Freeport, Teck, and Southern Copper each dropped 7-8% in a day on tariff uncertainty — that is a headline-driven dump, not a collapse in copper demand. Reporting shows tariffs are just one layer of worry on top of the war, meaning the selloff is fear-stac

Verdict: a credible washout setup that has not confirmed yet — wait for the close

The thesis is coherent: per the Yahoo Finance piece on September 10, Freeport sank 8% and Teck and Southern Copper fell 7% in a single session on tariff doubt, while FCX's June quarter showed revenue up 10.6% to $6.9B and operating cash flow up 37% to $2.0B — fundamentals that look nothing like a demand collapse. The strongest point for the trade is the defined risk structure: a 2.5% stop against a 5% take-profit, position sizing capped at 25%, and a backtest on the same program returning 72% over five years on 7 trades with a worst drawdown of 17.8%. The strongest point against is that this cluster can drop 7-8% in one day — well beyond a 2.5% stop — so a headline-driven gap can push out of a position on noise before any rebound develops, and Freeport's June 30 ownership filings (a delayed disclosure, not current) show roughly $6.9M in net insider open-market selling. No robust parameter setup was established: the sensitivity evaluation exceeded its time budget without a nearby-parameter recommendation, so the exact configuration shown was not validated for robustness. The verdict would flip if the third-quarter SEC refresh shows Freeport's margin compression stabilizing alongside a confirmed entry close above each 50-day average; conversely, closes back below the second supports ($68.00 for FCX, $184.08 for SCCO, $66.42 for TECK) would invalidate the rebound thesis outright. Until then, this is a watch-with-alerts situation, not a buy at the open.

Trade now: one bar away from a live entry

None of the three entries has fired yet, but this is a near setup, not a dead one. FCX closed at $71.36 versus its 50-day average of $69.20 — it needs a close above that level, about $2.16 away. SCCO closed at $196.29 against a $194.30 threshold, roughly $1.99 away. TECK closed at $65.61 versus $65.08, only $0.52 away. On momentum, FCX's RSI (14) sits at 41.8 and SCCO's at 40.9, both already inside the required 40-to-48 band, with trend strength readings far below the 35 cap. TECK is the laggard: its RSI is 38.3, so it needs to climb about 1.7 points above 40 before it qualifies. The idea argues the tariff-headline selloff was fear-stacked rather than a demand collapse, and the risk framing is defined. Each position carries a hard stop at a 2.5% loss and a take-profit at roughly 5.0% — an effective reward-to-risk near 2:1 per position — plus a structural stop below the second support level and a 60-bar time exit. Position sizing is fixed-risk, with no single name above 25% of the book. The completed backtest supports the setup's shape: over five years, the three-name long program returned 72.1% across 7 trades with a 57.1% win rate and a worst drawdown of 17.8%; the trailing 12-month window ran at a 36.8% return with an 85.7% win rate. That does not mean today is a guaranteed entry — it means the conditions are close enough that waiting here has a concrete, measurable meaning: a daily close above each stock's 50-day average (and, for TECK, an RSI back above 40). Concretely, waiting means: do not buy at the open on anticipation. Set alerts at $69.20 for FCX, $194.30 for SCCO, and $65.08 for TECK, and check TECK's RSI against 40 each evening. If a close crosses the line with the RSI band intact, the entry is live the next bar. If prices fall back first, the setup resets rather than invalidates — the stop only matters once a position exists.

Why the bull case has real teeth

The thesis argues these three miners got dumped on tariff headlines, not on copper demand, and the numbers back that framing. Freeport's June 2026 quarter shows revenue up 10.6% sequentially to $6.9 billion, gross margin expanding to 30%, and operating cash flow jumping 37% to $2.05 billion — that is a company generating more cash than it did the quarter before, not one under demand stress. Southern Copper's same-period results are stronger still: revenue of $4.29 billion, gross margin at 67.6% (a 4.4% sequential improvement), net income up 5.9% to $1.67 billion, and free cash flow up 25% to $1.57 billion. These are not distressed balance sheets reacting to collapsing end-demand. Peer percentile rankings confirm the quality claim. Southern Copper sits at the 95th percentile of gross margin and the 97th percentile of operating margin among 255 Materials-sector peers, with free cash flow in the 94th percentile. Freeport is at the 85th percentile for operating margin and the 92nd percentile for free cash flow. Teck, the weakest of the three on free cash flow, still posted a 39% gross-margin expansion and 245% net-income growth year-over-year in its latest full period, with revenue up 18.7% — an improving trajectory even if the cash-conversion number lags. The completed backtest supports the washout-rebound mechanics specifically on the Freeport pair. Over 60 months the long entry produced 7 trades with a 57% win rate and a cumulative return of 72%, with a maximum drawdown of 17.8%. Over the trailing 12 months the same setup went 7-for-7 with a cumulative return of 37% and a maximum drawdown of 13.4%. These are the signature of a strategy that works when large liquid names get sold into a news vacuum and mean-revert — exactly the scenario the thesis describes for the September 10 tariff-driven selloff in which Freeport dropped 8% and Teck and Southern Copper each dropped 7%, per the Yahoo Finance piece on copper stocks tumbling as tariff doubt reversed a record rally. The structural argument also holds: with the broader market only three losing days into a pullback and no confirmed downturn (per the same-day Yahoo market live coverage), buying into a single-day 7-8% flush in companies generating multi-billion-dollar operating cash flow at sector-leading margins is a bet on sentiment normalizing rather than on a demand collapse. The strategy's fixed 2.5% stop with a 5% take-profit and a maximum 25% position size provides defined downside if the tariff fears do turn out to be fundamental rather…

Scores

• Conviction score breakdown: 58
• Thesis support: 65
• Trade readiness: 58
• Risk quality: 48
• Backtest evidence: 62
• Fundamentals trend: 55

Watch items

• FCX — Close vs 50-day EMA
• FCX — RSI (14)
• FCX — ADX (14)
• FCX — Close vs second support
• SCCO — Close vs 50-day EMA
• SCCO — RSI (14)
• SCCO — Close vs second support
• TECK — RSI (14)
• TECK — Close vs 50-day EMA
• TECK — Free cash flow (annual)
• FCX — Insider open-market activity