Generac Holdings Inc.
MX ˙ BMV ˙ US3687361044
SecurityMX:GNRC / Generac Holdings Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership105,809 shares
Latest Disclosed Value $ 20,667,577
Rhumbline Advisers reports 4.55% decrease in ownership of GNRC / Generac Holdings Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 105,809 shares of Generac Holdings Inc. (MX:GNRC) valued at $20,667,577 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 110,852 shares of Generac Holdings Inc.. This represents a change in shares of -4.55% 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 HLDGS INC COM COM 368736104 105,809 -5,043 -4.55 20,668 36.72 0.0177
2026-02-13 2025-12-31 13F GENERAC HLDGS INC COM COM 368736104 110,852 -890 -0.80 15,117 -19.19 0.0122
2025-11-06 2025-09-30 13F GENERAC HLDGS INC COM COM 368736104 111,742 -6,185 -5.24 18,706 10.76 0.0150
2025-08-12 2025-06-30 13F GENERAC HLDGS INC COM COM 368736104 117,927 -2,421 -2.01 16,888 10.81 0.0145
2025-05-29 2025-03-31 13F/A-1 GENERAC HLDGS INC COM COM 368736104 120,348 18,218 17.84 15,242 -3.75 0.0143
2025-04-08 2025-03-31 13F GENERAC HLDGS INC COM COM 368736104 120,348 18,218 15,242 0.0143
2025-05-29 2024-12-31 13F/A-1 GENERAC HLDGS INC COM COM 368736104 102,130 -2,478 -2.37 15,835 -4.72 0.0142
2025-01-30 2024-12-31 13F GENERAC HLDGS INC COM COM 368736104 102,130 -2,478 15,835 0.0142
2024-11-12 2024-09-30 13F GENERAC HLDGS INC COM COM 368736104 104,608 -4,667 -4.27 16,620 15.03 0.0150
2024-08-01 2024-06-30 13F GENERAC HLDGS INC COM COM 368736104 109,275 -1,142 -1.03 14,448 3.74 0.0136
2024-05-09 2024-03-31 13F GENERAC HLDGS INC COM COM 368736104 110,417 -8,393 -7.06 13,928 -9.29 0.0134
2024-02-08 2023-12-31 13F GENERAC HLDGS INC COM COM 368736104 118,810 -515 -0.43 15,355 18.10 0.0161
2023-11-09 2023-09-30 13F GENERAC HLDGS INC COM COM 368736104 119,325 -590 -0.49 13,002 -27.30 0.0151
2023-08-08 2023-06-30 13F GENERAC HLDGS INC COM COM 368736104 119,915 -8,320 -6.49 17,883 137,453.85 0.0200
2023-05-11 2023-03-31 13F GENERAC HLDGS INC COM COM 368736104 128,235 11,026 9.41 14 -99.89 0.0171
2023-02-14 2022-12-31 13F GENERAC HLDGS INC COM COM 368736104 117,209 2,886 2.52 11,798 -42.07 0.0159
2022-11-10 2022-09-30 13F GENERAC HLDGS INC COM COM 368736104 114,323 2,912 2.61 20,365 -13.20 0.0303
2022-08-11 2022-06-30 13F GENERAC HLDGS INC COM COM 368736104 111,411 8,733 8.51 23,461 -23.13 0.0342
2022-05-12 2022-03-31 13F GENERAC HLDGS INC COM COM 368736104 102,678 -450 -0.44 30,522 -15.90 0.0393
2022-02-10 2021-12-31 13F GENERAC HLDGS INC COM COM 368736104 103,128 11 0.01 36,293 -13.88 0.0445
2021-11-12 2021-09-30 13F GENERAC HLDGS INC COM COM 368736104 103,117 3,798 3.82 42,141 2.20 0.0570
2021-08-05 2021-06-30 13F GENERAC HLDGS INC COM COM 368736104 99,319 -1,842 -1.82 41,232 24.47 0.0541
2021-05-06 2021-03-31 13F GENERAC HLDGS INC COM COM 368736104 101,161 -63,509 -38.57 33,125 -11.54 0.0450
2021-02-10 2020-12-31 13F GENERAC HLDGS INC COM COM 368736104 164,670 -4,880 -2.88 37,448 14.06 0.0517
2020-11-12 2020-09-30 13F GENERAC HLDGS INC COM COM 368736104 169,550 -4,486 -2.58 32,832 54.72 0.0514
