Steward Partners Significantly Reduces Nuveen ESG Mid-Cap ETF Holdings Steward Partners Investment Advisory LLC cut its stake in Nuveen ESG Mid-Cap Value ETF by 70.4% in the fourth quarter, selling 5,098 shares and retaining 2,147 shares worth $75,000. Other institutional investors also adjusted their positions, with some increasing holdings, reflecting a mixed sentiment toward this ESG-focused fund.1