Mario Gabelli's BIO Position Overview
Mario Gabelli (via Gamco Investors, Inc. Et Al) currently holds 26,750 shares of Bio-Rad Laboratories, Inc. (BIO) worth $7.5 M, representing 0.07% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 50 quarters.
Based on 13F filings since 2013, Mario Gabelli has maintained a long-term strategic position in BIO, representing a significant commitment to this investment thesis. Largest addition occurred in Q4 2013, adding 400 shares. Largest reduction occurred in Q4 2014, reducing 19,500 shares.
Analysis based on 13F filings available since 2013 Q2
Mario Gabelli's Bio-Rad Laboratories (BIO) Holding Value Over Time
Track share changes against reported price movement
Quarterly Bio-Rad Laboratories (BIO) Trades by Mario Gabelli
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2013 | +97,001 | Add 0.00% | 97,000 | $112.20 |
| Q4 2013 | +400 | Add 0.41% | 97,400 | $123.61 |
| Q1 2014 | -2,800 | Reduce 2.87% | 94,600 | $128.12 |
| Q2 2014 | -1,400 | Reduce 1.48% | 93,200 | $119.71 |
| Q3 2014 | -3,300 | Reduce 3.54% | 89,900 | $113.40 |
| Q4 2014 | -19,500 | Reduce 21.69% | 70,400 | $120.55 |
| Q2 2015 | -1,500 | Reduce 2.13% | 68,900 | $150.61 |
| Q3 2015 | -700 | Reduce 1.02% | 68,200 | $134.31 |
| Q4 2015 | -1,200 | Reduce 1.76% | 67,000 | $138.66 |
| Q1 2016 | -500 | Reduce 0.75% | 66,500 | $136.72 |
| Q2 2016 | -3,300 | Reduce 4.96% | 63,200 | $143.02 |
| Q3 2016 | -2,088 | Reduce 3.30% | 61,112 | $163.81 |
| Q4 2016 | -2,050 | Reduce 3.35% | 59,062 | $182.28 |
| Q1 2017 | -3,900 | Reduce 6.60% | 55,162 | $199.34 |
| Q2 2017 | -600 | Reduce 1.09% | 54,562 | $226.31 |
| Q3 2017 | -2,400 | Reduce 4.40% | 52,162 | $222.21 |
| Q4 2017 | -5,400 | Reduce 10.35% | 46,762 | $238.68 |
| Q1 2018 | -2,650 | Reduce 5.67% | 44,112 | $250.09 |
| Q2 2018 | -2,000 | Reduce 4.53% | 42,112 | $288.54 |
| Q3 2018 | -2,300 | Reduce 5.46% | 39,812 | $313.00 |
| Q4 2018 | -590 | Reduce 1.48% | 39,222 | $232.22 |
| Q1 2019 | -500 | Reduce 1.27% | 38,722 | $305.69 |
| Q2 2019 | -4,550 | Reduce 11.75% | 34,172 | $312.60 |
| Q3 2019 | -1,150 | Reduce 3.37% | 33,022 | $332.75 |
| Q4 2019 | -1,000 | Reduce 3.03% | 32,022 | $370.03 |
| Q2 2020 | -3,262 | Reduce 10.19% | 28,760 | $451.50 |
| Q3 2020 | -70 | Reduce 0.24% | 28,690 | $515.48 |
| Q4 2020 | -950 | Reduce 3.31% | 27,740 | $582.95 |
| Q2 2021 | -50 | Reduce 0.18% | 27,690 | $644.28 |
| Q3 2021 | -130 | Reduce 0.47% | 27,560 | $745.94 |
| Q4 2021 | -100 | Reduce 0.36% | 27,460 | $755.57 |
| Q1 2022 | -100 | Reduce 0.36% | 27,360 | $563.23 |
| Q2 2022 | -100 | Reduce 0.37% | 27,260 | $495.01 |
| Q2 2023 | -85 | Reduce 0.31% | 27,175 | $379.12 |
| Q4 2023 | -200 | Reduce 0.74% | 26,975 | $322.89 |
| Q1 2024 | -225 | Reduce 0.83% | 26,750 | $345.87 |
Mario Gabelli's Bio-Rad Laboratories Investment FAQs
Mario Gabelli first purchased Bio-Rad Laboratories, Inc. (BIO) in Q2 2013, acquiring 97,000 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli has held Bio-Rad Laboratories, Inc. (BIO) for 50 quarters since Q2 2013. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli's largest addition to Bio-Rad Laboratories, Inc. (BIO) was in Q2 2013, adding 97,000 shares worth $10.88 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Mario Gabelli's firm, Gamco Investors, Inc. Et Al, owns 26,750 shares of Bio-Rad Laboratories, Inc. (BIO), valued at approximately $7.5 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, Bio-Rad Laboratories, Inc. (BIO) represents approximately 0.07% of Mario Gabelli's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli's peak holding in Bio-Rad Laboratories, Inc. (BIO) was 97,400 shares, as reported at the end of Q4 2013. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.