examples, flowcharts, and a full walkthrough of the trading strategy, see Benchmark Trading Strategy.

3. Model Training Data and Timeframe

CategoryValue
Model FamilyPythia
Versionv0.3.0
ExchangeCME Globex
DataLevel II Limit Order Book (10 levels)
Retrained Time Period24Q3 to 25Q3
Final Validation Period25Q4

4. Performance Metrics

Table 1: Monthly Return and Win Rate Metrics (Last 12 Months)

MonthReturn (%)Win Rate (%)
2026 YTD0.53952.548
2026 Apr-1.00240.946
2026 Mar-0.37950.875
2026 Feb-0.54847.124
2026 Jan2.51370.539
2025 Dec0.58056.876
2025 Nov0.26147.283
2025 Oct0.70252.089
2025 Sep1.52762.937
2025 Aug1.29860.865
2025 Jul0.89455.729
2025 Jun-0.81944.653
2025 May0.95656.172

Table 2: Year over Year Performance Comparison

MonthReturn (%)Win Rate (%)
Apr 2026-1.00240.946
Apr 20254.94452.973
Apr 2024-1.33350.500

Table 3: 12-Months Ending Performance

Metric12 months ending Apr 202612 months ending Mar 2026Change
Sharpe1.5651.386+0.179
Ann Return (%)6.16612.411-6.245
Win Rate (%)53.97955.006-1.027
Max DD (%)-3.972-4.374+0.401
Volatility4.1198.615-4.497
Calmar1.6232.731-1.108

Figure 1: Cumulative equity curve showing the trading strategy net long/short performance compared with the ES price (100 = Apr 01, 2026)

5. Next Steps

Download historical predictions for this month using the Client API and confirm performance in your own test harness.

6. Contact

Please reach out with any questions or comments at: info[at]quantumsignals.ai