How do I calculate the break-even on a protective put?

The break-even price on a protective put is the price your stock must reach on the upside to cover the cost of the put premium. Formula: Break-Even = Stock Purchase Price + Put Premium Per Share. If you bought a stock at $50 and paid $2 per share for a put, you need the stock to rise to $52 just to break even.

What is the maximum loss on a protective put strategy?

The maximum loss on a protective put is limited. It equals: (Stock Price − Strike Price) + Premium Paid. For example, if you bought a stock at $50, hold a put with a $45 strike, and paid $2 premium, your max loss is $7 per share ($5 gap + $2 premium) no matter how far the stock falls.

What is hedge ratio and how does it affect cost?

Hedge ratio is what percentage of your position you are protecting with put options. A 100% hedge ratio means you buy enough puts to fully cover every share you own. A 50% ratio means you only protect half your position at half the cost. Partial hedging reduces your premium cost but leaves some downside exposure.

What is the difference between a put hedge and a stop-loss?

A put hedge uses options to lock in a minimum sale price regardless of market gaps or volatility. A stop-loss order sells your stock when the price reaches a trigger level, but it can execute at a worse price during fast market moves. A put hedge costs money upfront but gives guaranteed price protection. A stop-loss is free but offers no such guarantee.

Put Option Hedge Calculator – Protective Put Cost, Break-Even Price & Downside Protection Value

Put Option Hedge Calculator

Enter your stock position, put strike price, premium paid, and hedge ratio to instantly see total hedge cost, break-even price, maximum protection value, and net profit or loss — free option hedging calculator.

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100% free

Standard options formula

Enter Your Position Details

Current Stock Price ($)

Price per share right now

Shares Owned

Total shares in your position

Put Strike Price ($)

Price at which your put kicks in

Put Premium Per Share ($)

Cost of one put option per share

Hedge Ratio (%)

Currency Symbol

Hedge Results

Enter your position details and click Calculate Hedge to see your protection cost, break-even, and scenario analysis.

Total Hedge Cost

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for your protected position

Position Summary

Shares Hedged —

Contracts Needed —

Break-Even Price —

Max Protection Value —

Hedge Cost as % of Position —

Annualized Hedge Cost —

Net P&L at Target Price —

Unrealized Gain / Loss —

Hedged vs. Unhedged P&L

Hedge Cost Breakdown

How a Put Hedge Works

When you own shares, a falling stock price hurts your portfolio. A put option gives you the right to sell shares at the strike price — even if the market price is lower. You pay a premium for this right, and that cost is your hedge price.

If the stock stays above the strike price, the put expires worthless and you lose only the premium. If the stock falls below the strike, the put gains value and limits your loss. Think of it as buying a price floor.

Scenario	What Happens
Stock rises	Put expires. You keep full gains minus the premium paid.
Stock stays flat	Put expires. Your only cost is the premium.
Stock falls slightly (above strike)	Put is out of the money. Loss = stock drop + premium.
Stock falls below strike	Put pays off. Loss is capped at (stock − strike) + premium.
Stock collapses	Full protection kicks in. Max loss is already fixed.

Key Formulas Explained

Total Hedge Cost = Put Premium × Shares Hedged

Break-Even Price = Stock Price + Premium Per Share
This is the price the stock must reach on the upside just to cover your hedge cost.

Maximum Loss (with hedge) = (Stock Price − Strike Price) + Premium Per Share × Shares Hedged
Your worst-case outcome, no matter how far the stock falls.

Hedge Cost % = Total Hedge Cost ÷ (Stock Price × Shares) × 100
Shows what percentage of your position value you are spending on protection.

Net P&L at Target Price = Position Change + Put Payoff − Premium Paid
Where Put Payoff = Max(Strike − Target, 0) × Shares Hedged.

Hedge Ratio — What to Choose

The hedge ratio controls what percentage of your shares are protected. A 100% hedge gives full peace of mind but costs the most. A partial hedge is cheaper but leaves some risk open.

100% hedge — Best when you are very worried about a drop but want to keep holding the stock.
50–75% hedge — A middle ground. Cheaper, still gives meaningful protection.
25% or less — Mainly symbolic. Reduces the sting of a mild drop but not major crashes.

Most retail investors use a 50–75% hedge ratio to balance premium cost against the downside they are willing to absorb.

When to Use a Put Hedge

You own a large stock position and expect short-term volatility.
An earnings report or news event is coming and the outcome is uncertain.
You want to hold a stock long term but need to sleep at night during a rough market.
You have a big unrealized gain and want to protect it before year-end.
Your position is too large to sell quickly without moving the market.

Put hedges are most cost-effective when implied volatility is low — the cheaper the premium, the more protection per dollar spent.

