William Blair Investment Management’s Reliance Steel & Aluminium RS Stock Holding History

William Blair Investment Management’s Portfolio RS Stock Details RS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$143M	Sell	382,494 -20,993	-5%	-$7.68M	0.43%	70
2026 Q1	$123M	Buy	403,487 +123,152	+44%	+$39.1M	0.41%	67
2025 Q4	$81M	Buy	280,335 +55,532	+25%	+$15.6M	0.23%	114
2025 Q3	$63.1M	Sell	224,803 -5,759	-2%	-$1.73M	0.16%	130
2025 Q2	$72.4M	Buy	+230,562	New	+$68.1M	0.19%	121
2019 Q1	–	Sell	-29,960	Closed	-$2.13M	–	421
2018 Q4	$2.13M	Sell	29,960 -2,962	-9%	-$234K	0.01%	366
2018 Q3	$2.81M	Buy	32,922 +575	+2%	+$50.9K	0.01%	374
2018 Q2	$2.83M	Sell	32,347 -198	-0.6%	-$18K	0.01%	383
2018 Q1	$2.79M	Buy	+32,545	New	+$2.91M	0.01%	377

Other funds holding RS

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return

YAM

Yacktman Asset Management Austin, Texas $8.09B AUM 19.03% 1-Year Est. Return

William Blair Investment Management's RS Position: Q2 2026 in Review

William Blair Investment Management reduced its Reliance Steel & Aluminium (RS) stake by 5.2% in Q2 2026, selling an estimated $7.68M and leaving 382,494 shares worth $143M. The position accounts for 0.43% of the portfolio, ranked #70.

William Blair Investment Management first reported a position in RS in Q1 2018 and has held it in 9 quarters since. 680 funds tracked by Wall St. Rank hold RS as of Q2 2026.

William Blair Investment Management held 382,494 shares of Reliance Steel & Aluminium worth $143M as of Q2 2026.
William Blair Investment Management sold 20,993 Reliance Steel & Aluminium shares in Q2 2026, an estimated $7.68M.
Reliance Steel & Aluminium made up 0.43% of William Blair Investment Management's portfolio in Q2 2026, its #70 holding.
William Blair Investment Management first reported a position in Reliance Steel & Aluminium in Q1 2018 and has held it in 9 quarters since.
680 funds tracked by Wall St. Rank held Reliance Steel & Aluminium as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.