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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adviser; calls are impersonal, generated from SEC filings and a delayed/third-party price feed, and may be wrong or out of date.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›Protective put

Protective put calculator

income

Hold 100 shares and buy a put against them as insurance. Upside stays uncapped like owning the stock, while losses below the put strike are stopped — the put premium is the cost of that floor.

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
$10,133
Max profit
Unlimited
Max loss
−$633
Breakeven
101.33
Profit / loss at expiry
at expiry today (model)
48spot 100.00160
Delta
75.2
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
130.02.9k2.9k2.9k2.9k2.9k2.9k2.9k2.9k2.9k
125.02.4k2.4k2.4k2.4k2.4k2.4k2.4k2.4k2.4k
120.01.9k1.9k1.9k1.9k1.9k1.9k1.9k1.9k1.9k
115.01.4k1.4k1.4k1.4k1.4k1.4k1.4k1.4k1.4k
110.0881877873871868867867867867
105.0415404394387379372368367367
100.00-18-36-50-70-92-113-127-133
95.0-324-344-366-384-411-442-480-516-633
90.0-530-545-560-572-589-606-623-632-633
85.0-628-633-637-640-642-642-640-637-633
80.0-659-658-655-653-649-645-641-637-633
75.0-666-662-657-654-650-645-641-637-633
70.0-666-662-658-654-650-645-641-637-633

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
  • Long put
  • Covered call
  • Cash-secured put
  • Bull call spread
  • Bear put spread
  • Iron condor
  • Long straddle
  • Long strangle
  • Collar
  • Bull put spread
  • Bear call spread
  • Butterfly spread (calls)
  • Iron butterfly
  • Short straddle
  • Short strangle
  • Call condor
  • Butterfly spread (puts)
  • Call ratio backspread
  • Put ratio backspread
  • Jade lizard

Common questions

What does a protective put protect against?
Any decline below the put strike: no matter how far the stock falls, the shares can be sold at the strike until expiry. The floor on the position is strike minus the premium paid.
What is the cost of a protective put?
The put premium, paid up front. It behaves like an insurance deductible — a recurring drag if renewed, in exchange for a defined worst case.
Protective put vs a stop-loss order?
A put guarantees an exit price and can't gap through overnight, but costs premium and expires; a stop order is free but can fill far below its trigger in a fast move. Educational comparison, not advice.

Research the underlying

An options position is a view on the company underneath. Our SEC-grounded verdicts, quality scores and filings coverage are free for every US-listed name.

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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.