SITM · SiTime Corporation · Stock research

Refresh of coverage first published 2026-04-19; last updated 2026-08-15, when the reference close was $711.91.

SITM — SiTime Corporation

Current Thesis

The August note argued the 2026-08-05 print had resolved the business-versus-chart split in favour of the business: Q2 revenue $157.432M against $146.377M consensus (+127% YoY, +39% QoQ), adjusted EPS $2.34 versus $1.95, CED (communications/enterprise/datacenter) revenue crossing $100M for the first time at $101.2M (+181% YoY, +34% QoQ), and a Q3 guide of $285–295M against a $177.0M street number. That fundamental step has not been contradicted by anything dated since. The tape has moved the other way anyway.

Measured on the adjusted daily series, the close went from $711.91 on 2026-08-14 to $614.83 on 2026-08-21. That leaves the name 31.8% below the 2026-05-11 all-time-high close of $901.48, with a three-month price change of -15.6% and RSI(14) at 55.7, down from 68.7 a week earlier. Form 4 execution prices date where the post-print swing traded: director Edward H. Four sessions later the market cleared roughly 18% lower. GuruFocus flagged a 9.1% single-session decline to $618.71 on 2026-08-19.

The inference — and it is an inference, not a disclosure — is that the marginal buyer for the guide-driven re-rate was exhausted within about eight sessions of the print. Benchmark initiated coverage with a Buy and an $850 target on 2026-08-20, and the shares closed the following session at $614.83. New sell-side coverage arriving into a falling tape is the specific observation that dates the narrative's position in its life-cycle.

Bullish and bearish views on SiTime Corporation

The model's bull view on SiTime Corporation (SITM), in brief: Q3 2026 guidance (2026-08-05 call): revenue $285–295M versus $177.0M consensus, adjusted EPS $3.50–$3.65 versus $2.20, ~68% gross margin target — with roughly $85M of the range attributed to the acquired Renesas timing (TPD) book, leaving an implied step-up in the legacy… The bear view: Insider distribution ran continuously through the entire post-print window with no offsetting purchases: Kreindl 1,050 shares for $757,750 on 2026-08-07 (350 @ $735, 700 @ $715); EVP worldwide sales Lionel Bonnot 1,500 @ $725 on 2026-08-10; director Katherine Schuelke 500 @… Both cases follow in full.

Bull Case

• Q3 2026 guidance (2026-08-05 call): revenue $285–295M versus $177.0M consensus, adjusted EPS $3.50–$3.65 versus $2.20, ~68% gross margin target — with roughly $85M of the range attributed to the acquired Renesas timing (TPD) book, leaving an implied step-up in the legacy business alongside the acquisition.
• Q2 2026 actuals (2026-08-05): revenue $157.432M, +127% YoY and +39% QoQ; adjusted EPS $2.34 against a $1.95 estimate.
• CED revenue $101.2M in Q2, +181% YoY and +34% sequentially — disclosed segment revenue, not modelled end-market share.
• Renesas timing acquisition closed 2026-07-01, adding 550+ clocking products for ~$1.5B cash plus ~3.56M shares; management described the acquired book as roughly three-quarters AI-datacenter-comms.
• Coverage expanded rather than contracted after the print: UBS to $840 and Needham to $900 on 2026-08-06, Benchmark initiating at Buy / $850 on 2026-08-20.
• The 2026-07-18 low — an intraday range of $520.02–$571.21 — has not been retested at any point since the print.

Bear Case

• Insider distribution ran continuously through the entire post-print window with no offsetting purchases: Kreindl 1,050 shares for $757,750 on 2026-08-07 (350 @ $735, 700 @ $715); EVP worldwide sales Lionel Bonnot 1,500 @ $725 on 2026-08-10; director Katherine Schuelke 500 @ $698.05 on 2026-08-11; Kreindl again 350 @ $700 on 2026-08-14; Frank 1,000 @ $745 and Kreindl 345 @ avg $750.12 on 2026-08-17. That is six filings in nine sessions, extending the six-month pattern of 31 transactions and zero buys documented in July.
• Two 2x leveraged single-stock ETFs referencing SiTime launched on 2026-08-13, alongside Everspin and UMC products. Leveraged single-name wrappers arrive after a story has retail attention, and their daily rebalancing widens drawdowns.
• Retail-facing coverage clustered at the same time: SiTime appeared in a 2026-08-14 "5 AI Stocks with Strong Growth to Buy on the Rebound" listicle, four sessions before the 2026-08-19 decline.
• The aggregate consensus target of $668.12 published 2026-08-09 sits above the 2026-08-21 close of $614.83 but well below the $840–$900 cluster, so the dispersion in published targets is roughly $230 wide. Any single target quoted for this name needs its date checked.
• residual supply priced well above the current market.
• Capital structure carries $1.2B of 0% converts due 2031 plus $900M of committed bank debt against a business whose growth is concentrated in one end market.
• Nothing company-generated resolves before the Q3 print, estimated at ~2026-11-04. Roughly ten weeks of price action with no disclosure to grade against.

