Vanguard Portfolio Management
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Vanguard Portfolio Management’s Gibraltar Industries ROCK Stock Holding History

Vanguard Portfolio 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
2026
Q2 		$58.2M Sell
1,290,636
-33,095
-3% -$1.3M ﹤0.01% 1675
2026
Q1 		$52.8M Buy
+1,323,731
New +$64M ﹤0.01% 1654

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
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
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $83.9B AUM 60.43% 1-Year Est. Return

Vanguard Portfolio Management's ROCK Position: Q2 2026 in Review

Vanguard Portfolio Management reduced its Gibraltar Industries (ROCK) stake by 2.5% in Q2 2026, selling an estimated $1.3M and leaving 1,290,636 shares worth $58.2M. The position accounts for ﹤0.01% of the portfolio, ranked #1675.

Vanguard Portfolio Management first reported a position in ROCK in Q1 2026 and has held it in 2 quarters since. 243 funds tracked by Wall St. Rank hold ROCK as of Q2 2026.

  • Vanguard Portfolio Management held 1,290,636 shares of Gibraltar Industries worth $58.2M as of Q2 2026.
  • Vanguard Portfolio Management sold 33,095 Gibraltar Industries shares in Q2 2026, an estimated $1.3M.
  • Gibraltar Industries made up ﹤0.01% of Vanguard Portfolio Management's portfolio in Q2 2026, its #1675 holding.
  • Vanguard Portfolio Management first reported a position in Gibraltar Industries in Q1 2026 and has held it in 2 quarters since.
  • 243 funds tracked by Wall St. Rank held Gibraltar Industries as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.