AI Backtest

Backtest: Buy CVX at the close when Brent crude closes up at least 1% on the day while...

-5.15%
Return on capital

A 59.2% win rate attached to a losing strategy — that is the tension running through this backtest. The setup is intuitive enough: when Brent closes up at least 1% and Chevron finishes lower anyway, the drop looks stock-specific rather than oil-beta weakness, and the stock should snap back as that gap closes.

Across 49 closed trades, it didn't pay. The strategy returned -5.15% on $100,000 in starting capital, with the worst single trade at -13.38% swamping a best of +4.18%. Over the same window, SPY buy-and-hold returned +85.28%, leaving the rules trailing the benchmark by 90.42 points.

The full trade-by-trade evidence, and what it says about divergence setups like this one, is in the analysis below.

The strategy

Buy CVX at the close when Brent crude closes up at least 1% on the day while CVX closes down on the day; exit when CVX closes above its 5-day simple moving average or after 5 trading days, whichever comes first. A Chevron down day against a strong crude rally marks stock-specific forced selling rather than oil-beta weakness, so the stock tends to snap back as the divergence closes.

How this was measured

This is a simulated backtest generated from the plain-English strategy below, executed bar-by-bar on historical market data using the price + news data mode with $100,000 starting capital. Strategy: Buy CVX at the close when Brent crude closes up at least 1% on the day while CVX closes down on the day; exit when CVX closes above its 5-day simple moving average or after 5 trading days, whichever comes first. A Chevron down day against a strong crude rally marks stock-specific forced selling rather than oil-beta weakness, so the stock tends to snap back as the divergence closes.

The key numbers

Return on capital
-5.15%
total P&L over starting capital
Total P&L
$-5,145.71
Closed trades
49
Win rate
59.2%
share of closed trades in profit
vs SPY
-90.42%
excess return over SPY buy-and-hold

The charts

Equity curve (growth of 100)

The takeaway

The strategy returned -5.15% on $100,000 starting capital across 49 closed trades with a 59% win rate. Over the same window SPY buy-and-hold returned +85.28%, so the strategy finished trailing the benchmark by 90.42 points. Best single trade +4.18%, worst -13.38%.

The fine print