ROCK · Gibraltar Industries, Inc. · Holdings

$40.80 +0.48 (+1.19%) At close · Oct 6

S&P 600 member Russell 2000 member Rebalance outlook locked

Market Cap

$1.20B

29.68M

Volume · Oct 6 217.31K Avg daily vol (3M) 319.19K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 245

Total Value: $1,407,146,071

Total Shares: 31,204,546

Showing 1–100 of 250 holdings by value · page 1 of 3

Institutional Ownership Trend

27 quarters

Superinvestors Holding ROCK

All superinvestors →

Mario Gabelli $4,357,787

Holder Concentration

Across 245 13F filers

Top Holder

15.8%

of institutional value

Top 5

46.3%

of institutional value

Top 10

62.8%

of institutional value

HHI

633

Broadly held

Showing 100 of 250

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$221,886,446

15.77%

4,919,877

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	24,861	$1,121,231	0.5%	Sole
BlackRock Investment Management (Australia) Ltd	1,208	$54,480	0.0%	Sole
BlackRock Asset Management Canada Ltd	12,890	$581,339	0.3%	Sole
BlackRock Investment Management, LLC	105,970	$4,779,247	2.2%	Sole
BLACKROCK ADVISORS LLC	193,967	$8,747,911	3.9%	Sole
BlackRock Fund Advisors	3,452,184	$155,693,498	70.2%	Sole
BlackRock Institutional Trust Company, N.A.	898,290	$40,512,879	18.3%	Sole
BlackRock Fund Managers Ltd.	25,719	$1,159,926	0.5%	Sole
BlackRock Investment Management (UK) Ltd.	11,372	$512,877	0.2%	Sole
BlackRock (Netherlands) B.V.	12,579	$567,312	0.3%	Sole
BlackRock Asset Management Ireland Ltd	81,577	$3,679,122	1.7%	Sole
BlackRock (Luxembourg) S.A.	42,265	$1,906,151	0.9%	Sole
BlackRock Asset Management Schweiz AG	5,524	$249,132	0.1%	Sole
Aperio Group, LLC	51,452	$2,320,485	1.0%	Sole
SpiderRock Advisors, LLC	19	$856	0.0%	Sole

FMR LLC

$200,662,842

14.26%

4,449,287

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	2,897,764	$130,689,156	65.1%	Defined
FIDELITY MANAGEMENT TRUST CO	237,828	$10,726,042	5.3%	Defined
STRATEGIC ADVISERS LLC	51	$2,300	0.0%	Defined
Fidelity Institutional Asset Management Trust Co	147,574	$6,655,587	3.3%	Defined
FIAM LLC	1,166,070	$52,589,757	26.2%	Defined

ALLIANCEBERNSTEIN L.P.

$100,700,723

7.16%

2,232,832

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	2,232,832	$100,700,723	100.0%	Defined

DIMENSIONAL FUND ADVISORS LP

$67,606,026

4.80%

1,499,025

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	3,991	$179,994	0.3%	Defined
DFA Australia Ltd.	10,399	$468,994	0.7%	Defined
Dimensional Fund Advisors Pte. Ltd.	262	$11,816	0.0%	Defined
Dimensional Ireland Ltd	53,072	$2,393,547	3.5%	Defined
Held directly	1,431,301	$64,551,675	95.5%	Sole

VANGUARD CAPITAL MANAGEMENT LLC

$60,103,822

4.27%

1,332,679

VANGUARD PORTFOLIO MANAGEMENT LLC

$58,207,683

4.14%

1,290,636

STATE STREET CORP

$55,427,178

3.94%

1,228,984

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	1,228,984	$55,427,178	100.0%	Defined

BARROW HANLEY MEWHINNEY & STRAUSS LLC

$44,419,711

3.16%

984,916

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Perpetual Ltd joint	984,916	$44,419,711	100.0%	Defined

FRONTIER CAPITAL MANAGEMENT CO LLC

$37,445,267

2.66%

830,272

GEODE CAPITAL MANAGEMENT, LLC

$37,111,391

2.64%

822,869

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	112,018	$5,052,011	13.6%	Defined
Held directly	710,851	$32,059,380	86.4%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$36,333,461

2.58%

805,620

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	804,491	$36,282,544	99.9%	Defined
Global X Management (AUS) Ltd joint	1,129	$50,917	0.1%	Defined

