Gibraltar Industries

ROCK • NASDAQ

Gibraltar Industries is a construction company in the industrials sector on NASDAQ, led by William T. Bosway, with a market cap of $1.5B. As of Q3 2025, 101% of shares are held by 259 institutional investors, with BlackRock, Inc. as the largest holder at 17.73%.

CEOWilliam T. Bosway

Market Cap$1.5B

Construction

Industrials

Employees2.1K

Websitegibraltar1.com

Country

United States of America

Overview

Overview of institutional ownership in ROCK as of Q3 2025 with a market cap of $1.9B

All Institutions

Institutions: 259
Value Held: $1.9B
Shares Held: 29.8M
Avg Position: $7.2M
Median Position: $551.1K

Hedge Funds

Hedge Funds: 23
Value Held: $50.2M
Shares Held: 799.6K
Avg Position: $2.2M
Median Position: $684.0K

Ownership Breakdown

Institutional (non-HF)

98.36%

$1.8B

Hedge Funds

2.71%

$50.2M

Retail & Other

Based on market cap of $1.9B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in ROCK as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$328.6M 0.01% of portfolio	17.73% 5.2M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
FMR LLC Institution	-	$195.6M 0.01% of portfolio	10.56% 3.1M shares	≤ Q2 2013 Held for 12y 5m+	$1.92T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$182.1M 0.00% of portfolio	9.83% 2.9M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
DIMENSIONAL FUND ADVISORS LP Long Only Manager	David Paul Butler CEO	$105.8M 0.02% of portfolio	5.71% 1.7M shares	≤ Q2 2013 Held for 12y 5m+	$466.32B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$80.9M 0.00% of portfolio	4.37% 1.3M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
BARROW HANLEY MEWHINNEY & STRAUSS LLC Long Only Manager	Cory Lawrence Martin CEO	$59.9M 0.19% of portfolio	3.23% 953.6K shares	≤ Q2 2013 Held for 12y 5m+	$31.4B
VICTORY CAPITAL MANAGEMENT INC Long Only Manager	David Craig Brown CEO	$56.7M 0.04% of portfolio	3.06% 902.6K shares	Q1 2018 Held for 7y 8m	$158.22B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$46.3M 0.00% of portfolio	2.50% 736.8K shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
SILVERCREST ASSET MANAGEMENT GROUP LLC RIA/Wealth	Richard Ralston Hough CEO	$43.0M 0.28% of portfolio	2.32% 684.2K shares	Q1 2018 Held for 7y 8m	$15.1B
ALLIANCEBERNSTEIN L.P. Long Only Manager	Seth Perry Bernstein CEO	$33.7M 0.01% of portfolio	1.82% 536.7K shares	≤ Q2 2013 Held for 12y 5m+	$317.45B

Net Capital Flow

Institutional buying and selling activity for ROCK in Q3 2025

Traded: +$20.8M
Buyers: 126
Sellers: 137
Total Bought: +$183.9M
Total Sold: −$163.1M
Avg Position: $6.3M

Biggest Buyers

Institution	Net Bought	Current Position
ALLIANCEBERNSTEIN L.P. Long Only Manager	+$29.5M +469.1K shares	$33.7M 536.7K shares
FMR LLC Institution	+$26.2M +417.7K shares	$195.6M 3.1M shares
FRONTIER CAPITAL MANAGEMENT CO LLC Long Only Manager	+$23.6M +375.4K shares	$23.6M 375.4K shares
SEGALL BRYANT & HAMILL Long Only Manager	+$22.8M +362.4K shares	$22.8M 362.4K shares
R ROBECOSAM AG Institution	+$11.3M +180.0K shares	$11.3M 180.0K shares
FIRST WILSHIRE SECURITIES MANAGEMENT INC RIA/Wealth	+$11.0M +175.2K shares	$11.0M 175.2K shares
C CSM Advisors, LLC Institution	+$5.0M +80.1K shares	$5.0M 80.1K shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$4.5M +71.0K shares	$11.6M 184.7K shares
Clayton Partners LLC Hedge Fund•Long/Short	+$4.2M +66.6K shares	$4.2M 66.6K shares
GOLDMAN SACHS GROUP INC Institution	+$4.0M +64.3K shares	$10.4M 165.9K shares

Biggest Sellers

Institution	Net Sold	Current Position
ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant	−$20.9M −332.4K shares	$5.1M 81.7K shares
VICTORY CAPITAL MANAGEMENT INC Long Only Manager	−$13.2M −210.0K shares	$56.7M 902.6K shares
Allspring Global Investments Holdings, LLC Long Only Manager	−$11.2M −171.5K shares	$21.8M 333.8K shares
GEODE CAPITAL MANAGEMENT LLC ETF Provider	−$8.0M −127.2K shares	$46.3M 736.8K shares
WELLINGTON MANAGEMENT CO LLP Long Only Manager	−$7.1M −112.7K shares	$26.2M 417.0K shares
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	−$6.6M −105.4K shares	$6.6M 104.6K shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$5.8M −93.0K shares	$735.2K 11.7K shares
M Man Group plc Institution	−$5.5M −87.9K shares	$782.0K 12.5K shares
J JANE STREET GROUP, LLC Institution	−$5.2M −88.5K shares	Sold Off 0 shares
MORGAN STANLEY RIA/Wealth	−$4.5M −72.4K shares	$22.2M 353.5K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited ROCK in Q3 2025

