Ruane Cunniff now owns nearly $300 million of MSA Safety, making the stock its 10th largest holding.Ruane Cunniff L.P. reported a significant buy of MSA Safety Incorporated in its Nov. 13, 2025, SEC filing, adding 756,219 shares and increasing its stake by an estimated $134.43 million.What happenedAccording to a filing with the U.S. Securities and Exchange Commission on Nov. 13, 2025, Ruane Cunniff increased its holding in MSA Safety Incorporated (MSA +0.88%) by 756,219 shares during the third quarter. The ...