Mario Gabelli's ROCK Position Overview
Mario Gabelli (via Gamco Investors, Inc. Et Al) currently holds 91,270 shares of Gibraltar Industries, Inc. (ROCK) worth $4.51 M, representing 0.04% of the portfolio. First purchased in 2015-Q4, this long-term strategic position has been held for 36 quarters.
Based on 13F filings, Mario Gabelli has maintained a strategic position in ROCK, demonstrating sustained confidence in this investment. Largest addition occurred in Q2 2020, adding 51,700 shares. Largest reduction occurred in Q1 2018, reducing 15,800 shares.
Analysis based on 13F filings available since 2013 Q2
Mario Gabelli's Gibraltar Industries (ROCK) Holding Value Over Time
Track share changes against reported price movement
Quarterly Gibraltar Industries (ROCK) Trades by Mario Gabelli
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -200 | Reduce 0.22% | 91,270 | $49.44 |
| Q3 2025 | -1,100 | Reduce 1.19% | 91,470 | $62.80 |
| Q2 2025 | +2,650 | Add 2.95% | 92,570 | $59.00 |
| Q1 2025 | +2,700 | Add 3.10% | 89,920 | $58.66 |
| Q4 2024 | -2,425 | Reduce 2.71% | 87,220 | $58.90 |
| Q3 2024 | -725 | Reduce 0.80% | 89,645 | $69.93 |
| Q2 2024 | +200 | Add 0.22% | 90,370 | $68.55 |
| Q1 2024 | -100 | Reduce 0.11% | 90,170 | $80.53 |
| Q4 2023 | -600 | Reduce 0.66% | 90,270 | $78.98 |
| Q3 2023 | -1,050 | Reduce 1.14% | 90,870 | $67.51 |
| Q2 2023 | +7,000 | Add 8.24% | 91,920 | $62.92 |
| Q1 2023 | +1,500 | Add 1.80% | 84,920 | $48.50 |
| Q4 2022 | -1,230 | Reduce 1.45% | 83,420 | $45.88 |
| Q3 2022 | +7,850 | Add 10.22% | 84,650 | $40.93 |
| Q2 2022 | +8,500 | Add 12.45% | 76,800 | $38.75 |
| Q1 2022 | +16,000 | Add 30.59% | 68,300 | $42.94 |
| Q4 2021 | +2,000 | Add 3.98% | 52,300 | $66.67 |
| Q3 2021 | +1,600 | Add 3.29% | 50,300 | $69.64 |
| Q2 2021 | +1,600 | Add 3.40% | 48,700 | $76.30 |
| Q1 2021 | -2,800 | Reduce 5.61% | 47,100 | $91.51 |
| Q3 2020 | -1,800 | Reduce 3.48% | 49,900 | $65.13 |
| Q2 2020 | +51,700 | New Buy | 51,700 | $48.01 |
| Q4 2018 | -6,900 | Sold Out | 0 | $0.00 |
| Q3 2018 | -10,300 | Reduce 59.88% | 6,900 | $45.65 |
| Q1 2018 | -15,800 | Reduce 47.88% | 17,200 | $33.84 |
| Q4 2017 | +18,000 | Add 120.00% | 33,000 | $33.00 |
| Q3 2017 | +6,000 | Add 66.67% | 15,000 | $31.13 |
| Q2 2017 | -2,000 | Reduce 18.18% | 9,000 | $35.67 |
| Q4 2016 | -2,600 | Reduce 19.12% | 11,000 | $41.64 |
| Q3 2016 | +1,100 | Add 8.80% | 13,600 | $37.13 |
| Q2 2016 | -1,800 | Reduce 12.59% | 12,500 | $31.60 |
| Q1 2016 | +6,400 | Add 81.01% | 14,300 | $28.60 |
| Q4 2015 | +7,900 | New Buy | 7,900 | $25.44 |
Mario Gabelli's Gibraltar Industries Investment FAQs
Mario Gabelli first purchased Gibraltar Industries, Inc. (ROCK) in Q4 2015, acquiring 7,900 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli has held Gibraltar Industries, Inc. (ROCK) for 36 quarters since Q4 2015.
Mario Gabelli's largest addition to Gibraltar Industries, Inc. (ROCK) was in Q2 2020, adding 51,700 shares worth $2.48 M.
According to the latest 13F filing for Q4 2025, Mario Gabelli's firm, Gamco Investors, Inc. Et Al, owns 91,270 shares of Gibraltar Industries, Inc. (ROCK), valued at approximately $4.51 M.
As of the Q4 2025 filing, Gibraltar Industries, Inc. (ROCK) represents approximately 0.04% of Mario Gabelli's publicly disclosed stock portfolio, making it one of their key holdings.
Mario Gabelli's peak holding in Gibraltar Industries, Inc. (ROCK) was 92,570 shares, as reported at the end of Q2 2025.