SEGALL BRYANT & HAMILL, LLC

$26,498,279

1.88%

587,545

Simcoe Capital Management, LLC

$22,295,861

1.58%

494,365

Boston Partners

$20,954,722

1.49%

464,628

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Boston Partners Trust Co	58,461	$2,636,591	12.6%	Defined
Held directly	406,167	$18,318,131	87.4%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$20,084,202

1.43%

445,326

ROYCE & ASSOCIATES LP

$18,146,661

1.29%

402,365

SG Capital Management LLC

$17,562,391

1.25%

389,410

MORGAN STANLEY

$16,110,169

1.14%

357,210

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	21	$947	0.0%	Defined
MORGAN STANLEY & CO. LLC	16,558	$746,765	4.6%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	106,446	$4,800,714	29.8%	Defined
MORGAN STANLEY SMITH BARNEY LLC	15,541	$700,899	4.4%	Defined
Morgan Stanley Bank, N.A.	1,492	$67,289	0.4%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	217,152	$9,793,555	60.8%	Defined

NORTHERN TRUST CORP

$15,931,707

1.13%

353,253

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	315,261	$14,218,270	89.2%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	23,387	$1,054,753	6.6%	Defined
MASON STREET ADVISORS, LLC joint	9,967	$449,511	2.8%	Other
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	4,638	$209,173	1.3%	Other

FIRST WILSHIRE SECURITIES MANAGEMENT INC

$12,121,662

0.86%

268,773

UBS Group AG

$11,484,758

0.82%

254,651

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	3,378	$152,347	1.3%	Defined
UBS AG	247,258	$11,151,335	97.1%	Defined
UBS Switzerland AG	4,015	$181,076	1.6%	Defined

Balyasny Asset Management L.P.

$10,977,475

0.78%

243,403

KENNEDY CAPITAL MANAGEMENT LLC

$10,826,886

0.77%

240,064

D. E. Shaw & Co., Inc.

$10,136,089

0.72%

224,747

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	219,025	$9,878,027	97.5%	Defined
D. E. Shaw Investment Management, L.L.C. joint	5,722	$258,062	2.5%	Defined

Invenomic Capital Management LP

$9,172,573

0.65%

203,383

VANGUARD FIDUCIARY TRUST CO

$8,840,231

0.63%

196,014

CITADEL ADVISORS LLC

$8,618,924

0.61%

191,107

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	58,338	$2,631,043	30.5%	Defined
Held directly	132,769	$5,987,881	69.5%	Defined

PRINCIPAL FINANCIAL GROUP INC

$8,542,661

0.61%

189,416

Bank of New York Mellon Corp

$7,650,130

0.54%

169,626

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	88,338	$3,984,043	52.1%	Defined
BNY Mellon Investment Adviser, Inc.	24,154	$1,089,345	14.2%	Defined
The Bank of New York Mellon	56,678	$2,556,177	33.4%	Defined
BNY Mellon, NA joint	455	$20,520	0.3%	Defined
Held directly	1	$45	0.0%	Defined

PALISADE CAPITAL MANAGEMENT, LP

$7,596,238

0.54%

168,431

AQR CAPITAL MANAGEMENT LLC

$7,197,327

0.51%

159,586

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Prism Planning Partners LLC	106	$4,780	0.1%	Other
Arax Advisory Partners	2,673	$120,552	1.7%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	840	$37,884	0.5%	Other
Stokes Family Office, LLC	323	$14,567	0.2%	Other
Held directly	155,644	$7,019,544	97.5%	Defined

NEW YORK STATE COMMON RETIREMENT FUND

$6,608,277

0.47%

146,525

Invesco Ltd.

$6,512,889

0.46%

144,410

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	11,174	$503,947	7.7%	Defined
Invesco Trust Co joint	12,067	$544,221	8.4%	Defined
Invesco Investment Advisers LLC	18,713	$843,956	13.0%	Defined
Invesco Capital Management LLC	102,456	$4,620,765	70.9%	Defined

BANK OF AMERICA CORP /DE/

$6,036,950

0.43%

133,857

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	50,636	$2,283,683	37.8%	Defined
MANAGED ACCOUNT ADVISORS LLC joint	83,221	$3,753,267	62.2%	Defined

Edgestream Partners, L.P.

