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GW&K Investment Management, LLC

Position in BIO — Bio-Rad Laboratories, Inc.

CIK 1082917 BOSTON, MA

Position in BIO

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$48,699,855
-$4,954,522 QoQ
Shares Held
174,708
-1.3% QoQ
Ownership
0.653%
of shares outstanding
% of Portfolio
0.44%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 92.28426860819195.ToString("F0")% Shared 7.673947386496326.ToString("F0")% None 0.04178400531172013.ToString("F0")%

Common Shares in BIO Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Mar 31, 2026

GW&K Investment Management, LLC holds $400,658,650 across 19 Medical Devices names. BIO ranks #3 (12.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 BIO
Bio-Rad Laboratories, Inc.
This page
174,708 $48,699,855

All Filings in BIO

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $48,699,855 174,708
2025-12-31 $53,654,377 177,083
2025-09-30 $51,548,299 183,845
2025-06-30 $35,525,440 147,213
2025-03-31 $35,043,168 143,879
2024-12-31 $47,779,808 145,444
2024-09-30 $48,591,721 145,232
2024-06-30 $38,465,085 140,841
2024-03-31 $47,690,630 137,886
2023-12-31 $44,491,981 137,793
2023-09-30 $51,872,732 144,714
2023-06-30 $54,941,691 144,919
2023-03-31 $57,469,466 119,973
2022-12-31 $49,721,260 118,246
2022-09-30 $35,584,544 85,306
2022-06-30 $36,065,205 72,859
2022-03-31 $46,022,086 81,711
2021-12-31 $79,891,704 105,737
2021-09-30 $88,580,816 118,749
2021-06-30 $77,278,074 119,943
2021-03-31 $67,468,313 118,123
2020-12-31 $53,371,071 91,555
2020-09-30 $47,173,351 91,517
2020-06-30 $43,766,988 96,939
2020-03-31 $34,870,202 99,470