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Put Ratio Spread

Spreads3 legscreditbullish to neutral

Buy one put and sell two lower ones. An unbalanced structure that pays in a range and leaves a naked short beneath it — advanced, and the most easily misjudged position in this chapter.

The Strategy Builder does not construct this one — the reference shelf is broader than the picker. You can still build it by hand: add the legs below in the builder's leg table.

What it is

Buy one option and sell more than one further out. The extra short leg funds the long one, often producing a net credit, and leaves part of the position unhedged.

On the example the long $50 put is fully covered by one of the two short $45 puts. The second short put has nothing behind it — that is the naked component.

Ratio structures exist to be paid while holding a directional view. The payment comes from the uncovered leg, which is exactly where the risk lives.

How it is built

Priced off the guide's shared chain, on a $50 stock. Every figure beneath the diagram is computed from these legs by the same engine the Strategy Builder uses.

ActionWhatStrikeQtyPrice
Buyput$501$2.60
Sellput$452$1.50
$0$45$50now $50$39.60stock price at expiryprofit / loss
Max profit
$540
Max loss
−$3,960
Break-even
$39.60
Net credit
$40

Collateral held: $4,000 — the gross amount tied up, before the premium received.

One $50 put bought for $2.60 against two $45 puts sold for $1.50 each — a $0.40 net credit. Note the left tail: it does not go flat. The extra short put is uncovered, so below $45 the position loses at the rate of one naked put, indefinitely. The peak sits at the short strike.

Reading the shape

Roughly flat at a small credit above the long strike.

Rising to a peak at the short strike, where the long put is at its most valuable relative to the shorts.

Then falling, and continuing to fall — the tail does not flatten, because one short put is uncovered.

How it is used

It suits a view that a stock drifts down to a level and stops. The peak is placed at that level.

The uncovered short means capital is set by margin rules rather than by a spread width, and the position can require more collateral than the credit suggests.

A broken-wing butterfly is the related idea with the tail closed — one more long option converts the open-ended risk into a defined one.

Count the contracts on each side before anything else. Any excess short leg is naked, and that leg — not the diagram's peak — determines how the position should be sized.
The left tail is the whole story and it is easy to miss on a chart scaled to the profitable region. A structure that shows a net credit and a pleasant hump still contains a naked short put.
Unbalanced quantities mean assignment can arrive on part of the position, leaving a different structure than the one entered.

Like everything in this guide, these are descriptions of structures and conditions — context for your own decisions, not instructions to trade.