William Blair Investment Management’s Gibraltar Industries ROCK Stock Holding History

William Blair Investment 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
2021 Q3	–	Sell	-17,830	Closed	-$1.36M	–	492
2021 Q2	$1.36M	Sell	17,830 -136,684	-88%	-$11.3M	﹤0.01%	300
2021 Q1	$14.1M	Sell	154,514 -90,312	-37%	-$8.29M	0.05%	250
2020 Q4	$17.6M	Sell	244,826 -16,606	-6%	-$1.11M	0.06%	221
2020 Q3	$17M	Buy	261,432 +21,853	+9%	+$1.29M	0.07%	203
2020 Q2	$11.5M	Buy	239,579 +79,897	+50%	+$3.55M	0.05%	232
2020 Q1	$6.85M	Buy	+159,682	New	+$7.99M	0.03%	266

Other funds holding ROCK

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

GKIM

GW&K Investment Management Boston, Massachusetts $11.3B AUM 31.98% 1-Year Est. Return

SAM

Silvercrest Asset Management New York $13.8B AUM 28.39% 1-Year Est. Return

Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return

Schroder Investment Management Group London, United Kingdom $122B AUM 29.27% 1-Year Est. Return

William Blair Investment Management's ROCK Position: Q3 2021 in Review

William Blair Investment Management sold out of Gibraltar Industries (ROCK) in Q3 2021, closing a stake of 17,830 shares — an estimated $1.36M sold.

William Blair Investment Management first reported a position in ROCK in Q1 2020 and held it in 6 quarters. The position peaked at $17.6M in Q4 2020. 194 funds tracked by Wall St. Rank hold ROCK as of Q3 2021.

William Blair Investment Management reported no remaining Gibraltar Industries position as of Q3 2021 after selling out during the quarter.
William Blair Investment Management sold 17,830 Gibraltar Industries shares in Q3 2021, an estimated $1.36M.
William Blair Investment Management first reported a position in Gibraltar Industries in Q1 2020 and held it in 6 quarters.
William Blair Investment Management's Gibraltar Industries position peaked at $17.6M in Q4 2020.
194 funds tracked by Wall St. Rank held Gibraltar Industries as of Q3 2021.

Based on William Blair Investment Management's 13F filing for Q3 2021, filed 10 Nov 2021.