The bear put spread, and the part of the fall you sold
The answer
A bear put spread means buying a put at 1 strike and selling a put at a lower strike, same expiry. The sold put pays for part of the bought put. In exchange, your profit stops at the lower strike. It is a cheaper bet that the price falls, and it removes the single best feature a bearish option position has.
Why this costs you money
Markets do not fall the way they rise. Falls are faster, deeper and more sudden, and while they happen, implied volatility rises sharply. An outright put gains from both effects at once. It gains from direction and it gains again because every option becomes more expensive.
A bear put spread cancels the second effect almost entirely. You are long 1 put and short another, and their sensitivities to volatility largely offset. So on the day you are most right, your position gains far less than you expected.
Then the first effect gets capped too. The move you were waiting for arrives, the index falls 9%, and your spread was 3% wide. You captured a third of the event.
This is the specific way people lose with this structure. They are correct about the direction, correct about the timing, and paid a fraction of what an outright put would have paid, because they optimised for the cost of being wrong instead of the value of being right. Over many trades, that trade-off can still be correct. On the 1 trade a year that actually pays, it never feels correct.
The second way people lose is mechanical, and it is worse. They forget that a put they own, or a put they sold, can end in an obligation to deliver shares.
How it works
Two legs, same underlying, same expiry.
- Buy a put at a higher strike. This is the leg that profits from the fall.
- Sell a put at a lower strike. This is the leg that pays for it and caps you.
You pay the debit, which is the difference between the 2 premiums.
- Maximum loss = the debit. It occurs at or above the higher strike.
- Maximum profit = the width between the strikes, minus the debit. It occurs at or below the lower strike.
- Break-even = higher strike − debit.
One property is specific to put spreads and worth understanding.
Out-of-the-money puts carry higher implied volatility than out-of-the-money calls at the same distance. The further down you go, the higher it usually gets. This is the skew. It means the put you sell often carries a higher implied volatility than the put you buy, so you receive relatively more for it than a single-volatility model would suggest.
The practical result: a bear put spread is often cheaper, relative to its width, than an equivalent bull call spread. That is a genuine structural reason to prefer the spread over an outright put when betting on a fall. You are selling back the most inflated part of the chain.
What it costs, and what it gives up
It costs the debit, which is 100% at risk.
It gives up the tail, and the tail is the whole reason to be bearish with options. A fall of 5% and a fall of 30% pay you the same amount. Historically, large single-day falls are far more common than large single-day rises. You have capped the outcome that options are uniquely good at capturing.
It gives up the volatility payoff. In a real panic, the value of an outright put can multiply many times over, driven as much by the rise in implied volatility as by the fall in price. A spread receives almost none of that, because the short leg becomes expensive at the same time.
It gives up your ability to hold on. An outright put can be held through a sideways period and still pay if the fall comes later. A spread near expiry with the price between the strikes is a position with 2 different resolutions, and in some markets 1 of them is a delivery obligation.
Who is on the other side, and why they are willing to be there
Three answers, and the third is the one people never consider.
A market maker sells you the upper put and buys the lower put, quotes both off the same surface, hedges the residual, and earns the difference between its quotes and fair value. It has no opinion on the company.
A premium seller is on the other side of the whole structure. Your bear put spread is somebody else's bull put spread, and they are collecting a credit betting the price stays above your upper strike. They win most of the time, which is why credit spreads are so heavily promoted.
An investor who wants to own the stock lower. This is the answer that changes how you think. A great many put sellers are long-term buyers using a sold put as a paid limit order. They are perfectly content to be assigned, because being assigned means buying a company they wanted at a price they chose. Against that counterparty, "the stock falls to my lower strike" is not their loss. It is their plan.
The useful discipline: ask whether the person on the other side would be upset by the outcome you are hoping for. If the answer is no, the premium you are receiving on the short leg is not compensation for a risk they fear. It is a discount they are happy to give, and the number reflects that.
The maximum loss, as a number
Take an index near 24,000 with a lot size of 75. the current lot size. Buy the 24,000 put and sell the 23,500 put. The width is 500 points. Suppose the debit is 160 points.
- Capital committed = 160 × 75 = 12,000 rupees.
- Maximum loss = 12,000 rupees = 100% of the capital committed.
- Maximum profit = (500 − 160) × 75 = 25,500 rupees.
- Break-even = 23,840, or about 0.7% below the current level.
The overnight gap.
