See how delta behaves across in-the-money, at-the-money and out-of-the-money options and as expiration approaches.
At the money
ATM calls are often near +0.50 and ATM puts near -0.50, though rates, dividends and contract details can shift the values. Uncertainty around the strike also tends to create meaningful gamma.
In the money
As a call moves deeper ITM, delta generally approaches +1. A deep ITM put can approach -1. These options respond more like the underlying because intrinsic value dominates their premium.
Out of the money
Far OTM deltas approach zero as the modeled chance of finishing with intrinsic value declines. A small delta does not prevent a large percentage gain or total premium loss.
A practical example
With a stock at $100, a $90 call may have high delta, the $100 call may sit near 0.50 and a $115 call may have low delta. One price jump can move all three values and their deltas.
This simplified example holds other inputs constant to isolate directional exposure. Live option prices also reflect the underlying price, time decay, rates, dividends, liquidity and transaction costs. Greeks are theoretical estimates, not guarantees.
Frequently asked questions
Which option has the highest delta?
A deep ITM call is closest to +1, while a deep ITM put is closest to -1.
Why is ATM delta near 0.50?
The strike is near the boundary between expiring in and out of the money under common assumptions.
Does delta become 0 or 1 at expiration?
For calls it converges toward 0 or 1 depending on moneyness; puts converge toward 0 or -1.
Continue the Delta Effect cluster
Explore related guides: How to Calculate Option Delta Exposure · Delta vs Gamma in Options · How to Read Delta in an Option Chain. For a structured sequence, use the free Level 6 – Delta Effect course.
Options involve risk and are not suitable for every investor. This material is educational and is not investment, tax or legal advice. Greeks are theoretical estimates, and contract terms and broker requirements can vary.