Calamos Launches an Active SMID Growth ETF After Small Caps Rose 20%
Calamos Investments launched the Calamos Timpani SMID Active Growth ETF, ticker CTAG, bringing portfolio manager Brandon Nelson to ETF investors. PR Newswire The launch was disclosed on Sept. 21, 2026. It puts Nelson's small- and SMID-cap growth mandate, SMID means small and mid-size companies, inside an active ETF, a stock fund that trades through the day with a manager picking stocks rather than tracking an index.
Brandon M. Nelson is Senior Portfolio Manager at Calamos Investments responsible for small- and smid-cap growth strategies. Calamos The CTAG listing extends that remit beyond the mutual fund structure. No other personnel or mandate changes were disclosed in the verified facts.
The listing follows gains for smaller companies. The Russell 2000 index was up about 20% in 2026. The S&P Small Cap 600 index was up about 20% in 2026. The S&P 500 was up 12.7% in 2026. MarketWatch Those figures were reported on Aug. 31, 2026. MarketWatch titled that report 'The Small-Cap Rally Is Starting to Look Stretched'.
Nelson had already drawn coverage for stock selection within that rally. MarketWatch published an article on July 27, 2026 about Brandon Nelson of Calamos Investments seeking small-cap companies with a "unique edge". MarketWatch Morningstar republished a MarketWatch article titled 'This small-cap fund is built to win the earnings-report games companies play' about manager Brandon Nelson and the Calamos Timpani Small Cap Growth Fund. Morningstar That republication was also dated July 27, 2026.
In my view, timing changes the math here. A SMID active growth product arriving after a roughly 20% small-cap advance starts with higher multiples. That is a higher price for each dollar of earnings. Gains also tend to spread less evenly after a long market-wide rally. Stock picking has to do more work.
The broader context here is plumbing. SMID growth stocks can be harder to trade in size, swing more stock by stock, and crowd into the same earnings forecasts, like many bets placed on the same earnings beat. An active ETF changes how shares are created and traded during the day compared with a mutual fund, but it does not change how the underlying small stocks trade. Differences from a benchmark, turnover, and trading costs still limit what a manager can do.
Looking at what this means for portfolio construction, the question is timing versus skill. The 2026 data show small caps ahead of large caps by a wide margin. If that lead came from investors paying more for each dollar of earnings rather than from earnings growth itself, future return assumptions get lower. Active SMID managers usually point to steady earnings and pricing power. The test is whether repeated beat-and-raise results hold when growth slows.
For due diligence, focus on continuity. Same manager, same philosophy, new vehicle. Compare holdings overlap, position sizing, and sell discipline between the existing Timpani Small Cap Growth Fund and CTAG. Watch how the ETF handles inflows when small caps turn choppy. Buying after a stretched rally punishes drift most.
