Generac Holdings Inc.
US ˙ NYSE ˙ US3687361044

SecurityGNRC / Generac Holdings Inc.
InstitutionWolverine Trading, Llc
Latest Disclosed Ownership49,469 shares
Latest Disclosed Value $ 8,202,950
Wolverine Trading, Llc ownership in GNRC / Generac Holdings Inc.

On November 14, 2025 - Wolverine Trading, Llc filed a 13F-HR form disclosing ownership of 49,469 shares of Generac Holdings Inc. (US:GNRC) valued at $8,281,111 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 18, 2025 disclosing 29,337 shares of Generac Holdings Inc.. This represents a change in shares of 68.62% during the quarter. The current value of the position is $14,114,000 USD.

Wolverine Trading, Llc has a history of taking positions in derivatives of the underlying security (GNRC) in the form of stock options. The firm currently holds call options representing 127,400 of underlying shares valued at $21,125,468 USD and put options representing 125,800 of underlying shares valued at $20,860,156 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

GNRC / Generac Holdings Inc. Historical Put/Call Ratio
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)
2025-11-14 2025-09-30 13F GENERAC HLDGS COM 368736104 49,469 20,132 68.62 8,203 96.36 0.0059
2025-08-18 2025-06-30 13F GENERAC HLDGS COM 368736104 29,337 13,814 88.99 4,178 111.82 0.0042
2025-05-15 2025-03-31 13F GENERAC HLDGS COM 368736104 15,523 15,523 1,973 0.0023
2024-11-14 2024-09-30 13F GENERAC HLDGS COM 368736104 0 -7,551 -100.00 0 -100.00
2024-08-14 2024-06-30 13F GENERAC HLDGS COM 368736104 7,551 -17,519 -69.88 998 -68.44 0.0011
2024-05-15 2024-03-31 13F GENERAC HLDGS COM 368736104 25,070 -179 -0.71 3,162 -3.10 0.0032
2024-02-14 2023-12-31 13F GENERAC HLDGS COM 368736104 25,249 12,305 95.06 3,263 131.42 0.0034
2023-11-15 2023-09-30 13F GENERAC HLDGS COM 368736104 12,944 10,002 339.97 1,410 225.64 0.0015
2023-08-23 2023-06-30 13F GENERAC HLDGS COM 368736104 2,942 2,942 434 0.0005
2023-05-15 2023-03-31 13F GENERAC HLDGS COM 368736104 0 -14,108 -100.00 0 -100.00
2023-02-14 2022-12-31 13F GENERAC HLDGS COM 368736104 14,108 11,332 408.21 1,420 194.00 0.0022
2022-11-14 2022-09-30 13F GENERAC HLDGS COM 368736104 2,776 -12,228 -81.50 483 -85.00 0.0008
2022-08-15 2022-06-30 13F GENERAC HLDGS COM 368736104 15,004 -5,749 -27.70 3,220 -50.12 0.0053
2022-05-16 2022-03-31 13F GENERAC HLDGS COM 368736104 20,753 -17,750 -46.10 6,455 -52.50 0.0083
2022-02-14 2021-12-31 13F GENERAC HLDGS COM 368736104 38,503 13,350 53.08 13,590 32.91 0.0161
2021-11-12 2021-09-30 13F GENERAC HLDGS COM 368736104 25,153 25,153 10,225 0.0116
2021-08-06 2021-06-30 13F GENERAC HLDGS COM 368736104 0 -8,680 -100.00 0 -100.00
