Two Sigma Securities’s Gibraltar Industries ROCK Stock Holding History

Two Sigma Securities’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	$253K	Sell	5,604 -6,152	-52%	-$241K	0.02%	1009
2026 Q1	$469K	Buy	11,756 +3,330	+40%	+$161K	0.05%	499
2025 Q4	$417K	Buy	+8,426	New	+$483K	0.06%	473
2025 Q1	–	Sell	-7,084	Closed	-$417K	–	2088
2024 Q4	$417K	Buy	7,084 +1,289	+22%	+$87.9K	0.06%	456
2024 Q3	$405K	Buy	+5,795	New	+$405K	0.01%	1486
2024 Q1	–	Sell	-3,426	Closed	-$271K	–	3542
2023 Q4	$271K	Buy	+3,426	New	+$234K	﹤0.01%	2095

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

Two Sigma Securities's ROCK Position: Q2 2026 in Review

Two Sigma Securities reduced its Gibraltar Industries (ROCK) stake by 52% in Q2 2026, selling an estimated $241K and leaving 5,604 shares worth $253K. The position accounts for 0.02% of the portfolio, ranked #1009.

Two Sigma Securities first reported a position in ROCK in Q4 2023 and has held it in 6 quarters since. The position peaked at $469K in Q1 2026. 245 funds tracked by Wall St. Rank hold ROCK as of Q2 2026.

Two Sigma Securities held 5,604 shares of Gibraltar Industries worth $253K as of Q2 2026.
Two Sigma Securities sold 6,152 Gibraltar Industries shares in Q2 2026, an estimated $241K.
Gibraltar Industries made up 0.02% of Two Sigma Securities's portfolio in Q2 2026, its #1009 holding.
Two Sigma Securities first reported a position in Gibraltar Industries in Q4 2023 and has held it in 6 quarters since.
Two Sigma Securities's Gibraltar Industries position peaked at $469K in Q1 2026.
245 funds tracked by Wall St. Rank held Gibraltar Industries as of Q2 2026.

Based on Two Sigma Securities's 13F filing for Q2 2026, filed 14 Aug 2026.