Yield futures are cash settled, priced in yield and therefore are linked to a particular on-the-run security. Micro Treasury futures are hard cash settled, 1/10 size versions of the extant Treasury futures, and so are traded on price, track a basket of deliverable securities, and settle to the costs in https://kylerljjhg.topbloghub.com/40271982/safe-haven-asset-firms-options