Just as an option’s market value has sensitivities to underlier price, vol, time to expiration… collectively known as the greeks, a fixed-income portfolio valuation has a much-watched sensitivity to yield, known as Modified-Duration.
Interestingly, The most complex part of bond duration is … option adjusted spread for bonds with embedded options!
A 2nd common type of bond-with-options are caps/floors. Is any Greek widely used for these? Yes since these instruments are mathematically equivalent to calls/puts on an underlying bond.
I feel caps/floors are less popular than swaption, whose market is quite large.