American Century Investments, a global asset manager that entered the exchange-traded fund business earlier this year with two products, more than doubled its lineup with Wednesday’s launch of three ETFs—one focused on U.S. equities, one on international equities and the other on municipal bonds.

The American Century STOXX U.S. Quality Growth ETF (QGRO) and American Century Quality Diversified International ETF (QINT) are passive products that employ the company’s intelligent beta methodology.

In the case of QGRO, the fund tracks the iSTOXX American Century USA Quality Growth Index, which screens a universe of the 900 largest publicly traded U.S. securities to find roughly 200 to 300 companies with the best growth and quality characteristics. Companies within the fund’s underlying index are weighted by a growth score based on sales, earnings, operating income, profitability and cash flows.

American Century says the methodology distinguishes between stable growth and pure growth companies by dynamically allocating to each category and adjusting sector exposures depending on the market environment. The company sees this fund as being part of the core growth component of investor portfolios. Top five holdings include Adobe Systems Inc., Zoetis Inc., Nvidia Corp., IDEXX Laboratories Inc. and Amazon.com Inc. The fund’s expense ratio is 0.29 percent.

The American Century Quality Diversified International ETF follows the Alpha Vee American Century Diversified International Equity Index comprised of global mid- and large-cap stocks in developed and emerging markets, excluding the U.S. The index methodology uses various metrics to find 400 to 600 companies that are weighted based on their combined growth and value scores. The index dynamically adjusts exposures as market conditions change. American Century views this fund as a way to enhance core international exposure. Its expense ratio is 0.39 percent.

The third product in this triad, the American Century Diversified Municipal Bond ETF (TAXF), is an actively managed municipal bond fund designed to dynamically allocate between investment-grade bonds and high-yield bonds (up to 35 percent) to take advantage of prevailing market conditions. Its expense ratio is 0.29 percent.

The fund is managed by senior vice president and portfolio manager Steven Permut, as well as Joe Gotelli and Alan Kruss, both of whom are vice presidents and portfolio managers at American Century. The team members overseeing this fund average 24 years of industry experience.