represent 70 percent of the capital structure. Mezzanine
AA to BB-rated tranches are much smaller and typically
represent 4–12 percent of the capital structure each. Equity
tranches vary in size but are typically about 8–10 percent of
the capital structure.
CLOs are governed by a series of coverage tests to measure
the adequacy of the collateral balance and of cash ows
generated by the underlying bank loan collateral. One such
test is an overcollateralization test (OC test), which ensures
the principal value of the bank loan collateral pool exceeds
the outstanding principal of the CLO debt tranches. If the
bank loan collateral’s principal value declines below the
OC test trigger value, cash that otherwise would have been
distributed to the equity and junior CLO tranches will be
used to instead pay down senior debt tranche investors.
Another test computes interest coverage (IC test), which
ensures the adequacy of cash collected from the bank loan
collateral to pay CLO tranche interest. If collateral collections
decline below the IC test trigger value, cash that otherwise
would have been distributed to the equity and junior CLO
tranches will be used instead to pay down senior debt
tranche investors, in a manner similar
to the OC test described earlier. CLOs are also subject
to a variety of collateral concentration limits that seek
to limit risk in the bank loan collateral pool and protect
CLO investors from loss. Examples of these limits include
requirements for industry diversication in the underlying
pool of bank loans and exposure to non-senior secured loans
and single obligors. There are also limitations on the balance
of CCC-rated loans that can be included in the underlying
collateral pool, which helps contain overall default risk.
Most CLO portfolios are actively managed. The collateral
manager seeks to mitigate losses from loan defaults and
optimize the bank loan portfolio’s value through actively
managing the holdings and positioning of the portfolio
over a predened reinvestment period. CLOs do not have
mark-to-market tests and are only dependent upon cash ow
performance (e.g., timely payment of principal and interest),
ratings, maturities, and defaults of the underlying bank
loans. Therefore, CLO managers are not forced sellers during
periods of market volatility, and can buy and sell bank loans
to take advantage of opportunities in the market to nd
value or minimize losses on deteriorating credits.
Performance Tests
Excess Spread: The weighted average coupon of the
loan collateral is higher than the coupon paid to investors
to create an additional buer of cash.
Subordination: Deals are structured so junior tranches
absorb losses before senior tranches.
Risk-reduction technique that increases the likelihood
of repayment relative to the intrinsic risks of the
underlying collateral.
Overcollateralization Test: Par amount of assets / Outstanding
amount of related tranche and all tranches senior to it.
Interest Coverage Test: Interest on Assets / Interest due on
related tranche and all tranches senior to it.
Risk-reduction technique that increases the
likelihood
of repayment relative to the intrinsic risks of the
underlying collateral.
Redirect cash ows from subordinate tranches to purchase
additional collateral loans and repay senior debt if collateral
performance deteriorates.
Structural Protections of CLOs
Credit Enhancement
Excess Spread: The weighted average coupon of the
loan collateral is higher than the coupon paid to investors
to create an additional buer of cash.
Subordination: Deals are structured so junior tranches
absorb losses before senior tranches.
Risk-reduction technique that increases the likelihood
of repayment relative to the intrinsic risks of the
underlying collateral.
Excess Spread: The average interest collected from the
loan collateral is higher than the interest paid to investors
to create an additional buer of cash.
Subordination: Deals are structured so that junior tranches
absorb losses before senior tranches.
Risk-reduction technique that increases the
likelihood
of repayment relative to the intrinsic risks of the
underlying collateral.
Risk-reduction feature that increases the likelihood
of repayment relative to the intrinsic risks of the
underlying collateral.
Source: Guggenheim Investments.
5Guggenheim Investments Understanding Collateralized Loan Obligations – 2023