What is a good PCR value?
There is no single good value — put-call ratio is read relative to its own recent range, not against a fixed number. A PCR near 1 suggests balanced call and put open interest. Readings well above the recent range are usually treated as put-heavy positioning, and readings well below as call-heavy. Direction of change matters more than the level.
What is an OI crossover and why does it matter?
An OI crossover is the point where total put open interest moves above total call open interest, or falls back below it, flipping which side of the book is heavier. It is the same event as the ratio passing 1.00, which is why it is marked on the PCR line itself. It matters because it marks a change in where the crowd is positioned rather than a change in price. Crossovers around key levels often coincide with a shift in intraday character.
How reliable is a crossover as a signal?
On its own it is context, not a signal. Crossovers are most informative when they line up with something else — price reclaiming a level, a build at a nearby strike, or a shift in max pain. A crossover that happens on thin open interest, or one that reverses within minutes, usually reflects noise in the totals rather than a genuine change in positioning.
Should PCR be read on total open interest or on change in open interest?
Both, and they answer different questions. PCR on total open interest describes the standing book, which moves slowly and reflects accumulated positioning. PCR on change in open interest describes what is being added today and reacts far faster. Intraday reads lean on the change-based ratio; positional reads lean on the total.
What is the difference between open interest and volume?
Volume counts every contract traded during the session and resets to zero the next day, while open interest counts contracts still outstanding and carries forward until they are closed or expire. High volume with rising open interest points to fresh positioning; high volume with falling open interest points to existing positions being unwound.
Can PCR be used on its own to take a trade?
No. PCR is a positioning statistic, not a signal — it describes how the option book is arranged, not where price is going. It is most useful as context alongside price structure and the open-interest distribution across strikes. Extreme readings tend to mark crowded positioning, and crowded positioning can persist far longer than expected.
