Griffon Corporation
US ˙ NYSE ˙ US3984331021

SecurityGFF / Griffon Corporation
InstitutionCitigroup Inc
Latest Disclosed Ownership25,185 shares
Latest Disclosed Value $ 1,830,446
Citigroup Inc ownership in GFF / Griffon Corporation

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 25,185 shares of Griffon Corporation (US:GFF) valued at $1,830,446 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 30,842 shares of Griffon Corporation. This represents a change in shares of -18.34% during the quarter. The current value of the position is $2,169,436 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (GFF) in the form of stock options.

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.

GFF / Griffon Corporation 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)
2026-05-11 2026-03-31 13F GRIFFON COM 398433102 25,185 -5,657 -18.34 1,830 -19.42 0.0008
2026-02-13 2025-12-31 13F GRIFFON COM 398433102 30,842 -291 -0.93 2,272 -4.18 0.0010
2025-11-10 2025-09-30 13F GRIFFON COM 398433102 31,133 -16,191 -34.21 2,371 -30.78 0.0011
2025-08-11 2025-06-30 13F GRIFFON COM 398433102 47,324 -27,059 -36.38 3,425 -35.61 0.0017
2025-05-12 2025-03-31 13F GRIFFON COM 398433102 74,383 17,929 31.76 5,318 32.19 0.0027
2025-02-12 2024-12-31 13F GRIFFON COM 398433102 56,454 -6,668 -10.56 4,023 -8.94 0.0024
2024-11-12 2024-09-30 13F GRIFFON COM 398433102 63,122 33,002 109.57 4,419 129.75 0.0026
2024-08-12 2024-06-30 13F GRIFFON COM 398433102 30,120 -701 -2.27 1,923 -14.91 0.0012
2024-05-10 2024-03-31 13F GRIFFON COM 398433102 30,821 4,293 16.18 2,260 39.85 0.0015
2024-02-09 2023-12-31 13F GRIFFON COM 398433102 26,528 2,897 12.26 1,617 72.47 0.0011
2023-12-06 2023-09-30 13F/A-1 GRIFFON COM 398433102 23,631 -21,583 -47.74 937 -48.57 0.0007
2023-11-09 2023-09-30 13F GRIFFON COM 398433102 23,631 -21,583 937 0.0003
2023-08-10 2023-06-30 13F GRIFFON COM 398433102 45,214 -118,675 -72.41 1,822 -65.27 0.0012
2023-05-11 2023-03-31 13F GRIFFON COM 398433102 163,889 135,586 479.05 5,246 418.38 0.0037
2023-02-09 2022-12-31 13F GRIFFON COM 398433102 28,303 5,820 25.89 1,013 52.41 0.0008
2022-11-10 2022-09-30 13F GRIFFON COM 398433102 22,483 1,450 6.89 664 12.54 0.0005
2022-08-10 2022-06-30 13F GRIFFON COM 398433102 21,033 -20,859 -49.79 590 -29.68 0.0004
2022-05-12 2022-03-31 13F GRIFFON COM 398433102 41,892 4,834 13.04 839 -20.47 0.0005
2022-02-10 2021-12-31 13F GRIFFON COM 398433102 37,058 11,881 47.19 1,055 70.44 0.0006
2021-11-10 2021-09-30 13F GRIFFON COM 398433102 25,177 -4 -0.02 619 -4.03 0.0004
2021-08-10 2021-06-30 13F GRIFFON COM 398433102 25,181 19,940 380.46 645 354.23 0.0004
2021-05-13 2021-03-31 13F GRIFFON COM 398433102 5,241 -9,055 -63.34 142 -51.20 0.0001
2021-02-11 2020-12-31 13F GRIFFON COM 398433102 14,296 -1,969 -12.11 291 -8.49 0.0002
2020-11-12 2020-09-30 13F GRIFFON COM 398433102 16,265 -13,678 -45.68 318 -42.70 0.0002
