XT
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XTX Topco’s Gibraltar Industries ROCK Stock Holding History

XTX Topco’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 		$793K Buy
17,587
+2,636
+18% +$103K 0.01% 2012
2026
Q1 		$596K Buy
14,951
+8,920
+148% +$431K 0.01% 1866
2025
Q4 		$298K Buy
+6,031
New +$346K 0.01% 2074
2024
Q4 		– Sell
-7,636
Closed -$534K – 2836
2024
Q3 		$534K Buy
+7,636
New +$533K 0.04% 766
2023
Q2 		– Sell
-5,959
Closed -$289K – 1772
2023
Q1 		$289K Buy
+5,959
New +$305K 0.06% 681
2021
Q2 		– Sell
-4,112
Closed -$376K – 1045
2021
Q1 		$376K Buy
+4,112
New +$377K 0.18% 189

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

XTX Topco's ROCK Position: Q2 2026 in Review

XTX Topco increased its Gibraltar Industries (ROCK) stake by 18% in Q2 2026, buying an estimated $103K and bringing the position to 17,587 shares worth $793K. The position accounts for 0.01% of the portfolio, ranked #2012.

XTX Topco first reported a position in ROCK in Q1 2021 and has held it in 6 quarters since. 245 funds tracked by Wall St. Rank hold ROCK as of Q2 2026.

  • XTX Topco held 17,587 shares of Gibraltar Industries worth $793K as of Q2 2026.
  • XTX Topco bought 2,636 Gibraltar Industries shares in Q2 2026, an estimated $103K.
  • Gibraltar Industries made up 0.01% of XTX Topco's portfolio in Q2 2026, its #2012 holding.
  • XTX Topco first reported a position in Gibraltar Industries in Q1 2021 and has held it in 6 quarters since.
  • 245 funds tracked by Wall St. Rank held Gibraltar Industries as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.