格里芬公司
US ˙ NYSE ˙ US3984331021

SecurityGFF / Griffon Corporation
InstitutionBoston Partners
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Boston Partners closes position in GFF / Griffon Corporation

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 0 shares of Griffon Corporation (US:GFF) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 363,381 shares of Griffon Corporation. The current value of the position is $0 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)
2026-05-11 2026-03-31 13F GRIFFON COM 398433102 0 -100.00 0
2026-02-13 2025-12-31 13F GRIFFON COM 398433102 363,381 -188,373 -34.14 27,568 -34.55 0.0285
2025-11-13 2025-09-30 13F GRIFFON COM 398433102 551,754 -2,677 -0.48 42,123 2.57 0.0432
2025-08-12 2025-06-30 13F/A-1 GRIFFON COM 398433102 554,431 4,091 0.74 41,068 5.77 0.0456
2025-08-07 2025-06-30 13F GRIFFON COM 398433102 554,431 4,091 41,068 0.0189
2025-05-13 2025-03-31 13F GRIFFON COM 398433102 550,340 -7,778 -1.39 38,827 -3.96 0.0470
2025-02-11 2024-12-31 13F GRIFFON COM 398433102 558,118 2,552 0.46 40,428 14.49 0.0492
2024-11-12 2024-09-30 13F GRIFFON COM 398433102 555,566 98,981 21.68 35,312 28.97 0.0417
2024-08-14 2024-06-30 13F GRIFFON COM 398433102 456,585 181,278 65.85 27,381 37.66 0.0340
2024-05-28 2024-03-31 13F/A-1 GRIFFON COM 398433102 275,307 -2,356 -0.85 19,889 18.19 0.0237
2024-05-13 2024-03-31 13F GRIFFON COM 398433102 275,307 -2,356 19,889 0.0098
2024-02-07 2023-12-31 13F GRIFFON COM 398433102 277,663 81,064 41.23 16,829 547.98 0.0223
2014-02-06 2013-12-31 13F GRIFFON COM 398433102 196,599 -685,155 -77.70 2,597 -76.51 0.0053
2013-11-12 2013-09-30 13F GRIFFON COM 398433102 881,754 -11,676 -1.31 11,057 10.01 0.0267
2013-08-01 2013-06-30 13F GRIFFON COM 398433102 893,430 893,430 10,051 0.0277
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.