The Wide Bandgap Chips — Silicon Carbide & Aluminum
Two niche material plays that punch above their weight in AI, EVs, and defense.
As power densities rise — in EV inverters, in data-center power supplies, in solar inverters — traditional silicon power semiconductors hit physical limits. Silicon carbide (SiC) and gallium nitride (GaN) are "wide bandgap" semiconductor materials that handle higher voltages, higher temperatures, and higher frequencies. Wolfspeed is the pure-play SiC substrate maker — bet-the-company turnaround story in 2026. Meanwhile, aluminum and steel have their own pockets of strategic relevance — particularly for defense (every missile, every aircraft body) and infrastructure. Century Aluminum and Nucor are the cleanest US-listed plays.
SiC substrate is a true single-process bottleneck — growing SiC crystals is harder than silicon by orders of magnitude. Only a handful of facilities globally can do it. Aluminum smelting capacity in the US has shrunk 70% in 20 years; the few survivors are strategic.
4 names on the watchlist
Largest pure-play SiC substrate & device maker — restructuring play
Once the darling of SiC, now a restructuring penny stock . Operates the largest 200mm SiC substrate fab on Earth (Mohawk Valley, NY). Pivoted out of LED business to focus on power devices for EVs + industrial. Filed Chapter 11 in mid-2025 and emerged restructured. The asset is real and strategic; the equity is highly speculative .
Largest US steel producer — electric-arc furnace + low cost
Mini-mill model = lower cost than integrated mills. Diversified end-markets : construction, auto, energy, durable goods. New West Virginia sheet mill ($3B+ capex) targets data-center construction supply. Aggressive buybacks. Less exciting than tech but a quality cyclical compounder.
Only US primary aluminum producer with green-field expansion plans
US aluminum smelting has collapsed from ~5 million tons/year in 1980 to ~700,000 tons today. Century is one of the last men standing — Hawesville KY, Sebree KY, Grundartangi (Iceland). Got a $500M DOE grant to build the first new US smelter in nearly half a century — strategic for defense and infrastructure. Highly leveraged to aluminum + power costs.
Largest US flat-rolled steel + iron ore — auto + appliance + defense
Lost the Nippon Steel / US Steel deal in 2024 but remains the only fully integrated US flat-rolled producer . Volatile, cyclical, but uniquely positioned in any defense/auto/appliance reshoring scenario. Trades like a deep value name today. Optionality on Section 232 tariffs and a potential US Steel re-do under different ownership.