Gibraltar Industries (ROCK) Held by Superinvestors
GIBRALTAR INDUSTRIES INC (ROCK) is currently held by 2 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $3.14M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Renaissance Technologies LLC is currently the largest disclosed institutional shareholder of ROCK tracked by InsiderSet, reporting ownership valued at approximately $3.01M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $2.16M, representing an estimated loss of -28.00% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed ROCK value among the investors covered in this analysis. Major shareholders include Renaissance Technologies LLC, Turtle Creek Asset Management, and several other long-term asset managers with concentrated positions in GIBRALTAR INDUSTRIES INC (ROCK).
This page ranks the largest institutional ROCK shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | Jim Simons | 0.00% | 66,668 | $3,006,727 | $2,164,710 | -$842,017 | -28.00% |
| Turtle Creek Asset Management | Andrew Brenton | 0.01% | 3,000 | $135,300 | $97,410 | -$37,890 | -28.00% |
Frequently asked questions about ROCK
Who are the largest superinvestors holding ROCK?
The largest superinvestors holding ROCK in the latest SEC Form 13F filings include Renaissance Technologies LLC and Turtle Creek Asset Management. InsiderSet ranks these superinvestors by their latest reported ROCK position.
What does the ROCK superinvestors page include?
This page tracks ROCK positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. GIBRALTAR INDUSTRIES INC (ROCK) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold ROCK?
InsiderSet currently tracks 2 superinvestors reporting ROCK holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own ROCK.
How much ROCK stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $3.14M in ROCK holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value, and it covers the curated superinvestors on this page rather than every institutional filer.
When were ROCK superinvestor holdings last updated?
The latest ROCK superinvestor holdings on InsiderSet are based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time holdings.
Are superinvestor ROCK holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by these superinvestors as of the end of the reporting quarter. A superinvestor may have changed its ROCK position after the reporting date.
Are superinvestors buying or selling ROCK?
Buying and selling can be analyzed by comparing ROCK positions across consecutive 13F reporting periods. InsiderSet's ROCK Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ROCK ownership changes.
How have superinvestor ROCK holdings changed over time?
InsiderSet tracks ROCK holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.