Gibraltar Industries ROCK Institutional Ownership

NASDAQ ROCK

$38.74 +0.33 (+0.86%)

As of: Oct 21, 2026 · 3:59 PM EDT

Institutions by Trading Activity

245 Institutions

Increased 143 58.4%

Unchanged 21 8.6%

Reduced 81 33.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

90.35%

▲+1.85 pp QoQ

Shares Held by Institutions

31.15Mn

of 34.48Mn outstanding

▲+2.09% QoQ

Shares Outstanding

34.48Mn

3.33Mn held outside 13F filers

Institutional Investors

245

filed 13F for Jun 2026

▲+19 vs prior quarter

Net Shares Added (QoQ)

+638.41K

accumulated since last quarter

Value of Holdings

$1.20Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Gibraltar Industries, Inc. (NASDAQ:ROCK) was held by 245 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

Their combined stake equaled 90.35% of outstanding shares in Q2 2026, up from 88.50% in Q1 2026.
Total shares held in ROCK rose 2.09% from Q1 2026; the number of holders fell 7.20% from Q2 2025.
Looking at the 245 holders of ROCK individually, 143 added to their positions, 81 reduced their stakes and 21 left their positions unchanged.
Combined, institutional investors held 31.15Mn shares of ROCK as of Q2 2026, up 638.41K from the prior quarter and up 2.02Mn from a year earlier.
BlackRock, Inc. led 13F holders of ROCK with 4.92Mn shares as of June 30, 2026, or 14.27% of shares outstanding.
Among existing holders, the largest additions to Gibraltar Industries in Q2 2026 came from SG Capital Management LLC (+155.6K shares), Frontier Capital Management Co LLC (+142K shares), Balyasny Asset Management L.P. (+126.63K shares), Royce & Associates LP (+113.82K shares) and Citadel Advisors LLC (+72.66K shares).
The biggest cuts to ROCK positions during Q2 2026 came from First Wilshire Securities Management Inc (-231.15K shares), Boston Partners (-222K shares), Dimensional Fund Advisors LP (-206.97K shares), Palisade Capital Management, LP (-190.44K shares) and Barrow Hanley Mewhinney & Strauss LLC (-185.06K shares).
According to Business Quant data, the leading holders of ROCK for Q2 2026 were BlackRock, Inc. (4.92Mn shares), FMR LLC (4.45Mn shares), AllianceBernstein L.P. (2.23Mn shares), Dimensional Fund Advisors LP (1.5Mn shares), Vanguard Capital Management LLC (1.33Mn shares), Vanguard Portfolio Management LLC (1.29Mn shares), State Street Corp (1.23Mn shares), Barrow Hanley Mewhinney & Strauss LLC (984.92K shares), Frontier Capital Management Co LLC (830.27K shares) and Geode Capital Management, LLC (822.87K shares).

Form 13F Holdings

245 Institutional Holders

Report period 30 Jun, 2026

Total shares held 31.15Mn

Of outstanding 90.35%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	4,919,877	14.27%	▼129,110	-2.56%	$221.89Mn
2	FMR LLC	0000315066	4,449,287	12.90%	▲17,228	+0.39%	$200.66Mn
3	ALLIANCEBERNSTEIN L.P.	0001109448	2,232,832	6.48%	▲34,379	+1.56%	$89.02Mn
4	DIMENSIONAL FUND ADVISORS LP	0000354204	1,499,025	4.35%	▼206,972	-12.13%	$67.61Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,332,679	3.86%	▲10,337	+0.78%	$60.10Mn
6	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,290,636	3.74%	▼33,095	-2.50%	$58.21Mn
7	State Street Corp	0000093751	1,228,984	3.56%	▼116,681	-8.67%	$55.41Mn
8	BARROW HANLEY MEWHINNEY & STRAUSS LLC	0000313028	984,916	2.86%	▼185,059	-15.82%	$44.42Mn
9	FRONTIER CAPITAL MANAGEMENT CO LLC	0000351173	830,272	2.41%	▲142,000	+20.63%	$37.45Mn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	822,869	2.39%	▲45,240	+5.82%	$37.12Mn
11	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	0001705339	805,620	2.34%	▲63,353	+8.54%	$36.33Mn
12	SEGALL BRYANT & HAMILL, LLC	0001006378	587,545	1.70%	▲587,545	0.00%	$26.50Mn
13	Simcoe Capital Management, LLC	0001633362	494,365	1.43%	▲494,365	0.00%	$22.30Mn
14	Boston Partners	0001386060	464,628	1.35%	▼221,997	-32.33%	$20.68Mn
15	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	445,326	1.29%	▲4,843	+1.10%	$20.08Mn
16	ROYCE & ASSOCIATES LP	0000906304	402,365	1.17%	▲113,824	+39.45%	$18.15Mn
17	SG Capital Management LLC	0001510099	389,410	1.13%	▲155,602	+66.55%	$17.56Mn
18	Morgan Stanley	0000895421	357,210	1.04%	▼5,074	-1.40%	$16.11Mn
19	Northern Trust Corp	0000073124	353,253	1.02%	▲19,357	+5.80%	$15.93Mn
20	FIRST WILSHIRE SECURITIES MANAGEMENT INC	0000732847	268,773	0.78%	▼231,150	-46.24%	$12.12Mn

Showing 1 to 20 of 245 holders