Clark & Stuart, Inc IDXX — IDEXX LABS INC

Ownership history in Clark & Stuart, Inc  ·  6 quarters on record

AI Ownership Summary

Clark & Stuart, Inc reported IDEXX LABS INC (IDXX) in 6 quarterly 13F filings from 2024 Q4 through 2026 Q1. Peak portfolio weight reached 0.34% in 2025 Q3. The latest visible filing shows IDXX at 0.24% 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 Clark & Stuart, Inc'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
2026 Q1

IDXX was reported at 0.24% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.34% 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 2026 Q1

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 Clark & Stuart, Inc fund profile Clark & Stuart, Inc full holdings
How Clark & Stuart, Inc 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 6 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 UNCHANGED — — — 644 — 0% 0.24% $362K 2026-04-13 $574.00
2025 Q4 REDUCED 14.6% -16.9% ✅ 644 -110 -14.6% 0.30% $436K 2026-01-07 $714.55
2025 Q3 UNCHANGED — — — 754 — 0% 0.34% $482K 2025-10-15 $639.15
2025 Q2 UNCHANGED — — — 754 — 0% 0.30% $405K 2025-07-23 $540.68
2025 Q1 UNCHANGED — — — 754 — 0% 0.23% $317K 2025-04-21 $406.65
2024 Q4 INITIATED — — — 754 — — 0.23% $312K 2025-01-13 $422.62

🏢 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% CARDEROCK CAPITAL MANAGEMENT INC 3Y 7Y 2.29% Legal Advantage Investments, Inc. 3Y 1.85%

FAQ About Clark & Stuart, Inc and IDXX

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

How long has Clark & Stuart, Inc reported owning IDXX?

Clark & Stuart, Inc reported IDXX across 6 quarterly 13F filings, from 2024 Q4 through 2026 Q1.

What was the largest reported IDXX position in Clark & Stuart, Inc's portfolio?

The largest reported portfolio weight for IDXX was 0.34% in 2025 Q3.

What is the latest reported IDXX position on this page?

The most recent filing on this page is 2026 Q1, when Clark & Stuart, Inc reported 644 shares, equal to 0.24% of portfolio, with an estimated market value of $362K.

What does the chart on this IDXX ownership page compare?

The chart compares Clark & Stuart, Inc'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.

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