Group 1 - Madison Mid Cap Fund's Class Y returned 5.2% in Q2 2025, underperforming the Russell Midcap Index which increased by 8.5% [1] - MKS Instruments, Inc. (NASDAQ:MKSI) was highlighted as a top stock, with a one-month return of 21.09% and a 52-week gain of 17.51% [2] - MKS Instruments reported Q2 2025 revenue of $973 million, reflecting a 4% sequential increase and a 10% year-over-year growth [4] Group 2 - The top five contributors to the Madison Mid Cap Fund in Q2 2025 included MKS Instruments, benefiting from improved sentiment in the semiconductor cycle [3] - MKS Instruments had a market capitalization of $8.638 billion as of September 19, 2025, with shares closing at $128.62 [2] - MKS Instruments was held by 33 hedge fund portfolios at the end of Q2 2025, an increase from 32 in the previous quarter [4]