NPK stock price ended at $143.4 on 星期三, after rising 0.74%
On the latest trading day May 20, 2026, the stock price of NPK rose by 0.74%, climbing from $143.36 to $143.40. During the session, the stock saw a volatility of 3.30%, with prices oscillating between a daily low of $140.01 and a high of $144.63. Notably, trading volume dropped by 41.4K shares on the last day despite the price increase, which may signal a potential uptick in risk in the near term. A total of 144.7K shares were traded, equating to a market value of approximately $1.0B.