Texas Stock Exchange Celebrates Primary Listing of Calamos Investments’ CTAG Exchange-Traded Fund

Ilinois-based Calamos is the First Asset Manager to List a Mutual Fund-to-ETF Conversion on TXSE

DALLAS, October 28, 2026 - The Texas Stock Exchange welcomed Calamos Investments to the TXSE headquarters in Dallas to ring the opening bell and celebrate the listing of the Calamos Timpani Active SMID Growth ETF (TXSE: CTAG). Watch the bell ceremony HERE.

CTAG began trading on TXSE on September 21, 2026, when it became the first actively managed mutual fund-to-ETF conversion to list on the exchange. CTAG is a conversion of the Calamos Timpani SMID Growth Fund, a top-performing fund in the Morningstar Small Growth category.¹

"For nearly five decades, Calamos has built a legacy of investment innovation and expertise, continually finding new ways to meet the evolving needs of investors," said Rob Marrocco, Global Head of Exchange Traded Products at the Texas Stock Exchange. "We're honored that Calamos has chosen TXSE as the listing venue for CTAG as we continue building a marketplace that brings greater competition and choice to issuers and investors across the country."

"Our active growth expertise is what brings us here today: to celebrate the Calamos Timpani Active SMID Growth ETF, ticker CTAG, the first actively managed mutual fund-to-ETF conversion to list on the Texas Stock Exchange," said John Koudounis, President and CEO of Calamos Investments. "Texas is a remarkable home for capital and ambition, and we're honored to be one of the first launches on TXSE."

Founded in 1977 by John P. Calamos, Sr., Calamos has grown into a global investment firm headquartered in the Chicago metro area. Under President and CEO John Koudounis, its assets under management have nearly tripled to $53 billion. The firm has long been a leader in innovation in the U.S. ETF market, including launching the world's first suite of downside-protected Bitcoin ETFs.

About the Texas Stock Exchange

Texas Stock Exchange LLC, a wholly owned subsidiary of TXSE Group, is a fully integrated, electronic, national securities exchange headquartered and incorporated in Texas. Backed by many of the world's largest financial institutions and liquidity providers, TXSE is purpose-built to bring real competition to corporate listings and expand access to America's public markets. With issuer alignment and transparency at its core, TXSE serves as a global listing and trading venue for both public companies and the growing universe of exchange-traded products. For more information, visit us at www.txse.com, on LinkedIn, or on X.

Media Contact:
[email protected]

About Calamos

Calamos Investments is a diversified global investment firm offering strategies across alternatives, multi-asset, convertible, fixed income, equity, and sustainable equity. The firm serves corporations, pension funds, endowments, foundations, individuals, and the financial advisors who work with them through separate accounts, mutual funds, closed-end funds, private funds, interval funds, ETFs, and UCITS funds. Calamos is headquartered in the Chicago area, with offices in New York City, San Francisco, Milwaukee, Portland, Oregon, and the Miami area. For more information, visit www.calamos.com

Media Contact:
[email protected]

¹ The Calamos Timpani SMID Growth Fund outperformed peers in the Morningstar US Fund Small Growth category since its 2019 inception and in recent years, according to data from Morningstar Direct. The fund more than doubled the performance of the average fund in the Morningstar Small Growth category in 2024 and 2025. The Institutional share class (CTIGX) of the fund was a top decile performer over the 3-year period ended August 31, 2026. Institutional share class annualized total return and rankings in the Fund's Morningstar category as of 8.31.26 are as follows: 26.79% return ranking 3rd percentile for the 3-year period (13 / 521), 7.21% return ranking 14th percentile for the 5-year period (54 / 499), and 13.39% return ranking 13th percentile since inception (53 / 502).