Setup & Price Structure

• Reference close 2026-08-21: $614.83. Distance from the 2026-05-11 all-time-high close of $901.48: -31.8%. Three-month price change: -15.6%. RSI(14) 55.7, versus 68.7 at the 2026-08-14 close of $711.91.
• The structure that carried the post-print move is the ~$560 shelf lost during July and recovered in a single session on 2026-08-06, when the shares traded more than 30% higher. Below it sits the 2026-07-18 base at $520.02–$571.21.
• The post-print swing area is dated by filings rather than estimated: insiders transacted at $745 and $750.12 on 2026-08-17. Price has made no attempt on that area since.
• RSI at 55.7 places the name mid-range — neither washed out nor extended — which is the least informative reading a momentum frame can get, and it arrives with no dated resolver in front of it.
• The narrative is saturated. What dates it: the 2026-08-13 launch of 2x leveraged single-stock ETFs, the 2026-08-14 retail listicle placement, a fresh Buy initiation at $850 on 2026-08-20 that the tape ignored, and six insider sales between 2026-08-07 and 2026-08-17 with no purchases. The fundamental line is still accelerating on the 2026-08-05 disclosures; the flow around it is not.
• Crowding observables, stated as observables: coverage clustering in retail-sentiment channels through mid-August; a widening published-target dispersion; continuous 10b5-1-cadence insider supply;

Catalyst Calendar (next 30 days)

• 2026-08-23 to 2026-09-22 — no company-scheduled investor event. SiTime has not published a date for its Q3 report or an investor day inside this window. Price action in the period reflects sector flow, index effects and third-party read-through rather than company disclosure.
• ~early September 2026 (est.) — AI-networking, switch and optical-module supplier prints. The only near-dated read on the 1.6T optical and switch demand that sits behind the CED segment. A guide-down from any of them would land on SiTime with no company data to offset it.
• ~2026-11-04 (est.) — Q3 2026 print. Outside this window, but it is the event that grades the $285–295M / $3.50–$3.65 / ~68% gross margin guide and the first quarter fully consolidating the Renesas timing book.

Elapsed catalysts

• Rolling, 2026-08-23 onward — Form 4 and Form 144 filings. The August cadence (six sales in nine sessions, 500–1,500-share blocks) is the highest-frequency observable available before November. (passed 3d ago)

What Would Change Our Mind

The shelf recovered in the 2026-08-06 gap is the whole structural argument for the post-print leg. Losing it says the market has stopped paying for a guide that was 60%+ above consensus, which would be a statement about the multiple rather than about the quarter. Concretely: a weekly close below $560 re-loses that shelf and returns price to the July base of $520.02–$571.21, and the saturated read hardens into a broken one.

On the fundamental side, three dated outcomes would break the frame independently of price: Q3 revenue printing below the $285M guide floor, gross margin landing under the ~68% target once purchase accounting on the acquired book flows through, or a CED line that declines sequentially off $101.2M with acquired revenue stripped out. Any of those at the ~2026-11-04 print reframes the AI-interconnect content story as a one-quarter acquisition step.

What would flip the life-cycle read back toward maturing or accelerating: a weekly close reclaiming the $745–$750 area last transacted on 2026-08-17, on expanding volume, together with the Form 4 flow going quiet for a full month. Conversely, if the early-September networking prints pass without generating a bid in the name, the catalyst window closes empty and there is nothing dated until November.

Correlation Notes

• SiTime moves with the AI-interconnect and analog complex rather than independently. Alphastreet reported a same-session cluster — MACOM -6.9%, Semtech -7.4%, Lattice -4.9% — alongside a 7.7% SiTime decline, framing the mid-August drawdown as sector-wide; the exact session date for that cluster is not confirmed here.
• The end-market driver is 1.6T optical modules and next-generation switching. Prints and guidance from switch, optical-module and custom-silicon suppliers are the highest-signal external read on the CED line between now and November.

• The 2x leveraged single-stock ETFs launched 2026-08-13 mechanically rebalance daily, which adds directional flow at the close on large-range days and should be expected to widen realised ranges relative to the pre-August history.