Many blamed the debacle and near crushing collapse of financial markets during the financial crisis of 2007-09 on the financial industry's addiction to securitization. Many know securitizations as an alphabet soup of finance. Special-purpose vehicles are set up by asset managers, some of which are banks; others might be other financial institutions. The same SPV entities issue bonds that have been best known by their acronyms or initials: CMOs, CMBSs, CLOs, CDOs, MBS, CBOs, etc.
These SPVs bought loans of all kinds (mortgages, auto loans, commercial real estate loans, credit card receivables, and more). They funded such purchases by issuing tranches of bonds. Banks, other financial institutions, bond funds and broker/dealers bought the bonds. They held them or traded them or made markets in them.
In the euphoria of financial markets and frantic activity before 2008, their arrangers or investment banks (Lehman Brothers and Bear Stearns immediately come to mind) set up the SPVs, arranged and issued the bonds, collected their fees, and proceeded to set up other SPVs (partly to continue to collect more fees).
To issue such bonds and get investors comfortable, SPV asset manager must arrange for rating agencies to rate the bonds, typically in tranches from AAA down to B. A AAA investor could invest in mortgage markets, earn reasonable returns without owning mortgages. Banks that originate the loans had a place to park them and allow the process to originate more. By selling into SPV structures, banks could transfer the credit risks to other parties and could generate liquidity or cash to deploy as they prefer.
In the glory years before 2008, many institutions had swooned toward securitizations "on steroids." There were plain-vanila securitizations, but also re-securitizations (securitizing the BBB tranches of structured finance, or "CDO-squared"). There were securitizations of credit insurance (index-tranche credit-default swaps). There were institutions, like AIG, that sold credit insurance on securitized bonds. The objective might not have been (by mid-2007) to transfer risk or structure properly managed portfolios of loans into highly rated securities, but to find a reason to create yet another SPV (to earn more asset-management fees).
A problem arising from the crisis was the notion that an SPV could buy any form of credit asset (corporate loan, home loan, consumer loan, receivable, etc.) and use models to create investment-grade bonds (AAA, AA, e.g.). By 2007, non-investment-grade loans were used to create AAA bonds. Second-lien home mortgages and mortgages for which the borrowers had frighteningly low credit scores or needed only to make interest payments for a long term were funneled into structures funded by AAA or AA bonds. As long as the ratings were maintained at investment-grade levels, investor classes would be interested in purchasing these bonds or comfortable holding them.
By mid-2007, the structures began to collapse. Borrowers in many asset classes couldn't pay as promised or couldn't pay with the levels of confidence asset managers and rating agencies projected. As borrowers defaulted, as SPVs collapsed, and as structured bonds defaulted, the financial crisis ensued.
In the years since, securitization and structured finance didn't disappear into finance history books. Regulators and bank supervisors didn't prohibit such structures or some of the practices and privileges of banks. Securitizations (the creation of AAA or AA bonds from loan portfolios of all kinds) continue today--but with a flock of new rules, restrictions and (for banks) capital requirements.
Long lists exist today of what banks can and cannot do. Rating agencies are required to be more transparent and more conservative in determining how a AAA bond can fund a portfolio of BB corporate loans. And some banks, asset managers and institutions continue to be creative about the kinds of loans, leases or receivables that can be securitized (data-center leases, e.g.).
For data centers, the so-called SPV is de facto a data center that owns computer infrastructure (servers) and leases the assets to uses (including perhaps "hyperscalers" such as, say, Nvidia or Meta. The SPV's balance sheet will report net lease receivables. Lease income is netted for related data-center costs (cooling and power costs, e.g.). The net lease receivables are funded by the securities rated and issued.
Yet occasionally, even since the financial crisis and the slate of corrective action taken by regulators, problems, a collapse or a unsettling event occurs. In the fall, 2025, financial markets and risk managers watched the failure of auto-dealer and lender TriColor, an institution that made auto loans to an uncreditworthy borrowing segment, sold some of them into temporary SPVs (called "warehouses"), which sold some of those into final SPV, which would issue long-term bonds to fund the purchase of the auto loans.
As the auto loans began to default en masse (not a surprise for many), all related structures imploded, too. And lenders or investors to such SPVs are absorbing massive losses, while the original TriColor stumbled into the bankruptcy. As with the crisis of 2008, lessons are now being charted and culled with hopes that future crises in securitizations will be averted.
Securitizations : the basics
Let's return to the basics. Debt (including loans, receivables, or leases) is purchased
by the SPV and included in the SPV’s loan portfolio. An asset manager is
responsible for identifying the assets to place into the SPV. The SPV may
purchase loans from many originators (often other banks), but it requires
funding to support such purchases.
Securitizations, therefore, mean the SPV has elected to issue tranches of bonds to fund the loan portfolio. To get investors comfortable, the SPV (or its asset manager) will seek credit ratings from the rating agencies. Asset managers seek to get the maximum amount funding from AAA-rated issued bonds, partly because AAA-rated bonds are easier to sell to the public and AAA-bonds imply cheap funding. Indeed, the SPV (like any financial institution) seeks to generate wide net-interest-earned spreads by keeping funding costs as low as possible and to permit equity holders (or "residuals," as they are sometimes called) to generate high returns.