Downward. This is the outcome you wanted, and it is also where the cap bites hardest. A gap of 9% down pays you the same 25,500 rupees as a gap of 2.1% down. An outright put at the 24,000 strike would have paid roughly 7 times more on the larger gap, before considering the rise in implied volatility, which would have added more.
Upward. Total loss of the debit, and it can happen on the first morning.
Between the strikes at expiry. In India, this is where a single-stock bear put spread becomes serious. Your long put finishes in the money. Single-stock options are physically settled. Exercising a put means you must deliver the shares. If you do not own them, you have a short delivery, which goes to the exchange auction process with penalties attached. the current NSE auction and penalty rules.
In the United States, a long put exercised without shares leaves you short 100 shares of the company. If the shares are hard to borrow, the cost of that short position can be substantial, and your broker may buy you in without notice.
Close both legs before expiry week. As with every 2 leg strategy in this cluster, that single habit removes most of the ways it hurts people.
When it is genuinely reasonable to use
Four conditions.
- You have a downside target and the lower strike is at it. Support at a level, a valuation floor, a bid price in a takeover. If you cannot name the level, do not sell the lower put.
- Implied volatility is already high. After a market has fallen, puts are expensive. Buying an outright put then means paying for fear that has already arrived. The spread sells some of that back, and this is the strongest argument for the structure.
- You want a defined budget for a bearish view. Being bearish is expensive and usually wrong. A spread lets you be wrong repeatedly for a known amount, which is how professional short-side positions are actually sized.
- Both legs are liquid enough to close. The lower put is the thinner leg. Check it specifically.
When it is not reasonable: as a hedge against a portfolio. A capped hedge is a hedge that stops working in the scenario you bought it for. If the purpose is protection against a crash, the cap is placed exactly where the crash begins to matter.
The decision rule. If you are buying this for a view, cap it and set the lower strike at your target. If you are buying it for protection, do not cap it at all. Confusing those 2 purposes is the most common error with put spreads, and it only reveals itself on the day you needed the protection.
Try this now
Five minutes, and it shows you something on your own screen that most option courses only describe in words.
- Open your broker's strategy or basket window. Choose a liquid index and the nearest monthly expiry.
- Build a bear put spread: long the put about 2% below the current level, short the put about 4% below. Note the debit, and note the width.
- Divide the debit by the width. Write the fraction down.
- Now build a bull call spread the mirror distance away: long the call about 2% above, short the call about 4% above. Same width. Note that debit.
- Divide that debit by the width. Write it down next to the first fraction.
What you should see. In most markets, most of the time, the 2 fractions are not equal. The put spread usually costs a smaller fraction of its width than the call spread does, even though the strikes are the same distance away.
That difference is the skew, measured on your own screen in about 4 minutes. It is the market telling you it thinks a fall of a given size is more likely than a rise of the same size, or at least that more people are willing to pay to be protected from it.
Two useful conclusions follow. Selling puts is better paid than selling calls, for a reason. And when you buy a put outright, you are paying the most expensive part of the chain, which is exactly why the spread version exists.
Three real cases
1. A Robinhood customer account, June 2020 — the display that was not the loss Alex Kearns, a 20 year old student, took his own life in June 2020 after his account showed a negative cash balance of about 730,000 dollars. the figures and the timeline in the family's 2021 lawsuit and the subsequent reporting. The balance arose from a multi-leg options position in which 1 leg had been assigned and the offsetting leg had not yet been settled and displayed. The final position was very much smaller than the number on the screen.
Two things must be taken from this. First, a broker's intraday display of a partially settled multi-leg assignment is not your loss, and you should never act on it without speaking to the broker. Second, and more important, an options platform that will approve a 20 year old for spread trading with no meaningful support at the moment it matters is a structural problem, not a personal failing. If you are ever looking at a number like this, stop, and talk to a human being before you do anything else.
2. Wirecard AG, February 2019 and June 2020 — the bearish bet that was banned, and then correct The German regulator prohibited new net short positions in the company's shares from 18 February 2019 for a period of 2 months, following market turbulence and press allegations. the exact dates and scope of the BaFin order. In June 2020 the company disclosed that 1.9 billion euros of reported cash did not exist, and it filed for insolvency on 25 June 2020. Options remained tradable when the short-selling ban was in force, which is one reason puts are used for bearish views. It is also a reminder that the authorities can restrict bearish positions, and that a restriction is not evidence about the company.
