Calamos Launches CAYN: An Indexed Take on the Least-Of Autocallable

Calamos Investments, which manages more than $53 billion in assets, is now bringing the strategy into an ETF. Developed with MerQube and Citibank, the Calamos Least-Of Autocallable Income ETF

was launched on NYSE Arca on October 26, 2026. Calamos describes it as the world's first indexed least-of autocallable income ETF. The fund seeks high monthly income by referencing the weakest performer among three widely held U.S. equity ETFs: the SPDR S&P 500 ETF Trust

SPY

+0.71%

, the Invesco QQQ Trust

QQQ

+1.11%

and the iShares Russell 2000 ETF

IWM

+0.45%

.

How CAYN works

Rather than holding a single note, CAYN seeks exposure to the MerQube US Equity Least-Of Autocallable Index (MQAUTOWL). The index reflects a theoretical portfolio of at least 52 synthetic three-year autocallable notes, laddered weekly. For each note, coupon, autocall and principal outcomes are set by whichever of the three reference ETFs is performing worst.

Coupons are paid while the worst performer stays within 30% of its starting level. After a one-year non-call period, a note is called if the worst performer is back above its starting level, and the proceeds are reinvested into a new note on the same terms. A 30% barrier also applies to principal at maturity. A memory feature stores any missed coupons and pays them if the worst performer recovers above the coupon barrier.

Weekly laddering spreads note start dates across the year, so no single entry point dominates. The three-year term also gives each note more time to recover from a sell-off before maturity, which Calamos says is designed to reduce the risk of principal impairment.

What the index approach aims to improve

Calamos positions CAYN against two existing routes into the strategy: single structured notes and non-indexed worst-of ETFs. Relative to both, the firm says CAYN seeks enhanced tax efficiency, improved coupon reliability and greater principal preservation. Matt Kaufman, Global Head of ETFs at Calamos, frames the aim as bringing "a degree of principal preservation and coupon reliability" to the most popular product type in the legacy autocallable note market.

CAYN uses the same "Structured ETF" framework as the firm's existing autocallable funds, trading the index on swap. Calamos says this is an approach the worst-of strategy has not previously had in an ETF. Because the strategy follows a published, rules-based index, investors can also review how it would have behaved in past stress periods such as the 2008 financial crisis and the 2020 Covid drawdown.

Building on a growing autocallable lineup

CAYN extends what Calamos calls the broadest line of autocallable ETFs in the world. The range began in June 2025 with the Calamos Autocallable Income ETF

, which the firm describes as the first autocallable income ETF and which has since grown to about $1.4 billion in assets. A Nasdaq-referenced version, CAIQ, followed in November 2025, and the growth-oriented CAGE launched in April 2026, alongside the firm's first autocallable UCITS ETF in Europe.

Demand for the category has been strong. Morningstar data cited by Calamos show autocallable ETFs as the fastest-growing sub-category within Derivative Income in 2026, with assets rising roughly tenfold year to date to about $6 billion. The broader Derivative Income category drew more than $50 billion in flows through September, approaching $200 billion in assets. Calamos President and CEO John Koudounis said the category is taking off as investors seek multiple autocallable strategies.

What investors should weigh

The least-of design is the source of both the income potential and the added risk. Coupons are contingent, not guaranteed: because they depend on the weakest of three indices, a sharp decline in small caps alone can halt payments even if large caps hold steady. If the worst performer finishes a note's term below the 30% maturity barrier, that portion of the portfolio is fully exposed to the asset's decline from its starting level, a binary outcome that can produce sudden, significant losses. Returns are limited to coupons, so investors do not participate in equity upside. CAYN is actively managed and non-diversified, gains its exposure through swaps that introduce counterparty risk, and carries a 0.74% expense ratio.

For income-focused investors and advisors already familiar with structured notes, CAYN offers a way to access the least-of strategy with exchange-traded liquidity and index-level transparency.

 

Please note this article is for information purposes only and does not in any way constitute investment advice. It is essential that you seek advice from a registered financial professional prior to making any investment decision.