Glossary · Call wall and put wall

What are the call wall and put wall?

The call wall and put wall are the strikes with the largest modeled call and put gamma, often read as levels where dealer hedging concentrates.

How reliable are call and put walls intraday?

They are modeled from options open interest, which is reported end of day, so intraday they are an estimate.

The data sources page says how every number is made, with its limits. Markov provides research tools and education, not financial advice.