ON · ON Semiconductor Corporation

The thesis

onsemi's AI data-center power business is the growth case for the shares, and the third-quarter 2026 report on 2 November 2026 settles whether revenue lands inside the $1.650 billion to $1.750 billion guidance range. The shares closed at $78.67 on 27 October 2026 (split- and dividend-adjusted daily closes), up from $73.36 on 14 October 2026 and still 41.3% below the 52-week high of $133.93.

The company confirmed on 15 October 2026 that it will report after the market closes on 2 November 2026, with a conference call at 5 p.m. Eastern Time. That replaces the estimated date in the previous note. The three-month price change is negative 6.1%, and the 14-day relative strength index (a momentum gauge) is 43.3.

The narrative is maturing: the all-cash Synaptics terms and Cirrus Logic's withdrawal of 13 October 2026 are settled, and the shares have recovered above the $74.38 close of 4 September 2026 but remain below the $80.08 close of the 1 October 2026 amendment. Analyst moves since 15 October 2026 are split, and the report is now the only near-term event that can change the reading.

Bullish and bearish views on ON Semiconductor Corporation

The bull case on ON Semiconductor Corporation (ON), in brief: Guidance sets a low bar to clear. The bear case: Target cuts are arriving before the report.

Bull case

• Guidance sets a low bar to clear. Second-quarter 2026 revenue was $1,604 million, up 9% year over year, with free cash flow of $425.4 million (onsemi results release, 3 August 2026). Third-quarter guidance is $1.650 billion to $1.750 billion.
• The AI forecast is explicit. At the 16 September 2026 Investor Day, management forecast AI data-center revenue to more than double in 2026, more than double again in 2027 and exceed $2.5 billion a year by 2030. The report is the first quarterly check on that path.
• The deal overhang is removed. The 1 October 2026 amendment pays $123 per Synaptics share in cash, about $5.7 billion, against about $7 billion under the original all-stock terms. Cirrus Logic's 8-K of 13 October 2026 states it is not currently pursuing a transaction with Synaptics.
• Several brokers still rate the shares Buy. StoneX initiated at Buy with a $110 target on 15 October 2026. Susquehanna kept a positive view with a $120 target on 21 October 2026, and B. Riley kept Buy with a $105 target on 22 October 2026. Needham's Buy carries a $116 target and Wells Fargo's Overweight a $100 target, both from 2 October 2026.
• Product wins continue. onsemi announced on 14 October 2026 that Sungrow is deploying its EliteSiC silicon carbide hybrid power module.

Bear case

• Target cuts are arriving before the report. TD Cowen cut its target to $75 from $95 on 19 October 2026. Susquehanna lowered its target to $120 on 21 October 2026 and B. Riley lowered its to $105 on 22 October 2026, both keeping positive ratings.
• Hold-rated brokers sit near the share price. Stifel kept Hold and raised its target to $80 on 5 October 2026. TD Cowen's $75 target is below the 27 October 2026 close of $78.67.
• Debt now funds the Synaptics purchase. Cash and committed Morgan Stanley debt replace share issuance (Investing.com, 1 October 2026). The accretion claim is management's, and interest cost is not yet visible in reported results.
• The deal dilutes the AI-power story. Roughly 60% of Synaptics revenue is consumer and wireless, per the 21 August 2026 S-4 as read in the previous note. Close is targeted for mid-2027, pending a Synaptics shareholder vote and non-US approvals. A law firm announced an investigation of the deal on 23 October 2026.
• The rebound is short. The close of $78.67 on 27 October 2026 is still under the $80.08 close of 1 October 2026 and the shares sit well below the 52-week high, so the recovery has not been tested by earnings.

Price setup

The close of $78.67 on 27 October 2026 is 41.3% below the 52-week high of $133.93 set earlier in the year. The shares recovered from $73.36 on 14 October 2026. The $66.60 close of 16 September 2026, the Investor Day, is the low of the recent decline and the level that ends the case.

Crowding evidence is limited to the near report date and a wide target spread, from TD Cowen's $75 to Susquehanna's $120. Moving-average and insider-transaction data were not checked for this note.

Catalysts, next 30 days

• TBD 2026: Synaptics special shareholder meeting on the amended all-cash merger. The vote is a condition to close.
• TBD: non-US regulatory approvals for the deal, which set the pace toward the mid-2027 target close.

Elapsed catalysts

• 2 November 2026, after the close: third-quarter 2026 results, with the call at 5 p.m. Eastern Time. The report tests the $1.650 billion revenue floor and AI data-center growth. (passed 4d ago)

What would change the view

Third-quarter revenue below the $1.650 billion guidance floor, or management lowering or withdrawing the 16 September 2026 expectation that AI data-center revenue more than doubles in 2027, would break the case. A failed Synaptics vote or debt terms that undercut the immediate-accretion claim would also weaken it.

On price, a daily close below $66.60, the 16 September 2026 Investor Day close, would end the case. A revenue print inside the guidance range with AI growth on plan would keep it intact.

What it trades with

The shares trade with the semiconductor sector. The 5 June 2026 session fell 11.05% to $117.26 inside the worst day for the Philadelphia Semiconductor Index (SOX) since March 2020, on a soft Broadcom AI guide and a weak jobs report. The legacy business is roughly half automotive, so car and industrial demand moves the blended numbers. Synaptics is the acquisition target, and deal news moves both stocks.