Common Questions About Put Option Hedging

A put option hedge is a strategy where you buy put options on a stock you already own. If the stock price falls, the put option gains value and offsets some or all of your loss. The cost of buying puts is the price you pay for that protection, called the premium. It works like insurance — you pay a small amount now to limit big losses later.

The break-even price on a protective put is the price your stock must reach on the upside to cover the cost of the put premium. Formula: Break-Even = Stock Price + Premium Per Share. If your stock is at $50 and you paid $2 per share for a put, you need the stock to rise to $52 to break even including the cost of the hedge.

The maximum loss on a protective put is fixed and limited. Formula: Max Loss = (Stock Price − Strike Price + Premium) × Shares Hedged. For example, at a $50 stock with a $45 strike put and a $2 premium, your worst possible loss is $7 per share — regardless of how far the stock drops.

Hedge ratio is the percentage of your stock position that you cover with put options. A 100% hedge ratio protects every share you own. A 50% ratio protects half your shares at half the cost but leaves the other half exposed. Choosing the right ratio depends on how much protection you want versus how much premium cost you can accept.

A put hedge uses options to lock in a minimum exit price — your protection is guaranteed by the contract regardless of gaps or fast markets. A stop-loss order sells your shares when they hit a trigger price, but it can execute at a worse price during a sudden drop. A put costs money but gives a guaranteed floor. A stop-loss is free but provides no such certainty.

Maximum Loss Per Share — Strike Price vs. Stock Price (1.5× premium)

Assumes premium = 1.5% of stock price. Shows the capped maximum loss per share including premium cost.

Stock Price	Strike –2%	Strike –5%	Strike –8%	Strike –10%	Strike –15%	Strike –20%

Max Loss = (Stock − Strike) + Premium. Currency shown as $. Premium assumed at 1.5% of stock price for illustration.

Total Hedge Cost — Premium vs. Position Size (100% hedge)

Total premium cost for a full hedge at different per-share premiums and position sizes.

Premium / Share	100 shares	200 shares	500 shares	1,000 shares	2,500 shares	5,000 shares

Total Cost = Premium × Shares. Useful for sizing your hedge budget before entering the position.

Hedge Cost as a Percentage of Position Value

How much of your position value you spend on protection, by stock price and premium.

Stock Price	Prem $1	Prem $2	Prem $3	Prem $5	Prem $8	Prem $10

Cost % = Premium ÷ Stock Price × 100. A rule of thumb: hedge cost below 3% per quarter is generally considered reasonable.

Break-Even Prices at Different Stock and Premium Levels

The stock price you need to hit on the upside to recover the full cost of your hedge.

Stock Price	Prem $1	Prem $2	Prem $3	Prem $5	Prem $8	Prem $10

Break-Even = Stock Price + Premium Per Share. For the stock to net zero after hedging, it must rise by at least the premium amount.

Major Options Markets by Region

Key exchanges, contract sizes, and settlement rules for equity options around the world.

Region / Exchange	Contract Size	Settlement	Exercise Style	Currency	Notes
🇺🇸 CBOE (US)	100 shares	Physical	American	USD	Largest equity options market globally
🇬🇧 ICE (UK)	1,000 shares	Physical	American	GBP	FTSE 100 and individual equity options
🇩🇪 Eurex (Germany)	100 shares	Physical	European / American	EUR	Largest European derivatives exchange
🇯🇵 OSE (Japan)	100 shares	Cash	European	JPY	Nikkei 225 and TOPIX options common
🇦🇺 ASX (Australia)	100 shares	Physical	American	AUD	ASX equity options market
🇭🇰 HKEX (HK)	200–2000 shares*	Physical	American	HKD	Lot size varies by underlying
🇮🇳 NSE (India)	Lot size varies	Cash	European	INR	Index options most liquid
🇧🇷 B3 (Brazil)	100 shares	Physical	American	BRL	Largest in Latin America
🇨🇦 MX (Canada)	100 shares	Physical	American	CAD	Montreal Exchange equity options
🇿🇦 JSE (S. Africa)	100 shares	Physical	American	ZAR	Equity and index options available

* Lot sizes can vary by stock and may change. Always verify with your broker before trading. This table is for reference only.

Partial Hedge Scenarios — Cost vs. Protection at Different Ratios

1,000 shares at $100/share, $90 strike, $3 premium. Shows how partial hedging affects total cost and max loss.

Hedge Ratio	Shares Hedged	Total Premium Cost	Max Loss (hedged portion)	Unhedged Shares	Savings vs. Full Hedge

Max loss on hedged shares = (100 − 90 + 3) × hedged shares = $13/share. Unhedged shares have unlimited downside.