Martingale Asset Management’s Gibraltar Industries ROCK Stock Holding History

Martingale Asset Management’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
2025 Q4	–	Sell	-21,238	Closed	-$1.33M	–	839
2025 Q3	$1.33M	Sell	21,238 -17,738	-46%	-$1.11M	0.03%	414
2025 Q2	$2.3M	Sell	38,976 -4,087	-9%	-$234K	0.06%	276
2025 Q1	$2.53M	Buy	43,063 +8,551	+25%	+$532K	0.06%	243
2024 Q4	$2.03M	Sell	34,512 -10,738	-24%	-$732K	0.05%	310
2024 Q3	$3.16M	Buy	45,250 +400	+0.9%	+$27.9K	0.07%	211
2024 Q2	$3.07M	Buy	44,850 +1,683	+4%	+$123K	0.07%	205
2024 Q1	$3.48M	Buy	43,167 +1,350	+3%	+$108K	0.07%	196
2023 Q4	$3.3M	Buy	41,817 +12,980	+45%	+$887K	0.07%	193
2023 Q3	$1.95M	Buy	+28,837	New	+$1.97M	0.04%	269

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 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

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

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

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

Victory Capital Management San Antonio, Texas $178B AUM 37.23% 1-Year Est. Return

Martingale Asset Management's ROCK Position: Q4 2025 in Review

Martingale Asset Management sold out of Gibraltar Industries (ROCK) in Q4 2025, closing a stake of 21,238 shares — an estimated $1.33M sold.

Martingale Asset Management first reported a position in ROCK in Q3 2023 and held it in 9 quarters. The position peaked at $3.48M in Q1 2024. 254 funds tracked by Wall St. Rank hold ROCK as of Q4 2025.

Martingale Asset Management reported no remaining Gibraltar Industries position as of Q4 2025 after selling out during the quarter.
Martingale Asset Management sold 21,238 Gibraltar Industries shares in Q4 2025, an estimated $1.33M.
Martingale Asset Management first reported a position in Gibraltar Industries in Q3 2023 and held it in 9 quarters.
Martingale Asset Management's Gibraltar Industries position peaked at $3.48M in Q1 2024.
254 funds tracked by Wall St. Rank held Gibraltar Industries as of Q4 2025.

Based on Martingale Asset Management's 13F filing for Q4 2025, filed 13 Feb 2026.