futures-delta

Hi @David Harper CFA FRM @Nicole Seaman , I am reading Hull- Chapter 19 Assigned Reading. May I ask why Forward delta is 1 but futures delta is not 1? Since from my understanding, both can be priced using F_0=S_0*e^rT, differentiating with respect to S_0 should get e^rT? Thank you!

Dear David, I don't understand why delta of forward for non-dividend stock could be 1 when the forward price equals to (So)exp(rT), meaning every unit change in So should be multiplied by exp(rT) to really affect the forward price. As to futures contract, I think...