ROCK Institutional Ownership
Who owns Gibraltar Industries, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 245 funds reported holding ROCK at Jun 30, 2026, together owning 105.0% of the company.
- ▲140 buying vs 111 selling
- ●Held by funds +0.4 pts
- ▲Funds holding +16
- ▲Superinvestors: 3 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 245 | 229 | +7.0% |
| In funds' top 10 | 0 | 1 | −100.0% |
| 13F shares | 31.2M | 31.1M | +0.4% |
| Held by funds | 105.0% | 104.6% | +0.4 pts |
| New positions | 51 | 32 | +59.4% |
| Increased | 89 | 91 | −2.2% |
| Reduced | 78 | 69 | +13.0% |
| Sold out | 33 | 61 | −45.9% |
| Calls (shares) | 0 | 0 | – |
| Puts (shares) | 0 | 0 | – |
| Put/call ratio | – | – | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in ROCK
All superinvestors →
Who owns ROCK
share of fund held shares- Index and passive funds39.7%
- Active managers and hedge funds53.4%
- Banks and brokers5.4%
- Pensions, insurers and other1.5%
The top 10 holders own 62.8% of all ROCK shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
53 funds changed their position- CenterBook Partners LPNew+127K sh
- Deroy & Devereaux Private Investment Counsel IncNew+63K sh
- Principal Financial Group IncTrimmed−48K sh
- Assenagon Asset Management S.A.Sold out−32K sh
- Skylands Capital, LLCAdded+31K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 16.57% | 4.9M | $222M | −129K |
| 2 | Fmr LLC | 14.99% | 4.4M | $201M | +17K |
| 3 | Alliancebernstein L.P. | 7.52% | 2.2M | $89M | +34K |
| 4 | Dimensional Fund Advisors LP | 5.05% | 1.5M | $67.6M | −207K |
| 5 | Vanguard Capital Management LLC | 4.49% | 1.3M | $60.1M | +10K |
| 6 | Vanguard Portfolio Management LLC | 4.35% | 1.3M | $58.2M | −33K |
| 7 | State Street Corp | 4.14% | 1.2M | $55.4M | −117K |
| 8 | Barrow Hanley Mewhinney & Strauss LLC | 3.32% | 985K | $44.4M | −185K |
| 9 | Frontier Capital Management Co LLC | 2.80% | 830K | $37.4M | +142K |
| 10 | Geode Capital Management, LLC | 2.77% | 823K | $37.1M | +45K |
- Simcoe Capital Management, LLC+494K sh+$22.3M
- Segall Bryant & Hamill, LLC+157K sh+$7.1M
- SG Capital Management LLC+156K sh+$7M
- Frontier Capital Management Co LLC+142K sh+$6.4M
- Balyasny Asset Management L.P.+127K sh+$5.7M
- Royce & Associates LP+114K sh+$5.1M
- Monimus Capital Management, LP+92K sh+$4.1M
- Man Group plc+83K sh+$3.8M
- T. Rowe Price Investment Management, Inc.−467K sh−$18.6M
- First Wilshire Securities Management Inc−231K sh−$10.4M
- Boston Partners−222K sh−$9.9M
- Dimensional Fund Advisors LP−207K sh−$9.3M
- Palisade Capital Management, LP−190K sh−$8.6M
- Barrow Hanley Mewhinney & Strauss LLC−185K sh−$8.3M
- BlackRock, Inc.−129K sh−$5.8M
- State Street Corp−117K sh−$5.3M
ROCK institutional ownership FAQ
Who owns the most ROCK stock?
In Q2 2026 13F filings the largest holder of ROCK was BlackRock, Inc., followed by Fmr LLC and Alliancebernstein L.P.. Index fund managers are usually the biggest holders of large companies.
What percentage of ROCK is owned by institutions?
Funds that file 13F reports held 105.0% of ROCK's shares at Jun 30, 2026, compared with 104.6% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying ROCK?
In Q2 2026, 140 funds bought ROCK (51 of them new positions) and 111 sold (33 sold out completely). Among well known investors, 3 added and 1 cut. Our fund sentiment for ROCK is bullish.
What is ROCK's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this ROCK ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.