GIBRALTAR INDUSTRIES INC (ROCK) Institutional Shareholders
GIBRALTAR INDUSTRIES INC (ROCK) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.23B in ROCK holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of ROCK tracked by InsiderSet, reporting ownership valued at approximately $221.89M 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 $247.13M, representing an estimated gain of +11.37% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 68% of the total disclosed ROCK value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Fmr Llc, Alliancebernstein L.P., 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.
Institutional Holders
231
Total Reported Value
$1.23B
Largest Holder
Blackrock, Inc.
Largest Position
$221.89M
Insider Transactions (90d)
4
Latest Filing Quarter
Q2 2026
New Institutional Positions
81
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 4,919,877 | $221,886,453 | $247,125,422 | +$25,238,969 | +11.37% | |
| Fmr Llc | 0.01% | 4,432,059 | $176,706,193 | $222,622,324 | +$45,916,131 | +25.98% | |
| Alliancebernstein L.P. | 0.04% | 2,198,453 | $108,691,516 | $110,428,294 | +$1,736,778 | +1.60% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,705,997 | $68,018,300 | $85,692,229 | +$17,673,929 | +25.98% | |
| State Street Corp | 0.00% | 1,228,984 | $55,408,855 | $61,731,866 | +$6,323,011 | +11.41% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,323,731 | $52,777,155 | $66,491,008 | +$13,713,853 | +25.98% | |
| Vanguard Capital Management Llc | 0.00% | 1,322,342 | $52,721,776 | $66,421,239 | +$13,699,463 | +25.98% | |
| Barrow Hanley Mewhinney & Strauss Llc | 0.15% | 1,169,975 | $46,646,903 | $58,767,844 | +$12,120,941 | +25.98% | |
| Geode Capital Management, Llc | 0.00% | 777,629 | $31,009,619 | $39,060,305 | +$8,050,686 | +25.96% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.04% | 742,267 | $29,593,807 | $37,284,071 | +$7,690,264 | +25.99% | |
| Frontier Capital Management Co Llc | 0.28% | 688,272 | $27,441,405 | $34,571,903 | +$7,130,498 | +25.98% | |
| Boston Partners | 0.02% | 464,628 | $20,684,101 | $23,338,264 | +$2,654,163 | +12.83% | |
| First Wilshire Securities Management Inc | 4.49% | 499,923 | $19,931,930 | $25,111,132 | +$5,179,202 | +25.98% | |
| Sg Capital Management Llc | 1.59% | 389,410 | $17,562,391 | $19,560,064 | +$1,997,673 | +11.37% | |
| Charles Schwab Investment Management Inc | 0.00% | 440,483 | $17,562,057 | $22,125,461 | +$4,563,404 | +25.98% | |
| Morgan Stanley | 0.00% | 362,284 | $14,444,313 | $18,197,525 | +$3,753,212 | +25.98% | |
| Palisade Capital Management, Lp | 0.48% | 358,875 | $14,308,346 | $18,026,291 | +$3,717,945 | +25.98% | |
| Northern Trust Corp | 0.00% | 333,896 | $13,312,434 | $16,771,596 | +$3,459,162 | +25.98% | |
| Royce & Associates Lp | 0.11% | 288,541 | $11,504,130 | $14,493,414 | +$2,989,284 | +25.98% | |
| D. E. Shaw & Co., Inc. | 0.01% | 249,672 | $9,954,423 | $12,541,025 | +$2,586,602 | +25.98% | |
| Kennedy Capital Management Llc | 0.21% | 247,097 | $9,851,757 | $12,411,682 | +$2,559,925 | +25.98% | |
| Principal Financial Group Inc | 0.00% | 189,416 | $8,542,662 | $9,514,366 | +$971,704 | +11.37% | |
