BIO Stock Ownership Activity

BIO-RAD LABORATORIES-A 13F holders

2 value investing gurus have made changes to the BIO-RAD LABORATORIES-A (BIO) position according to the gurus' latest SEC quarterly report(s). The number of BIO shares has been increased by 1, decreased by 1 super investor(s).

Which gurus or hedge funds are buying BIO now?

According to the latest SEC filing(s) BIO-RAD LABORATORIES-A (BIO) has been bought by Parnassus Investments - Parnassus Endeavor Fund (added shares +0.64%).

To see more about who is investing in BIO-RAD LABORATORIES-A (BIO), please go to the BIO ownership page.

History
Name
Company
%
Activity
Share
Change
% change to
Portfolio
% of
Portfolio
2026 Q1 (2 results)
Parnassus Investments
Parnassus Endeavor Fund
+0.64%
+1,598
+0.01%
1.52%
John W. Rogers Jr.
Ariel Appreciation Fund
-3.41%
-2,856
-0.09%
2.58%
Current price: $294.32 5.59% AVG reported price*: $278.75
2025 Q4 (3 results)
John W. Rogers Jr.
Ariel Appreciation Fund
-6.77%
-6,086
-0.21%
2.85%
Mason Hawkins
Longleaf Partners
-16.90%
-28,666
-0.87%
4.28%
Parnassus Investments
Parnassus Endeavor Fund
-20.11%
-63,222
-0.40%
1.60%
Current price: $294.32 2.86% AVG reported price*: $302.99
2025 Q3 (3 results)
Parnassus Investments
Parnassus Endeavor Fund
-0.62%
-1,963
-0.01%
1.87%
John W. Rogers Jr.
Ariel Appreciation Fund
-3.61%
-3,363
-0.11%
2.81%
Mason Hawkins
Longleaf Partners
-22.80%
-50,088
-1.46%
4.95%
Current price: $294.32 4.97% AVG reported price*: $280.39
2025 Q2 (2 results)
John W. Rogers Jr.
Ariel Appreciation Fund
+6.64%
+5,801
+0.17%
2.65%
Parnassus Investments
Parnassus Endeavor Fund
-0.34%
-1,075
-0.01%
1.68%
Current price: $294.32 21.96% AVG reported price*: $241.32
2025 Q1 (3 results)
John W. Rogers Jr.
Ariel Appreciation Fund
+14.83%
+11,287
+0.32%
2.50%
Mason Hawkins
Longleaf Partners
+11.52%
+22,698
+0.60%
5.77%
Parnassus Investments
Parnassus Endeavor Fund
+2.16%
+6,704
+0.04%
1.73%
Current price: $294.32 20.84% AVG reported price*: $243.56
2024 Q4 (1 result)
John W. Rogers Jr.
Ariel Appreciation Fund
+14.05%
+9,379
+0.32%
2.62%
Current price: $294.32 10.41% Reported price*: $328.51
2024 Q3 (2 results)
John W. Rogers Jr.
Ariel Appreciation Fund
+29.05%
+15,025
+0.50%
2.21%
Nathaniel Simons
Meritage Group
-100.00%
-1,180
-0.01%
0.00%
Current price: $294.32 12.03% AVG reported price*: $334.58
2024 Q2 (3 results)
Nathaniel Simons
Meritage Group
+56.08%
+424
+0.00%
0.00%
John W. Rogers Jr.
Ariel Appreciation Fund
+51.36%
+17,548
+0.50%
1.47%
Parnassus Investments
Parnassus Endeavor Fund
+30.67%
+72,942
+0.41%
1.73%
Current price: $294.32 7.77% AVG reported price*: $273.11
2024 Q1 (2 results)
John W. Rogers Jr.
Ariel Appreciation Fund
buy
+34,165
+1.10%
1.10%
Nathaniel Simons
Meritage Group
-7.47%
-61
-0.00%
0.01%
Current price: $294.32 14.83% AVG reported price*: $345.55
2023 Q4 (3 results)
Nathaniel Simons
Meritage Group
buy
+817
+0.01%
0.01%
Mason Hawkins
Longleaf Partners
+14.53%
+24,982
+0.68%
5.33%
Parnassus Investments
Parnassus Endeavor Fund
+7.70%
+16,999
+0.11%
1.56%
Current price: $294.32 8.87% AVG reported price*: $322.97
2023 Q3 (3 results)
Parnassus Investments
Parnassus Endeavor Fund
buy
+220,791
+1.74%
1.74%
Mason Hawkins
Longleaf Partners
buy
+171,987
+5.02%
5.02%
Nathaniel Simons
Meritage Group
-100.00%
-753
-0.01%
0.00%
Current price: $294.32 17.89% AVG reported price*: $358.45
2023 Q2 (1 result)
Nathaniel Simons
Meritage Group
buy
+753
+0.01%
0.00%
Current price: $294.32 22.24% Reported price*: $378.49
2022 Q3 (1 result)
Nathaniel Simons
Meritage Group
-100.00%
-469
-0.01%
0.00%
Current price: $294.32 40.50% Reported price*: $494.67
2022 Q2 (1 result)
Nathaniel Simons
Meritage Group
-40.86%
-324
-0.00%
0.00%
Current price: $294.32 40.50% Reported price*: $494.67
2022 Q1 (1 result)
Nathaniel Simons
Meritage Group
-22.41%
-229
-0.00%
0.01%
Current price: $294.32 47.79% Reported price*: $563.68
2021 Q4 (1 result)
Nathaniel Simons
Meritage Group
+124.12%
+566
+0.01%
0.02%
Current price: $294.32 61.04% Reported price*: $755.38
2021 Q3 (1 result)
Nathaniel Simons
Meritage Group
-47.65%
-415
-0.01%
0.01%
Current price: $294.32 60.53% Reported price*: $745.61
2021 Q2 (1 result)
Nathaniel Simons
Meritage Group
+19.48%
+142
+0.00%
0.01%
Current price: $294.32 54.30% Reported price*: $644.09
2021 Q1 (1 result)
Nathaniel Simons
Meritage Group
+8.48%
+57
+0.00%
0.01%
Current price: $294.32 48.42% Reported price*: $570.64
2020 Q4 (1 result)
Nathaniel Simons
Meritage Group
-11.70%
-89
-0.00%
0.01%
Current price: $294.32 49.55% Reported price*: $583.33
2020 Q3 (1 result)
Nathaniel Simons
Meritage Group
buy
+761
+0.01%
0.01%
Current price: $294.32 42.86% Reported price*: $515.11
37 of 37

Shares, change to shares, sold shares - split-adjusted.

Reported price - this doesn't represent the actual buy or sell price.
It is the split-adjusted price of the security as of the last day of the reported period.

Value or Price - If the security is completely sold out, we show the reported value (or price) prior to the actual period.