Binary Options
Nadex's binary options are quoted between 0 and 100. The higher (or lower) the price, the greater the probability that the final closing price will be above (or below) the strike price. If a binary option expires in-the-money, the payout is $100, minus fees. There are no fees for options that expire out of the money.
A price near 100 means that the probability is high that the expiration price will be above the strike price. Likewise, a price nearer to 0 means that the probability is high that the expiration price will be below the strike price. A price of 50 means that the underlying security's current price is very close to the strike price, and could go either way.
When buying a binary option, you are wagering that the expiration price will be above the strike price. If so, the settlement price will be 100. When selling a binary option, you are wagering that the expiration price will be below the strike price. If so, the settlement price will be 0.
There are two factors that determine the price of a binary option: the relationship between the underlying security's current price and the contract's strike price; and the time remaining until expiration.
When there is a sufficient amount of time until expiration, a wide variety of contracts at different strike prices will be available. As the expiration time draws closer, outlying contracts will gradually settle at 0 or 100, and a smaller range of strike prices will be in play.
Buying a binary option at a lower price means less risk and greater reward, but also a lower probability that the option will finish in the money.
For example, if you buy one contract of a binary option at 30, your maximum profit will be $70, and your maximum loss (and your premium for this trade) will be $30. You only need to win one out of every three trades at this price to make a profit.
Buying a binary option at a higher price means a greater probability that the option will finish in the money, but also greater risk and less reward. If you buy one contract at 70, your maximum profit is $30, and your maximum loss is $70. More than likely, you will profit from this trade, but it takes only one loss to wipe out three winners at this price.
Spread Contracts
Nadex also offers spread contracts. Like a binary option, a spread contract pays out when the underlying security closes higher or lower than the purchase price. A spread contract has an upper and a lower bound. The current purchase price lies somewhere between these bounds, and the total profit or loss for any transaction is based on the initial purchase price.
Unlike binary options, spreads are not an all-or-nothing wager. Your profit or loss is determined by the difference between the purchase price and the expiration price, up to the maximum profit or loss as defined by the upper and lower bounds of the contract.
For example, let's take the spread contract Wall Street 30 (Mar) 10400.00 to 10500.00 at 3PM. "Wall Street 30 (Mar)" is the underlying market (in this case, the CBOT E-mini Dow Futures), 10400.00 is the lower bound, and 10500.00 is the upper bound. 3PM is the expiration time.
The current Bid and Offer prices for this contract will lie somewhere between 10400 and 10500, depending on the current price of the underlying security, the demand for this contract, and the time remaining until expiration. If you buy one lot of this contract at 10450, your maximum profit will be $50, and your maximum loss will be $50.
If the expiration price at 3PM is 10480, then your profit is $30. If the expiration price is 10520, then your profit is limited to the maximum profit of $50. If the expiration price is below your purchase price, then your loss is calculated accordingly up to the maximum loss.
Nadex's spread contracts consist of two types – the master spread, and five narrow spreads. The master spread for forex contracts ranges anywhere from 300-750 points. The narrow spreads subdivide the master spread into five smaller, overlapping spreads, ranging from 100-250 points each for forex contracts.
Nadex's spread contracts are similar to the spread bets offered by UK firms, with a few exceptions. One difference is that Nadex spreads have a clearly defined floor and ceiling price, which limits the total profit and loss. Another difference is that Nadex spreads do not have stop losses. While spread bets are often traded on margin with leverage, Nadex does not offer leverage on their products.
Due to the larger spreads, it may be necessary to put up a larger premium to trade a spread contract than you would for a binary option. The profit or loss for a spread contract can be significantly larger than a binary option for the same contract size.
The major difference between spreads and binary options is that spreads do not expire at their maximum profit or loss. The total profit or loss per trade is dependent on the difference between the settlement price and the purchase price.
On a binary option, if the settlement price is even one point below your purchase price, the contract settles at zero and the full maximum loss is incurred. Whereas for spreads, you only lose the difference between the settlement price and the purchase price, up to the maximum loss.
Spreads offer a different risk profile than binary options, and it is up to you whether you want to trade them. Binary options offer a wider variety of time frames (intraday and weekly), and have a more consistent risk profile. Some of the strategies you'll learn for trading binary options can be applied to spreads as well.
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