Jumbo pools
Ginnie Mae II pass-through mortgage securities collateralized by pools which are generally larger and contain mortgages that are often more geographically diverse than single-issuer pools. Mortgage loans in jumbo pools may vary in terms of the interest rate within one percentage point.
Jump Z-Tranche
A Z-tranche that may start receiving principal payments before prior tranches are retired if market forces create a "triggering" event, such as a drop in Treasury yields to a defined level, or a prepayment experience that differs from assumptions by a specific margin. "Sticky" jump Z-tranches maintain their changed payment priority until they are retired. "Non-sticky" jump Z-tranches maintain their priority only temporarily for as long as the triggering event is present. Although jump Z-tranches are no longer issued, some still trade in the secondary market.
Junior security
A security with a claim on a corporation's assets and income that is subordinate to that of a senior security. For example, common stock is junior to preferred stock, which is junior to unsecured debt such as debentures, which is junior to secured debt.
A debt obligation with a rating of Ba or BB or lower, generally paying interest above the return on more highly rated bonds; sometimes known as high-yield bonds.