Gentex Corporation
US ˙ NasdaqGS ˙ US3719011096

SecurityGNTX / Gentex Corporation
InstitutionShell Asset Management Co
Latest Disclosed Ownership3,005 shares
Latest Disclosed Value $ 85
Shell Asset Management Co reports 60.35% decrease in ownership of GNTX / Gentex Corporation

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 3,005 shares of Gentex Corporation (US:GNTX) valued at $85,042 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 7,579 shares of Gentex Corporation. The current value of the position is $75,275 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 Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-11-07 2025-09-30 13F GENTEX COM 371901109 3,005 -4,574 -60.35 0 0.0085
2025-07-23 2025-06-30 13F GENTEX COM 371901109 7,579 -1,662 -17.99 0 0.0058
2025-05-14 2025-03-31 13F GENTEX COM 371901109 9,241 -399 -4.14 0 0.0102
2025-02-14 2024-12-31 13F GENTEX COM 371901109 9,640 -24 -0.25 0 0.0121
2024-11-07 2024-09-30 13F GENTEX COM 371901109 9,664 -4,102 -29.80 0 0.0126
2024-07-25 2024-03-31 13F GENTEX COM 371901109 13,766 -1,348 -8.92 0 0.0211
2024-02-14 2023-12-31 13F GENTEX COM 371901109 15,114 -4,557 -23.17 0 0.0228
2023-11-08 2023-09-30 13F GENTEX COM 371901109 19,671 -2,797 -12.45 1 0.0264
2023-07-28 2023-06-30 13F GENTEX COM 371901109 22,468 -1,090 -4.63 1 0.0259
2023-05-15 2023-03-31 13F GENTEX COM 371901109 23,558 -82 -0.35 1 0.0274
2023-02-07 2022-12-31 13F GENTEX COM 371901109 23,640 -4,919 -17.22 1 -100.00 0.0283
2022-11-14 2022-09-30 13F GENTEX COM 371901109 28,559 -7,486 -20.77 681 -32.44 0.0265
2022-08-09 2022-06-30 13F GENTEX COM 371901109 36,045 59 0.16 1,008 -4.00 0.0298
2022-05-04 2022-03-31 13F GENTEX COM 371901109 35,986 -5,328 -12.90 1,050 -27.08 0.0248
2022-02-09 2021-12-31 13F GENTEX COM 371901109 41,314 192 0.47 1,440 6.19 0.0295
2021-11-04 2021-09-30 13F GENTEX COM 371901109 41,122 -1,770 -4.13 1,356 -4.44 0.0304
2021-08-12 2021-06-30 13F GENTEX COM 371901109 42,892 2,320 5.72 1,419 -1.94 0.0275
2021-05-10 2021-03-31 13F GENTEX COM 371901109 40,572 -230 -0.56 1,447 4.55 0.0290
2021-02-16 2020-12-31 13F GENTEX COM 371901109 40,802 6,098 17.57 1,384 54.81 0.0286
2020-11-13 2020-09-30 13F GENTEX COM 371901109 34,704 0 0.00 894 0.00 0.0208
2020-08-10 2020-06-30 13F GENTEX COM 371901109 34,704 -11,973 -25.65 894 -13.54 0.0223
2020-05-11 2020-03-31 13F GENTEX COM 371901109 46,677 -711 -1.50 1,034 -24.69 0.0288
2020-02-13 2019-12-31 13F GENTEX COM 371901109 47,388 -1,233 -2.54 1,373 2.54 0.0296
2019-11-12 2019-09-30 13F GENTEX COM 371901109 48,621 -416 -0.85 1,339 10.94 0.0306
2019-08-12 2019-06-30 13F GENTEX COM 371901109 49,037 -1,119 -2.23 1,207 16.39 0.0267
2019-05-09 2019-03-31 13F GENTEX COM 371901109 50,156 0 0.00 1,037 2.27 0.0229
2019-02-13 2018-12-31 13F GENTEX COM 371901109 50,156 -4,200 -7.73 1,014 -13.04 0.0253
2018-11-13 2018-09-30 13F GENTEX COM 371901109 54,356 0 0.00 1,166 -6.79 0.0230
2018-08-10 2018-06-30 13F GENTEX COM 371901109 54,356 -2,910 -5.08 1,251 -5.08 0.0256
2018-05-14 2018-03-31 13F GENTEX COM 371901109 57,266 0 0.00 1,318 9.83 0.0262
2018-02-09 2017-12-31 13F GENTEX COM 371901109 57,266 0 0.00 1,200 5.82 0.0238
2017-10-20 2017-09-30 13F/A-1 GENTEX COM 371901109 57,266 -1,400 -2.39 1,134 1.89 0.0252
2017-07-26 2017-06-30 13F GENTEX COM 371901109 58,666 0 0.00 1,113 -11.03 0.0276
2017-04-26 2017-03-31 13F GENTEX COM 371901109 58,666 -4,106 -6.54 1,251 1.21 0.0319
2017-01-10 2016-12-31 13F GENTEX COM 371901109 62,772 -547 -0.86 1,236 11.15 0.0334
2016-10-28 2016-09-30 13F GENTEX COM 371901109 63,319 -2,905 -4.39 1,112 8.70 0.0266
2016-07-25 2016-06-30 13F GENTEX COM 371901109 66,224 -3,775 -5.39 1,023 -6.83 0.0237
2016-05-11 2016-03-31 13F GENTEX COM 371901109 69,999 69,999 1,098 0.0263
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.