Janus Henderson is joining the ESG rush in the $6.8 trillion exchange-traded fund market. The $428 billion asset manager is launching five actively managed ETFs that integrate sustainable investing criteria, according to a statement Thursday. Three will invest in equities, with products targeting U.S., international and natural-resource stocks. Two focus on fixed income, buying corporate credit and a broader range of bonds. They're the latest addition to the booming industry for funds that meet higher environmental, social and governance standards. In 2020 and the first half of 2021, 57 U.S.-listed ETFs incorporating ESG criteria debuted, compared with 40 in the previous two years, according to data compiled by Bloomberg.