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GAMCO INVESTORS, INC. ET AL

Position in BIO — Bio-Rad Laboratories, Inc.

CIK 807249 GREENWICH, CT

Position in BIO

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$7,854,067
+$397,505 QoQ
Shares Held
26,750
0.0% QoQ
Ownership
0.100%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
#77
of 397 holders
Holding Since
Mar 2020
22 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in BIO Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

GAMCO INVESTORS, INC. ET AL holds $88,721,847 across 19 Medical Devices names. BIO ranks #4 (8.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 BIO
Bio-Rad Laboratories, Inc.
This page
26,750 $7,854,067

All Filings in BIO

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24 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $7,854,067 26,750
2026-03-31 $7,456,562 26,750
2025-12-31 $8,104,982 26,750
2025-09-30 $7,500,432 26,750
2025-06-30 $6,455,310 26,750
2025-03-31 $6,515,230 26,750
2024-12-31 $8,787,642 26,750
2024-09-30 $8,950,015 26,750
2024-06-30 $7,305,692 26,750
2024-03-31 $9,252,022 26,750
2023-12-31 $8,709,957 26,975
2023-09-30 $9,740,878 27,175
2023-03-31 $13,058,085 27,260
2022-06-30 $13,493,700 27,260
2021-12-31 BIO-B 310
2021-12-31 $20,747,952 27,460
2021-09-30 BIO-B $235,572 310
2021-09-30 $20,558,382 27,560
2021-06-30 $17,840,390 27,690
2021-03-31 $15,844,255 27,740
2020-12-31 $16,170,755 27,740
2020-09-30 $14,788,547 28,690
2020-06-30 $12,984,852 28,760
2020-03-31 $11,225,632 32,022