A bank holds $2 billion in leveraged loans. By packaging $1.5 billion into a CDO, it frees up $120 million in regulatory capital overnight, without selling a single loan. That is the power of financial structuring. The exam tests whether you understand the mechanics behind it.
Structuring takes a pool of assets (mortgages, loans, bonds) and carves the cash flows into pieces with different risk profiles. The key mechanism is tranching. You create an SPV (special purpose vehicle), transfer the assets in, and the SPV issues securities in layers.
The SPV is bankruptcy-remote. If the bank that originated the loans goes bankrupt, the collateral pool is legally isolated. Investors own claims on the SPV's assets, not on the originator.
Three tranches sit in the typical structure:
- Senior tranche. First to receive cash flows, last to absorb losses. Highest credit rating, lowest yield.
- Mezzanine tranche. Absorbs losses after equity is wiped out. Middle rating, middle yield.
- Equity tranche (first-loss piece). Absorbs all initial losses. No rating. Highest yield. Often retained by the sponsor.
Common mistakes
- Confusing CMOs and CDOs. CMOs restructure prepayment risk on mortgage pools. CDOs restructure credit risk on loan, bond, or asset-backed security (ABS) pools. The exam will describe a structure and ask which risk is being redistributed. If the collateral is mortgages and the tranches differ by average life, it is a CMO.
- Thinking subordination eliminates credit risk. Subordination redistributes credit risk from senior to junior tranches. It does not remove risk from the structure. The total credit risk of the pool is unchanged. Senior investors are protected only as long as subordination is sufficient to cover cumulative losses.
- Listing only three ISDA credit events. The standard ISDA agreement names seven trigger events: bankruptcy, failure to pay, restructuring, obligation acceleration, obligation default, repudiation / moratorium, and government intervention. The exam offers partial lists (often just the first three) as traps.
Bottom line
- Tranching splits a collateral pool into senior, mezzanine, and equity pieces; losses flow bottom-up, hitting equity first, senior last.
- Structured products move markets toward completeness by creating payoffs in states of the world where investors most need them.
- CMOs redistribute prepayment risk across seven tranche types; CDOs redistribute credit risk; PO benefits from contraction, IO benefits from extension.
- A mezzanine tranche bounded by lower and upper attachment points is economically equivalent to a collar, bull call spread, or bull put spread on the pool.
Exam shortcut
When a question describes a CDO sponsor's motivation, the answer pivots on one word: bank = balance sheet CDO (capital relief, exposure reduction, or capital infusion), manager = arbitrage CDO (spread income). When it describes coverage tests, par-based = cash flow CDO, mark-to-market = market value CDO. DECISION: Fixed pool at closing → static CDO; active trading allowed → managed CDO.
The full lesson (about 6,773 words, 45 min read) adds 2 worked examples, all 7 common mistakes, a self-check, free in the app.
Learning objectives
- strategies
- credit risk bankruptcy
- bonds loans
- direct lending
- mezzanine
- advanced mezzanine
- venture debt
- distressed debt
- asset based lending
- abs risks
- abs
- mortgage overview
- residential mortgages
- mortgage reit returns
- cat bonds
- cat trigger types
- cat valuation
- longevity mortality
- life settlements
- viatical
- structuring overview
- cmos
- cdo intro
- cdo variations
- balance sheet arbitrage cdo
- arbitrage cdo mechanics
- cash flow vs market value cdo
- other cdos
- cdo risks
- credit enhancements
- credit deriv markets
- cds
- cds index
- other credit derivs
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