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ANALYST NOTE: ERO (Ero Copper Corp.) Date: 2026-06-20 Analyst: StoryStocks-Native Equity Research

1. Structural Readiness

As of June 20, 2026, Ero Copper Corp. presents a confirmed coil setup. The structure has fired, indicating a breakout event has occurred. The conservative entry level for this confirmed setup is $40.40. The current price is $39.82, representing an extension of -1.4% relative to the conservative entry.

While the price is currently trading slightly below the conservative entry threshold, the setup is classified as "confirmed" rather than "forming," meaning the structural breakout signal was previously triggered. The volatility profile remains robust, with the ATR at the time of the breakout recorded at 4.6% (High bucket) and the current ATR at 4.5% (High bucket). This places the stock within the historical "sweet spot" for structural quality, suggesting sufficient volatility to support a move without the elevated risk associated with extreme volatility buckets. The setup is active and constructive, serving as a partial positive readiness signal.

2. The Thesis Layer

The primary secular thesis driving this case is Critical Minerals & Materials, specifically within the Copper sector. Ero Copper is a tier direct beneficiary of this theme, with high confidence in its exposure.

The company's role is defined by its position as a mid-tier producer with significant growth options in Brazil. The thesis is reinforced by the company's strategic alignment with the global demand for copper, which is increasingly viewed as a critical input for energy transition infrastructure. The evidence base indicates that Ero is not merely a passive holder of assets but an active operator advancing high-grade projects (Furnas) that are expected to deliver first-quartile cash costs. The "Critical Minerals" theme provides a structural tailwind that aligns with the company's specific asset mix of copper, gold, and silver, offering a diversified exposure within the broader base metal complex.

3. The Business

Ero Copper Corp. operates as a diversified copper producer with a focus on high-grade assets in Brazil. The business model relies on the extraction and sale of copper, gold, and silver, with a strategic emphasis on cost efficiency and debt reduction.

Operational Highlights (as of Q1 2026 Earnings, March 6, 2026):

• Furnas Project: Management expects Furnas to produce approximately 70,000 tonnes of copper, 111,000 ounces of gold, and 500,000 ounces of silver annually over its first 15 years. The project is targeted at first-quartile C1 cash costs of approximately $0.24 per pound of copper.
• 2026 Production Guidance: For the current year, the company is guiding consolidated copper production between 67,500 to 77,500 tonnes.
• Xavantina Operations: The company is guiding mine production of 40,000 to 50,000 ounces of gold at Xavantina for 2026.
• Exploration: Management plans to complete an additional 50,000 meters of exploration drilling in 2026, targeting extensions of high-grade mineralization around planned underground infrastructure.

Financial & Strategic Position:

• Capital Allocation: Management has stated an intention for "debt reduction and return to shareholders to be key elements of our midterm capital allocation strategy."
• Project Economics: The Furnas PEA (Pre-Feasibility Study) delivers an after-tax NPV of approximately $2 billion and an IRR of more than 27% on $1.3 billion of initial capital at long-term consensus metal prices.
• Strategic Context: Management describes the company as "exiting a major investment cycle with an exceptional long-term growth asset," citing increasing cash generation capacity and declining consolidated capital requirements.

4. The Archetype and Conviction

Ero Copper fits the Quality Compounder archetype. This classification is supported by the company's ability to generate strong cash flows while simultaneously advancing high-return growth projects (Furnas) and reducing leverage.

• Margin Inflector: The transition from a major investment cycle to a cash-generation phase, combined with the low-cost profile of Furnas ($0.24/lb), suggests a structural improvement in margins.
• Valuation & Quality: The stock is highlighted in industry outlooks for its attractive EV-to-EBITDA ratios relative to peers. The combination of a strong balance sheet (debt reduction focus) and high-IRR growth projects ($27% IRR) supports the "Quality Compounder" label.
• Conviction Drivers:
• Thesis Strength: High confidence in the Copper/Critical Minerals secular trend.
• Evidence Quality: Strong primary evidence from earnings transcripts detailing specific production targets, cost metrics, and capital allocation strategies.
• Structural Quality: The ATR metrics (4.5%–4.6%) indicate a healthy volatility environment conducive to trend continuation without excessive noise.

5. Invalidations, Strengtheners, and Gaps

What Would Strengthen the Case:

• Continued execution on the 50,000 meters of exploration drilling, confirming extensions of high-grade mineralization.
• Successful advancement of the Furnas project toward a construction decision, as management has outlined.
• Further debt reduction and the initiation of shareholder returns (dividends/buybacks) as per the stated capital allocation strategy.
• Sustained copper prices that support the $0.24/lb cost advantage.

What Would Invalidate the Case:

• Significant delays or cost overruns in the Furnas project that erode the projected $2 billion NPV or 27% IRR.
• A failure to meet the 2026 production guidance of 67,500–77,500 tonnes of copper.
• A deterioration in the global copper price cycle that compresses margins below the $0.24/lb target.
• A shift in capital allocation strategy away from debt reduction and shareholder returns.

Gaps in the Evidence Base:

• Institutional Flow Nuance: While E9 notes a 4.8% position decrease by Bank of America in the "undefined quarter" (likely Q2 2026), the specific timing and rationale for this reduction are not detailed in the provided evidence. This requires monitoring to ensure it is not indicative of a broader institutional shift.
• Short-Term Price Action: The current price ($39.82) is below the conservative entry ($40.40). While the setup is "confirmed," the immediate price action suggests a consolidation or pullback phase. The evidence does not explicitly detail the immediate catalysts required to push the price back above the entry level in the short term, beyond general market tailwinds.

PRIVATE ANALYST CALL

Judgment: Buy Confidence: high Key evidence: Confirmed coil setup with high ATR structural quality; Furnas project economics ($2B NPV, 27% IRR) and first-quartile cost profile ($0.24/lb); Management guidance for 67.5k-77.5k tonnes copper production in 2026. Key risks: Execution delays on Furnas construction decision; potential institutional selling pressure (e.g., Bank of America reduction); copper price volatility compressing margins. Rating boundary: This is rated Buy rather than Strong Buy because the current price ($39.82) is trading below the conservative entry ($40.40), indicating the immediate momentum has not yet fully re-established the breakout level despite the confirmed setup. A Strong Buy would require the price to reclaim and hold above the entry level with volume confirmation. The rating would drop to Speculative if the Furnas project faces material delays or if the 2026 production guidance is missed. Sizing hint: Position size should reflect the high ATR volatility; consider scaling in as price approaches the $40.40 entry to manage immediate downside risk. Expected path: Management expects to exit the major investment cycle with increased cash generation; the stock should rally as the Furnas project advances toward construction and production targets are met. Expected horizon: 12 to 18 months for the thesis to fully play out as the Furnas project moves from PEA to construction decision and production ramp-up. Failure mode to watch: A sustained breach of the structural support levels combined with a missed production guidance or a significant delay in the Furnas project timeline.