Materion Corp. (MTRN) Bounced Back in Q3
Heartland Advisors, an investment management company, released its “Heartland Value Plus Fund” third-quarter 2025 investor letter. A copy of the letter can be downloaded here. The third quarter proved to be robust for small caps, signaling improved demand dynamics. The Russell 2000® Index was up 12.39% in the quarter, outperforming the S&P 500 Index, which…