Calamos Bitcoin 80 Series ETF Filing Effective March 24, 2026

TL;DR

**Calamos Bitcoin 80 Series ETF is officially effective as of March 24, 2026, clearing a hurdle for launch.**

AI Summary

Calamos ETF Trust filed a 497 form on March 24, 2026, for its Calamos Bitcoin 80 Series Structured Alt Protection ETF - April (Ticker: S000090059). This filing confirms the effectiveness of definitive materials for this specific Bitcoin-linked ETF. This matters to investors because it indicates the fund is moving forward, potentially making it available for trading, and provides updated information on its structure and protection features.

Why It Matters

This filing confirms the final details and effectiveness of a new Bitcoin-linked ETF, providing clarity and potentially opening it up for investor access.

Risk Assessment

Risk Level: medium — While a 497 filing is routine, the underlying asset (Bitcoin) and the 'structured alt protection' nature of the ETF introduce inherent market and complexity risks.

Analyst Insight

Investors interested in Bitcoin exposure with structured protection should review the full prospectus for the Calamos Bitcoin 80 Series Structured Alt Protection ETF - April, now that its definitive materials are effective, to understand its specific features and risks.

Key Numbers

• 2026-03-24 — Filing Date (Date the 497 form was filed and became effective)
• 0001579881 — CIK (Central Index Key for Calamos ETF Trust)
• S000090059 — Series Ticker Symbol (Identifier for the Calamos Bitcoin 80 Series Structured Alt Protection ETF - April)
• 333-191151 — File No. (Registration statement file number for the ETF)

Key Players & Entities

• Calamos ETF Trust (company) — the filer of the 497 form
• Calamos Bitcoin 80 Series Structured Alt Protection ETF - April (company) — the specific ETF detailed in the filing
• March 24, 2026 (date) — the filing and effectiveness date
• 0001579881 (person) — CIK for Calamos ETF Trust
• S000090059 (person) — Series Ticker Symbol for the ETF
• C000256936 (person) — Class/Contract CIK for the ETF

Forward-Looking Statements

• The Calamos Bitcoin 80 Series Structured Alt Protection ETF - April will likely become available for public trading soon after its effectiveness date. (Calamos Bitcoin 80 Series Structured Alt Protection ETF - April) — high confidence, target: 2026-04-30

FAQ

Filing Documents

• tm268122d1_497.htm (497) — 5KB
• 0001104659-26-033769.txt ( ) — 6KB
• S000090059
• C000256936

From the Filing

Rule 497(e) File No. 333-191151 CALAMOS ETF TRUST (the “Trust”) Calamos Bitcoin 80 Series Structured Alt Protection ETF ® – April (the “Fund”) Supplement dated March 24, 2026 to the Fund’s Prospectus dated November 28, 2025, as amended This supplement updates certain information contained in the Fund’s prospectus and should be attached to the prospectus and retained for future reference. Capitalized terms not defined herein have the same meaning as in the Fund’s prospectus. As described in the Fund’s prospectus, an investment in shares of the Fund is subject to an upside return cap (the “Cap”) that represents the maximum percentage return an investor can achieve from an investment in the Fund for the Outcome Period of approximately one year. The Fund’s current Outcome Period ends on April 7, 2026. The next Outcome Period will begin on April 8, 2026 and end on April 30, 2027 (the “Upcoming Outcome Period”). The Fund’s anticipated Cap range for the Upcoming Outcome Period beginning on April 8, 2026 is set forth below. 31.00% - 38.00% (30.31% - 37.31% after taking into account the Fund’s management fees) The Fund’s return will be further reduced by brokerage commissions, trading fees, taxes and non-routine or extraordinary expenses not included in the Fund’s management fee, as described in the prospectus. On April 8, 2026, the Fund’s prospectus will be amended to update all references to the Cap to reflect the Cap for the Upcoming Outcome Period, as described above.

View Full Filing

View this 497 filing on SEC EDGAR