2021-05-14 2021-03-31 13F GENERAC HLDGS COM 368736104 8,680 4,218 94.53 2,758 169.60 0.0042
2021-02-12 2020-12-31 13F GENERAC HLDGS COM 368736104 4,462 -25,252 -84.98 1,023 -81.70 0.0016
2020-11-13 2020-09-30 13F GENERAC HLDGS COM 368736104 29,714 6,959 30.58 5,590 106.65 0.0136
2020-08-13 2020-06-30 13F GENERAC HLDGS COM 368736104 22,755 386 1.73 2,705 29.30 0.0074
2020-05-11 2020-03-31 13F GENERAC HLDGS COM 368736104 22,369 22,369 2,092 0.0063
2019-11-14 2019-09-30 13F GENERAC HLDGS COM 368736104 0 -9,756 -100.00 0 -100.00
2019-08-20 2019-06-30 13F GENERAC HLDGS COM 368736104 9,756 9,756 677 0.0019
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-11-14 2025-09-30 13F GENERAC HLDGS COM Call 127,400 -5.00 21,125 10.62 n/a n/a n/a
2025-08-18 2025-06-30 13F GENERAC HLDGS COM Call 134,100 62.55 19,097 82.15 n/a n/a n/a
2025-05-15 2025-03-31 13F GENERAC HLDGS COM Call 82,500 -37.21 10,485 -48.44 n/a n/a n/a
2025-02-14 2024-12-31 13F GENERAC HLDGS COM Call 131,400 -8.30 20,333 -8.36 n/a n/a n/a
2024-11-14 2024-09-30 13F GENERAC HLDGS COM Call 143,300 6.94 22,189 25.24 n/a n/a n/a
2024-08-14 2024-06-30 13F GENERAC HLDGS COM Call 134,000 8.06 17,717 13.27 n/a n/a n/a
2024-05-15 2024-03-31 13F GENERAC HLDGS COM Call 124,000 -26.54 15,641 -28.30 n/a n/a n/a
2024-02-14 2023-12-31 13F GENERAC HLDGS COM Call 168,800 -8.76 21,816 8.23 n/a n/a n/a
2023-11-15 2023-09-30 13F GENERAC HLDGS COM Call 185,000 6.57 20,158 -21.22 n/a n/a n/a
2023-08-23 2023-06-30 13F GENERAC HLDGS COM Call 173,600 0.70 25,589 134,573.68 n/a n/a n/a
2023-05-15 2023-03-31 13F GENERAC HLDGS COM Call 172,400 -22.90 19 -99.92 n/a n/a n/a
2023-02-14 2022-12-31 13F GENERAC HLDGS COM Call 223,600 64.05 22,508 -5.18 n/a n/a n/a
2022-11-14 2022-09-30 13F GENERAC HLDGS COM Call 136,300 211.19 23,738 152.53 n/a n/a n/a
2022-08-15 2022-06-30 13F GENERAC HLDGS COM Call 43,800 50.52 9,400 3.84 n/a n/a n/a
2022-05-16 2022-03-31 13F GENERAC HLDGS COM Call 29,100 -60.73 9,052 -65.39 n/a n/a n/a
2022-02-14 2021-12-31 13F GENERAC HLDGS COM Call 74,100 15.06 26,154 -0.10 n/a n/a n/a
2021-11-12 2021-09-30 13F GENERAC HLDGS COM Call 64,400 26,181 n/a n/a n/a
2021-08-06 2021-06-30 13F GENERAC HLDGS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-14 2021-03-31 13F GENERAC HLDGS COM Call 27,500 34.80 8,738 86.91 n/a n/a n/a
2021-02-12 2020-12-31 13F GENERAC HLDGS COM Call 20,400 -4.67 4,675 16.12 n/a n/a n/a
2020-11-13 2020-09-30 13F GENERAC HLDGS COM Call 21,400 15.68 4,026 83.08 n/a n/a n/a
2020-08-13 2020-06-30 13F GENERAC HLDGS COM Call 18,500 -23.87 2,199 -3.26 n/a n/a n/a
2020-05-11 2020-03-31 13F GENERAC HLDGS COM Call 24,300 -51.40 2,273 -55.04 n/a n/a n/a
