Castleark Management’s Gentex GNTX Stock Holding History

Castleark Management’s Portfolio GNTX Stock Details GNTX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$188K	Hold	8,620	–	–	0.01%	276
2025 Q4	$201K	Hold	8,620	–	–	0.01%	275
2025 Q3	$244K	Hold	8,620	–	–	0.01%	257
2025 Q2	$190K	Hold	8,620	–	–	0.01%	252
2025 Q1	$201K	Hold	8,620	–	–	0.01%	256
2024 Q4	$248K	Hold	8,620	–	–	0.01%	255
2024 Q3	$256K	Sell	8,620 -91,800	-91%	-$2.85M	0.01%	231
2024 Q2	$3.39M	Sell	100,420 -5,860	-6%	-$202K	0.14%	147
2024 Q1	$3.84M	Sell	106,280 -12,850	-11%	-$445K	0.16%	143
2023 Q4	$3.89M	Sell	119,130 -150	-0.1%	-$4.63K	0.17%	141
2023 Q3	$3.88M	Buy	119,280 +110,660	+1,284%	+$3.55M	0.2%	124
2023 Q2	$252K	Hold	8,620	–	–	0.01%	239
2023 Q1	$242K	Hold	8,620	–	–	0.01%	241
2022 Q4	$235K	Hold	8,620	–	–	0.01%	253
2022 Q3	$206K	Hold	8,620	–	–	0.01%	254
2022 Q2	$241K	Hold	8,620	–	–	0.01%	256
2022 Q1	$251K	Hold	8,620	–	–	0.01%	280
2021 Q4	$300K	Hold	8,620	–	–	0.01%	295
2021 Q3	$284K	Hold	8,620	–	–	0.01%	284
2021 Q2	$285K	Hold	8,620	–	–	0.01%	289
2021 Q1	$307K	Sell	8,620 -275,353	-97%	-$9.78M	0.01%	280
2020 Q4	$9.63M	Sell	283,973 -47,865	-14%	-$1.48M	0.36%	68
2020 Q3	$8.54M	Buy	331,838 +323,218	+3,750%	+$8.59M	0.33%	87
2020 Q2	$222K	Hold	8,620	–	–	0.01%	297
2020 Q1	$191K	Hold	8,620	–	–	0.01%	280
2019 Q4	$250K	Hold	8,620	–	–	0.01%	308
2019 Q3	$237K	Sell	8,620 -90,340	-91%	-$2.39M	0.01%	317
2019 Q2	$2.44M	Sell	98,960 -6,340	-6%	-$144K	0.09%	204
2019 Q1	$2.18M	Hold	105,300	–	–	0.08%	222
2018 Q4	$2.13M	Hold	105,300	–	–	0.09%	216
2018 Q3	$2.26M	Hold	105,300	–	–	0.06%	251
2018 Q2	$2.42M	Hold	105,300	–	–	0.07%	236
2018 Q1	$2.42M	Hold	105,300	–	–	0.08%	242
2017 Q4	$2.21M	Hold	105,300	–	–	0.07%	257
2017 Q3	$2.08M	Hold	105,300	–	–	0.07%	255
2017 Q2	$2M	Sell	105,300 -9,200	-8%	-$179K	0.07%	253
2017 Q1	$2.44M	Hold	114,500	–	–	0.08%	260
2016 Q4	$2.25M	Hold	114,500	–	–	0.07%	254
2016 Q3	$2.01M	Hold	114,500	–	–	0.06%	261
2016 Q2	$1.77M	Hold	114,500	–	–	0.06%	268
2016 Q1	$1.8M	Hold	114,500	–	–	0.06%	257
2015 Q4	$1.83M	Sell	114,500 -14,920	-12%	-$241K	0.06%	264
2015 Q3	$2.01M	Hold	129,420	–	–	0.06%	249
2015 Q2	$2.13M	Hold	129,420	–	–	0.06%	274
2015 Q1	$2.37M	Hold	129,420	–	–	0.06%	260
2014 Q4	$2.34M	Sell	129,420 -2,700	-2%	-$44.9K	0.06%	226
2014 Q3	$2.08M	Hold	132,120	–	–	0.06%	220
2014 Q2	$1.92M	Hold	132,120	–	–	0.05%	221
2014 Q1	$2.08M	Hold	132,120	–	–	0.06%	220
2013 Q4	$2.18M	Buy	132,120 +2,700	+2%	+$39.6K	0.06%	211
2013 Q3	$1.73M	Sell	129,420 -23,300	-15%	-$276K	0.05%	226
2013 Q2	$1.76M	Buy	+152,720	New	+$1.72M	0.06%	203

Other funds holding GNTX

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Ariel Investments Chicago, Illinois $8.93B AUM 29.58% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Bank of Montreal Toronto, Ontario, Canada $269B AUM 31.4% 1-Year Est. Return

Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Castleark Management's GNTX Position: Q1 2026 in Review

Castleark Management held its Gentex (GNTX) position steady in Q1 2026 at 8,620 shares worth $188K. The position accounts for 0.01% of the portfolio, ranked #276.

Castleark Management first reported a position in GNTX in Q2 2013 and has held it in 52 quarters since. The position peaked at $9.63M in Q4 2020. 501 funds tracked by Wall St. Rank hold GNTX as of Q1 2026.

Castleark Management held 8,620 shares of Gentex worth $188K as of Q1 2026.
Castleark Management left its Gentex share count unchanged in Q1 2026.
Gentex made up 0.01% of Castleark Management's portfolio in Q1 2026, its #276 holding.
Castleark Management first reported a position in Gentex in Q2 2013 and has held it in 52 quarters since.
Castleark Management's Gentex position peaked at $9.63M in Q4 2020.
501 funds tracked by Wall St. Rank held Gentex as of Q1 2026.

Based on Castleark Management's 13F filing for Q1 2026, filed 15 May 2026.