Boston Partners

Boston Partners’s Gibraltar Industries ROCK Stock Holding History

Boston Partners’s Portfolio ROCK Stock Details ROCK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$27.3M	Sell	686,625 -237,086	-26%	-$11.5M	0.03%	338
2025 Q4	$46M	Buy	923,711 +897,935	+3,484%	+$51.5M	0.05%	279
2025 Q3	$1.62M	Buy	+25,776	New	+$1.61M	﹤0.01%	584
2023 Q1	–	Sell	-14,515	Closed	-$666K	–	747
2022 Q4	$666K	Buy	14,515 +337	+2%	+$16.2K	﹤0.01%	560
2022 Q3	$580K	Buy	14,178 +282	+2%	+$12K	﹤0.01%	582
2022 Q2	$538K	Buy	13,896 +5,525	+66%	+$225K	﹤0.01%	597
2022 Q1	$360K	Buy	8,371 +244	+3%	+$12.9K	﹤0.01%	640
2021 Q4	$542K	Sell	8,127 -1,115	-12%	-$79.6K	﹤0.01%	604
2021 Q3	$644K	Sell	9,242 -1,332	-13%	-$95.8K	﹤0.01%	581
2021 Q2	$807K	Sell	10,574 -1,315	-11%	-$109K	﹤0.01%	573
2021 Q1	$1.09M	Sell	11,889 -4,555	-28%	-$418K	﹤0.01%	569
2020 Q4	$1.18M	Sell	16,444 -8,674	-35%	-$579K	﹤0.01%	519
2020 Q3	$1.64M	Sell	25,118 -241	-1%	-$14.2K	﹤0.01%	447
2020 Q2	$1.22M	Sell	25,359 -3,577	-12%	-$159K	﹤0.01%	496
2020 Q1	$1.24M	Buy	+28,936	New	+$1.45M	﹤0.01%	489
2014 Q1	–	Sell	-292,202	Closed	-$5.43M	–	740
2013 Q4	$5.43M	Hold	292,202	–	–	0.01%	498
2013 Q3	$4.17M	Sell	292,202 -96,115	-25%	-$1.38M	0.01%	518
2013 Q2	$5.65M	Buy	+388,317	New	+$6.56M	0.02%	432

Other funds holding ROCK

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Fidelity Investments

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

AllianceBernstein

AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

Dimensional Fund Advisors

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Barrow, Hanley, Mewhinney & Strauss

Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return

Geode Capital Management

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Mirae Asset Global ETFs Holdings

Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $73.7B AUM 53.56% 1-Year Est. Return