Acquisition Premium
Investment Banking glossary · M&A & LBO Modeling Dynamics
Definition
Premium paid above the target's unaffected share price for control: Premium = (Offer Price - Unaffected Price)/(Unaffected Price). Typical range for U.S. public targets: 25-40%. Higher in competitive auctions, strategic deals with material synergies, and strong markets; lower in negotiated sales, sponsor (LBO) deals, and distressed situations. The premium economically funds (a) the present value of synergies the acquirer expects, plus (b) the control rights the target's shareholders are surrendering.
Acquisition Premium in plain English
When a company buys another public company, it almost never pays the current stock price — it pays extra, and that extra is the acquisition premium (typically about 25-40% above the price before the deal leaked). Why overpay? Because owning a whole company is worth more than owning a few shares: the buyer gains control to run things its way, and often expects the two firms combined to be more profitable together (called synergies). It's like paying above list price for the last house on a block you're trying to fully own — the control and the future upside are worth the bump. The 'unaffected price' just means the share price before rumors of the deal started pushing it up.
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