2020-08-12 2020-06-30 13F GRIFFON COM 398433102 29,943 3,981 15.33 555 69.21 0.0004
2020-05-12 2020-03-31 13F GRIFFON COM 398433102 25,962 5,442 26.52 328 -21.34 0.0003
2020-02-12 2019-12-31 13F GRIFFON COM 398433102 20,520 -5,423 -20.90 417 -23.35 0.0003
2019-11-08 2019-09-30 13F GRIFFON COM 398433102 25,943 -53 -0.20 544 23.92 0.0004
2019-08-12 2019-06-30 13F GRIFFON COM 398433102 25,996 5,374 26.06 439 14.92 0.0004
2019-05-13 2019-03-31 13F GRIFFON COM 398433102 20,622 -2,033 -8.97 382 61.86 0.0004
2019-02-12 2018-12-31 13F GRIFFON COM 398433102 22,655 2,088 10.15 236 -28.92 0.0002
2018-11-13 2018-09-30 13F GRIFFON COM 398433102 20,567 19,509 1,843.95 332 1,744.44 0.0003
2018-08-10 2018-06-30 13F GRIFFON COM 398433102 1,058 -4,586 -81.25 18 -82.52 0.0000
2018-05-11 2018-03-31 13F GRIFFON COM 398433102 5,644 -3,297 -36.88 103 -43.41 0.0001
2018-02-12 2017-12-31 13F GRIFFON COM 398433102 8,941 -17,740 -66.49 182 -69.26 0.0001
2017-11-13 2017-09-30 13F GRIFFON COM 398433102 26,681 -10,993 -29.18 592 -28.42 0.0005
2017-08-11 2017-06-30 13F GRIFFON COM 398433102 37,674 6,344 20.25 827 6.99 0.0007
2017-05-12 2017-03-31 13F GRIFFON COM 398433102 31,330 -39,148 -55.55 773 -58.13 0.0007
2017-02-10 2016-12-31 13F GRIFFON COM 398433102 70,478 26,751 61.18 1,846 148.12 0.0017
2016-11-10 2016-09-30 13F GRIFFON COM 398433102 43,727 11,188 34.38 744 35.52 0.0007
2016-08-12 2016-06-30 13F GRIFFON COM 398433102 32,539 -11,226 -25.65 549 -18.79 0.0006
2016-05-13 2016-03-31 13F GRIFFON COM 398433102 43,765 15,463 54.64 676 34.39 0.0008
2016-02-12 2015-12-31 13F GRIFFON COM 398433102 28,302 7,613 36.80 503 54.29 0.0005
2015-11-13 2015-09-30 13F GRIFFON COM 398433102 20,689 10,771 108.60 326 106.33 0.0003
2015-08-13 2015-06-30 13F GRIFFON COM 398433102 9,918 2,266 29.61 158 18.80 0.0001
2015-05-14 2015-03-31 13F GRIFFON COM 398433102 7,652 -9,305 -54.87 133 -41.15 0.0001
2015-02-17 2014-12-31 13F GRIFFON COM 398433102 16,957 15,496 1,060.64 226 1,229.41 0.0002
2014-11-14 2014-09-30 13F GRIFFON COM 398433102 1,461 1,124 333.53 17 325.00 0.0000
2014-08-14 2014-06-30 13F GRIFFON COM 398433102 337 -9,877 -96.70 4 -96.72 0.0000
2014-05-15 2014-03-31 13F GRIFFON COM 398433102 10,214 -25,844 -71.67 122 -74.42 0.0001
2014-02-14 2013-12-31 13F GRIFFON COM 398433102 36,058 19,565 118.63 477 130.43 0.0004
2013-11-14 2013-09-30 13F GRIFFON COM 398433102 16,493 -11,683 -41.46 207 -34.70 0.0002
2013-08-14 2013-06-30 13F GRIFFON COM 398433102 28,176 28,176 317 0.0003
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
(%)
2023-08-10 2023-06-30 13F GRIFFON COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-11 2023-03-31 13F GRIFFON COM Put 500,000 16,005 n/a n/a n/a
2017-05-12 2017-03-31 13F GRIFFON COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-02-10 2016-12-31 13F GRIFFON COM Put 94,200 2,468 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.