New Positions: 18
New Value: $81.1M
Exited Positions: 34
Exited Value: $30.5M

New Positions

Institution	Position Value
FRONTIER CAPITAL MANAGEMENT CO LLC Long Only Manager	$23.6M 375.4K shares
SEGALL BRYANT & HAMILL Long Only Manager	$22.8M 362.4K shares
R ROBECOSAM AG Institution	$11.3M 180.0K shares
FIRST WILSHIRE SECURITIES MANAGEMENT INC RIA/Wealth	$11.0M 175.2K shares
C CSM Advisors, LLC Institution	$5.0M 80.1K shares
Clayton Partners LLC Hedge Fund•Long/Short	$4.2M 66.6K shares
C Covalent Partners LLC Hedge Fund•Value	$1.7M 27.0K shares
M MOODY NATIONAL BANK TRUST DIVISION Institution	$745.8K 11.9K shares
JOHNSON INVESTMENT COUNSEL INC RIA/Wealth	$263.1K 4.2K shares
Uniting Wealth Partners, LLC RIA/Wealth	$251.2K 4.0K shares

Exited Positions

Institution	Previous Position
J JANE STREET GROUP, LLC Institution	$5.2M 88.5K shares
C Cubist Systematic Strategies, LLC Institution	$4.0M 67.5K shares
W Winton Capital Group Ltd Institution	$3.4M 57.5K shares
Empowered Funds, LLC ETF Provider	$2.5M 42.6K shares
T TEXAS PERMANENT SCHOOL FUND Institution	$2.2M 37.2K shares
C CLARK ESTATES INC/NY Institution	$2.1M 35.0K shares
B Brevan Howard Capital Management LP Institution	$1.7M 28.1K shares
Jackson Creek Investment Advisors LLC Long Only Manager	$1.6M 27.2K shares
R ROOF EIDAM & MAYCOCK/ADV RIA/Wealth	$1.2M 19.8K shares
T TWINBEECH CAPITAL LP Hedge Fund•Quant	$863.8K 14.6K shares

Options Activity

Institutions with the largest Call and Put options positions in ROCK as of Q3 2025

Call Positions: 3
Call Value: $1.5M
Put Positions: 2
Put Value: $1.3M

Call Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$590.3K 94.0 contracts
W WOLVERINE TRADING, LLC Institution	$507.9K 80.0 contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$395.6K 63.0 contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$1.3M 201.0 contracts
Caption Management, LLC Hedge Fund•Long/Short	$62.8K 10.0 contracts

Most Committed Institutions

Institutions with ROCK as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
C Covalent Partners LLC Hedge Fund•Value	William Duncan Benjes Managing Partner	12.02% $1.7M	0.09% 27.0K shares	Q3 2025 Held for 2 months	$14.1M
Clayton Partners LLC Hedge Fund•Long/Short	Alex Gates CCO	3.17% $4.2M	0.23% 66.6K shares	Q3 2025 Held for 2 months	$131.9M
FIRST WILSHIRE SECURITIES MANAGEMENT INC RIA/Wealth	Howard Haoming Lu CEO	2.93% $11.0M	0.59% 175.2K shares	Q3 2025 Held for 2 months	$375.8M
E Expect Equity LLC Institution	-	2.18% $2.2M	0.12% 35.6K shares	Q4 2024 Held for 11 months	$102.4M
PALISADE CAPITAL MANAGEMENT LLC/NJ Long Only Manager	Alison Anne Berman CEO	0.78% $25.4M	1.37% 403.8K shares	Q2 2020 Held for 5y 5m	$3.3B
Cascade Investment Advisors, Inc. RIA/Wealth	Michelle H Rand CCO	0.73% $1.2M	0.06% 19.1K shares	Q4 2023 Held for 1y 11m	$165.1M
Phocas Financial Corp. Long Only Manager	William Franz Kim Schaff CEO	0.46% $3.5M	0.19% 56.1K shares	Q2 2025 Held for 5 months	$771.4M
BFSG, LLC RIA/Wealth	Martina Marie Schackman President	0.40% $4.1M	0.22% 65.8K shares	Q1 2024 Held for 1y 8m	$1.0B
R RBF Capital, LLC Institution	-	0.36% $7.7M	0.42% 123.1K shares	≤ Q2 2013 Held for 12y 5m+	$2.2B
SEGALL BRYANT & HAMILL Long Only Manager	Carolyn B Goldhaber President	0.30% $22.8M	1.23% 362.4K shares	Q3 2025 Held for 2 months	$7.5B

Hedge Fund Spotlight

Discover hedge funds investing in ROCK

Entropy Technologies, LP

Hedge Fund • Quant Macro

Portfolio ManagerArjun Rajan Modi

Portfolio Value: $1.3B
Positions: 787
Last Reported: Q3 2025

Sector Allocation

Position in Gibraltar Industries

Market Value: $213.9K
Shares Held: 3.4K
Portfolio Weight: 0.02%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 Micron Technology MU	Semiconductors Technology	$13.2M	0.98%
2 Chevron CVX	Oil & Gas Integrated Energy	$13.0M	0.97%
3 Visa V	Financial - Credit Services Financial Services	$13.0M	0.97%