The current institutional shareholding score of NewMarket Corp is 7.00, ranking 28 out of 67 in the Chemicals industry. The latest institutional shareholding proportion is 81.86%, representing a quarter-over-quarter increase of 21.10%. The largest institutional shareholder is ETHSX, holding a total of 52.87K shares, representing 0.70% of shares outstanding, with 32.08% increase in holdings.