EGM
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Engineers Gate Manager’s Gibraltar Industries ROCK Stock Holding History

Engineers Gate Manager’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 		$661K Buy
+14,647
New +$574K 0.01% 1342
2026
Q1 		– Sell
-9,146
Closed -$452K – 2512
2025
Q4 		$452K Buy
9,146
+2,772
+43% +$159K 0.01% 1416
2025
Q3 		$400K Sell
6,374
-9,976
-61% -$624K ﹤0.01% 1621
2025
Q2 		$965K Sell
16,350
-4,419
-21% -$253K 0.01% 1132
2025
Q1 		$1.22M Buy
20,769
+1,057
+5% +$65.8K 0.02% 955
2024
Q4 		$1.16M Buy
19,712
+5,146
+35% +$351K 0.02% 910
2024
Q3 		$1.02M Buy
14,566
+7,843
+117% +$548K 0.02% 978
2024
Q2 		$461K Sell
6,723
-5,845
-47% -$425K 0.01% 1265
2024
Q1 		$1.01M Sell
12,568
-14,950
-54% -$1.19M 0.03% 816
2023
Q4 		$2.17M Buy
27,518
+16,602
+152% +$1.13M 0.06% 448
2023
Q3 		$737K Buy
10,916
+5,542
+103% +$379K 0.03% 884
2023
Q2 		$338K Buy
+5,374
New +$291K 0.01% 1256
2022
Q3 		– Sell
-6,496
Closed -$252K – 2015
2022
Q2 		$252K Sell
6,496
-69,035
-91% -$2.82M 0.01% 1520
2022
Q1 		$3.24M Buy
75,531
+49,845
+194% +$2.63M 0.13% 179
2021
Q4 		$1.71M Buy
+25,686
New +$1.83M 0.08% 338
2020
Q4 		– Sell
-3,770
Closed -$246K – 1937
2020
Q3 		$246K Buy
+3,770
New +$222K 0.01% 1344
2020
Q1 		– Sell
-38,575
Closed -$1.95M – 1879
2019
Q4 		$1.95M Buy
+38,575
New +$1.94M 0.09% 364
2019
Q3 		– Sell
-11,036
Closed -$445K – 1574
2019
Q2 		$445K Buy
+11,036
New +$429K 0.02% 758

Other funds holding ROCK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
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
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Engineers Gate Manager's ROCK Position: Q2 2026 in Review

Engineers Gate Manager opened a new position in Gibraltar Industries (ROCK) in Q2 2026: 14,647 shares worth $661K. The stake represents 0.01% of the portfolio and ranks #1342 among its holdings. This is a return to the name: Engineers Gate Manager previously reported a position in ROCK as recently as Q4 2025.

Engineers Gate Manager first reported a position in ROCK in Q2 2019 and has held it in 18 quarters since. The position peaked at $3.24M in Q1 2022. 246 funds tracked by Wall St. Rank hold ROCK as of Q2 2026.

  • Engineers Gate Manager held 14,647 shares of Gibraltar Industries worth $661K as of Q2 2026.
  • Gibraltar Industries was a new Engineers Gate Manager position in Q2 2026.
  • Gibraltar Industries made up 0.01% of Engineers Gate Manager's portfolio in Q2 2026, its #1342 holding.
  • Engineers Gate Manager first reported a position in Gibraltar Industries in Q2 2019 and has held it in 18 quarters since.
  • Engineers Gate Manager's Gibraltar Industries position peaked at $3.24M in Q1 2022.
  • 246 funds tracked by Wall St. Rank held Gibraltar Industries as of Q2 2026.

Based on Engineers Gate Manager's 13F filing for Q2 2026, filed 14 Aug 2026.