Yes. In California, a judgment currently earns 10% simple (non-compounded) interest per year. Other states can have different interest rates. Texas, Kentucky, and Colorado have annually-compounded interest rates. Otherwise, interest rates are only compounded each time the judgment is renewed. After outsourcing your judgment on a contingency future-payment basis; upon a successful recovery of your judgment, you get an average of 50% of what is recovered, often including interest. (Cash upfront sales of judgments are always at sharp discounts.)
To check the interest earned on a judgment, click here.
Of course, interest earned is theoretical – until if and when a judgment is eventually sold or enforced.