onsemi (ON) is extending last week's rally into Monday's premarket session, and the reason traces back to a merger deal that got rewritten in four days.
What did onsemi just change about its Synaptics acquisition?
On October 1, onsemi amended its agreement to acquire Synaptics (SYNA), swapping the original all-stock structure for an all-cash offer of $123.00 per share, worth about $5.7 billion in aggregate. The prior deal, signed June 25, would have converted each Synaptics share into 1.350 shares of onsemi stock and was valued near $7 billion at signing.
Why did onsemi switch from stock to cash?
The amendment followed an unsolicited competing proposal from a third party that onsemi has not named publicly. Rather than risk losing the target to a rival bidder, onsemi moved to remove the stock-conversion variable entirely and offer Synaptics holders a fixed cash number instead.
How is onsemi paying for the $5.7 billion deal?
Financing comes from cash on hand plus a committed senior secured term loan of up to $2.45 billion led by Morgan Stanley. onsemi says the deal is expected to be immediately accretive to its non-GAAP earnings per share once it closes, and frames the switch as trading Synaptics holders' exposure to onsemi's own stock price for a fixed cash outcome instead.
What does the arbitrage spread say about deal risk?
Synaptics shares trade near $121 this week, about 1.6% under the $123 cash offer. Synaptics' own standalone analyst target median sits at $129, above the deal price, meaning some analysts still see more standalone value in the company than onsemi is paying. The spread itself is narrow for a deal with shareholder and regulatory approval still pending and a mid-2027 close date. A gap this tight over that long a wait usually signals the market expects the deal to close as written, though the rival bidder that forced this revision in the first place is still unnamed.
What happens next in the Synaptics deal?
Both companies still need shareholder votes and antitrust clearance before the deal can close, which onsemi has guided for mid-2027. The next event risk for anyone still holding Synaptics stock rather than locking in the spread through merger arbitrage is either a disclosure naming the rival suitor or another revision to the $123 offer.
What else is moving in premarket trading today?
Chip names led Monday's broader premarket gainers. onsemi itself was up 5.96% in premarket trading today, extending the roughly 7% premarket jump from when the revised terms were first announced. The next scheduled catalyst for the wider tape is the ISM Services PMI at 10:00 AM ET, with consensus looking for a reading near 55.7 versus August's 55.4.
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