What happened

Nine chipmakers that supply the analog and mixed-signal semiconductors inside cars, factory equipment and phones — the chips that manage power, voltage and real-world signals rather than raw computing — have gained an average of 43% over the past year. But in July they gave most of that recent momentum back together, falling an average of 13% in 30 days. The trigger was not a slowdown in their own end markets. It was a scare in an unrelated part of the chip industry: memory. Samsung's record profit still missed elevated expectations, SK Hynix said it would raise 2026 capital spending 50% to at least $31 billion, and a Shanghai stock debut by Chinese memory maker CXMT reignited fears of oversupply, and the Philadelphia Semiconductor Index fell roughly 19% for the month, its worst since 2008, with every member stock below its 50-day average. Analog names were swept along even though most had nothing to do with memory chips or AI data-center capex.

The businesses, and what's diverging

Texas Instruments (TXN), which makes analog chips that regulate power and signals in industrial gear, cars and consumer electronics, reported second-quarter revenue up 23% year over year to $5.46 billion, beating estimates, with analog revenue up 26%, gross margin up 340 basis points to 61%, and third-quarter guidance raised, with management saying automotive demand is "turning more clearly upward". Analog Devices (ADI), a maker of sensors and signal-processing chips for factory automation, autos and communications equipment, posted book-to-bill well above one and record bookings across its industrial, automotive and communications customers, guiding to roughly $3.9 billion in third-quarter revenue. Microchip Technology (MCHP), which sells microcontrollers and analog chips to industrial, automotive and aerospace customers, guided next-quarter sales up 35% year over year and gross margin to 62-63%, consistent with the inventory correction that has weighed on distributors finally clearing. All three beat and raised guidance in the very window their stocks fell — the clearest sign this is a sector-wide macro rotation, not a verdict on analog demand.

Two names complicate a clean read. Monolithic Power Systems (MPWR), which designs power-management chips including for Nvidia's AI servers, was the only one of the nine to rise in July (+7%), after second-quarter revenue jumped 48% on 164% growth in its AI/server power business; its 70%-plus year-to-date gain has outrun even Nvidia's, meaning its slice of the sector's one-year gain is an AI story wearing an analog label, not evidence the broader auto/industrial cycle has turned. NXP Semiconductors (NXPI), a major supplier of automotive and communications-infrastructure chips, is the genuine laggard: it posted a weak outlook with communications-infrastructure revenue down 27% and industrial/IoT down 11%, hurt by a prolonged glut of EV chips outside China, and it was also July's worst-hit name (-18%) — fundamentals and tape agreeing for once. ON Semiconductor (ON), which makes power chips and silicon-carbide components for electric vehicles, sits between: the desk's own notes describe silicon-carbide device demand still in a correction after the 2024 EV slowdown, even as ON remains the profitable, vertically integrated operator among loss-making SiC peers. The remaining three — Cirrus Logic (CRUS), a fabless maker of audio and power chips mostly for smartphones; Diodes Incorporated (DIOD), which makes discrete diodes and small-signal chips for industrial and consumer electronics; and Alpha and Omega Semiconductor (AOSL), a smaller power-semiconductor maker — fell the hardest in July (-12% to -27%) with limited fresh earnings news, largely riding the sector-wide de-rating.

Valuation and the setup

On the desk's most recent valuation snapshots (dated May 2026, ahead of the Q2 beats, so likely understating today's earnings base), ADI traded near 76x trailing/36x forward earnings, TXN near 50x trailing/38x forward, and MPWR near 118x trailing/67-70x forward — a level MPWR's own risk notes call "no margin for error." MCHP and ON carry no meaningful trailing P/E because earnings are still near trough, trading instead on price-to-sales (11.2x and 6.5x). If the Q2 beats hold, forward multiples on normalized earnings are cheaper than these trailing figures suggest — but that recomputation could not be confirmed directly, since detailed financial statements could not be pulled for eight of the nine names this round. Trend bands show the whole group falling in lockstep from strong or mild uptrends to neutral by July 31 — a synchronized, non-violent de-rating that matches a macro rotation rather than a company-specific breakdown. Verdict: CONFIRMS a genuine recovery at TXN, ADI and MCHP, where earnings and bookings improved as the stocks fell — a real dislocation between business and tape. INCONCLUSIVE for MPWR (AI-power strength papering over its own stretched multiple) and CONTRADICTS at NXPI, where soft auto-chip demand matches the weak stock.

The setup

Where it stands — Nine analog chipmakers fell with the broader semiconductor sector in July even as TXN, ADI and MCHP beat earnings and raised guidance. Would confirm — TXN, ADI and MCHP book-to-bill stays above 1.0 and industrial/auto revenue keeps growing sequentially next quarter. Would invalidate — Distributor inventory or book-to-bill rolls back below 1.0, or NXPI's auto/comms revenue declines persist into a second quarter. Watch next — Texas Instruments' Q3 2026 print (guided $5.65-6.15B revenue) and Analog Devices' Q3 FY26 results (guided ~$3.9B). Valuation — ADI ~36x forward, TXN ~38x forward, MPWR ~67-70x forward versus roughly 30-50x trailing medians a year ago; MCHP/ON trade on price-to-sales given near-trough earnings.