The Echo Index
How much is the market rhyming bullish?
Every week we match the liquid stock and crypto universe against decades of chart history and count where the closest look-alikes went next. This is that count — precedent, not prediction.
Reading the archive…
What this number is
Chart Echo indexes hundreds of millions of historical chart windows. Each week we take the last 60 daily closes of every liquid stock and crypto chart in our universe, find each one’s closest historical look-alikes, and read what those precedents actually did next. The Echo Index is the share of charts whose precedents leaned bullish, bearish, or came back split.
What it is not
A forecast. Precedent is a base rate, not a promise — regimes change, and the next case can always be the exception. We publish the split and the disagreements precisely so this stays honest. Method and limitations are documented in Methodology & limits.
Citing the Echo Index? Link to this page — the reading updates here every week at the same URL.