ROCK Gibraltar Industries Inc.
Gibraltar Industries Inc. (ROCK) Institutional Ownership
What the institutions did with ROCK last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 4.9M | 15.8% |
| FMR LLC | 4.4M | 14.3% |
| ALLIANCEBERNSTEIN L.P. | 2.2M | 7.2% |
| DIMENSIONAL FUND ADVISORS LP | 1.5M | 4.8% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.3M | 4.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3M | 4.1% |
| STATE STREET CORP | 1.2M | 3.9% |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | 984.9K | 3.2% |
| FRONTIER CAPITAL MANAGEMENT CO LLC | 830.3K | 2.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 822.9K | 2.6% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 805.6K | 2.6% |
| SEGALL BRYANT & HAMILL, LLC | 587.5K | 1.9% |
| Simcoe Capital Management, LLC | 494.4K | 1.6% |
| Boston Partners | 464.6K | 1.5% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 445.3K | 1.4% |
| ROYCE & ASSOCIATES LP | 402.4K | 1.3% |
| SG Capital Management LLC | 389.4K | 1.3% |
| MORGAN STANLEY | 357.2K | 1.1% |
| NORTHERN TRUST CORP | 353.3K | 1.1% |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC | 268.8K | 0.9% |
| UBS Group AG | 254.7K | 0.8% |
| Balyasny Asset Management L.P. | 243.4K | 0.8% |
| KENNEDY CAPITAL MANAGEMENT LLC | 240.1K | 0.8% |
| D. E. Shaw & Co., Inc. | 224.7K | 0.7% |
| Invenomic Capital Management LP | 203.4K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Simcoe Capital Management, LLC | New | 0 | 494.4K | +494.4K |
| T. Rowe Price Investment Management, Inc. | Sold Out | 467.0K | 0 | -467.0K |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC | Reduced | 499.9K | 268.8K | -231.2K |
| Boston Partners | Reduced | 686.6K | 464.6K | -222.0K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1.7M | 1.5M | -207.0K |
| PALISADE CAPITAL MANAGEMENT, LP | Reduced | 358.9K | 168.4K | -190.4K |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | Reduced | 1.2M | 984.9K | -185.1K |
| SEGALL BRYANT & HAMILL, LLC | Increased | 431.0K | 587.5K | +156.6K |
| SG Capital Management LLC | Increased | 233.8K | 389.4K | +155.6K |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Increased | 688.3K | 830.3K | +142.0K |
| BlackRock, Inc. | Reduced | 5.0M | 4.9M | -129.1K |
| Balyasny Asset Management L.P. | Increased | 116.8K | 243.4K | +126.6K |
| NORDEA INVESTMENT MANAGEMENT AB | Sold Out | 117.5K | 0 | -117.5K |
| STATE STREET CORP | Reduced | 1.3M | 1.2M | -116.7K |
| Pacer Advisors, Inc. | Sold Out | 114.9K | 0 | -114.9K |
| ROYCE & ASSOCIATES LP | Increased | 288.5K | 402.4K | +113.8K |
| Congruence Capital, LLC | Sold Out | 105.4K | 0 | -105.4K |
| MONIMUS CAPITAL MANAGEMENT, LP | New | 0 | 91.9K | +91.9K |
| Man Group plc | New | 0 | 83.3K | +83.3K |
| Squarepoint Ops LLC | New | 0 | 83.1K | +83.1K |
| CITADEL ADVISORS LLC | Increased | 118.4K | 191.1K | +72.7K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 15.5K | 85.9K | +70.4K |
| GOLDMAN SACHS GROUP INC | Reduced | 194.7K | 125.1K | -69.6K |
| Edgestream Partners, L.P. | Increased | 61.0K | 125.6K | +64.6K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 96.0K | 159.6K | +63.6K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.