Position in ROCK
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$4,357,787
+$139,741 QoQ
Shares Held
96,625
-8.7% QoQ
Ownership
0.326%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
#42
of 243 holders
Holding Since
Jun 2020
25 quarters on record
Voting authority
Sole 94%
Shared 0%
None 6%
Common Shares in ROCK Over Time
Shares Held
Position Value (USD)
Position in Building Products & Equipment
Industrials · as of Jun 30, 2026GAMCO INVESTORS, INC. ET AL holds $134,269,583 across 8 Building Products & Equipment names. ROCK ranks #7 (3.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GFF |
Griffon Corp
|
500,440 | $48,807,913 | |
| 2 | JCI |
Johnson Controls International plc
|
322,740 | $47,155,541 | |
| 3 | FBIN |
Fortune Brands Innovations, Inc.
|
187,194 | $10,276,950 | |
| 4 | TREX |
Trex Co Inc
|
191,413 | $9,578,306 | |
| 5 | TT |
Trane Technologies plc
|
15,991 | $7,854,139 | |
| 6 | CARR |
CARRIER GLOBAL Corp
|
76,120 | $5,583,402 | |
| 7 | ROCK |
Gibraltar Industries, Inc.
This page
|
96,625 | $4,357,787 | |
| 8 | APOG |
Apogee Enterprises, Inc.
|
14,332 | $655,545 |
All Filings in ROCK
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $4,357,787 | 96,625 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $4,218,046 | 105,795 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $4,512,388 | 91,270 | Shares | Sole | 2026-02-05 | |
| 2025-09-30 | $5,744,316 | 91,470 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $5,461,630 | 92,570 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $5,274,707 | 89,920 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $5,137,258 | 87,220 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $6,268,874 | 89,645 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $6,194,863 | 90,370 | Shares | Sole | 2024-08-13 | |
| 2024-03-31 | $7,261,390 | 90,170 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $7,129,524 | 90,270 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $6,134,633 | 90,870 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $5,783,606 | 91,920 | Shares | Sole | 2023-08-15 | |
| 2023-03-31 | $4,118,620 | 84,920 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $3,827,309 | 83,420 | Shares | Sole | 2023-02-15 | |
| 2022-09-30 | $3,464,724 | 84,650 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $2,976,000 | 76,800 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $2,933,485 | 68,300 | Shares | Sole | 2022-05-18 | |
| 2021-12-31 | $3,487,364 | 52,300 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $3,503,395 | 50,300 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $3,716,297 | 48,700 | Shares | Sole | 2021-08-13 | |
| 2021-03-31 | $4,310,121 | 47,100 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $3,589,806 | 49,900 | Shares | Sole | 2021-02-05 | |
| 2020-09-30 | $3,250,486 | 49,900 | Shares | Sole | 2020-11-06 | |
| 2020-06-30 | $2,482,117 | 51,700 | Shares | Sole | 2020-08-13 | |
| No filing history on record for this holder in this stock. | ||||||