Boston Partners reports 1.99% decrease in ownership of GTX / Gentex Corporation

Gentex Corporation

DE ˙ DB ˙ US3719011096

21,32 € ↑0,33 (1,57%)

2026-06-04
DEL PRIS

Security	DE:GTX / Gentex Corporation
Institution	Boston Partners
Latest Disclosed Ownership	5,690,036 shares
Latest Disclosed Value	$ 124,321,258

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 5,690,036 shares of Gentex Corporation (DE:GTX) valued at $105,834,670 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,805,749 shares of Gentex Corporation. This represents a change in shares of -1.99% during the quarter. The current value of the position is $121,311,568 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)

File Date	Effective Date	Form	Security	Class	ID	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-11	2026-03-31	13F	GENTEX	COM	371901109	5,690,036	-115,713	-1.99	124,321	-7.99	0.0556
2026-02-13	2025-12-31	13F	GENTEX	COM	371901109	5,805,749	-106,742	-1.81	135,110	-19.24	0.1399
2025-11-13	2025-09-30	13F	GENTEX	COM	371901109	5,912,491	123,731	2.14	167,299	31.36	0.1718
2025-08-12	2025-06-30	13F/A-1	GENTEX	COM	371901109	5,788,760	-111,634	-1.89	127,362	-7.34	0.1414
2025-08-07	2025-06-30	13F	GENTEX	COM	371901109	5,788,760	-111,634		127,362		0.0585
2025-05-13	2025-03-31	13F	GENTEX	COM	371901109	5,900,394	-151,708	-2.51	137,457	-20.94	0.1662
2025-02-11	2024-12-31	13F	GENTEX	COM	371901109	6,052,102	-594,740	-8.95	173,867	-11.90	0.2115
2024-11-12	2024-09-30	13F	GENTEX	COM	371901109	6,646,842	112,088	1.72	197,342	-10.42	0.2329
2024-08-14	2024-06-30	13F	GENTEX	COM	371901109	6,534,754	828,343	14.52	220,296	6.89	0.2737
2024-05-28	2024-03-31	13F/A-1	GENTEX	COM	371901109	5,706,411	230,873	4.22	206,095	15.25	0.2455
2024-05-13	2024-03-31	13F	GENTEX	COM	371901109	5,706,411	230,873		206,095		0.1020
2024-02-07	2023-12-31	13F	GENTEX	COM	371901109	5,475,538	-78,725	-1.42	178,828	-1.02	0.2368
2023-11-08	2023-09-30	13F	GENTEX	COM	371901109	5,554,263	5,838	0.11	180,675	11.24	0.2501
2023-08-10	2023-06-30	13F	GENTEX	COM	371901109	5,548,425	39,485	0.72	162,424	5.19	0.2186
2023-05-09	2023-03-31	13F	GENTEX	COM	371901109	5,508,940	975,818	21.53	154,413	24.88	0.2123
2023-02-08	2022-12-31	13F	GENTEX	COM	371901109	4,533,122	85,153	1.91	123,650	16.58	0.1673
2022-11-09	2022-09-30	13F	GENTEX	COM	371901109	4,447,969	260,612	6.22	106,068	-9.44	0.1552
2022-08-10	2022-06-30	13F	GENTEX	COM	371901109	4,187,357	68,260	1.66	117,124	-2.51	0.1637
2022-05-10	2022-03-31	13F	GENTEX	COM	371901109	4,119,097	107,975	2.69	120,138	-14.06	0.1455
2022-02-04	2021-12-31	13F	GENTEX	COM	371901109	4,011,122	-1,148,819	-22.26	139,791	-17.87	0.1684
2021-11-05	2021-09-30	13F	GENTEX	COM	371901109	5,159,941	126,233	2.51	170,199	2.18	0.2156
2021-08-12	2021-06-30	13F	GENTEX	COM	371901109	5,033,708	27,120	0.54	166,561	-6.73	0.2124
2021-05-10	2021-03-31	13F	GENTEX	COM	371901109	5,006,588	405,036	8.80	178,581	14.38	0.2395
2021-02-10	2020-12-31	13F/A-1	GENTEX	COM	371901109	4,601,552	-42,535	-0.92	156,131	30.56	0.2428
2021-02-04	2020-12-31	13F	GENTEX	COM	371901109	4,601,552	-42,535		156,131		93,669.3198
2020-11-13	2020-09-30	13F/A-1	GENTEX	COM	371901109	4,644,087	-95,673	-2.02	119,585	-2.10	0.2178
2020-11-09	2020-09-30	13F	GENTEX	COM	371901109	4,739,760	0		122,147		89,670.4484
2020-08-12	2020-06-30	13F	GENTEX	COM	371901109	4,739,760	403,316	9.30	122,147	27.14	0.2244
2020-05-13	2020-03-31	13F	GENTEX	COM	371901109	4,336,444	1,318,172	43.67	96,076	9.83	0.1908
2020-02-06	2019-12-31	13F/A-1	GENTEX	COM	371901109	3,018,272	96,165	3.29	87,474	8.71	0.1157
2020-02-05	2019-12-31	13F	GENTEX	COM	371901109	3,018,272	96,165		87,474		49,180.4376
2019-11-20	2019-09-30	13F/A-1	GENTEX	COM	371901109	2,922,107	-1,650,330	-36.09	80,468	-28.48	0.1090
2019-11-08	2019-09-30	13F	GENTEX	COM	371901109	4,567,785	-4,652		112,541		0.1488
2019-08-26	2019-06-30	13F/A-1	GENTEX	COM	371901109	4,572,437	853,372	22.95	112,516	46.30	0.1476
2019-08-09	2019-06-30	13F	GENTEX	COM	371901109	4,572,570	853,505		112,520
2019-05-13	2019-03-31	13F/A-1	GENTEX	COM	371901109	3,719,065	3,719,065		76,910		0.1019
2019-05-03	2019-03-31	13F	GENTEX	COM	371901109	3,719,065			76,910		0.1019

Legend

Shares: The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value: The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price: The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class: This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred

Allocation (%): The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation: The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%): The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis: The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss: This is the market value of the position as of the effective date minus the cost basis.