Round Rock Advisors LLC Has $1.10 Million Position in NPK International Inc. $NPKI

Round Rock Advisors LLC increased its holdings in shares of NPK International Inc. (NYSE:NPKI – Free Report) by 85.9% during the 4th quarter, according to the company in its most recent 13F filing with the SEC. The institutional investor owned 92,114 shares of the company’s stock after acquiring an additional 42,564 shares during the period. […]