Marshall Wace
ROCK icon

Marshall Wace’s Gibraltar Industries ROCK Stock Holding History

Marshall Wace’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 		$1.95M Buy
43,345
+32,854
+313% +$1.29M ﹤0.01% 1870
2026
Q1 		$418K Buy
+10,491
New +$507K ﹤0.01% 2523
2025
Q3 		– Sell
-4,455
Closed -$263K – 3334
2025
Q2 		$263K Sell
4,455
-16,299
-79% -$933K ﹤0.01% 2364
2025
Q1 		$1.22M Sell
20,754
-5,587
-21% -$348K ﹤0.01% 1697
2024
Q4 		$1.55M Buy
+26,341
New +$1.8M ﹤0.01% 1549
2024
Q3 		– Sell
-18,223
Closed -$1.25M – 2894
2024
Q2 		$1.25M Buy
18,223
+12,224
+204% +$890K ﹤0.01% 1587
2024
Q1 		$483K Buy
+5,999
New +$478K ﹤0.01% 1937
2023
Q1 		– Sell
-15,280
Closed -$701K – 3048
2022
Q4 		$701K Buy
+15,280
New +$733K ﹤0.01% 2232
2022
Q3 		– Sell
-129,230
Closed -$5.01M – 3727
2022
Q2 		$5.01M Buy
+129,230
New +$5.27M 0.01% 1333
2020
Q4 		– Sell
-26,810
Closed -$1.75M – 2129
2020
Q3 		$1.75M Sell
26,810
-56,283
-68% -$3.32M 0.01% 845
2020
Q2 		$3.99M Sell
83,093
-59,270
-42% -$2.64M 0.03% 551
2020
Q1 		$6.11M Sell
142,363
-20,064
-12% -$1M 0.06% 324
2019
Q4 		$8.19M Sell
162,427
-48,124
-23% -$2.42M 0.06% 358
2019
Q3 		$9.67M Buy
+210,551
New +$8.81M 0.08% 306

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 $3.38T AUM 44.17% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
Frontier Capital Management
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

Marshall Wace's ROCK Position: Q2 2026 in Review

Marshall Wace increased its Gibraltar Industries (ROCK) stake by 313% in Q2 2026, buying an estimated $1.29M and bringing the position to 43,345 shares worth $1.95M. The position accounts for ﹤0.01% of the portfolio, ranked #1870.

Marshall Wace first reported a position in ROCK in Q3 2019 and has held it in 14 quarters since. The position peaked at $9.67M in Q3 2019. 245 funds tracked by Wall St. Rank hold ROCK as of Q2 2026.

  • Marshall Wace held 43,345 shares of Gibraltar Industries worth $1.95M as of Q2 2026.
  • Marshall Wace bought 32,854 Gibraltar Industries shares in Q2 2026, an estimated $1.29M.
  • Gibraltar Industries made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1870 holding.
  • Marshall Wace first reported a position in Gibraltar Industries in Q3 2019 and has held it in 14 quarters since.
  • Marshall Wace's Gibraltar Industries position peaked at $9.67M in Q3 2019.
  • 245 funds tracked by Wall St. Rank held Gibraltar Industries as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.