2 Undervalued AI Stocks to Buy in 2026 and Hold for Decades

Amazon is committing more than $125 billion to its AI program in 2026 (after similar spending in 2025) as CEO Andy Jassy positions the company to capture a shift from on-prem IT (about 85% of current spend) to cloud services, while the stock trades under 34x trailing 12-month earnings. Taiwan Semiconductor (TSMC), which handles roughly 85% of global start-up semiconductor prototypes, reported a 54% operating margin in Q4 2025 and 21% year-over-year sales growth, and the shares are described as trading at about 32x trailing-12-month sales despite substantial multi-quarter gains. Both stories highlight material AI-driven capex and revenue tailwinds that could support multi-year growth and inform allocation decisions across cloud, semis, and related retail/advertising exposures.

Analysis

Market structure: AWS, TSM and GPU/accelerator suppliers (e.g., NVDA ecosystem, ASML indirect) are primary winners as Amazon’s >$125B/year AI capex drives multi-year demand for wafers, GPUs and datacenter services; losers are legacy on‑prem IT vendors and small foundries with limited advanced-node capacity. Pricing power shifts to a concentrated supplier set (TSM + ASML + leading GPU makers), tightening supply with wafer lead times of 6–12 months and likely spot premiums in the next 2–8 quarters.

Risk assessment: Tail risks include US/China export controls, an antitrust cloud probe, or an AI adoption stall that could cut projected cloud migration by >30% (high‑impact, low‑probability). Near term (days–weeks) expect volatility around earnings and capex guidance; medium (3–12 months) watch margin compression from heavy capex; long term (2–5 years) benefits accrue to scale players if enterprise migration approaches even 30–50% of current on‑prem spend.

Trade implications: Favor core long exposures to AMZN (AWS + AI services) and TSM (advanced foundry) with option overlays to control drawdowns: size positions as durable 2–4% portfolio weights with 12–36 month horizon. Use pair trades (long TSM / short INTC) to express foundry consolidation and buy-dated call spreads or LEAPS on AMZN/TSM to lever upside while selling premium against short-term volatility before earnings.

Contrarian angles: Consensus underestimates short-term margin pressure from Amazon’s capex spike — a >20% pullback in AMZN would be a tactical buying window, not a permanent thesis break. Conversely, TSM may be underpriced given 54% op margin and 21% YoY sales growth; if bookings remain firm, re-rating to 30–40x forward profits is plausible. Unintended consequence: overordering of accelerators could create a 12–18 month inventory glut, amplifying cyclicality in semicap names.

Key Decisions for Investors

• Establish a 2–3% long position in AMZN shares within the next 10 trading days as a 12–24 month core AI/cloud growth bet; add another 1% on any pullback >12% within 30 days. Set a hard stop-loss to trim 50% of the position if AWS gross margin contracts >300 bps over two consecutive quarters or if YoY AWS revenue growth falls below 15% for two quarters.
• Build a 3–4% core long position in TSM (NY:TSM) over the next 30 days targeting a 24–36 month hold; hedge downside by buying 3‑month ATM puts sized to 30% of the position before the next earnings release (expected within 45 days). Reduce exposure by half if sequential bookings fall >15% or if reported fabs experience >10% delay in EUV tool deliveries.
• Execute a relative-value pair: long TSM (notional 2% portfolio) / short INTC (notional 2% portfolio) to capture foundry share premium over 12 months. Close or rebalance the pair if the spread compresses to 50% of entry or after 12 months, whichever comes first.
• If seeking leveraged upside with defined risk, buy 12‑month AMZN call spreads (buy ATM call, sell ~120% strike) sized to 0.5–1% of portfolio; take profits at +50–100% return or cut losses at −30%. Simultaneously monitor US export-control announcements and ASML shipment cadence monthly—if new export restrictions hit advanced-node equipment within 60 days, reduce semicap option exposure by 75%.