What is Net Delta? Net Delta is the Total Call Delta - Total Put Delta Why does Net Delta matter? A positive delta position infers options market makers have a net long hedge. A negative delta position implies dealers have a net short hedge. How to use Net Delta When a large net delta position expires, options market makers may have large hedges to unwind. This can cause a reversal in the stock. Interested in learning more? Related articles What is Key Gamma Strike? What is 25D Risk Reversal? What is Key Delta Strike? What is Delta Neutral Price? What is Gamma, Market Gamma and/or Total Market Gamma?