Boston Partners’s Ero Copper ERO Stock Holding History

Boston Partners’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
2025 Q4	–	Sell	-82,968	Closed	-$1.68M	–	770
2025 Q3	$1.68M	Sell	82,968 -806,186	-91%	-$12.3M	﹤0.01%	582
2025 Q2	$15M	Buy	889,154 +242,594	+38%	+$3.28M	0.02%	378
2025 Q1	$7.83M	Sell	646,560 -454,705	-41%	-$6.06M	0.01%	403
2024 Q4	$14.8M	Buy	1,101,265 +441,413	+67%	+$7.48M	0.02%	358
2024 Q3	$14.7M	Buy	659,852 +130,786	+25%	+$2.67M	0.02%	359
2024 Q2	$11.3M	Sell	529,066 -197,002	-27%	-$4.13M	0.01%	388
2024 Q1	$14M	Buy	726,068 +503,972	+227%	+$8.31M	0.02%	362
2023 Q4	$3.51M	Buy	222,096 +49,042	+28%	+$689K	﹤0.01%	445
2023 Q3	$2.98M	Buy	173,054 +37,246	+27%	+$761K	﹤0.01%	454
2023 Q2	$2.75M	Buy	135,808 +36,796	+37%	+$696K	﹤0.01%	450
2023 Q1	$1.75M	Buy	+99,012	New	+$1.59M	﹤0.01%	479

Other funds holding ERO

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Fidelity International Hamilton, Bermuda $129B AUM 30.83% 1-Year Est. Return

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

GMT Capital Atlanta, Georgia $2.19B AUM 72.3% 1-Year Est. Return

Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $73.7B AUM 53.56% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

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

Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return

CAAM

Cape Ann Asset Management London, United Kingdom $440M AUM 96.23% 1-Year Est. Return

HIM

Hillsdale Investment Management Toronto, Ontario, Canada $3.68B AUM 62.12% 1-Year Est. Return

Boston Partners's ERO Position: Q4 2025 in Review

Boston Partners sold out of Ero Copper (ERO) in Q4 2025, closing a stake of 82,968 shares — an estimated $1.68M sold.

Boston Partners first reported a position in ERO in Q1 2023 and held it in 11 quarters. The position peaked at $15M in Q2 2025. 155 funds tracked by Wall St. Rank hold ERO as of Q4 2025.

Boston Partners reported no remaining Ero Copper position as of Q4 2025 after selling out during the quarter.
Boston Partners sold 82,968 Ero Copper shares in Q4 2025, an estimated $1.68M.
Boston Partners first reported a position in Ero Copper in Q1 2023 and held it in 11 quarters.
Boston Partners's Ero Copper position peaked at $15M in Q2 2025.
155 funds tracked by Wall St. Rank held Ero Copper as of Q4 2025.

Based on Boston Partners's 13F filing for Q4 2025, filed 13 Feb 2026.