The current institutional shareholding score of NL Industries Inc is 3.00, ranking 133 out of 182 in the Machinery, Tools, Heavy Vehicles, Trains & Ships industry. The latest institutional shareholding proportion is 12.96%, representing a quarter-over-quarter increase of 3.50%. The largest institutional shareholder is James Simons, holding a total of 0.00 shares, representing 0.33% of shares outstanding, with 0.69% decrease in holdings.