$5,665,958

0.40%

125,631

GOLDMAN SACHS GROUP INC

$5,642,730

0.40%

125,116

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	73,179	$3,300,372	58.5%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	51,937	$2,342,358	41.5%	Defined

RBF Capital, LLC

$5,551,764

0.39%

123,099

CastleKnight Management LP

$5,524,750

0.39%

122,500

Nuveen, LLC

$4,972,092

0.35%

110,246

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	36,817	$1,660,445	33.4%	Defined
TEACHERS ADVISORS, LLC joint	73,429	$3,311,647	66.6%	Defined

SYSTEMATIC FINANCIAL MANAGEMENT LP

$4,725,081

0.34%

104,769

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AFFILIATED MANAGERS GROUP, INC.	96,355	$4,345,610	92.0%	Defined
MORGAN STANLEY	8,414	$379,471	8.0%	Other

Public Sector Pension Investment Board

$4,596,186

0.33%

101,911

GAMCO INVESTORS, INC. ET AL

$4,357,787

0.31%

96,625

PRIMECAP MANAGEMENT CO/CA/

$4,311,560

0.31%

95,600

MONIMUS CAPITAL MANAGEMENT, LP

$4,146,448

0.29%

91,939

AMERIPRISE FINANCIAL INC

$3,948,324

0.28%

87,546

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	86,925	$3,920,317	99.3%	Defined
Ameriprise Financial Services, LLC	621	$28,007	0.7%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$3,874,676

0.28%

85,913

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	85,913	$3,874,676	100.0%	Other

Man Group plc

$3,756,018

0.27%

83,282

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AHL Partners LLP	1,072	$48,347	1.3%	Defined
Numeric Investors LLC	82,210	$3,707,671	98.7%	Defined

Squarepoint Ops LLC

$3,749,974

0.27%

83,148

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	83,148	$3,749,974	100.0%	Defined

RHUMBLINE ADVISERS

$3,604,346

0.26%

79,919

PRUDENTIAL FINANCIAL INC

$3,400,314

0.24%

75,395

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PGIM Quantitative Solutions LLC	61,995	$2,795,974	82.2%	Defined
Prudential Trust Co	13,400	$604,340	17.8%	Defined

Expect Equity LLC

$3,078,841

0.22%

68,267

RENAISSANCE TECHNOLOGIES LLC

$3,006,726

0.21%

66,668

Legal & General Group Plc

$2,920,449

0.21%

64,755

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	45,340	$2,044,834	70.0%	Defined
Legal & General Investment Management Ltd joint	19,415	$875,615	30.0%	Defined

VICTORY CAPITAL MANAGEMENT INC

$2,901,553

0.21%

64,336

BESSEMER GROUP INC

$2,874,538

0.20%

63,737

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BESSEMER TRUST Co NATIONAL ASSOCIATION	63,737	$2,874,538	100.0%	Defined

PICTON MAHONEY ASSET MANAGEMENT

$2,818,163

0.20%

62,487

Swiss National Bank

$2,687,960

0.19%

59,600

LAZARD ASSET MANAGEMENT LLC

$2,685,705

0.19%

59,550

AMERICAN CENTURY COMPANIES INC

$2,581,659

0.18%

57,243

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	57,243	$2,581,659	100.0%	Defined

MILLENNIUM MANAGEMENT LLC

$2,551,442

0.18%

56,573

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$2,529,340

0.18%

56,083

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	693	$31,254	1.2%	Defined
UBS Asset Management Switzerland AG	36,196	$1,632,439	64.5%	Sole
UBS Asset Management (UK) Ltd.	12,028	$542,462	21.4%	Defined
Held directly	7,166	$323,185	12.8%	Defined

WESBANCO BANK INC

$2,495,292

0.18%

55,328

Teton Advisors, LLC

$2,345,200

0.17%

52,000

South Dakota Investment Council

$2,304,159

0.16%

51,090

PRICE T ROWE ASSOCIATES INC /MD/

$2,277,730

0.16%

50,504

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	50,504	$2,277,730	100.0%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$2,245,754

0.16%

49,795

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	49,795	$2,245,754	100.0%	Sole

SG Americas Securities, LLC

$2,090,159

0.15%

46,345

MARSHALL WACE, LLP

$1,954,859

0.14%

43,345

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	43,345	$1,954,859	100.0%	Other

CITIGROUP INC

$1,829,751

0.13%

40,571

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citibank, N.A. joint	2,280	$102,828	5.6%	Defined
Citigroup Financial Products Inc. joint	38,291	$1,726,923	94.4%	Defined

WEDGE CAPITAL MANAGEMENT L L P/NC

$1,764,537

0.13%

39,125

Atom Investors LP

$1,688,273

0.12%

37,434

CAPITAL FUND MANAGEMENT S.A.

