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Invesaro publishes investment theses and settles them against the market in public: with a date, a basket of companies and a verdict.

Investment thesis

Tin, the Forgotten Metal of the AI Era: Three Supply Bottlenecks Collide with Solder Demand in Every Server

LivePublished July 23, 2026120-day horizonsupply and demand
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In short

  1. What is happening
    Myanmar: sluggish restart of Man Maw mine
  2. Why it matters
    The small, concentrated tin market enters a deficit: Myanmar, Congo, and Indonesia choke supply while the AI hardware boom boosts solder demand, enriching pure-play miners.
  3. Who benefits
    Alphamin Resources Corp., Metals X Limited, Yunnan Tin Co., Ltd.
  4. What must hold
    Assumptions are statements that must stay true for the thesis to make sense.
    Assumptions: 5. See the assumptions
  5. When is the verdict
    The horizon is the time we give a thesis. That many days after publication we settle it: we compare the basket of companies with the market benchmark and give a verdict.
    November 20, 2026, 120 days after publication
  6. Our score at publication
    A score from 0 to 100 given on the day of publication, before the market has verified anything. On the results page we check in public whether higher-scored theses do better.
    57 out of 100
Basket return
+8.3%
equal weight, since publication
The market over the same window
+2.3%
benchmark for this basket
Edge over the market
+5.9%
in percentage points

Companies in the basket

AFMAlphamin Resources Corp.MLXMetals X Limited000960Yunnan Tin Co., Ltd.

The argument

The Invisible Metal of Electronics

Tin represents one of the smallest and most neglected metal markets globally: annual worldwide consumption stands at roughly 370,000-380,000 metric tons, approximately one-hundredth the size of copper. Roughly half of this demand is consumed as solder-the indispensable conductive glue holding together every printed circuit board, from smartphones to AI accelerator clusters. A market of this miniature scale lacks buffers: a disruption of merely a few percentage points of global supply suffices to tip the physical balance into acute deficit.

What this thesis rests on

Each one is a statement that has to be true. We go back to every live thesis on a schedule and check these against public sources, so each leg carries either what we found or the date we look next.

Archive: reviews of this thesis are paused. Last review September 14, 2026.

  1. Myanmar's Man Maw mine in Wa State does not return to pre-August-2023 output during the horizon: Chinese imports of tin concentrate from Myanmar stay below their 2022 monthly average through 20 November 2026.

    regulatory · Supported

    A source confirms this · September 14, 2026

    ICG report via AFP, 10 Sep 2026: Man Maw is in a "slow restart", ore moving again but output "well below pre-suspension levels". China's tin ore/concentrate imports from Myanmar in H1 2026 were nearly 40,000 t, about 6,700 t/month, against a 2022 total near 187,000 t, i.e. roughly 15,600 t/month.

    See the source

  2. Alphamin's Bisie mine, roughly 6% of world supply, suffers no evacuation or suspension lasting more than 30 consecutive days between 23 July 2026 and 20 November 2026.

    operational · Open

    Checked September 14, 2026, nothing published either way

  3. Alphamin keeps all-in sustaining cost below USD 20,000 per tonne of tin sold in every quarter reported during the horizon, preserving the operating leverage the thesis rests on.

    financial · Open

    Checked September 14, 2026, nothing published either way

  4. Indonesian refined tin exports stay below 60,000 tonnes on a 12-month basis through 20 November 2026, with RKAB mining quota approvals still delayed or partially withheld.

    regulatory · Open

    Checked September 14, 2026, nothing published either way

  5. Electronics solder demand does not stall: reported global semiconductor sales stay above the year-earlier level in each month from July 2026 to November 2026.

    competitive · Supported

    A source confirms this · September 14, 2026

    SIA/WSTS data reported 4-8 Sep 2026: July 2026 global semiconductor sales were USD 146.8 billion, up 135.1% from USD 62.5 billion in July 2025 and up 6.4% from June. August through November months are not yet reported.

    See the source
Show the causal chain step by step
  1. Myanmar: sluggish restart of Man Maw mine
  2. Indonesia: licensing turmoil and depleting deposits
  3. Congo: Bisie in the shadow of M23 conflict
  4. AI hardware boom drives solder consumption
  5. Deficit in a small market, inventories near lows
  6. Tin prices remain structurally elevated
  7. Scarce pure-play tin miners expand margins

This thesis, over time

What has happened since publication. Every entry is computed as of its own date, from price history.

September 21, 2026

Day 60 of 120: basket +8.3%

The thesis is halfway to its verdict. The equal-weight basket stands at +8.3% since publication day. The benchmark (S&P 500) returned +2.3% over the same window, so the basket is ahead of its market by 5.9 percentage points. The strongest contributor is MLX (+30.1%), the weakest is AFM (-8.0%). 60 days remain until the verdict.

September 14, 2026

Review: 2 of 5 assumptions confirmed

We went back to this thesis on day 53 of 120 and checked each of its 5 assumptions against public sources. Confirmed by the sources: 2. No news either way: 3. The equal-weight basket stands at +5.2% since publication day. The benchmark (.INX) returned +3.4% over the same window, so the basket is ahead of its market by 1.8 percentage points. 67 days remain until the verdict.

August 29, 2026

Review on day 37: nothing moved

We went back to this thesis on day 37 of 120 and checked each of its 5 assumptions against public sources. No news either way: 5. The equal-weight basket stands at +12.3% since publication day. The benchmark (.INX) returned +4.1% over the same window, so the basket is ahead of its market by 8.2 percentage points. 83 days remain until the verdict.

August 22, 2026

Day 30 of 120: basket +11.3%

The first quarter of the horizon is behind this thesis. The equal-weight basket stands at +11.3% since publication day. The benchmark (S&P 500) returned +3.6% over the same window, so the basket is ahead of its market by 7.7 percentage points. The strongest contributor is MLX (+22.9%), the weakest is AFM (-2.0%). 90 days remain until the verdict.

August 5, 2026

Basket crossed +10% since publication

This basket is at +10.3% since publication, 13 days after the thesis was posted. The benchmark (S&P 500) returned +4.3% over the same window, so the basket is ahead of its market by 6.1 percentage points. The strongest contributor is 000960 (+17.6%), the weakest is AFM (-1.0%). This is not a change of status: the horizon keeps running and the verdict only lands once it expires.

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This is analysis, not investment advice and not a recommendation to buy or sell anything. We publish it and track it in public, mistakes included. Any decision is yours and yours alone.