Henry Ellenbogen’s Idexx Laboratories IDXX Stock Holding History

Henry Ellenbogen’s Portfolio IDXX Stock Details IDXX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q2	–	Sell	-364,757	Closed	-$153M	–	50
2025 Q1	$153M	Buy	+364,757	New	+$158M	1.37%	28
2023 Q1	–	Sell	-208,030	Closed	-$84.9M	–	52
2022 Q4	$84.9M	Buy	208,030 +316	+0.2%	+$123K	0.88%	34
2022 Q3	$67.7M	Buy	207,714 +94,548	+84%	+$34.7M	0.74%	34
2022 Q2	$39.7M	Buy	+113,166	New	+$46.1M	0.46%	44
2021 Q4	–	Sell	-25,402	Closed	-$15.8M	–	64
2021 Q3	$15.8M	Sell	25,402 -93,859	-79%	-$63.1M	0.12%	59
2021 Q2	$75.3M	Sell	119,261 -3,689	-3%	-$2.04M	0.56%	46
2021 Q1	$60.2M	Sell	122,950 -76,996	-39%	-$38.6M	0.51%	42
2020 Q4	$99.9M	Sell	199,946 -183,112	-48%	-$81.9M	0.89%	37
2020 Q3	$151M	Sell	383,058 -72,776	-16%	-$26.9M	1.66%	24
2020 Q2	$150M	Buy	455,834 +228,294	+100%	+$66.1M	1.87%	25
2020 Q1	$55.1M	Buy	+227,540	New	+$59.4M	1.12%	18

Other funds holding IDXX

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Fundsmith LLP London, United Kingdom $13.6B AUM 7.6% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

Polen Capital Management Boca Raton, Florida $11.6B AUM 8.03% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Henry Ellenbogen's IDXX Position: Q2 2025 in Review

Henry Ellenbogen sold out of Idexx Laboratories (IDXX) in Q2 2025, closing a stake of 364,757 shares — an estimated $153M sold.

Henry Ellenbogen first reported a position in IDXX in Q1 2020 and held it in 11 quarters. The position peaked at $153M in Q1 2025. 1,235 funds tracked by Wall St. Rank hold IDXX as of Q2 2025.

Henry Ellenbogen reported no remaining Idexx Laboratories position as of Q2 2025 after selling out during the quarter.
Henry Ellenbogen sold 364,757 Idexx Laboratories shares in Q2 2025, an estimated $153M.
Henry Ellenbogen first reported a position in Idexx Laboratories in Q1 2020 and held it in 11 quarters.
Henry Ellenbogen's Idexx Laboratories position peaked at $153M in Q1 2025.
1,235 funds tracked by Wall St. Rank held Idexx Laboratories as of Q2 2025.

Based on Durable Capital Partners's 13F filing for Q2 2025, filed 14 Aug 2025.