WOODSTOCK CORP

Position in IDXX — Idexx Laboratories Inc /De

CIK 1008877 BOSTON, MA

Position in IDXX

as of Jun 30, 2026 · filed Jul 13, 2026 Compact

Position Value

$12,420,298

-$872,895 QoQ

Shares Held

23,593

-0.3% QoQ

Ownership

0.030%

of shares outstanding

% of Portfolio

1.11%

of 13F equity value

Holder Rank

#258

of 1,286 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 99% Shared 0% None 1%

Healthcare · as of Jun 30, 2026

WOODSTOCK CORP holds $19,649,909 across 2 Diagnostics & Research names. IDXX ranks #1 (63.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)	Open
1	IDXX	Idexx Laboratories Inc /De This page	23,593	$12,420,298
2	TMO	Thermo Fisher Scientific Inc.	14,420	$7,229,611

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$12,420,298	23,593	-0.3%	Shares	Sole	2026-07-13
2026-03-31	$13,293,193	23,658	-2.1%	Shares	Sole	2026-04-08
2025-12-31	$16,350,377	24,168	-0.2%	Shares	Sole	2026-01-14
2025-09-30	$15,475,832	24,223	-0.6%	Shares	Sole	2025-10-07
2025-06-30	$13,074,896	24,378	-0.6%	Shares	Sole	2025-07-09
2025-03-31	$10,304,313	24,537	-2.9%	Shares	Sole	2025-04-09
2024-12-31	$10,451,763	25,280	-1.9%	Shares	Sole	2025-01-15
2024-09-30	$13,017,498	25,766	-5.7%	Shares	Sole	2024-10-11
2024-06-30	$13,312,252	27,324	+0.2%	Shares	Sole	2024-07-08
2024-03-31	$14,726,050	27,274	+1.1%	Shares	Sole	2024-04-09
2023-12-31	$14,970,808	26,972	+0.1%	Shares	Sole	2024-01-08
2023-09-30	$11,780,053	26,940	-0.7%	Shares	Sole	2023-10-10
2023-06-30	$13,619,975	27,119	-3.5%	Shares	Sole	2023-07-07
2023-03-31	$14,060,749	28,117	-0.0%	Shares	Sole	2023-04-06
2022-12-31	$11,475,506	28,129	-5.6%	Shares	Sole	2023-01-10
2022-09-30	$9,704,604	29,787	-2.0%	Shares	Sole	2022-10-11
2022-06-30	$10,655,177	30,380	+0.8%	Shares	Sole	2022-07-11
2022-03-31	$16,482,917	30,130	-11.6%	Shares	Sole	2022-04-07
2021-12-31	$22,448,876	34,093	-2.3%	Shares	Sole	2022-01-07
2021-09-30	$21,692,493	34,881	-1.4%	Shares	Sole	2021-10-05
2021-06-30	$22,341,712	35,376	-2.8%	Shares	Sole	2021-07-06
2021-03-31	$17,812,841	36,404	-7.7%	Shares	Sole	2021-04-05
2020-12-31	$19,708,374	39,427	-0.8%	Shares	Sole	2021-01-06
2020-09-30	$15,630,446	39,761	-4.4%	Shares	Sole	2020-10-02
2020-06-30	$13,730,033	41,586	-0.6%	Shares	Sole	2020-07-07
2020-03-31	$10,130,476	41,820	—	Shares	Sole	2020-04-03
No filing history on record for this holder in this stock.