Buying Puts: Complete Strategy Guide

Master the art of buying put options for profit and protection. Calculate potential returns, understand risk, and learn when this strategy works best.

MT
Written by Michael Torres, CFA
Senior Financial Analyst
JW
Fact-checked by Dr. James Wilson, PhD
Options Strategy Researcher
Options BasicsFact-Checked

Input Values

$

Current price of the stock.

$

Strike price of the put option.

$

Premium per share.

Each contract = 100 shares.

$

Where you expect the stock to be at expiration.

Results

Total Put Cost$0.00
Profit / Loss
$0.00
Return on Investment
0.00%
Breakeven Price$0.00
Maximum Profit$9,500.00
Results update automatically as you change input values.

What Does Buying Puts Mean?

Buying puts is an options trading strategy where you purchase put option contracts to profit from a decline in the price of the underlying stock. When you buy a put, you pay a premium for the right to sell 100 shares per contract at the strike price before expiration. If the stock falls significantly below the strike, the put increases in value and can be sold for a profit or exercised to sell shares at the higher strike price.

Buying puts is one of the most straightforward bearish strategies available. Unlike short selling, which exposes you to unlimited risk, buying a put limits your maximum loss to the premium paid. This defined-risk characteristic makes puts an attractive alternative to short selling for traders who believe a stock will decline.

i
Two Reasons to Buy Puts

1) Speculation: You believe a stock will drop and want leveraged, defined-risk exposure to the downside. 2) Protection: You own shares and want insurance against a potential decline (this is called a protective put or married put).

How Buying Puts Works

Executing a Long Put Trade

1
Identify a Bearish Setup
Find a stock you believe will decline based on fundamental analysis (overvaluation, declining earnings) or technical analysis (broken support, bearish patterns, high RSI).
2
Choose the Right Strike Price
ATM puts are more expensive but have a higher probability of profit. OTM puts are cheaper but require a larger stock decline to become profitable. A common approach is to buy slightly OTM puts (5-10% below current price).
3
Select an Expiration Date
Give yourself enough time. Options with 30-60 days to expiration offer a good balance between cost and time for the move to occur. Avoid weeklies unless you have a specific near-term catalyst.
4
Buy to Open the Put
Place a limit order to buy the put contract. Use the midpoint between bid and ask as your starting limit price. Your total cost is the premium × 100 × number of contracts.
5
Manage the Position
Set a profit target (50-100% gain) and a stop loss (50% of premium). If the stock drops as expected, you can sell the put to close or exercise it. Most traders sell rather than exercise to capture remaining time value.

Put Buying Profit and Loss Calculations

Long Put Profit/Loss
P/L = [max(Strike - Stock Price, 0) - Premium] × 100 × Contracts
Where:
Strike = Put option strike price
Stock Price = Stock price at exit or expiration
Premium = Premium paid per share
Contracts = Number of contracts
Breakeven for Put Buyer
Breakeven = Strike Price - Premium Paid
Where:
Strike Price = Put option strike price
Premium Paid = Premium paid per share

Real-World Put Buying Example

Buying Puts Before Earnings Miss
Given
Stock
ABC Corp at $100
Put Strike
$95
Premium
$2.00 per share
Contracts
2
Stock After Earnings
$82
Calculation Steps
  1. 1Total cost = $2.00 × 100 × 2 = $400
  2. 2Breakeven = $95 - $2 = $93
  3. 3Intrinsic value at $82 = $95 - $82 = $13 per share
  4. 4Total value = $13 × 100 × 2 = $2,600
  5. 5Net profit = $2,600 - $400 = $2,200
  6. 6ROI = $2,200 / $400 = 550%
Result
An $18 stock decline generated a $2,200 profit (550% return) on a $400 investment. Compare this to short selling 200 shares: profit would be $3,600 but required $10,000+ in margin with unlimited risk.

When to Buy Puts

  • You have strong conviction a stock will decline (technical breakdown, deteriorating fundamentals, sector rotation)
  • You want downside exposure with defined risk (unlike short selling)
  • You own shares and want insurance before an uncertain event like earnings or an economic report
  • You believe the broader market will correct and want portfolio protection
  • A stock has had an unsustainable rally and you expect a reversion to the mean
  • You want to hedge a concentrated long position without selling shares

Buying Puts vs Short Selling

Long Put vs Short Sale Comparison
FactorBuying PutsShort Selling
Maximum LossPremium paid (defined)Unlimited (stock can rise infinitely)
Capital Required$200-$500 per contract typical50% margin + maintenance margin
Margin Call RiskNoneYes, can force you to close at worst time
Dividend RiskNoneMust pay dividends to lender
Time LimitOption expiration dateNo fixed expiration
Borrow AvailabilityNot neededMust find shares to borrow (hard to borrow fees)
LeverageHigh2:1 (margin)

The Protective Put Strategy

A protective put (also called a married put) involves buying puts on a stock you already own. This acts as insurance: if the stock drops, the put gain offsets the stock loss. If the stock rises, you participate in the upside minus the premium paid. This strategy is ideal before earnings, geopolitical events, or any time you want to keep your shares but limit downside risk for a set period.

!
Common Put Buying Mistake

Do not buy cheap, far out-of-the-money puts just because they are inexpensive. These puts require massive stock declines to be profitable and expire worthless the vast majority of the time. Slightly OTM or ATM puts have a much higher probability of success.

Frequently Asked Questions

Buying puts can be an excellent strategy when you have conviction that a stock will decline or when you want to protect an existing position. The defined-risk nature (you can only lose the premium) makes it safer than short selling. However, puts lose value over time (theta decay), so timing is important. They work best when you have a specific catalyst or timeframe in mind.

Sources & References

  • U.S. Securities and Exchange Commission (SEC) - Investor Education
  • Options Clearing Corporation (OCC) - Options Education
  • Chicago Board Options Exchange (CBOE) - Options Strategies
  • Hull, J.C. "Options, Futures, and Other Derivatives" (11th Edition, 2021)

Embed This Calculator on Your Website

Free to use with attribution

Copy the code below to add this calculator to your website, blog, or article. A link back to CoveredCallCalculator.net is included automatically.

<iframe src="https://coveredcallcalculator.net/embed/buying-puts" width="100%" height="500" frameborder="0" title="Buying Puts: Complete Strategy Guide" style="border:1px solid #e2e8f0;border-radius:12px;max-width:600px;"></iframe>
<p style="font-size:12px;color:#64748b;margin-top:8px;">Calculator by <a href="https://coveredcallcalculator.net" target="_blank" rel="noopener">CoveredCallCalculator.net</a></p>