William Blair Investment Management’s Ero Copper ERO Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$11.8M	Buy	+439,640	New	+$12.5M	0.04%	298

Other funds holding ERO

Fidelity International Hamilton, Bermuda $139B AUM 29.06% 1-Year Est. Return

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

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

GMT Capital Atlanta, Georgia $1.92B AUM 70.51% 1-Year Est. Return

CAAM

Cape Ann Asset Management London, United Kingdom $434M AUM 68.57% 1-Year Est. Return

Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

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

William Blair Investment Management opened a new position in Ero Copper (ERO) in Q2 2026: 439,640 shares worth $11.8M. The stake represents 0.04% of the portfolio and ranks #298 among its holdings.

209 funds tracked by Wall St. Rank hold ERO as of Q2 2026.

William Blair Investment Management held 439,640 shares of Ero Copper worth $11.8M as of Q2 2026.
Ero Copper was a new William Blair Investment Management position in Q2 2026.
Ero Copper made up 0.04% of William Blair Investment Management's portfolio in Q2 2026, its #298 holding.
209 funds tracked by Wall St. Rank held Ero Copper as of Q2 2026.

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