Marble Harbor Investment Counsel Reduces IDEXX Laboratories Stake

Hedge fund decreases position in veterinary diagnostics company by 5.8% in Q3

Published on Feb. 21, 2026

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Marble Harbor Investment Counsel LLC, a Boston-based investment management firm, decreased its position in IDEXX Laboratories, Inc. (NASDAQ:IDXX) by 5.8% in the third quarter of 2025, according to a recent 13F filing. The firm now owns 36,655 shares of the veterinary diagnostics company's stock, valued at $23.4 million.

Why it matters

IDEXX Laboratories is a leading provider of diagnostic instruments, consumables, and software for the animal health market. The company's stock has been a strong performer, with shares up over 100% in the past year. Marble Harbor's reduction in its IDEXX position may signal a shift in investor sentiment or portfolio rebalancing, though the firm still maintains a sizable stake in the company.

The details

According to the 13F filing, Marble Harbor Investment Counsel sold 2,263 shares of IDEXX Laboratories during the third quarter. The firm now holds a total of 36,655 shares, making up 2.5% of its investment portfolio. IDEXX Laboratories is the 11th largest position for Marble Harbor.

  • Marble Harbor Investment Counsel decreased its IDEXX Laboratories position in the third quarter of 2025.

The players

Marble Harbor Investment Counsel LLC

A Boston-based investment management firm that has decreased its position in IDEXX Laboratories.

IDEXX Laboratories, Inc.

A leading provider of diagnostic instruments, consumables, and software for the animal health market.

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The takeaway

Marble Harbor's reduction in its IDEXX Laboratories stake, while still maintaining a sizable position, could signal a shift in investor sentiment around the stock or portfolio rebalancing. However, IDEXX remains a top-performing company in the veterinary diagnostics space.