Renaissance Technologies (RenTech)'s BRK.B Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC (Rentech)) currently holds 252,188 shares of Berkshire Hathaway Inc. (BRK.B) worth $126.76 M, representing 0.20% of the portfolio. First purchased in 2013-Q3, this long-term strategic position has been held for 44 quarters.
Based on 13F filings since 2013, Renaissance Technologies (RenTech) has maintained a long-term strategic position in BRK.B, representing a significant commitment to this investment thesis. Largest addition occurred in Q2 2022, adding 1.72 M shares. Largest reduction occurred in Q3 2022, reducing 1.31 M shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Berkshire Hathaway (BRK.B) Holding Value Over Time
Track share changes against reported price movement
Quarterly Berkshire Hathaway (BRK.B) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | +249,133 | Add 8154.93% | 252,188 | $502.63 |
| Q3 2025 | -213 | Reduce 6.52% | 3,055 | $503.38 |
| Q2 2025 | +1,232 | Add 60.51% | 3,268 | $485.39 |
| Q1 2025 | -234 | Reduce 10.31% | 2,036 | $533.49 |
| Q4 2024 | -220,245 | Reduce 98.98% | 2,270 | $454.61 |
| Q3 2024 | +221,217 | Add 17042.91% | 222,515 | $460.26 |
| Q2 2024 | -188,292 | Reduce 99.32% | 1,298 | $406.95 |
| Q1 2024 | +189,590 | New Buy | 189,590 | $420.53 |
| Q2 2023 | -33,846 | Sold Out | 0 | $0.00 |
| Q1 2023 | +32,600 | Add 2616.37% | 33,846 | $0.31 |
| Q4 2022 | -478,454 | Reduce 99.74% | 1,246 | $0.31 |
| Q3 2022 | -1.31 M | Reduce 73.22% | 479,700 | $267.02 |
| Q2 2022 | +1.72 M | Add 2370.34% | 1.79 M | $273.02 |
| Q1 2022 | -868,800 | Reduce 92.30% | 72,500 | $352.91 |
| Q4 2021 | +795,583 | Add 545.98% | 941,300 | $299.00 |
| Q3 2021 | +64,517 | Add 79.45% | 145,717 | $272.94 |
| Q2 2021 | -363,700 | Reduce 81.75% | 81,200 | $277.92 |
| Q1 2021 | -158,461 | Reduce 26.26% | 444,900 | $255.47 |
| Q4 2020 | +603,361 | New Buy | 603,361 | $231.87 |
| Q3 2020 | -177,665 | Sold Out | 0 | $0.00 |
| Q2 2020 | +109,977 | Add 162.48% | 177,665 | $178.51 |
| Q1 2020 | +67,688 | New Buy | 67,688 | $182.82 |
| Q4 2019 | -82,900 | Sold Out | 0 | $0.00 |
| Q3 2019 | -852,200 | Reduce 91.13% | 82,900 | $208.02 |
| Q2 2019 | -401,800 | Reduce 30.05% | 935,100 | $213.17 |
| Q1 2019 | +1.34 M | New Buy | 1.34 M | $200.89 |
| Q4 2017 | -76,200 | Sold Out | 0 | $0.00 |
| Q3 2017 | -36,200 | Reduce 32.21% | 76,200 | $183.32 |
| Q2 2017 | -239,000 | Reduce 68.01% | 112,400 | $169.37 |
| Q1 2017 | -93,300 | Reduce 20.98% | 351,400 | $166.68 |
| Q4 2016 | +143,800 | Add 47.79% | 444,700 | $162.98 |
| Q3 2016 | +293,900 | Add 4198.57% | 300,900 | $144.47 |
| Q2 2016 | -1,700 | Reduce 19.54% | 7,000 | $144.86 |
| Q1 2016 | -256,300 | Reduce 96.72% | 8,700 | $141.84 |
| Q4 2015 | -241,800 | Reduce 47.71% | 265,000 | $132.04 |
| Q3 2015 | -504,700 | Reduce 49.90% | 506,800 | $130.40 |
| Q2 2015 | -374,300 | Reduce 27.01% | 1.01 M | $136.11 |
| Q1 2015 | +1.33 M | Add 2339.79% | 1.39 M | $144.32 |
| Q4 2014 | +56,800 | New Buy | 56,800 | $150.16 |
| Q3 2014 | -422,400 | Sold Out | 0 | $0.00 |
| Q2 2014 | -198,600 | Reduce 31.98% | 422,400 | $126.56 |
| Q1 2014 | +31,900 | Add 5.42% | 621,000 | $124.97 |
| Q4 2013 | +256,100 | Add 76.91% | 589,100 | $118.56 |
| Q3 2013 | +333,000 | New Buy | 333,000 | $113.51 |
Renaissance Technologies (RenTech)'s Berkshire Hathaway Investment FAQs
Renaissance Technologies (RenTech) first purchased Berkshire Hathaway Inc. (BRK.B) in Q3 2013, acquiring 333,000 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held Berkshire Hathaway Inc. (BRK.B) for 44 quarters since Q3 2013.
Renaissance Technologies (RenTech)'s largest addition to Berkshire Hathaway Inc. (BRK.B) was in Q2 2022, adding 1,791,000 shares worth $488.98 M.
According to the latest 13F filing for Q4 2025, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC (Rentech), owns 252,188 shares of Berkshire Hathaway Inc. (BRK.B), valued at approximately $126.76 M.
As of the Q4 2025 filing, Berkshire Hathaway Inc. (BRK.B) represents approximately 0.20% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Berkshire Hathaway Inc. (BRK.B) was 1,791,000 shares, as reported at the end of Q2 2022.