S.D. Codified Laws § 37-1-3.2 : — TRADE REGULATIONRESTRAINT OF TRADE, MONOPOLIES AND DISCRIMINATORY TRADE PRACTICES —1-3.2 - Monopolies and attempts to monopolize unlawful

The monopolization by any person, or an attempt to monopolize, or combine, or conspire with any other person or persons, to monopolize any of the trade or commerce within this state shall be unlawful.