Generac Holdings Inc.
MX ˙ BMV ˙ US3687361044
SecurityMX:GNRC / Generac Holdings Inc.
InstitutionImpax Asset Management Group plc
Latest Disclosed Ownership336,461 shares
Latest Disclosed Value $ 65,720,927
Impax Asset Management Group plc reports 26.89% decrease in ownership of GNRC / Generac Holdings Inc.

On May 12, 2026 - Impax Asset Management Group plc filed a 13F-HR form disclosing ownership of 336,461 shares of Generac Holdings Inc. (MX:GNRC) valued at $65,720,927 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 460,242 shares of Generac Holdings Inc.. This represents a change in shares of -26.89% during the quarter.

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)
2026-05-12 2026-03-31 13F Generac Holdings Common Stock 368736104 336,461 -123,781 -26.89 65,721 4.71 0.4581
2026-01-29 2025-12-31 13F Generac Holdings Common Stock 368736104 460,242 -2,859 -0.62 62,763 -18.42 0.3926
2025-11-06 2025-09-30 13F Generac Holdings Common Stock 368736104 463,101 -330,541 -41.65 76,936 -31.76 0.4490
2025-08-08 2025-06-30 13F Generac Holdings Common Stock 368736104 793,642 -41,757 -5.00 112,737 7.38 0.6482
2025-04-29 2025-03-31 13F Generac Holdings Common Stock 368736104 835,399 -8,013 -0.95 104,989 -19.17 0.6323
2025-02-04 2024-12-31 13F Generac Holdings Common Stock 368736104 843,412 -92,730 -9.91 129,891 -12.15 0.5882
2024-11-06 2024-09-30 13F/A-1 Generac Holdings Common Stock 368736104 936,142 -29,646 -3.07 147,858 16.45 0.5821
2024-10-30 2024-09-30 13F Generac Holdings Common Stock 368736104 936,142 -29,646 147,858 0.5828
2024-11-08 2024-06-30 13F/A-1 Generac Holdings Common Stock 368736104 965,788 -197,503 -16.98 126,967 -13.01 0.5169
2024-08-05 2024-06-30 13F Generac Holdings Common Stock 368736104 965,788 -197,503 126,967 0.5174
2024-04-30 2024-03-31 13F Generac Holdings Common Stock 368736104 1,163,291 6,758 0.58 145,948 -1.87 0.5586
2024-01-26 2023-12-31 13F Generac Holdings Common Stock 368736104 1,156,533 -16,209 -1.38 148,722 16.96 0.5971
2023-11-07 2023-09-30 13F/A-1 Generac Holdings Common Stock 368736104 1,172,742 37,846 3.33 127,151 -24.49 0.5681
2023-11-07 2023-09-30 13F Generac Holdings Common Stock 368736104 1,172,742 127,151
2023-08-07 2023-06-30 13F Generac Holdings Common Stock 368736104 1,134,896 -10,069 -0.88 168,384 36.85 0.6767
2023-05-10 2023-03-31 13F Generac Holdings Common Stock 368736104 1,144,965 -7,194 -0.62 123,043 6.63 0.5141
2023-02-09 2022-12-31 13F Generac Holdings Common Stock 368736104 1,152,159 276,082 31.51 115,394 -25.66 0.5163
2022-11-08 2022-09-30 13F Generac Holdings Common Stock 368736104 876,077 29,916 3.54 155,216 -12.40 0.7978
2022-08-11 2022-06-30 13F/A-2 Generac Holdings Common Stock 368736104 846,161 191,469 29.25 177,181 -8.52 0.8636
2022-08-02 2022-06-30 13F Generac Holdings Common Stock 368736104 654,692 0 193,676 0.8005
2022-05-16 2022-03-31 13F Generac Holdings Common Stock 368736104 654,692 -8,129 -1.23 193,676 -16.57 0.8005
2022-02-14 2021-12-31 13F Generac Holdings Common Stock 368736104 662,821 99,878 17.74 232,149 1.46 0.8489
2021-11-12 2021-09-30 13F Generac Holdings Common Stock 368736104 562,943 -52,522 -8.53 228,806 -9.97 0.9398
2021-08-05 2021-06-30 13F Generac Holdings Common Stock 368736104 615,465 -103,495 -14.40 254,138 8.60 1.1207
2021-05-14 2021-03-31 13F Generac Holdings Common Stock 368736104 718,960 -99,413 -12.15 234,017 26.49 1.1973
2021-02-16 2020-12-31 13F Generac Holdings Common Stock 368736104 818,373 60,347 7.96 185,007 26.85 1.1772
2020-11-12 2020-09-30 13F Generac Holdings Common Stock 368736104 758,026 -160,882 -17.51 145,848 30.17 1.2760
2020-08-14 2020-06-30 13F Generac Holdings Common Stock 368736104 918,908 56,446 6.54 112,042 40.48 1.1497
2020-05-15 2020-03-31 13F Generac Holdings Common Stock 368736104 862,462 -156,951 -15.40 79,757 -21.54 1.0613
2020-02-13 2019-12-31 13F Generac Holdings Common Stock 368736104 1,019,413 -262,157 -20.46 101,655 2.17 1.1340
2019-11-14 2019-09-30 13F Generac Holdings Common Stock 368736104 1,281,570 -70,719 -5.23 99,498 6.00 1.2960
2019-08-13 2019-06-30 13F Generac Holdings Common Stock 368736104 1,352,289 326,138 31.78 93,862 78.55 1.2193
2019-05-13 2019-03-31 13F Generac Holdings Common Stock 368736104 1,026,151 88,590 9.45 52,570 12.82 0.7236
2019-02-14 2018-12-31 13F Generac Holdings Common Stock 368736104 937,561 -226,582 -19.46 46,597 -28.40 0.7594
2018-11-14 2018-09-30 13F Generac Holdings Common Stock 368736104 1,164,143 1,164,143 65,078 0.9345
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.