Multiple arbitrage

Definition

The gain a roll-up captures by buying small businesses at a low earnings multiple and combining them into a larger enterprise the market values at a higher multiple.

Why It Matters

This is the core financial engine of a buy-and-build strategy, and it rewards size independent of any operating improvement. A buyer who acquires several small shops at three times earnings and later sells the combined company at six times has doubled the value of those earnings on the spread alone, which is why platform scale becomes a goal in itself.

In numbers: Acquiring shops with $2M of combined earnings at 3× costs $6M; selling the merged company at 6× yields $12M, a $6M gain from the multiple spread alone.