Critical Minerals — Oct 19 – Oct 23, 2026 (Wk 43): Critical Minerals: Micron Investment, Elektros’ Rise, and European Lithium Deal

TL;DR — This week saw a major chipmaker announce U.S. critical mineral processing investment, signaling a potential shift in supply chains. Several critical mineral companies experienced significant stock movements, both positive and negative, often linked to strategic reviews, listing changes, or acquisition approvals. The broader market context suggests continued attention on securing diverse critical mineral supplies.

What moved

• Micron announced plans to invest in U.S. critical mineral processing, which could support its growth story by diversifying its supply chain for chip manufacturing. This indicates a move by a major technology company to secure domestic critical mineral resources. [Barchart.com]
• Elektros shares advanced significantly, rising 51.52% in a single day, as the company's critical-minerals strategy took shape. This surge was linked to its pursuit of a broader critical-minerals vision, including a review of opportunities in American lithium and EV innovation. [The Globe and Mail] [The Globe and Mail] [Yahoo Finance] [Stock Titan] [Yahoo Finance]
• Sunrise Energy Metals shares declined 15% as the scandium developer extended its slide amid a plan to move its listing to Nasdaq. A change in listing venue can sometimes be associated with shifts in investor perception or access to capital. [International Business Times Australia]
• Critical Metals shares fell 7% despite shareholder approval of its deal with European Lithium. Conversely, USA Rare Earth and United States Antimony also saw declines of 5% and 3% respectively. This suggests that even with strategic advancements like deal approvals, market sentiment for some critical mineral companies can still be negative. [24/7 Wall St.]
• European Lithium set the exchange ratio for its takeover scheme of Critical Metals, a procedural step in the acquisition process. This clarifies the terms for shareholders involved in the transaction. [The Globe and Mail]
• US1 Critical Minerals scheduled its Annual General Meeting (AGM) to confirm its board and expand its capacity for raising capital. AGMs are important for corporate governance and for companies to secure the financial flexibility needed for development. [The Globe and Mail]

The why behind the week

• The interest from chipmakers like Micron in securing critical mineral supply beyond China highlights a broader industry trend towards supply chain diversification. This is driven by the strategic importance of these minerals for advanced technologies and a desire to reduce geopolitical risks associated with concentrated supply. [Barchart.com] [Simply Wall Street]
• Companies like Elektros are actively pursuing multi-front opportunities, including American lithium and EV innovation, indicating a strategic focus on key critical minerals for the energy transition. The significant share price movement reflects market reaction to these strategic developments and potential growth areas. [The Globe and Mail] [The Globe and Mail] [Yahoo Finance] [Yahoo Finance]
• Japan's interest in Australian miners suggests a focus on securing critical mineral resources from stable, allied nations. This reflects a global effort by industrial nations to ensure reliable access to the materials essential for their economies and technological development. [Australian Resources & Investment]
• The idling of production by companies like Albemarle at its Kemerton facility can impact the supply dynamics of critical minerals like lithium. Such operational adjustments can be influenced by market conditions or strategic decisions, affecting overall availability. [Simply Wall Street]
• The decline in shares for some companies, even with positive developments like deal approvals, indicates that market sentiment for critical mineral stocks can be complex and influenced by factors beyond individual corporate actions. No clear catalyst for the declines of USA Rare Earth and United States Antimony was present in our sources. [24/7 Wall St.]

📄 Filings that matter (8-Ks, straight from EDGAR)

• $RGLD — reported results (earnings 8-K) [SEC filing] 2026-10-20
• $TMQ — Reg FD disclosure; exhibits [SEC filing] 2026-10-21

The macro backdrop

Every theme swims in this tide — judge the week’s moves against it.

📅 On the calendar — and why it matters here

• Fri Oct 23 — FOMC (Fed rate decision / minutes). the single biggest scheduled market mover — a rate surprise in either direction repriced everything, hardest on rate-sensitive names (growth, REITs, utilities, homebuilders). Watch for a surprise vs expectations — that gap, not the number itself, is what moves markets.
• Thu Oct 29 — GDP. the broadest growth read — confirms or breaks the soft-landing thesis. Watch for a surprise vs expectations — that gap, not the number itself, is what moves markets.
• Thu Oct 29 — PCE inflation (the Fed's gauge). a hot print pushes rate-cut odds out (pressuring long-duration assets); a soft print does the reverse — one of the highest-impact releases. Watch for a surprise vs expectations — that gap, not the number itself, is what moves markets.
• Tue Nov 3 — JOLTS (job openings). labor-market tightness — a cooling read eases wage-inflation fears. Watch for a surprise vs expectations — that gap, not the number itself, is what moves markets.
• Fri Nov 6 — Jobs report (payrolls + unemployment). sets the growth-vs-recession narrative — a weak number lifts recession odds (hits cyclicals, consumer, financials); a strong one can paradoxically pressure rates. Watch for a surprise vs expectations — that gap, not the number itself, is what moves markets.

