On the basis of evaluations by Vigeo, Legrand has been confirmed as a component stock of the ESI Excellence Europe index. This index comprises securities belonging to the Ethibel register, according to a Best-in-Class approach combined with ethical exclusion criteria. Forum ETHIBEL is a consultancy agency for corporate social responsibility (CS) and socially responsible investment (SI).

Aside from the ESI index, Legrand is also part of the following stock market indices and CS registers: DJSI Europe, FTSE4Good, Corporate Oekom ating, ECPI EMU Ethical Equity, Ethibel Pioneer, Ethibel Excellence registers and the 2014 Sustainability Yearbook.