Harbor Capital Advisors’s Gibraltar Industries ROCK Stock Holding History

Harbor Capital Advisors’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	$11K	Buy	278 +156	+128%	+$7.54K	﹤0.01%	961
2025 Q4	$6K	Sell	122 -2	-2%	-$115	﹤0.01%	1106
2025 Q3	$8K	Sell	124 -4	-3%	-$250	﹤0.01%	1024
2025 Q2	$8K	Sell	128 -26	-17%	-$1.49K	﹤0.01%	1038
2025 Q1	$9K	Buy	154 +63	+69%	+$3.92K	﹤0.01%	1003
2024 Q4	$5K	Sell	91 -2	-2%	-$136	﹤0.01%	1140
2024 Q3	$7K	Buy	+93	New	+$6.49K	﹤0.01%	1073

Other funds holding ROCK

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

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

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

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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

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

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

Harbor Capital Advisors's ROCK Position: Q1 2026 in Review

Harbor Capital Advisors increased its Gibraltar Industries (ROCK) stake by 128% in Q1 2026, buying an estimated $7.54K and bringing the position to 278 shares worth $11K. The position accounts for ﹤0.01% of the portfolio, ranked #961.

Harbor Capital Advisors first reported a position in ROCK in Q3 2024 and has held it in 7 quarters since. 228 funds tracked by Wall St. Rank hold ROCK as of Q1 2026.

Harbor Capital Advisors held 278 shares of Gibraltar Industries worth $11K as of Q1 2026.
Harbor Capital Advisors bought 156 Gibraltar Industries shares in Q1 2026, an estimated $7.54K.
Gibraltar Industries made up ﹤0.01% of Harbor Capital Advisors's portfolio in Q1 2026, its #961 holding.
Harbor Capital Advisors first reported a position in Gibraltar Industries in Q3 2024 and has held it in 7 quarters since.
228 funds tracked by Wall St. Rank held Gibraltar Industries as of Q1 2026.

Based on Harbor Capital Advisors's 13F filing for Q1 2026, filed 28 Apr 2026.