What to watch next

• The 10-year Treasury yield at 5.13% and high-yield credit spread at 3.27% are important indicators for critical mineral developers. Higher interest rates can increase the cost of financing for new projects, which are often capital-intensive, potentially impacting development timelines and profitability for the group. [macro data]
• The VIX at 20.24 suggests a moderate level of market volatility. For critical mineral stocks, which can be sensitive to broader market sentiment and commodity price fluctuations, higher volatility can lead to more pronounced price swings, reflecting increased uncertainty among investors. [macro data]
• The expected inflation rate of 2.32% is a factor for critical mineral companies, as inflation can influence the cost of inputs, labor, and equipment. Managing these costs is crucial for maintaining margins in resource extraction and processing. [macro data]
• The Shiller CAPE ratio at 40.58 indicates a high valuation for the broader market. While not directly tied to critical minerals, a highly valued market can sometimes influence investor appetite for more speculative or growth-oriented sectors like critical minerals, especially if there's a shift towards value or defensive assets. [macro data]
• The median price-to-model-value across one stock at 1.45x provides a snapshot of how the market is valuing a specific critical mineral company relative to its intrinsic value. This metric can offer insight into whether the market perceives a company as over or undervalued, which can influence investment decisions. [SAVNG data]
• The absence of recorded open-market insider buys (routine/10b5-1 stripped) in this theme this week suggests that company insiders did not make significant non-scheduled purchases of their own stock. Insider buying can sometimes signal confidence in a company's future prospects, so its absence is a data point for market observers. [SAVNG data]

This week’s headlines (sources)

• Micron Says It Will Invest in U.S. Critical Mineral Processing. That Supports the MU Stock Growth Story. — Barchart.com, Oct 23
• What does Japan really want from Australian miners? — Australian Resources & Investment, Oct 23
• Sunrise Energy Metals Shares Sink 15% as Scandium Developer Extends Slide Amid Plan to Move Listing to Nasdaq — International Business Times Australia, Oct 23
• Elektros Marks 51.52% Daily Share Advance as Critical-Minerals Strategy Takes Shape — The Globe and Mail, Oct 23
• Elektros Shares Rise 51.52% in a Notable Trading Day as Company Advances Multi-Front Opportunity Review — The Globe and Mail, Oct 23
• US1 Critical Minerals Sets AGM to Confirm Board and Expand Capital-Raising Capacity — The Globe and Mail, Oct 23
• Is Albemarle (ALB) Undervalued After Idling Kemerton Production? — Simply Wall Street, Oct 23
• Elektros Pursues a Bigger Critical-Minerals Vision—With American Lithium on the Radar — Yahoo Finance, Oct 22
• Shares rose 51.52% in one day; Elektros' New York lithium review remains preliminary. — Stock Titan, Oct 22
• Elektros Celebrates 51.52% Daily Stock Gain as it Pursues a Bolder American Lithium and EV Innovation Vision — Yahoo Finance, Oct 22
• Critical Metals Sinks 7% Despite Shareholder Approval of European Lithium Deal; USA Rare Earth Drops 5%, United States Antimony Falls 3% — 24/7 Wall St., Oct 22
• Rare Earth Stocks Gaining Attention As Chipmakers Seek Supply Beyond China — Simply Wall Street, Oct 22
• Is USA Rare Earth Stock a Once-in-a-Generation Reshoring Opportunity? — Yahoo Finance, Oct 22
• Permit Push Might Change The Case For Investing In TMC the metals (TMC) — Simply Wall Street, Oct 22
• This ASX critical minerals share could more than double: Broker — The Motley Fool Australia, Oct 22
• European Lithium Sets Exchange Ratio for Critical Metals Takeover Scheme — The Globe and Mail, Oct 22

Every claim above cites its source — headlines link to the original outlet; [SAVNG data] marks our own EDGAR-computed figures. Where our sources don’t explain a move, we say so rather than guess. All weekly roundups →