Ratio Strategy

A ratio strategy is an options position built with an unequal number of contracts on each side of the trade, rather than matching them one-for-one. Instead of buying one option and selling one option (a balanced spread), a trader might buy one option and sell two or three others, creating an imbalance in how many contracts are long versus short.

The word "ratio" refers to that mismatch. For example, a 1x2 ratio spread means one option bought for every two sold. Because there are more short options than long ones, the position usually involves selling more contracts than it buys, which brings in more premium upfront but also leaves part of the position uncovered, meaning some of the short options are not offset by a matching long option or enough shares of the underlying stock.

The nuance that trips people up is risk. A balanced spread (equal longs and shorts) usually has a capped, known maximum loss. A ratio strategy, because of the extra uncovered short options, can expose the trader to potentially large or even open-ended losses if the underlying stock moves sharply in the wrong direction, since those extra short contracts aren't protected by an offsetting long position. The premium collected is compensation for taking on that added, unhedged risk.

Ratio strategies come in many forms (ratio spreads, ratio backspreads, ratio writes against stock), but they all share this core feature: the count of contracts on the long side does not equal the count on the short side, and that imbalance is the whole point of the trade.