ON Semiconductor Corporation (ON) just made the biggest bet in its corporate history.
On Thursday, June 25, the Scottsdale-based chipmaker announced a $7 billion all-stock agreement to acquire Synaptics Incorporated (SYNA).
This is the company’s biggest transaction to date.
CEO Hassane El-Khoury described the deal as a move into “physical AI,” which represents AI embedded into machines, allowing them to closely imitate human patterns and decision-making abilities.
This initiative focuses on developing smart machines for immediate, actionable intelligence.
By the close on Friday, June 26, ON Semiconductor Corporation (Onsemi) shares had fallen roughly 21%, the stock’s worst single-day loss since 2020.
Synaptics shares, however, gained about 3%.
The sell-off raised immediate questions. What is Onsemi getting for $7 billion? Why are investors spooked? And how long before this deal delivers?
Here is what the data and analysts say.
What Onsemi’s $7 billion Synaptics deal actually involves
Synaptics shareholders receive 1.350 shares of Onsemi common stock per share held, representing a 19% premium over recent average prices.
This premium is based on the average stock prices of both companies over the past 10 days.
The total enterprise value is approximately $7 billion, according to an Onsemi news release, and it’s the largest acquisition in Onsemi’s history.
Synaptics investors are expected to own about 12% of the combined company on a fully diluted basis after closing, Yahoo Finance reported.
This dilutes the ownership stake and voting power of existing Onsemi shareholders before a single synergy materializes.
Onsemi projects approximately $200 million in annual cost savings from the combined business.
The deal is expected to close by mid-2027 and will start increasing Onsemi’s profits per share within 18 months after that.
How Synaptics fills the missing layers in Onsemi’s AI stack
Onsemi has built its business on power semiconductors and intelligent sensing hardware. Its chips go into electric vehicles, industrial equipment, and AI data center power systems.
El-Khoury told CNBC that the company’s existing foundation remains intact, and there is no overlap in the product.
The real debate is whether physical AI justifies the dilution cost.
More Semiconductor Stocks:
- Roundhill CEO spots major shift for Micron stock
- TSMC executive drops blunt message on AI chip’s next frontier
- Bank of America strongly resets Micron stock price target
Real-time machine intelligence requires more than power and sensing. It also needs the computing strength and wireless tech to process data directly on the device, rather than sending it to a faraway server.
Synaptics’ Astra Edge AI platform bundles AI processors, neural processing units, Wi-Fi, Bluetooth, and GPS into one connected system.
According to GlobeNewswire, the acquisition of Synaptics helps onsemi grow its AI market from data centers to edge devices through four key areas, including power, sensing, connected computing, and control.
The combined entity’s targeted total addressable market is expected to reach $243 billion by 2030, roughly $30 billion more than Onsemi’s current standalone position.
Why analysts are divided on the deal’s near-term outlook
Not every analyst sees the deal as a misstep, but the doubts are real.
Analysts at KeyBanc Capital Markets worry that Synaptics focuses too much on phones and consumer tech, unlike Onsemi, which specializes in cars and factory equipment.
Jefferies analysts called the transaction “strategically sound” because it diversifies Onsemi’s business and provides access to leading-edge physical AI technologies, Invezz reported.
However, even supportive analysts have one major concern: The deal will not boost earnings quickly.
Since a meaningful payoff is unlikely to arrive until 2028 or 2029, investors face a very wide waiting period before they can actually measure the results.
4 things investors need to know about the ON-Synaptics deal
- The transaction is entirely all-stock, meaning Onsemi issues new shares rather than paying cash or taking on new debt.
- Synaptics shareholders will own about 12% of the combined company. This means existing Onsemi investors will see their ownership diluted right away before any benefits actually show up.
- According to SEC filings, Onsemi wants to save roughly $200 million a year through this deal. It plans to reach this goal primarily by cutting internal costs. In fact, it expects 85% to 90% of those savings to come directly from reducing operational expenses.
- The deal is not likely to boost earnings quickly. A meaningful payoff may not arrive until 2028 or 2029. This timeline stretches well beyond the target closing date of mid-2027.
What still needs to happen before Onsemi shares can recover
Two major hurdles remain before the deal becomes official.
- Synaptics shareholders must vote to approve the deal, according to an SEC filing.
- Regulators across multiple jurisdictions must also review and clear the chip merger before it can close.
Closing is targeted for mid-2027. Once closed, Onsemi must deliver on its $200 million synergy plan while simultaneously growing physical AI revenue in markets that are still maturing.
The strategy depends on robotics, autonomous vehicles, and industrial AI scaling faster than broader semiconductor demand.
According to Nasdaq, El-Khoury said the company is building “systems that can sense, decide, act, and adapt in real time.”
Investors have heard the vision. The 21% selloff makes it clear they are waiting for evidence.
Related: Cathie Wood buys $67 million of surging semiconductor stock
