Invesco’s Fiona Lim says the AI-fueled semiconductor surge is shifting from a broad, momentum-driven rally to a tougher phase where stock picking and profitability will separate winners from laggards. Speaking on Bloomberg’s Insight with Haslinda Amin on July 3, Lim, who manages Asia ex-Japan equities, warned that the easy gains are likely behind investors:
“The first half was more momentum driven. The AI tide lifted all boats. The stock pickers are about who is going to maintain that level of profitability as capacity expands and maybe there will be demand volatility,” she said. Her framework matters now, as the four companies most exposed to the AI infrastructure boom have already begun to diverge sharply in 2026.
Lim’s core concern is memory. Memory chipmakers saw mid-20% supply growth in 2026, with additional capacity announced for 2027. “Every player is talking about how they will increase, including Singapore. I do think capacity will catch up. And on the demand side, it will remain strong, but as capacity catches up, the pricing may not be as high as what we are seeing today when we are in this type of bottleneck,” she said. She also flagged that “some of the ETFs are the best-selling products on the planet. The best-sold ETF, leveraged ETF, single stock leveraged ETF by a mile,” amplifying short-term swings around these names.
Micron: Peak Pricing Power, Peak Scrutiny
Micron Technology (NASDAQ:MU | MU Price Prediction) is the poster child for Lim’s inflection thesis. Fiscal Q3 revenue hit $41.46B, up 345.7% YoY, with a GAAP gross margin of 84.6% and Q4 guidance calling for gross margin near 86%, per the company’s Q3 press release. CEO Sanjay Mehrotra said, “some of our key customers, we are able to fulfill only 50% to two-thirds of their demand in the medium term.” That is the bottleneck Lim expects to relax.
Micron’s shares are up 241.97% YTD to $975.56, but fell 19.61% in the past week. Forward P/E sits at 7, reflecting market suspicion that fiscal 2027 earnings may not extrapolate.
TSMC: The Pick-and-Shovel Beneficiary
Taiwan Semiconductor Manufacturing (NYSE:TSM) has offered a smoother ride, up 43.59% YTD. CEO C.C. Wei guided to above 30% full-year 2026 revenue growth, and May monthly revenue reached NT$416.98B (+30.1% YoY). Polymarket assigns a 89.5% probability to a Q2 earnings beat, though margin markets cluster around 67%-68%, hinting the beat comes from revenue rather than margin expansion. Lim cited TSMC alongside Samsung as enjoying supernormal profitability that may prove temporary.
NVIDIA: The Leader Is Coasting
NVIDIA (NASDAQ:NVDA) posted Q1 FY27 revenue of $81.62B (+85.2% YoY) and guided Q2 to $91.0B. The stock is up just 4.59% YTD and has slipped 12.46% over the past month. Polymarket assigns only a 65.5% probability to NVIDIA closing above $200 by end-July, and composite sentiment has weakened by 6.44 points over 30 days. Jensen Huang’s message centers on reasoning AI: “The token generation amount, the number of tokens reasoning goes through, is a hundred, a thousand times more than a one-shot chatbot.” Demand is durable, but that doesn’t mean these stocks are immune from multiple compression.
AMD: The Challenger With a Signature Deal
AMD (NASDAQ:AMD) has rallied 141.79% YTD to $517.82, propelled by the Meta partnership to deploy up to 6 GW of AMD Instinct GPUs. CEO Lisa Su noted, “Customer engagement around MI450 Series and Helios is strengthening, with leading customer forecasts exceeding our initial expectations.”
The catch: a forward P/E of 59 leaves no room for execution slippage, and insider activity across all four names skews to net selling.
What Lim Is Watching
Lim’s key demand-side concern is inventory buildup. Customers “paying for such extensive memory for an extended time… might pause and think about how much inventory I need.” If prices are expected to fall in the second half of 2027 and into 2028, buyers may slow purchases, easing today’s pricing power.
Her bottom line is a shift in mindset. “I am definitely more mindful to think of what the market expectation is versus what can be realistically achieved.” For investors in Micron, TSMC, NVIDIA, and AMD, that gap between expectation and reality is likely to define where returns come from through the rest of 2026.
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