Shares of onsemi surged 6.1% to $85.00 after the chipmaker rewrote the terms of its blockbuster Synaptics acquisition, swapping a dilutive stock deal for a leaner, all-cash offer that Wall Street immediately rewarded. The question now is whether the company can absorb billions in new debt without stumbling.
• A Rival Bidder Showed Up — and the Price Went Down
The amendment follows an unsolicited competing proposal received from a third party. In a counterintuitive move, the revised agreement changes the transaction to an all-cash deal at $123 per share, valuing it at roughly $5.7 billion — down from approximately $7 billion under the original all-stock agreement.
The original June deal called for a fixed exchange ratio of 1.350 onsemi shares for each Synaptics share — meaning onsemi shareholders faced ownership dilution of about 12%. By killing the stock component, onsemi eliminated that dilution entirely, which is why the stock popped even as the headline price fell.
• Immediate Earnings Boost Replaces an 18-Month Wait
The transaction is expected to be immediately accretive to onsemi's non-GAAP earnings per share. That is a dramatic improvement over the original deal structure, which expected non-GAAP EPS accretion 18 months after close. For shareholders, "accretive" simply means the deal should add to earnings per share rather than subtract — from day one this time, not a year and a half out.
• $2.45 Billion in New Debt Is the Trade-Off
Onsemi entered into a commitment letter with Morgan Stanley, which has agreed to provide up to $2.45 billion in senior secured term loan financing. The rest comes from cash on hand. Taking on debt mid-cycle is a bet that power and analog chip demand — especially from electric vehicles, industrial automation, and AI data centers — keeps growing fast enough to service it.
• Regulatory Hurdles Are Largely Cleared, but the Clock Still Runs
The transaction has been approved by the United States Federal Trade Commission, and regulators in other jurisdictions are reviewing the transaction.
Closing is still expected by mid-2027, subject to Synaptics shareholder approval and other customary conditions.
Onsemi has identified opportunities beyond the previously announced $200 million of annual run-rate synergies , including bringing Synaptics chip production in-house — the kind of cost savings that could help offset the debt load if execution is clean.