As Bloomberg points out, Nuveen offers a pair of mid-cap ESG ETFs: the NuShares ESG Mid-Cap Value ETF (BATS: NUMV) and the NuShares ESG Mid-Cap Growth ETF (BATS: NUMG), both of which debuted in late 2016.

Nuveen’s ESG ETF methodology follows four key components, including ESG rating or captures an issuer’s performance on key ESG risks relative to peers; controversy score or an issuer’s exposure and response to event-driven controversies; controversial business involvement or issuer’s activity in industries that may cause significant social harm like tobacco; and low carbon criteria or the carbon intensity of an issuer based on involvement in certain industries.

Aided by the ascent in growth stocks, NUMG is impressing this year with a gain of over 10%.

For more information on mid-caps, visit our mid-cap category.