A version of a stripped mortgage-backed security which has cash flows that are based entirely on the monthly principal payments received from a mortgage pool.  Investors tend to buy principal-only strips when they suspect that interest rates are about to decline, because the principal will be paid at a faster rate.
Related information about principal-only strip:
- What is principal-only strip? definition and meaning
 Definition of principal-only strip: A version of a stripped mortgage-backed security   which has cash flows that are based entirely on the monthly principal ...
 
- Stripped Giant Certificates (Strips) - Freddie Mac
 inverse floater pairs may be produced. Product Overview: Stripped Giant   Certificates (Strips). Interest-only Strip. Principal-only Strip. Principal-only Strip.   Floater ...
 
- FASB Simplifies Accounting for Hybrid Financial Instruments - Deloitte
 Amendments to Interest-Only and Principal-Only Strip Exemption From Statement   133. Statement 155 tightens up the language regarding interest-only (IO) and ...
 
- stripped mortgage-backed securities Definition | Business ...
 ... the mortgage-backed security is converted into an interest-only strip, where the   investor receives 100% of the interest cash flow, and a principal- only strip, ...
 
- The Role of Stripped Securities In Portfolio Management
 interest-only strips, each representing a $400 interest payment and one principal-  only strip representing payment of $10,000 principal. The properties of stripped ...
 
- Class 2 CMOs
 Principal Only Strip. Inputs: cash flows from a pass through security. Cash Flow   Rules: no interest payments are made to this bond. The bond receives no interest ...
 
- Issue B40 - FASB FAS 133 Derivatives Implementation
 An interest-only strip and principal-only strip are created by separating the net   interest cash flows from the principal cash flows received on a pool of guaranteed ...
 
- Chapter Twenty Eight - NYU Stern School of Business
 The holder of a principal-only strip is entitled to the portion of the mortgage   payments that reflects the payment of principal. As interest rates decrease, the ...