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Compare · GGB vs ROCK

GGB vs ROCK

Side-by-side comparison of Gerdau S.A. (GGB) and Gibraltar Industries Inc. (ROCK): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both GGB and ROCK operate in Steel/Iron Ore (Industrials), so they compete in similar markets.
  • GGB is the larger of the two at $9.32B, about 7.3x ROCK ($1.28B).
  • Over the past year, GGB is up 65.0% and ROCK is down 31.8% - GGB leads by 96.8 points.
  • ROCK has hit the wire 11 times in the past 4 weeks while GGB has been quiet.
  • GGB has more recent analyst coverage (10 ratings vs 3 for ROCK).
PerformanceGGB+65.03%ROCK-31.78%
2025-07-18+0.00%2026-07-17
MetricGGBROCK
Company
Gerdau S.A.
Gibraltar Industries Inc.
Price
$4.72+0.00%
$43.23-3.65%
Market cap
$9.32B
$1.28B
1M return
+2.28%
+4.23%
1Y return
+65.03%
-31.78%
Industry
Steel/Iron Ore
Steel/Iron Ore
Exchange
NYSE
NASDAQ
IPO
1993
News (4w)
0
11
Recent ratings
10
3
GGB

Gerdau S.A.

Gerdau S.A. provides steel products and services. It operates through four segments: Brazil Business, North America Business, South America Business, and Special Steel Business. The company offers semi-finished products, including billets, blooms, and slabs; common long rolled products, such as rebars, wire rods, merchant bars, light shapes, and profiles to the construction and manufacturing industries; finished industrial products, including commercial rolled-steel bars, and light profiles and wires; agricultural products that include stakes and smooth wire products; and drawn products comprises barbed and barbless fence wires, galvanized wires, fences, concrete reinforcing wire meshes, nails, and clamps. It also produces special steel products used in auto parts, light and heavy vehicles, and agricultural machinery, as well as the oil and gas, wind energy, machinery and equipment, mining and rail, and other markets. In addition, the company offers flat products, including hot rolled coils and heavy plates; and resells flat steel products, as well as mines and produces iron ore. It sells its products through independent distributors, direct sales from the mills, and its retail network. The company was founded in 1901 and is based in Sao Paulo, Brazil. Gerdau S.A. is a subsidiary of Metalúrgica Gerdau S.A.

ROCK

Gibraltar Industries Inc.

Gibraltar Industries, Inc. manufactures and distributes building products for the renewable energy, conservation, residential, and infrastructure markets in North America and Asia. It operates through three segments: Renewable Energy and Conservation, Residential Products, and Infrastructure Products. The Renewable Energy and Conservation segment designs, engineers, manufactures, and installs solar racking and electrical balance of systems, greenhouses, and botanical extraction systems. The Residential Products segment offers roof and foundation ventilation products and accessories, such as solar powered units; mail and electronic package solutions, including single mailboxes, cluster style mail and parcel boxes for single and multi-family housing, and electronic package locker systems; roof edgings and flashings; soffits and trims; drywall corner beads; metal roofing products and accessories; rain dispersion products comprising gutters and accessories; and exterior retractable awnings. This segment also provides electronic parcel lockers, rooftop safety kits, chimney caps, heat trace coils and exterior products, remote-controlled deck awnings for sun protection, and solar-powered ventilation products. The Infrastructure Products segment offers expansion joints, structural bearings, rubber pre-formed seals and other sealants, elastomeric concrete, and bridge cable protection systems. It serves solar developers, growers of food and plants, home improvement retailers, wholesalers, distributors, and contractors. Gibraltar Industries, Inc. was founded in 1972 and is headquartered in Buffalo, New York.

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