2020-02-12 2019-12-31 13F GENERAC HLDGS COM Call 50,000 5,056 n/a n/a n/a
2019-11-14 2019-09-30 13F GENERAC HLDGS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-20 2019-06-30 13F GENERAC HLDGS COM Call 11,300 784 n/a n/a n/a
2017-11-15 2017-09-30 13F GENERAC HLDGS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-08-14 2017-06-30 13F GENERAC HLDGS COM Call 6,200 224 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-11-14 2025-09-30 13F GENERAC HLDGS COM Put 125,800 31.32 20,860 52.91 n/a n/a n/a
2025-08-18 2025-06-30 13F GENERAC HLDGS COM Put 95,800 -11.38 13,643 -0.70 n/a n/a n/a
2025-05-15 2025-03-31 13F GENERAC HLDGS COM Put 108,100 68.38 13,738 38.29 n/a n/a n/a
2025-02-14 2024-12-31 13F GENERAC HLDGS COM Put 64,200 -1.98 9,934 -2.05 n/a n/a n/a
2024-11-14 2024-09-30 13F GENERAC HLDGS COM Put 65,500 2.83 10,142 20.42 n/a n/a n/a
2024-08-14 2024-06-30 13F GENERAC HLDGS COM Put 63,700 -45.79 8,422 -43.18 n/a n/a n/a
2024-05-15 2024-03-31 13F GENERAC HLDGS COM Put 117,500 -8.56 14,821 -10.75 n/a n/a n/a
2024-02-14 2023-12-31 13F GENERAC HLDGS COM Put 128,500 -21.41 16,607 -6.78 n/a n/a n/a
2023-11-15 2023-09-30 13F GENERAC HLDGS COM Put 163,500 20.75 17,815 -10.74 n/a n/a n/a
2023-08-23 2023-06-30 13F GENERAC HLDGS COM Put 135,400 45.59 19,958 199,470.00 n/a n/a n/a
2023-05-15 2023-03-31 13F GENERAC HLDGS COM Put 93,000 3.68 10 -99.89 n/a n/a n/a
2023-02-14 2022-12-31 13F GENERAC HLDGS COM Put 89,700 13.69 9,029 -34.29 n/a n/a n/a
2022-11-14 2022-09-30 13F GENERAC HLDGS COM Put 78,900 57.80 13,741 28.05 n/a n/a n/a
2022-08-15 2022-06-30 13F GENERAC HLDGS COM Put 50,000 -6.72 10,731 -35.64 n/a n/a n/a
2022-05-16 2022-03-31 13F GENERAC HLDGS COM Put 53,600 -41.61 16,673 -48.54 n/a n/a n/a
2022-02-14 2021-12-31 13F GENERAC HLDGS COM Put 91,800 -15.70 32,402 -26.81 n/a n/a n/a
2021-11-12 2021-09-30 13F GENERAC HLDGS COM Put 108,900 44,271 n/a n/a n/a
2021-08-06 2021-06-30 13F GENERAC HLDGS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-14 2021-03-31 13F GENERAC HLDGS COM Put 39,000 343.18 12,392 514.38 n/a n/a n/a
2021-02-12 2020-12-31 13F GENERAC HLDGS COM Put 8,800 -63.79 2,017 -55.88 n/a n/a n/a
2020-11-13 2020-09-30 13F GENERAC HLDGS COM Put 24,300 -53.27 4,572 -26.04 n/a n/a n/a
2020-08-13 2020-06-30 13F GENERAC HLDGS COM Put 52,000 -35.88 6,182 -18.50 n/a n/a n/a
2020-05-11 2020-03-31 13F GENERAC HLDGS COM Put 81,100 77.07 7,585 63.79 n/a n/a n/a
2020-02-12 2019-12-31 13F GENERAC HLDGS COM Put 45,800 4,631 n/a n/a n/a
2019-11-14 2019-09-30 13F GENERAC HLDGS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-20 2019-06-30 13F GENERAC HLDGS COM Put 6,200 430 n/a n/a n/a
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.