Bio-Rad Laboratories Shares Bought by GW&K Investment Management

Institutional investor increases stake in medical research company

Mar. 5, 2026 at 11:57am

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GW&K Investment Management LLC raised its holdings in Bio-Rad Laboratories, Inc. (NYSE:BIO) by 24.9% during the 3rd quarter, according to its most recent disclosure with the Securities and Exchange Commission (SEC). The institutional investor now owns 183,845 shares of the medical research company's stock, worth $51,550,000.

Why it matters

Bio-Rad Laboratories is a major player in the medical research industry, providing instruments, reagents and other products used in various scientific applications. The increase in GW&K Investment Management's stake suggests the firm sees long-term growth potential in the company.

The details

GW&K Investment Management LLC purchased an additional 36,632 shares of Bio-Rad Laboratories during the third quarter, bringing its total ownership to 183,845 shares or 0.68% of the company. This follows other recent activity, including First Eagle Investment Management LLC increasing its stake by 60.7% and Ilex Capital Partners UK LLP acquiring 120,885 shares.

  • GW&K Investment Management LLC increased its holdings in Bio-Rad Laboratories during the 3rd quarter of 2026.

The players

GW&K Investment Management LLC

An institutional investment management firm that raised its stake in Bio-Rad Laboratories.

Bio-Rad Laboratories, Inc.

A global provider of life science research and clinical diagnostic products.

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The takeaway

The increased investment by GW&K Investment Management in Bio-Rad Laboratories suggests the firm sees strong growth potential in the medical research company, which provides critical products and instruments used across the industry.