Calamos Nasdaq-100 Structured Alt Protection ETF – September (CPNS)

CPNS — Key Facts

Structured outcomes involve precise timing and careful monitoring of market-linked options through each annual period.


Fund name	Calamos Nasdaq-100 Structured Alt Protection ETF – September
Ticker	CPNS (Cboe)
Underlying index	Nasdaq-100 (via Invesco QQQ Trust)
Outcome period	September 1 through August 31 (annually)
Upside strategy	Capped participation via FLEX call options
Downside strategy	100% protection via long put options
Funding entity	Calamos Investments (founded 1989)
Management fee	0.69% annually
Net assets (June 2026)	~$25.2 million

CPNS is the September-resetting variant of Calamos’ structured protection ETF suite. Unlike a traditional index fund, which holds the 100 stocks of the Nasdaq-100 or tracks them through a proxy, CPNS holds only options — specifically, a collar consisting of long calls, long puts, and short calls written on the Invesco QQQ Trust and expiring 12 months from the outcome period’s start date. The fund’s annual cycle ties to the calendar: every September 1, the old options expire and new ones are negotiated for the next year.

How the collar works in practice

The fund buys long calls at a higher strike price (which sets the upside cap), buys long puts at a lower strike price (which sets the downside floor), and sells short calls at the same strike as the long calls. This three-legged structure — the collar — costs less than owning the puts and calls separately, because the income from the short calls partially offsets the cost of buying protection. Calamos’ role is to negotiate the specific strikes and collect the fees.

As of early June 2026, with only weeks remaining in the current (September 2025 – August 2026) outcome period, CPNS showed a cap of 1.41% and a floor of -5.26%, reflecting how little remained to be gained or lost. At inception of that period in September 2025, the cap would have been substantially higher — reflecting a full 12 months of potential gains to capture. The cap-to-floor width depends entirely on the volatility environment and interest rates at the time of negotiation.

Timing and outcome realization

CPNS shares can be purchased or sold any trading day, but the fund’s protective outcome only locks in for shares held from the outcome period’s first day through its last. An investor who buys on September 10 and holds until August 31 a year later experiences the full benefit of the collar negotiated on September 1. An investor who buys on August 1 — late in the period — owns a position that expires in just over a month and carries a far tighter cap, because there is little time left for the index to move.

This timing dependency is the fund’s defining constraint. Because outcomes reset annually, CPNS is not a passive buy-and-hold product. It is a series of distinct one-year investments, each with its own strike prices and cap rates. Investors who remain in the fund through multiple outcome periods experience the full reset effect — some periods may offer attractive caps, others may find the negotiated cap constrained by market conditions prevailing on the reset date.

The capital in play

Calamos Investments manages the fund and sponsors the Calamos ETF Trust, which holds the fund’s assets and manages the options positions. As of mid-2026, CPNS held approximately $25 million in net assets, a modest amount compared to mainstream Nasdaq-100 funds (like QQQ, which holds tens of billions). The small asset base reflects the fund’s niche appeal — it attracts investors willing to trade away potentially large gains for certainty of no loss.

The 0.69% annual management fee is paid regardless of market conditions. For comparison, a typical Nasdaq-100 index fund charges 0.20% or less. That 49-basis-point difference accumulates: over 10 years of 10% annual Nasdaq-100 gains, the fee drag compounds significantly.

The research task

An investor evaluating CPNS should begin by checking the current outcome period’s cap rate (published on the Calamos website) and asking: am I comfortable with that ceiling in exchange for floor protection? If the cap is 5% and the Nasdaq-100 is expected to rise 12%, the floor protection is worthless and the cap is a real cost. If markets are expected to be choppy, the protection may justify the foregone upside.

The prospectus and annual fact sheets are the foundational documents. They explain the specific options positions held, the credit quality of the options counterparties, and the tax treatment (the fund is ETF-wrapped, which brings tax advantages over buying options directly). The fund’s quarterly holdings reports show the long call and put positions and their strike prices.

CPNS is not an investment recommendation but a tool for a specific investor type: someone who wants Nasdaq-100 exposure but is willing to cap upside to eliminate downside over a one-year planning horizon.