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FRONTIER CAPITAL MANAGEMENT CO LLC

Position in ERO — Ero Copper Corp.

CIK 351173 Boston, MA

Position in ERO

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$41,196,685
+$7,833,929 QoQ
Shares Held
1,540,063
+23.1% QoQ
Ownership
1.48%
of shares outstanding
% of Portfolio
0.38%
of 13F equity value
Holder Rank
#11
of 208 holders
Holding Since
Mar 2023
14 quarters on record
Voting authority Sole 35% Shared 0% None 65%

Common Shares in ERO Over Time

Shares Held

Position Value (USD)

Position in Copper

Basic Materials · as of Jun 30, 2026

FRONTIER CAPITAL MANAGEMENT CO LLC holds $41,196,685 across 1 Copper name. ERO ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ERO
Ero Copper Corp.
This page
1,540,063 $41,196,685

All Filings in ERO

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14 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $41,196,685 1,540,063
2026-03-31 $33,362,756 1,250,947
2025-12-31 $24,275,507 858,095
2025-09-30 $16,578,869 819,519
2025-06-30 $22,818,927 1,354,239
2025-03-31 $13,505,364 1,114,304
2024-12-31 $12,898,742 956,880
2024-09-30 $18,564,071 833,591
2024-06-30 $23,735,349 1,110,166
2024-03-31 $16,258,901 843,304
2023-12-31 $3,014,074 190,885
2023-09-30 $9,199,867 533,635
2023-06-30 $13,603,360 672,435
2023-03-31 $10,193,820 577,881