Ronald Muhlenkamp's BRK.B Position Overview
Ronald Muhlenkamp (via Muhlenkamp & Co INC) currently holds 38,411 shares of Berkshire Hathaway Inc. (BRK.B) worth $19.31 M, representing 5.19% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 35 quarters.
Based on 13F filings, Ronald Muhlenkamp has maintained a strategic position in BRK.B, demonstrating sustained confidence in this investment. Largest addition occurred in Q3 2019, adding 36,322 shares. Largest reduction occurred in Q2 2015, reducing 112,530 shares.
Analysis based on 13F filings available since 2013 Q2
Ronald Muhlenkamp's Berkshire Hathaway (BRK.B) Holding Value Over Time
Track share changes against reported price movement
Quarterly Berkshire Hathaway (BRK.B) Trades by Ronald Muhlenkamp
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | +31 | Add 0.08% | 38,411 | $502.65 |
| Q3 2025 | +29 | Add 0.08% | 38,380 | $502.75 |
| Q2 2025 | +213 | Add 0.56% | 38,351 | $485.78 |
| Q1 2025 | -34 | Reduce 0.09% | 38,138 | $532.59 |
| Q4 2024 | +48 | Add 0.13% | 38,172 | $453.28 |
| Q3 2024 | -18 | Reduce 0.05% | 38,124 | $460.26 |
| Q2 2024 | -41 | Reduce 0.11% | 38,142 | $406.80 |
| Q1 2024 | +334 | Add 0.88% | 38,183 | $420.52 |
| Q4 2023 | +289 | Add 0.77% | 37,849 | $356.66 |
| Q3 2023 | -86 | Reduce 0.23% | 37,560 | $350.30 |
| Q2 2023 | +37,647 | Add 0.00% | 37,646 | $341.00 |
| Q4 2022 | +36 | Add 0.10% | 37,430 | $308.90 |
| Q3 2022 | +200 | Add 0.54% | 37,394 | $267.02 |
| Q2 2022 | +78 | Add 0.21% | 37,194 | $273.03 |
| Q1 2022 | +145 | Add 0.39% | 37,116 | $352.92 |
| Q4 2021 | -4 | Reduce 0.01% | 36,971 | $298.99 |
| Q3 2021 | -58 | Reduce 0.16% | 36,975 | $272.94 |
| Q2 2021 | +58 | Add 0.16% | 37,033 | $277.91 |
| Q1 2021 | +56 | Add 0.15% | 36,975 | $289.09 |
| Q4 2020 | +230 | Add 0.63% | 36,919 | $231.86 |
| Q3 2020 | +285 | Add 0.78% | 36,689 | $212.95 |
| Q2 2020 | +36,405 | Add 0.00% | 36,404 | $178.50 |
| Q4 2019 | -4 | Reduce 0.01% | 36,318 | $226.50 |
| Q3 2019 | +36,322 | New Buy | 36,322 | $208.03 |
| Q2 2015 | -112,530 | Sold Out | 0 | $0.00 |
| Q1 2015 | -145 | Reduce 0.13% | 112,530 | $144.32 |
| Q4 2014 | -150 | Reduce 0.13% | 112,675 | $150.15 |
| Q3 2014 | -5,000 | Reduce 4.24% | 112,825 | $138.14 |
| Q2 2014 | +475 | Add 0.40% | 117,825 | $126.56 |
| Q1 2014 | -285 | Reduce 0.24% | 117,350 | $124.97 |
| Q4 2013 | +4,050 | Add 3.57% | 117,635 | $118.56 |
| Q3 2013 | +385 | Add 0.34% | 113,585 | $113.51 |
| Q2 2013 | +113,201 | Add 0.00% | 113,200 | $111.92 |
Ronald Muhlenkamp's Berkshire Hathaway Investment FAQs
Ronald Muhlenkamp first purchased Berkshire Hathaway Inc. (BRK.B) in Q2 2013, acquiring 113,200 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Ronald Muhlenkamp has held Berkshire Hathaway Inc. (BRK.B) for 35 quarters since Q2 2013.
Ronald Muhlenkamp's largest addition to Berkshire Hathaway Inc. (BRK.B) was in Q2 2013, adding 113,200 shares worth $12.67 M.
According to the latest 13F filing for Q4 2025, Ronald Muhlenkamp's firm, Muhlenkamp & Co INC, owns 38,411 shares of Berkshire Hathaway Inc. (BRK.B), valued at approximately $19.31 M.
As of the Q4 2025 filing, Berkshire Hathaway Inc. (BRK.B) represents approximately 5.19% of Ronald Muhlenkamp's publicly disclosed stock portfolio, making it one of their key holdings.
Ronald Muhlenkamp's peak holding in Berkshire Hathaway Inc. (BRK.B) was 117,825 shares, as reported at the end of Q2 2014.