$1,659,409

0.12%

36,794

BFSG, LLC

$1,635,596

0.12%

36,266

Creative Planning

$1,627,883

0.12%

36,095

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CREATIVE PLANNING TRUST Co LLC	369	$16,641	1.0%	Defined
Held directly	35,726	$1,611,242	99.0%	Sole

FIFTH THIRD BANCORP

$1,559,467

0.11%

34,578

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fifth Third Bank, National Association	34,578	$1,559,467	100.0%	Defined

GABELLI FUNDS LLC

$1,538,135

0.11%

34,105

SEI INVESTMENTS CO

$1,535,970

0.11%

34,057

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	421	$18,987	1.2%	Sole
SEI TRUST CO	33,636	$1,516,983	98.8%	Sole

DEUTSCHE BANK AG\

$1,518,922

0.11%

33,679

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	32,089	$1,447,213	95.3%	Defined
DWS International GmbH	1,590	$71,709	4.7%	Defined

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

$1,506,520

0.11%

33,404

Skylands Capital, LLC

$1,504,085

0.11%

33,350

NEW YORK STATE TEACHERS RETIREMENT SYSTEM

$1,471,387

0.10%

32,625

HUDSON EDGE INVESTMENT PARTNERS INC.

$1,449,559

0.10%

32,141

VANGUARD ASSET MANAGEMENT, Ltd

$1,448,206

0.10%

32,111

CAXTON ASSOCIATES LLP

$1,442,252

0.10%

31,979

BARCLAYS PLC

$1,431,067

0.10%

31,731

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	30,764	$1,387,456	97.0%	Defined
BARCLAYS CAPITAL INC.	967	$43,611	3.0%	Defined

Federation des caisses Desjardins du Quebec

$1,343,483

0.10%

29,789

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Regime de rentes du Mouvement Desjardins	29,789	$1,343,483	100.0%	Defined

CANADA LIFE ASSURANCE Co

$1,305,284

0.09%

28,942

Rafferty Asset Management, LLC

$1,265,821

0.09%

28,067

WELLS FARGO & COMPANY/MN

$1,180,807

0.08%

26,182

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	25,928	$1,169,352	99.0%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	50	$2,255	0.2%	Defined
WELLS FARGO CLEARING SERVICES, LLC	204	$9,200	0.8%	Defined

FRANKLIN RESOURCES INC

$1,081,271

0.08%

23,975

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FIDUCIARY TRUST CO INTERNATIONAL	7	$315	0.0%	Defined
FIDUCIARY TRUST INTERNATIONAL LLC	78	$3,517	0.3%	Defined
FRANKLIN ADVISERS INC	23,890	$1,077,439	99.6%	Defined

Kennondale Capital Management LLC

$1,061,834

0.08%

23,544

FIRST TRUST ADVISORS LP

$1,055,204

0.07%

23,397

Corient Private Wealth LLC

$1,048,214

0.07%

23,242

Quantbot Technologies LP

$1,039,600

0.07%

23,051

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	23,051	$1,039,600	100.0%	Sole

Quantinno Capital Management LP

$996,259

0.07%

22,090

SHELTON CAPITAL MANAGEMENT

$967,620

0.07%

21,455

JPMORGAN CHASE & CO

$948,857

0.07%

21,039

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	12,529	$565,057	59.6%	Defined
J.P. Morgan Investment Management Inc.	8,316	$375,051	39.5%	Defined
J.P. Morgan Securities LLC	194	$8,749	0.9%	Defined

ExodusPoint Capital Management, LP

$924,099

0.07%

20,490

Van Hulzen Asset Management, LLC

$898,301

0.06%

19,918

MOODY NATIONAL BANK TRUST DIVISION

$879,318

0.06%

22,205

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MOODY BANCSHARES INC joint	22,205	$879,318	100.0%	Defined

Key facts CIK 912562 CUSIP 374689107 13F (30d) 11 filings 8 filers Visit website Investor relations