§ BUILDING
USD · BuildingROCK
GIBRALTAR INDUSTRIES INC
USDSector · BuildingBeta · 1.26
§ 01 · PRICE
Price action
1D5D1M6MYTD1YMAX
§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY
13F FLOW
146 increased/new, 81 decreased/exited (13F)
AC 13F Analysis
§ 04 · FUNDAMENTALS · THE BOOKS
| P/B | 1.54 | EPS (TTM) | -1.51 |
§ 05 · WHO OWNS IT
Top institutional holders
| Fund | Shares | % port | Δ Q/Q |
|---|---|---|---|
| BlackRock, Inc. | 5.0M | 0.0% | +2% |
| Fidelity Management | 4.4M | 0.0% | +20% |
| ALLIANCEBERNSTEIN L.P. | 2.2M | 0.0% | +28% |
| Dimensional Fund Advisors | 1.7M | 0.0% | +0% |
| State Street | 1.3M | 0.0% | −1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3M | n/a | n/a |
◇ AC INTELLIGENCE
Top institutional owners for ROCK as of the most recent 13F reporting period (Q1 2026 · Period ended Mar 31). Δ Q/Q reflects share-count change vs. the prior filing — positive green means adding, negative red means trimming. Cross-reference with the ownership-mix bars below to see which strategy cohort is driving the flow.
§ 06 · WHO OWNS IT · BY STRATEGY
OTHER96.9% · 0 holders
OTHER1.0% · 139 holders
QUALITY / COMPOUNDER0.9% · 18 holders
PASSIVE / INDEX0.7% · 10 holders
DEALER / BANK0.3% · 26 holders
DEEP VALUE0.2% · 2 holders
INCOME / DEFENSIVE0.1% · 19 holders
SYSTEMATIC / QUANT0.0% · 8 holders
ACTIVIST0.0% · 1 holder
TACTICAL / MACRO0.0% · 3 holders
GROWTH / MOMENTUM0.0% · 1 holder
◇ AC INTELLIGENCE
Ownership mix by behavioral cohort. Top bars indicate which style of capital dominates the float — passive indexing, quality compounders, dealer/bank, systematic quant, etc. Big quality-compounder share means concentrated active conviction; heavy passive share means flows are dictated by index rebalances, not fundamentals.
§ 07 · INSIDER ACTIVITY · LAST 180 DAYS
NO INSIDER FILINGS
◇ AC INTELLIGENCE
No Form 4 filings on record for ROCK in the last 180 days.
§ 08 · COVERAGE · OUR RECENT NOTES
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