Merger Arbitrage: The Simple Bet Behind Every Buyout

On July 15, payments company Stripe and private equity firm Advent offered $53 billion to buy PayPal — $60.50 a share, a 28% premium over the previous closing price. PayPal’s stock jumped on the news. But here’s the interesting part: it didn’t jump all the way to $60.50. It stopped short.

Think of it like a house listed for $600,000, and a buyer shows up with a written offer for exactly that. Does the house’s “value” instantly become $600,000? Not quite — not until the sale actually closes. Maybe the buyer’s financing falls through. Maybe another buyer shows up. Maybe something blocks the deal that nobody expected. So the price everyone quotes usually sits a little below the offer, and that small gap tells you how sure people are the sale will really happen.

That’s exactly what’s happening with PayPal. Stripe offered $60.50 a share, and PayPal’s stock jumped toward that number — but stayed a bit below it. Some investors buy stocks in exactly this situation on purpose. It’s called merger arbitrage: if the deal goes through as announced, the stock eventually rises to meet the offer price, and whoever bought the gap pockets the difference. If the deal falls apart — blocked by regulators, rejected by the board, or simply abandoned — the stock can fall back down, and the gap-buyer loses instead.

So the size of that gap isn’t random noise. It’s basically the market’s best guess, in dollar terms, of how likely the deal is to actually happen. A tiny gap means “this is basically done.” A wide gap means “plenty could still go wrong” — and with a private company buying a public one, $53 billion on the line, and PayPal’s board not yet responding, there’s still plenty of room for surprises here.

My take: That little gap between the stock price and the offer price is the market’s way of saying “maybe.”

Not advice. Just how I see it.

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