Vanguard Group Increases Stake in MKS Inc to 11.54%

The Vanguard Group has filed an amendment to its Schedule 13G, disclosing an increased ownership of 11.54% in MKS Inc. The filing, dated October 31, 2025, reveals that Vanguard now holds 7,752,097 shares of MKS Inc's common stock, up from 7,456,617 shares previously. This represents a 3.96% increase in shares and a 50.37% increase in the value of the holdings, now totaling $1,114,053,859.87. The shares are held on behalf of Vanguard's clients, including investment companies and managed accounts, with no single client owning more than 5% of the shares. The filing certifies that the shares were acquired in the ordinary course of business and not for the purpose of influencing control of the issuer.