WAYCROSS PARTNERS, LLC IDXX — IDEXX LABS INC

Ownership history in WAYCROSS PARTNERS, LLC  ·  4 quarters on record

AI Ownership Summary

WAYCROSS PARTNERS, LLC reported IDEXX LABS INC (IDXX) in 4 quarterly 13F filings from 2024 Q4 through 2025 Q3. Peak portfolio weight reached 2.39% in 2025 Q3. The latest visible filing shows IDXX at 2.39% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this IDXX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was WAYCROSS PARTNERS, LLC's position in IDEXX LABS INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q3

IDXX was reported at 2.39% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
2.39% in 2025 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q4 to 2025 Q3

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

IDXX stock page WAYCROSS PARTNERS, LLC fund profile WAYCROSS PARTNERS, LLC full holdings
How WAYCROSS PARTNERS, LLC held IDXX — position size vs. price
% of Fund (quarterly)    IDXX price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 4 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q3 ADDED — — — 43,471 +961 +2.3% 2.39% $27.8M 2025-11-07 $708.45
2025 Q2 ADDED — — — 42,510 +1,557 +3.8% 2.15% $22.8M 2025-07-15 $526.66
2025 Q1 ADDED — — — 40,953 +8,515 +26.3% 1.93% $17.2M 2025-05-09 $491.70
2024 Q4 INITIATED — — — 32,438 — — 1.74% $13.4M 2025-01-31 $422.05

🏢 Other funds also holding IDXX

As of 2026 Q1 — sorted by position size

Manitou Investment Management Ltd. 3Y 7Y 7.73% BOURNE LENT ASSET MANAGEMENT INC 3Y 7Y 6.43% Haven Capital Group, Inc. 6.33% Seilern Investment Management Ltd 5.42% PERKINS CAPITAL MANAGEMENT INC 3Y 7Y 5.11% Westwind Capital 3Y 7Y 4.01% HARVEY INVESTMENT CO LLC 3Y 7Y 3.09% MOGY JOEL R INVESTMENT COUNSEL INC 3Y 7Y 3.01% MONTRUSCO BOLTON INVESTMENTS INC. 3Y 7Y 2.83% CARDEROCK CAPITAL MANAGEMENT INC 3Y 7Y 2.29%

FAQ About WAYCROSS PARTNERS, LLC and IDXX

These are the practical questions this page is built to answer before you even open the full history table.

How long has WAYCROSS PARTNERS, LLC reported owning IDXX?

WAYCROSS PARTNERS, LLC reported IDXX across 4 quarterly 13F filings, from 2024 Q4 through 2025 Q3.

What was the largest reported IDXX position in WAYCROSS PARTNERS, LLC's portfolio?

The largest reported portfolio weight for IDXX was 2.39% in 2025 Q3.

What is the latest reported IDXX position on this page?

The most recent filing on this page is 2025 Q3, when WAYCROSS PARTNERS, LLC reported 43,471 shares, equal to 2.39% of portfolio, with an estimated market value of $27.8M.

What does the chart on this IDXX ownership page compare?

The chart compares WAYCROSS PARTNERS, LLC's quarterly IDXX portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did WAYCROSS PARTNERS, LLC time their IDXX position?

Based on 13F filing dates vs. subsequent IDXX price moves, WAYCROSS PARTNERS, LLC correctly timed 3 out of 3 reported position changes (100%). The annualised alpha on IDXX relative to SPY over the holding period was +68.6%.

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