2020-08-13 2020-06-30 13F GENERAC HLDGS INC COM COM 368736104 174,036 -12,255 -6.58 21,220 22.26 0.0354
2020-05-06 2020-03-31 13F GENERAC HLDGS INC COM COM 368736104 186,291 103,602 125.29 17,357 108.67 0.0364
2020-02-05 2019-12-31 13F GENERAC HLDGS INC COM COM 368736104 82,689 3,335 4.20 8,318 33.79 0.0139
2019-10-23 2019-09-30 13F GENERAC HLDGS INC COM COM 368736104 79,354 -3,069 -3.72 6,217 8.67 0.0114
2019-08-14 2019-06-30 13F GENERAC HLDGS INC COM COM 368736104 82,423 1,441 1.78 5,721 37.89 0.0107
2019-05-01 2019-03-31 13F GENERAC HLDGS INC COM COM 368736104 80,982 450 0.56 4,149 3.67 0.0080
2019-01-31 2018-12-31 13F GENERAC HLDGS INC COM COM 368736104 80,532 25,946 47.53 4,002 29.98 0.0087
2018-11-07 2018-09-30 13F GENERAC HLDGS INC COM COM 368736104 54,586 -4,058 -6.92 3,079 1.48 0.0059
2018-08-06 2018-06-30 13F GENERAC HLDGS INC COM COM 368736104 58,644 1,228 2.14 3,034 15.10 0.0061
2018-05-02 2018-03-31 13F GENERAC HLDGS INC COM COM 368736104 57,416 -2,668 -4.44 2,636 -11.39 0.0055
2018-02-09 2017-12-31 13F GENERAC HLDGS INC COM COM 368736104 60,084 -10,228 -14.55 2,975 -7.87 0.0060
2017-11-06 2017-09-30 13F GENERAC HLDGS INC COM COM 368736104 70,312 291 0.42 3,229 27.63 0.0070
2017-08-02 2017-06-30 13F GENERAC HLDGS INC COM COM 368736104 70,021 -6,183 -8.11 2,530 -10.95 0.0058
2017-05-02 2017-03-31 13F GENERAC HLDGS INC COM COM 368736104 76,204 3,304 4.53 2,841 -4.34 0.0066
2017-01-27 2016-12-31 13F GENERAC HLDGS INC COM COM 368736104 72,900 3,395 4.88 2,970 17.72 0.0075
2016-11-08 2016-09-30 13F GENERAC HLDGS INC COM COM 368736104 69,505 1,331 1.95 2,523 5.87 0.0070
2016-08-11 2016-06-30 13F GENERAC HLDGS INC COM COM 368736104 68,174 -1,527 -2.19 2,383 -8.20 0.0071
2016-05-02 2016-03-31 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 69,701 1,950 2.88 2,596 28.71 0.0081
2016-02-03 2015-12-31 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 67,751 5,130 8.19 2,017 7.06 0.0065
2015-11-04 2015-09-30 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 62,621 476 0.77 1,884 -23.72 0.0064
2015-08-04 2015-06-30 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 62,145 -5,220 -7.75 2,470 -24.70 0.0079
2015-05-12 2015-03-31 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 67,365 10,790 19.07 3,280 24.01 0.0095
2015-02-06 2014-12-31 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 56,575 -3,925 -6.49 2,645 7.83 0.0077
2014-11-12 2014-09-30 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 60,500 -1,205 -1.95 2,453 -18.45 0.0074
2014-08-06 2014-06-30 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 61,705 12,687 25.88 3,008 4.05 0.0088
2014-05-06 2014-03-31 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 49,018 -2,440 -4.74 2,891 -0.82 0.0086
2014-02-03 2013-12-31 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 51,458 1,560 3.13 2,915 36.98 0.0086
2013-11-05 2013-09-30 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 49,898 886 1.81 2,128 17.31 0.0066
2013-08-07 2013-06-30 13F GENERAC HOLDINGS INC COMMON ST COM 368736104 49,012 49,012 1,814 0.0058
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.