The types of loans or credit assets (or exposures) that are
securitized may include home mortgages, credit-card receivables, auto loans,
commercial real estate loans, corporate non-investment-grade loans, small-company
loans, or export receivables. But assets can also range from equipment leases to royalties earned from holding music licenses. In recent periods, asset managers are interested in securitizing the lease payments tied to data centers. (Data-center companies lease the equipment to technology companies. Hence, imagine the demand or opportunity to create securities backed by lease payments on computer infrastructure that supports the rapid growth in AI.)
CLO structures purchase non-investment-grade loans (BB+ and lower) and have become as a sector the largest lending group in leveraged finance in the U.S. (and in other develped markets, too). CLOs fall within the broader segment of "private credit" because such public-like bonds fund the private loans and because most CLO structures are now managed by the stalwarts of private credit, names like Blackstone, KKR, Apollo and Ares.
Banks may not be permitted to structure and manage CLO SPVs (a regulatory fallout from the financial crisis), but are interested in investing in CLO bonds (A-rated or better), mostly because some of the highly rated issues are liquid and because the yields are often better than the returns from investing other A-rated-or-better bonds (including U.S. Government bonds).
CMBS structures purchase commercial real-estate loans, often buying from well-established corporate real-estate banks. They purchase by "property types"--office space, multifamily housing, warehouses, etc.
RMBS SPVs include family home mortgages and have been structured in countless ways, including portfolios with sub-prime loans and payouts to investors in "sequential" or "non-sequential" ways. "Private label" SPVs refer to structures that would not involve the federal agencies purchasing the mortgages or guaranteeing the debt in such SPV structures.
In both CMBS and RMBS structures, many banks may originate the mortgages, sell them into these structures, but will happily agree to service them (collect the principal and interest from the underlying mortgages), of course for a fee throughout the long life of such mortgages.
Credit-card structures are sometimes called "flow" structures because receivables run off, but run back on, too, because of the revolving natures of credit-card exposures. The SPVs account for the well known "minimum monthly payment" for credit cards in projecting the cash inflows.
The portfolio and the risks accompanying it
The “loan portfolio” in a securitized structure is funded by the SPV issuing securities (bonds). The SPV may also have a small equity investment or “residual” (funded in part by the asset manager). In many cases, to make the bonds more attractive or to conduct analysis on behalf of the bondholder, the SPV will likely need to call upon rating agencies to rate the top tranches of bonds (AAA, AA, A, BBB). It might be possible to sell tranches without ratings, but investors require an expert third party to analyze the extreme risks in the portfolio.
To rate the tranches accurately, rating agencies use models
to quantify portfolio risks, credit-risk deterioration, and worst-case
scenarios. Portfolio models focus on expected loss and maximum probable loss in
the portfolio. The projection of loss considers many factors and
variables—including macro scenarios, correlation risks, concentration risks by
loan type or region, recovery rates after loan defaults, etc. Bond-holders among the highest tranches are
collateralized by the loans in the portfolio. (The loans themselves are secured (commercial real estate, e.g.) or unsecured (credit-card receivables).
Based on the outcome the models, the rating agency
determines the amount of collateral cushion required to maintain a tranche
rating (AAA, AA, A, BBB, etc.). This is referred to as “over
collateralization.” For the most part, the AAA tranche will be collateralized by all assets in the portfolio. The over-collateralization amount is effectively the maximum loss on the SPV's balance sheet before the AAA tranche must absorb a default or loss. In many structures, the AAA loss cushion migh range from 25-35%. (The structure could lose 25% of total assets (from massive defaults in the portfolio) before the AAA investor risks not receiving interest and principal payments.
Rating agencies perform the detailed stress tests, the scenario testing, sensitivity analysis and and loss analysis. They identify risks in the portfolio and outline the waterfall of payouts to investors (the receipt of
principal and interest payments from the portfolio to fund the interest expense
and principal payments to the bondholders (“waterfall”)). The SPV’s asset
manager manages defaults, cash-flow deficiencies, and other signs of
deterioration in the portfolio.
The process of securitizing loans includes a period of
warehousing, where a special SPV is set up to hold assets before they are sold
to the final SPV that issues rated bonds. The warehouse SPV typically relies on
short-term bank financing to hold the loans or “ramp up.” It was in warehouses where banks found trouble and a deluge of defaults in the Tri-Color case. Defaulting auto loans in the warehouse cannot be sold to the final SPV; hence, banks funding those warehouses absorbed losses.
As straightforward as the structuring and process might appear, there have been collapses, crises and over-zealous asset managers and sometimes the failure of rating agencies to compute an adequate maximum probable loss. There are
lessons learned for investors, participants, bank regulation and even rating
agencies. Lessons learned led to new procedures and evolving structures in
securitization and may have resulted in limiting the roles of banks.
Emerging markets around the world have have observed the advantages and disadvantages of securitizations and, of course, might benefit from lessons learned. They may see opportunities to expand in securitizations—partly to permit banks to transfer risk to accepting third parties or to sell off assets for liquidity purposes to be able to fund new loans.
Emerging markets, as part of implementation or growth, will likely have adopted many of the lessons learned as they establish rules, procedures and what kinds of institutions can perform in various roles. Sovereign governments and/or central banks set rules and expected practices for securitizations. They also provide the legal framework to permit banks to sell loans to third parties and allow for the formation of SPVs.
Tracy Williams