| Ubs Group Ag | 0.00% | 197,333 | $7,867,666 | $9,912,037 | +$2,044,371 | +25.98% | |
| Goldman Sachs Group Inc | 0.00% | 194,713 | $7,763,207 | $9,780,434 | +$2,017,227 | +25.98% | |
| Vanguard Fiduciary Trust Co | 0.00% | 193,746 | $7,724,653 | $9,731,862 | +$2,007,209 | +25.98% | |
| Bank Of New York Mellon Corp | 0.00% | 169,626 | $7,650,154 | $8,520,314 | +$870,160 | +11.37% | |
| Invenomic Capital Management Lp | 0.34% | 183,072 | $7,299,081 | $9,195,707 | +$1,896,626 | +25.98% | |
| New York State Common Retirement Fund | 0.01% | 146,525 | $6,608,278 | $7,359,951 | +$751,673 | +11.37% | |
| Invesco Ltd. | 0.00% | 158,329 | $6,312,577 | $7,952,866 | +$1,640,289 | +25.98% | |
| Castleknight Management Lp | 0.28% | 150,500 | $6,000,435 | $7,559,615 | +$1,559,180 | +25.98% | |
| Bank Of America Corp | 0.00% | 139,274 | $5,552,854 | $6,995,733 | +$1,442,879 | +25.98% | |
| Rbf Capital, Llc | 0.26% | 123,099 | $4,907,957 | $6,183,263 | +$1,275,306 | +25.98% | |
| Systematic Financial Management Lp | 0.11% | 118,468 | $4,723,374 | $5,950,648 | +$1,227,274 | +25.98% | |
| Citadel Advisors Llc | 0.00% | 118,449 | $4,722,562 | $5,949,693 | +$1,227,131 | +25.98% | |
| Balyasny Asset Management L.P. | 0.01% | 116,776 | $4,655,859 | $5,865,658 | +$1,209,799 | +25.98% | |
| Gamco Investors, Inc. Et Al | 0.04% | 105,795 | $4,218,047 | $5,314,083 | +$1,096,036 | +25.98% | |
| Public Sector Pension Investment Board | 0.01% | 105,735 | $4,215,654 | $5,311,069 | +$1,095,415 | +25.98% | |
| Congruence Capital, Llc | 1.41% | 105,371 | $4,201,142 | $5,292,785 | +$1,091,643 | +25.98% | |
| Aqr Capital Management Llc | 0.00% | 96,033 | $3,828,835 | $4,823,738 | +$994,903 | +25.98% | |
| Primecap Management Co/Ca/ | 0.00% | 95,600 | $3,811,572 | $4,801,988 | +$990,416 | +25.98% | |
| Rhumbline Advisers | 0.00% | 89,165 | $3,554,988 | $4,478,758 | +$923,770 | +25.99% | |
| Ameriprise Financial Inc | 0.00% | 81,312 | $3,241,910 | $4,084,302 | +$842,392 | +25.98% | |
| Nuveen, Llc | 0.00% | 72,781 | $2,901,779 | $3,655,790 | +$754,011 | +25.98% | |
| Victory Capital Management Inc | 0.00% | 64,336 | $2,901,554 | $3,231,597 | +$330,043 | +11.37% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | 66,105 | $2,635,606 | $3,320,454 | +$684,848 | +25.98% | |
| Legal & General Group Plc | 0.00% | 63,914 | $2,548,252 | $3,210,400 | +$662,148 | +25.98% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 63,817 | $2,544,384 | $3,205,528 | +$661,144 | +25.98% | |
| Expect Equity Llc | 2.43% | 63,467 | $2,530,429 | $3,187,947 | +$657,518 | +25.98% | |
| Wesbanco Bank Inc | 0.06% | 55,328 | $2,495,293 | $2,779,125 | +$283,832 | +11.37% | |
| Edgestream Partners, L.P. | 0.08% | 61,019 | $2,432,828 | $3,064,984 | +$632,156 | +25.98% |
Frequently asked questions about ROCK
Who owns the most ROCK stock?
The largest holders of ROCK are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for GIBRALTAR INDUSTRIES INC (ROCK).
Is ROCK widely held by superinvestors?
Many widely followed stocks like ROCK appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ROCK is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.