How Are Mortgage Securities Created?

TL;DR

Mortgage securities are created by pooling typically at least 100 mortgage loans, documenting the pool, assigning a QIP number, and auctioning the security to dealers or underwriters. Pooling aims to keep coupon rates and remaining maturities close, while offering circulars explain general risks and pool supplements provide quantitative details. Read on to understand how these securities reach investors and continue trading.

Transcript

continuing our tour of the business processes in mortgage lending I want to talk a little bit about security creation it's a huge process even if I knew all of it it would take forever to describe describe it all I don't know as much about it as I do about other business processes and mortgage lending and on top of that there really is a lot of leg... Read More

Key Insights

• Mortgage security creation is a complex process involving legal and technical aspects, requiring careful consideration of various factors.
• Pooling involves combining numerous mortgage loans, ensuring similar coupon rates and maturities to create uniform mortgage-backed securities.
• Freddie Mac and Fannie Mae are key players in mortgage securities, offering pass-through certificates and mortgage-backed securities respectively.
• Offering circulars provide general information and risk disclosures, while pool supplements offer detailed data about specific mortgage pools.
• Key identifiers like the QIP number help track and trade mortgage securities, facilitating transparency in the market.
• Adjustable-rate mortgages require additional disclosures about adjustment dates and other specific characteristics.
• Mortgage securities are auctioned to dealers and underwriters, who then sell them to various investors, including foreign entities and pension funds.
• Securities can be divided into tranches, allowing different investors to own parts of a security, adding complexity to the trading process.

Questions & Answers

Q: How are mortgage securities created?

A large group of mortgage loans, typically at least 100, is combined into a pool with coupon rates and remaining maturities kept as close together as possible. An offering circular and pool supplement are created, a unique QIP number is assigned, and the security is auctioned to dealers or underwriters.

Q: What role do Freddie Mac and Fannie Mae play in mortgage security creation?

Freddie Mac purchases or guarantees mortgage loans that can be combined into pools. Freddie Mac calls its mortgage securities participation certificates, or PCs, while Fannie Mae calls its securities mortgage-backed securities, or MBS.

Q: What does pooling mean in mortgage security creation?

Pooling means combining many mortgage loans into a single pool underlying a security. The process generally tries to group loans with similar coupon rates and remaining maturities rather than mixing loans with substantially different characteristics.

Q: What do WAC and WARM describe in a mortgage pool?

WAC means weighted average coupon, which summarizes the mortgage coupons in the pool. WARM means weighted average remaining maturity and accounts for the fact that some pooled loans may already be a few months old.

Q: What information is included in an offering circular and a pool supplement?

Freddie Mac’s generic offering circular runs close to 100 pages and primarily covers risk disclosures and terminology rather than quantitative facts about the underlying mortgages. The pool supplement contains details such as the pool description, historical factors, coupons, and other characteristics linked to its QIP number.

Q: Why is a QIP number important for mortgage securities?

A QIP number is a unique security identifier connected to the information disclosed about a mortgage pool. After issuance, the security trades based on that identifier and its associated disclosures.

Q: What additional information is disclosed for adjustable-rate mortgage pools?

Adjustable-rate mortgages must be described by more than their current coupon. Their disclosures also address characteristics such as different adjustment dates.

Q: How are mortgage securities sold and traded after creation?

The securities are first auctioned to dealers or underwriters, including firms such as Goldman Sachs and Morgan Stanley, which bid on them and sell them to investors. Potential buyers include foreign investors, pension funds, and insurance companies; afterward, the securities can trade at any time and may be divided or recreated into different tranches.

Summary & Key Takeaways

• The process of mortgage security creation involves pooling mortgage loans to create securities that are then auctioned to dealers and underwriters. These securities can be traded based on unique identifiers, ensuring market transparency and liquidity.

• Freddie Mac and Fannie Mae play significant roles in the mortgage securities market, offering different types of securities with detailed information provided through offering circulars and pool supplements.

• Adjustable-rate mortgages and other specific loan types require additional disclosures, reflecting the complexity and legal intricacies involved in the mortgage security creation and trading processes.