Form 13-F position report

BIO-RAD LABS CL A

Reported by RK Asset Management LLC

BIO CUSIP 090572207 Manager CIK 0001595686

Reported 14,626 shares, down 911 (5.9%) from the prior quarter.

Reported value -7.6%; share count -5.9% vs. the prior quarter.

Reduced
% of reported 13F value 3.93% This manager · Q4 2024
Shares 14,626 Quarter-end amount reported
Reported value $4,805,000 Fair value at quarter end
Consecutive quarters held 2 Through Q4 2024

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Reported position value by quarter
Date Holding Value
2024-09-30 5198000
2024-12-31 4805000
2025-03-31 3505000
2025-06-30 3501000
2025-09-30 4070000
2025-12-31 4415000

Quarterly position history

How this manager's reported quarter-end position changed over time.

6 quarters
Quarterly reported position history for BIO-RAD LABS CL A held by RK Asset Management LLC.
Quarter Activity Shares Change % of reported 13F Reported value Filed Source filing
Q4 2025 Added 14,573 +71 (0.5%) 4.17% $4,415,000 2026-01-05
Q3 2025 Unchanged 14,502 0 (0.0%) 3.7% $4,070,000 2025-10-14
Q2 2025 Added 14,502 +113 (0.8%) 3.37% $3,501,000 2025-07-18
Q1 2025 Reduced 14,389 -237 (-1.6%) 3.24% $3,505,000 2025-04-02
Q4 2024 Reduced 14,626 -911 (-5.9%) 3.93% $4,805,000 2025-01-03
Q3 2024 New 15,537 +15,537 (0.0%) 4.0% $5,198,000 2024-10-07

Who else reported the position

515 managers reported BIO-RAD LABS CL A for Q4 2024.

Managers reporting BIO-RAD LABS CL A in Q4 2024.
Manager Activity Shares Change % of reported 13F Reported value Tenure
BlackRock Inc Added 2,011,649 +81,748 0.01% $660,846,457 2 qtrs
VANGUARD GROUP INC Added 1,919,808 +12,168 0.01% $630,676,126 47 qtrs
Veritas Asset Management LLP Reduced 976,827 -109,652 2.99% $320,897,438 11 qtrs
DIMENSIONAL FUND ADVISORS LP Added 746,119 +91,690 0.06% $245,105,714 47 qtrs
VAN ECK ASSOCIATES CORP Reduced 723,471 -580,281 0.3% $237,667,000 3 qtrs
First Eagle Investment Management LLC Added 713,505 +505 0.52% $234,393,527 7 qtrs
STATE STREET CORPORATION Added 690,165 +54,249 < 0.01% $226,708,080 37 qtrs
EARNEST PARTNERS LLC Added 618,049 +12,500 0.91% $203,035,277 45 qtrs
ARIEL INVESTMENTS LLC Added 560,524 +181,829 1.96% $184,137,739 47 qtrs
Select Equity Group L P Reduced 460,658 -247,794 0.6% $151,330,760 7 qtrs
Premium adds each manager's conviction percentile across reporting peers.
Filing details and methodology As reported
Report period
December 31, 2024
Filed
January 03, 2025
Filing type
13F-HR
Position type
COM

Voting authority reported

Sole
14,626
Shared
0
None
0

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.