SITM vs SLAB: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: SITM is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. SITM and SLAB share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined SITM and SLAB exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

SiTime Corporation is a fabless semiconductor company that created and dominates the precision-timing category. Its products, MEMS (micro-electro-mechanical systems) oscillators, resonators and clock chips, generate and manage the timing signals that keep electronics synchronized, and it positions them as smaller, more rugged and more programmable replacements for the century-old quartz-crystal parts they compete against. End markets span AI data centers, communications and enterprise infrastructure, automotive and ADAS, aerospace and defense, industrial, and mobile and consumer devices.

Full SITM guide

Silicon Laboratories, or Silicon Labs, is an Austin-based semiconductor company focused on wireless connectivity for the Internet of Things. After selling its Infrastructure and Automotive business to Skyworks Solutions in 2021, it became a pure-play IoT connectivity designer. Its chips (wireless SoCs, microcontrollers, and modules, paired with software stacks and its Simplicity Studio development tools) support Bluetooth, Zigbee, Z-Wave, Thread, Matter, Wi-Fi, and proprietary protocols. The company reports in two segments: Industrial & Commercial, which serves smart buildings, metering, industrial automation, and connected commercial devices, and Home & Life, which serves smart-home, consumer, and connected-health products. Its differentiator is multi-protocol SoCs that give developers flexibility across standards, competing against players like Nordic Semiconductor, NXP, Espressif, and Microchip.

Full SLAB guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• SITM drivers: AI-datacenter timing content; MEMS displacing quartz.
• SLAB drivers: Pending Texas Instruments acquisition; Deal timeline and regulatory approval.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The dominant risk is valuation: at a market cap near $19B to $21B on roughly $327M of trailing revenue, the stock trades at an extreme price-to-sales multiple and reports GAAP losses, so any growth stumble could compress the multiple sharply. For SLAB, the central risk is specific to the pending acquisition: if the Texas Instruments deal is delayed, renegotiated, or fails to receive regulatory or shareholder approval, the stock could fall back toward its pre-deal level, well below $231.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick SITM if you believe its drivers more; SLAB if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the SITM and SLAB guides.

SITM. SiTime is growing revenue rapidly (Q1 2026 up about 88% year over year) and is profitable on a non-GAAP basis, but it still posts GAAP losses, which is why its trailing P/E is negative. With a market cap many times its trailing revenue, the shares carry a very high price-to-sales multiple that assumes sustained high growth. The July 2026 Renesas acquisition adds scale and debt and changes the revenue base going forward.

SLAB. Figures are approximate and tied to the asOf date; verify live numbers before acting. Because of the all-cash acquisition, traditional valuation multiples matter less than the fixed $231 offer price and the odds and timing of the deal closing. The stock typically trades at a modest discount to $231, and that gap reflects the market's estimate of completion risk plus the wait until closing. If the deal were to fall through, the shares would likely re-rate toward standalone fundamentals, which are more cyclical and lower than the offer implies.

Headline figures (approximate, JULY 2026): SITM shows revenue (ttm, fy2025) ~$327M, q1 2026 revenue ~$114M (+88% YoY), non-gaap gross margin (q1 2026) ~64.5%, non-gaap eps (q1 2026) ~$1.44; SLAB shows acquisition price $231.00 per share in cash from Texas Instruments (announced Feb 4, 2026; approximately $7.5 billion enterprise value), expected close First half of 2027, subject to regulatory approvals and a Silicon Labs shareholder vote, revenue (q1 2026) Approximately $214 million, up roughly 20% year over year, segment mix (q1 2026) Industrial & Commercial approximately $128 million (up ~33%); Home & Life approximately $86 million (up ~5%).

SITM and SLAB are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined SITM and SLAB exposure against your real portfolio. It is not an investment adviser.