Summit Global Investments’s Gibraltar Industries ROCK Stock Holding History

Summit Global Investments’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 Q2	$420K	Sell	9,308 -9,868	-51%	-$387K	0.02%	375
2026 Q1	$765K	Buy	19,176 +847	+5%	+$40.9K	0.05%	250
2025 Q4	$906K	Sell	18,329 -135	-0.7%	-$7.74K	0.05%	218
2025 Q3	$1.16M	Buy	18,464 +1,339	+8%	+$83.8K	0.07%	174
2025 Q2	$1.01M	Buy	+17,125	New	+$981K	0.06%	201
2024 Q4	–	Sell	-3,535	Closed	-$247K	–	621
2024 Q3	$247K	Hold	3,535	–	–	0.02%	460
2024 Q2	$242K	Buy	+3,535	New	+$257K	0.02%	448
2021 Q3	–	Sell	-8,400	Closed	-$641K	–	545
2021 Q2	$641K	Sell	8,400 -300	-3%	-$24.8K	0.04%	304
2021 Q1	$796K	Buy	+8,700	New	+$798K	0.05%	230

Other funds holding ROCK

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return

FCM

Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Summit Global Investments's ROCK Position: Q2 2026 in Review

Summit Global Investments reduced its Gibraltar Industries (ROCK) stake by 51% in Q2 2026, selling an estimated $387K and leaving 9,308 shares worth $420K. The position accounts for 0.02% of the portfolio, ranked #375.

Summit Global Investments first reported a position in ROCK in Q1 2021 and has held it in 9 quarters since. The position peaked at $1.16M in Q3 2025. 245 funds tracked by Wall St. Rank hold ROCK as of Q2 2026.

Summit Global Investments held 9,308 shares of Gibraltar Industries worth $420K as of Q2 2026.
Summit Global Investments sold 9,868 Gibraltar Industries shares in Q2 2026, an estimated $387K.
Gibraltar Industries made up 0.02% of Summit Global Investments's portfolio in Q2 2026, its #375 holding.
Summit Global Investments first reported a position in Gibraltar Industries in Q1 2021 and has held it in 9 quarters since.
Summit Global Investments's Gibraltar Industries position peaked at $1.16M in Q3 2025.
245 funds tracked by Wall St. Rank held Gibraltar Industries as of Q2 2026.

Based on Summit Global Investments's 13F filing for Q2 2026, filed 3 Aug 2026.