Trend Detection

Cross-Asset Range Ratio Calculator

Paste the daily ranges for two related instruments (e.g. SPY vs QQQ), one value per line, in the same chronological order, to get the ratio for each period, the historical average, and whether today's ratio has diverged meaningfully from that average.

Asset A ranges, oldest first (one per line)

Asset B ranges, oldest first (one per line)

Periods used···

Average ratio (A / B)···

Most recent ratio···

Divergence (z-score)···

Read···

Educational tool only, not financial advice. Requires the same number of matched periods for both assets. Check it against your own plan and risk rules before you trade it.

Built by Jason Parker, founder of Trading Ranges.