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Last updated Mar 8, 2026
Mairs & Power runs Mairs & Power Inc, a multi-strategy investment firm tracked here via SEC 13F filings. As of the Q4 2025 13F filing, the disclosed long-equity portfolio is valued at $10.4B across 223 positions. The largest holdings are MICROSOFT CORP, NVIDIA CORPORATION, and AMAZON COM INC (MICROSOFT CORP alone is 8.9% of the book).
New positions opened in the latest quarter include BENTLEY SYS INC, BERKSHIRE HATHAWAY INC DEL, and INTUITIVE SURGICAL INC. Recently exited names: ALLETE INC, BERKSHIRE HATHAWAY INC DEL, and CARRIER GLOBAL CORPORATION.
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