Opening, Closing & Settlement

Settlement

When an investor buys or sells an option contract, the trade settles one business day after the trade date (T - trade date + 1). During an equity option exercise, a stock transaction occurs. Stock transactions also have a settlement time of one business day (T+1).

Expiration and cutoff times

Holders must exercise their contracts before they expire. Standard options expire within nine months of their issuance. Option contracts reference the month they expire.

For example, a Coca-Cola Inc. (ticker: KO) January stock option expires on the third Friday of January, technically at 11:59pm ET (10:59pm CT). The expiration date is typically referred to as “Expiration Friday.”

In addition to the expiration time, there are a few other deadlines to know. The options market closes at 4:00pm ET (3:00pm CT), which is the normal closing time for most stock markets (open from 9:30am - 4:00pm ET Monday through Friday). On Expiration Friday, 4:00pm ET is also the trading cutoff for options.

🔑 Expiration Friday deadlines:

Opening & closing transactions

Every options trade is either an opening transaction or a closing transaction. 🔑 There are four types of options transactions to know:

• Opening purchases
• Opening sales
• Closing purchases
• Closing sales

When an investor establishes an options position, they enter an opening transaction. Opening transactions represent the start of a contract between two parties.

• Investors who establish long options positions execute opening purchases.
• Investors who establish short options positions execute opening sales.

🔑 Four-transaction master table:

Worked examples — opening transactions

An investor opens an options account at their broker-dealer and immediately establishes 1 long Mar 50 call at $5. What type of options transaction was performed?

Answer = opening purchase

It is an opening purchase for two reasons. First, the investor is establishing a new options position, which makes it an “opening” transaction. Second, the investor is buying (going long) the option, so it is a “purchase” transaction. Putting both together, we have an opening purchase.

An investor opens an options account at their broker-dealer and immediately establishes 1 short Oct 90 put at $8. What type of options transaction was performed?

Answer = opening sale

It is an opening sale for two reasons. First, the investor is establishing a new options position, which makes it an “opening” transaction. Second, the investor is selling (going short) the option, so it is a “sale” transaction. Putting both together, we have an opening sale.

Exiting positions

Investors can exit an options position before it is exercised or expires by trading their position to another investor. It helps to think about this from two perspectives:

• Closing long options
• Closing short options

Closing long options

When an investor buys (goes long) an option, they can exit by selling that same contract later.

For example, if you own an option that gives you the right to sell stock at $50 (long 50 put), another investor might want that contract. You could sell it for the option’s current premium. This is a closing sale:

• It’s “closing” because you’re exiting the position.
• It’s a “sale” because you’re selling the option.

Closing short options

The opposite applies to option writers.

Suppose you initially establish a short position that creates an obligation to buy the stock at $50 (short 50 put). You can exit by buying the same option contract in the market.

When you buy the same contract, the investor selling it takes over your obligation. This is a closing purchase:

• It’s “closing” because you’re exiting the position.
• It’s a “purchase” because you’re buying an option.

⚠️ Closing purchases and sales can be confusing, so keep the core idea in mind:

Worked examples — closing transactions

An investor opens an options account at their broker-dealer and immediately establishes 1 short Dec 25 call. One week before expiration, the investor requests to exit the position. What options order must be submitted to execute the transaction?

Answer = closing purchase

Initially, the investor established the short call through an “opening sale.” However, the question is asking about exiting (closing) the position.

It is a closing purchase for two reasons. First, the investor is exiting a current options position, which makes it a “closing” transaction. Second, the investor must buy (go long) the option to exit the position, so it is a “purchase” transaction. Putting both together, we have a closing purchase.

An investor opens an options account at their broker-dealer and immediately establishes 1 long Jun 65 put. One week before expiration, the investor requests to exit the position. What options order must be submitted to execute the transaction?

Answer = closing sale

Initially, the investor established the long put through an “opening purchase.” However, the question is asking about exiting (closing) the position.

It is a closing sale for two reasons. First, the investor is exiting a current options position, which makes it a “closing” transaction. Second, the investor must sell (go short) the option to exit the position, so it is a “sale” transaction. Putting both together, we have a closing sale.

Key points

Options trades

• Settle in one business day (T+1)

Option exercises

• Settle in one business days (T+1)

Option expiration

• Third Friday of the month at 11:59pm ET
• Trade cutoff is 4:00pm ET
• Exercise cutoff is 5:30pm ET

Opening transactions

• Start option positions
• Two types:
  • Opening purchases
  • Opening sales

Closing transactions

• End option positions
• Two types:
  • Closing purchases
  • Closing sales

Sources

Primary/official references for the material in this chapter. Every link was fetched and returned HTTP 200 on 2026-08-15.