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Research & education only — not financial advice.TENK is not a registered investment adviser; calls are impersonal, generated from SEC filings and a delayed/third-party price feed, and may be wrong or out of date. The operator and an affiliated trading operation may hold or trade the securities TENK rates — see Disclosures. Do your own research.

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TTENK/calls
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Home›Options calculator›Long put

Long put calculator

bearish

Buying a put gives the right to sell 100 shares at the strike until expiry. It profits as the stock falls below the breakeven (strike − premium); risk is capped at the premium.

Underlying (optional)
Market inputs

Premiums start as Black-Scholes model values — overwrite them with your broker’s real quotes for exact numbers.

Legs
1 contract = 100 shares
Net debit
$133
Max profit
$4,603
Max loss
−$133
Breakeven
93.67
Profit / loss at expiry
at expiry today (model)
48spot 100.00160
Delta
-24.8
shares-equivalent
Gamma
3.68
Δ per $1
Theta / day
−$4.23
time decay
Vega / 1%
$9.07
per vol point
P&L by price and date (Black-Scholes, IV 30%)
pricetoday+4d+8d+11d+15d+19d+23d+26dexpiry
130.0-133-133-133-133-133-133-133-133-133
125.0-133-133-133-133-133-133-133-133-133
120.0-132-133-133-133-133-133-133-133-133
115.0-129-131-132-132-133-133-133-133-133
110.0-119-123-127-129-132-133-133-133-133
105.0-85-96-106-113-121-128-132-133-133
100.00-18-36-50-70-92-113-127-133
95.0176156134116895820-16-133
90.0470455440428411394377368367
85.0872867863860858858860863867
80.01.3k1.3k1.3k1.3k1.4k1.4k1.4k1.4k1.4k
75.01.8k1.8k1.8k1.8k1.9k1.9k1.9k1.9k1.9k
70.02.3k2.3k2.3k2.3k2.4k2.4k2.4k2.4k2.4k

Dollar P&L for the whole position. Pre-expiry cells are model values (constant IV); real marks will differ with volatility and skew.

Other strategies

  • Long call
  • Covered call
  • Cash-secured put
  • Bull call spread
  • Bear put spread
  • Iron condor
  • Long straddle
  • Long strangle
  • Collar

Common questions

What is the maximum profit on a long put?
Strike minus premium, times 100 per contract — reached if the stock goes to zero.
What is the breakeven for a long put?
Strike price minus the premium paid per share.
Are long puts the same as shorting the stock?
No — a long put has defined risk (the premium) and expires, while a short stock position has unlimited risk and no expiry. Educational comparison, not advice.

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Educational model, not trade advice. Options involve substantial risk and are not suitable for every investor — read the OCC’s Characteristics and Risks of Standardized Options. Model values use Black-Scholes with your inputs (constant volatility, European exercise, no dividends) and will differ from live market prices.

Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.