3. Yes Bank, March 2020 — the gap that a spread would have capped The Reserve Bank of India placed the bank under a moratorium on 5 March 2020 and the share price fell dramatically the following session. the exact percentage move and the sequence of restrictions. A holder of outright puts was paid on the whole distance. A holder of a narrow put spread was paid the width of the spread and no more. Both were right. Only 1 was paid for how right they were.
The question that resolves it
A novice asks: how cheap can I make this bearish bet? An expert asks: is this a view, or is this protection? A view should be capped, because being bearish is usually wrong and should be affordable to repeat. Protection must never be capped below the level where the damage begins.
What would make this wrong
If skew did not exist, the put spread and the call spread would cost the same fraction of their width at equal distance. Measure it on your own screen using the exercise above. In most markets, most of the time, they do not.
The honest limits.
Skew is not constant and it can invert. In a takeover situation, or in a stock being squeezed, calls can become the expensive side. Measure it rather than assuming it.
And capping a bearish view is often correct. Directional bearish bets have a poor long-run record because indices rise over time. A structure that lets you be wrong 8 times for a known, small amount, and paid a modest amount on the ninth, is a more survivable way to hold a bearish view than buying outright puts and watching them expire. The mistake is not capping. The mistake is capping something you were relying on to protect you.
In India
Settlement. Index options are cash settled and European. Single-stock options are physically settled, so a bear put spread on a stock can end in an obligation to deliver shares you do not own.
Short delivery. If you exercise a put without holding the shares, the obligation goes to the exchange's auction process, and the penalty can be significant. the current NSE auction settlement rules and penalty rates. This is the single largest hidden risk in Indian single-stock option spreads and it is almost never explained alongside the payoff diagram.
The ban period. When open interest in a stock's derivatives crosses the market-wide position limit, the exchange places that stock in a ban period. No new positions may be opened. Only closing trades are permitted. the current threshold, which has been at 95% of the market-wide position limit. A trader who wanted to roll or restructure a spread in a stock under stress may find that only 1 of the 2 available actions is allowed.
Short selling. India has no deep securities lending market for retail investors. Puts and futures are effectively the only bearish instruments available to most people, which concentrates bearish demand into the options market and steepens the skew.
Taxes. Securities transaction tax applies on the sale of options on the premium, and on exercise on the intrinsic value. the current rates.
In the United States
Settlement. Options on shares and funds are American and physically settled. Index options on the main benchmark are European and cash settled.
Assignment on the short leg. A short put is most likely to be assigned early when it is deep in the money and has little time value left. You then own 100 shares, financed on margin, against a long put.
Exercise without shares. A long put exercised without stock creates a short stock position. If the stock is hard to borrow, borrowing costs can be large and the broker may close the position without warning under buy-in rules. the current Reg SHO close-out requirements.
Short-selling restrictions. The alternative circuit breaker under Reg SHO restricts short sales in a stock that has fallen 10% in a day. the current rule. Options remain tradable, which is a further reason bearish activity concentrates there.
Margin. A debit spread requires only the debit, which makes small bearish positions genuinely accessible.
Where they differ, and what that tells you
The delivery failure is different, and the Indian one is harsher. In the United States, exercising a put without shares makes you short the stock. That is a position, and it costs money to hold, and it can be closed. In India, the same action creates a failed delivery that is resolved through an auction, with a penalty, and you do not get to choose the price.
What that tells you is where each market puts the burden. The American system lets you carry the mistake and charges you rent. The Indian system settles the mistake for you and charges you a fine. The Indian version is more final, which means an Indian trader must close single-stock option positions before expiry as a rule, not as a preference.
The second difference is what a bearish view even means. In the United States, selling a stock short is a normal, available action for a retail account with margin. Options compete with it. In India, for most investors, there is no practical alternative to derivatives at all. That single fact is why Indian options skew is what it is, why put buying is so concentrated, and why bearish positioning in India is more expensive than an American textbook suggests.
The practical instruction is therefore different in each place. In the United States, compare the cost of the put spread with the cost of simply shorting a smaller amount of stock. In India, that comparison is unavailable, so compare the put spread with the outright put and decide honestly whether you are buying a view or buying protection.
Carry this
- The cap sits exactly where a crash starts to matter. Never cap a hedge there.
- Put spreads cost a smaller fraction of their width than call spreads. That is the skew, and you can measure it in 4 minutes.
- A long put exercised without shares is a delivery problem in both countries, and a penalty in India.
- Close both legs before expiry week.
Knowledge check
Related
- The bull call spread
- The protective put
- The iron condor
- Vega, and how volatility alone moves your option
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