Broadcom, Qualcomm, or TSMC: Why One AI Chip Stock Won Decisively in April

The April 2026 scoreboard for the artificial intelligence (AI) chip trade is in, and the winner is not the most-watched name on Wall Street. Qualcomm (NASDAQ:QCOM | QCOM Price Prediction) stock surged 39.45% in April, decisively beating Broadcom (NASDAQ:AVGO) stock at 34.87% and leaving Taiwan Semiconductor (NYSE:TSM) stock far behind at a 17.19% gain.

The gap of roughly 22 percentage points between QCOM and TSM is the real headline. Taiwan Semiconductor is a massive chipmaker, yet in April the chip designers captured far more upside than the foundry that’s building the wafers.

That divergence signals how the market is pricing AI exposure right now. Architectural leadership at the design level is winning more than manufacturing scale at the foundry level, and Qualcomm stock just rode that preference to the front of the pack.

Qualcomm Wins April Decisively

Qualcomm stock closed March 31 at $128.78 and ended April at $179.58, an explosive month for a name that had been a relative laggard. Even after the rally, QCOM stock was only up 4.16% year-to-date (YTD) through May 1, leaving room for the catch-up trade to extend.

The dominant catalyst was Qualcomm’s OpenAI partnership, announced in late April, which positions the Snapdragon platform as the leading host for on-device AI inference in premium smartphones. The April 29 earnings print reinforced the story, with automotive revenue hitting a record $1.33 billion, up 38% year over year (YoY), and Internet of Things (IoT) revenue growing 9%. Qualcomm CEO Cristiano Amon flagged hyperscaler custom silicon engagements on track for initial shipments later in calendar 2026, with a June 24 Investor Day on Data Center and Physical AI as the next key catalyst.

Broadcom Lands a Strong Second

Broadcom stock posted a powerful 34.87% gain in April and was up 20.85% YTD through April 30. The story centers on custom silicon for hyperscalers, where Broadcom designs application-specific integrated circuits (ASICs) and ships massive volumes of Tomahawk and Jericho networking switches into AI data centers.

Broadcom’s Q1 fiscal 2026 results showed AI chip revenue of $8.4 billion, up 106% YoY, with Q2 guidance of $10.7 billion in AI semiconductor revenue. CEO Hock Tan stated, “Our AI revenue growth is accelerating, and we expect AI semiconductor revenue to be $10.7 billion in Q2.”

AVGO stock finished second partly because Broadcom carries a much larger market capitalization ($1.957 trillion), creating mathematical headwinds for percentage gains. Broadcom stock also entered April with stronger YTD performance than Qualcomm stock, leaving less room for a relative-value catch-up.

TSM Brings Up the Rear

Taiwan Semiconductor stock advanced 17.19% in April, a respectable gain that nonetheless trailed both chip designers. TSM reported strong Q1 2026 numbers on April 16, with revenue of $35.826 billion and a gross margin of 66.2%.

The foundry business simply does not capture as much of the AI premium as the design business does. TSM manufactures chips for Qualcomm, Broadcom, and others, yet investors assign the architectural value to the designers. A persistent geopolitical Taiwan risk discount also weighs on the TSM multiple.

Capital expenditure (CapEx) intensity is another drag on TSM stock. The company is committing tens of billions to new fabrication capacity, including significant Arizona expansion guarantees, which limits free cash flow conversion compared with the asset-light chip designers it serves.

What to Watch Into May

April favored chip designers over chip manufacturers. Within designers, on-device AI exposure (Qualcomm) and custom hyperscaler silicon (Broadcom) outperformed pure-play foundry exposure (TSM) by a wide margin, suggesting the market pays up for original equipment manufacturer (OEM) design wins rather than wafer throughput.

For May, watch for whether Qualcomm delivers on its AI smartphone roadmap and any further OpenAI integration milestones, with the June 24 Investor Day as the next potential QCOM catalyst. Broadcom’s next quarterly report is key for AVGO stock, while Taiwan Semiconductor’s CapEx commentary and monthly revenue prints could set the tone for the foundry trade. Architectural leadership remains the cleanest way to play this leg of the AI cycle, though a moderate position size looks sensible for prudent investors after a month of this magnitude.