Ruane Cunniff's BRK.B Position Overview
Ruane Cunniff (via Ruane, Cunniff & Goldfarb L.P.) currently holds 310,388 shares of Berkshire Hathaway Inc. (BRK.B) worth $148.74 M, representing 2.47% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 52 quarters.
Based on 13F filings since 2013, Ruane Cunniff has maintained a long-term strategic position in BRK.B, representing a significant commitment to this investment thesis. Largest addition occurred in Q4 2018, adding 179,302 shares. Largest reduction occurred in Q1 2017, reducing 1.18 M shares.
Analysis based on 13F filings available since 2013 Q2
Ruane Cunniff's Berkshire Hathaway (BRK.B) Holding Value Over Time
Track share changes against reported price movement
Quarterly Berkshire Hathaway (BRK.B) Trades by Ruane Cunniff
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | -5,718 | Reduce 1.81% | 310,388 | $479.20 |
| Q4 2025 | -6,446 | Reduce 2.00% | 316,106 | $502.65 |
| Q3 2025 | -4,289 | Reduce 1.31% | 322,552 | $502.74 |
| Q2 2025 | -10,141 | Reduce 3.01% | 326,841 | $485.77 |
| Q1 2025 | -11,265 | Reduce 3.23% | 336,982 | $532.58 |
| Q4 2024 | -86,057 | Reduce 19.81% | 348,247 | $453.28 |
| Q3 2024 | -4,617 | Reduce 1.05% | 434,304 | $460.26 |
| Q2 2024 | -11,601 | Reduce 2.58% | 438,921 | $406.80 |
| Q1 2024 | -5,757 | Reduce 1.26% | 450,522 | $420.52 |
| Q4 2023 | -15,782 | Reduce 3.34% | 456,279 | $356.66 |
| Q3 2023 | -18,618 | Reduce 3.79% | 472,061 | $350.30 |
| Q2 2023 | -336 | Reduce 0.07% | 490,679 | $341.00 |
| Q1 2023 | -18,177 | Reduce 3.57% | 491,015 | $308.77 |
| Q4 2022 | -12,923 | Reduce 2.48% | 509,192 | $308.90 |
| Q3 2022 | +12,493 | Add 2.45% | 522,115 | $267.02 |
| Q2 2022 | +6,379 | Add 1.27% | 509,622 | $273.02 |
| Q1 2022 | -8,767 | Reduce 1.71% | 503,243 | $352.91 |
| Q4 2021 | +42,452 | Add 9.04% | 512,010 | $299.00 |
| Q3 2021 | -136,921 | Reduce 22.58% | 469,558 | $272.94 |
| Q2 2021 | -14,820 | Reduce 2.39% | 606,479 | $277.92 |
| Q1 2021 | -427,223 | Reduce 40.75% | 621,299 | $255.47 |
| Q4 2020 | -48,523 | Reduce 4.42% | 1.05 M | $231.87 |
| Q3 2020 | -8,855 | Reduce 0.80% | 1.1 M | $212.94 |
| Q2 2020 | -193,526 | Reduce 14.89% | 1.11 M | $178.51 |
| Q1 2020 | -136,467 | Reduce 9.50% | 1.3 M | $182.83 |
| Q4 2019 | +76,442 | Add 5.62% | 1.44 M | $226.50 |
| Q3 2019 | -12,881 | Reduce 0.94% | 1.36 M | $208.02 |
| Q2 2019 | -43,016 | Reduce 3.04% | 1.37 M | $213.17 |
| Q1 2019 | -153,732 | Reduce 9.80% | 1.42 M | $200.89 |
| Q4 2018 | +179,302 | Add 12.90% | 1.57 M | $204.18 |
| Q3 2018 | -59,498 | Reduce 4.11% | 1.39 M | $214.11 |
| Q2 2018 | +142,637 | Add 10.92% | 1.45 M | $186.65 |
| Q1 2018 | -724,836 | Reduce 35.68% | 1.31 M | $196.67 |
| Q4 2017 | -55,916 | Reduce 2.68% | 2.03 M | $198.22 |
| Q3 2017 | -119,708 | Reduce 5.42% | 2.09 M | $183.32 |
| Q2 2017 | -570,676 | Reduce 20.54% | 2.21 M | $169.37 |
| Q1 2017 | -1.18 M | Reduce 29.79% | 2.78 M | $166.68 |
| Q4 2016 | -449,731 | Reduce 10.21% | 3.96 M | $162.98 |
| Q3 2016 | -165,201 | Reduce 3.61% | 4.41 M | $144.47 |
| Q2 2016 | -166,304 | Reduce 3.51% | 4.57 M | $144.79 |
| Q1 2016 | -173,070 | Reduce 3.52% | 4.74 M | $141.88 |
| Q4 2015 | -3,448 | Reduce 0.07% | 4.91 M | $132.04 |
| Q3 2015 | +79,641 | Add 1.65% | 4.91 M | $130.40 |
| Q2 2015 | +82,058 | Add 1.73% | 4.83 M | $136.11 |
| Q1 2015 | +10,401 | Add 0.22% | 4.75 M | $144.32 |
| Q4 2014 | -174,287 | Reduce 3.54% | 4.74 M | $150.15 |
| Q3 2014 | +101,409 | Add 2.11% | 4.92 M | $138.14 |
| Q2 2014 | -22,858 | Reduce 0.47% | 4.82 M | $126.56 |
| Q1 2014 | +63,937 | Add 1.34% | 4.84 M | $124.97 |
| Q4 2013 | +91,880 | Add 1.96% | 4.77 M | $118.56 |
| Q3 2013 | +12,825 | Add 0.27% | 4.68 M | $113.51 |
| Q2 2013 | +4.67 M | Add 0.00% | 4.67 M | $111.92 |
Ruane Cunniff's Berkshire Hathaway Investment FAQs
Ruane Cunniff first purchased Berkshire Hathaway Inc. (BRK.B) in Q2 2013, acquiring 4,669,282 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Ruane Cunniff has held Berkshire Hathaway Inc. (BRK.B) for 52 quarters since Q2 2013.
Ruane Cunniff's largest addition to Berkshire Hathaway Inc. (BRK.B) was in Q2 2013, adding 4,669,282 shares worth $522.59 M.
According to the latest 13F filing for Q1 2026, Ruane Cunniff's firm, Ruane, Cunniff & Goldfarb L.P., owns 310,388 shares of Berkshire Hathaway Inc. (BRK.B), valued at approximately $148.74 M.
As of the Q1 2026 filing, Berkshire Hathaway Inc. (BRK.B) represents approximately 2.47% of Ruane Cunniff's publicly disclosed stock portfolio, making it one of their key holdings.
Ruane Cunniff's peak holding in Berkshire Hathaway Inc. (BRK.B) was 4,916,475 shares, as reported at the end of Q3 2014.