Contran Corp, Ten Percent Owner at Kronos Worldwide, holds 40.39M shares in NL Industries (Ticker: NL), holds 10.76M shares in Compx International (Ticker: CIX), holds 106.47M shares in Valhi (Ticker: VHI). Most recently, Contran Corp Sold ― shares of NL Industries on Jun 02, 2022 for an estimated value of 16.46K.