Understanding Options Assignment
Learn what happens when you get assigned on an option, how to calculate your cost basis, and why assignment isn't always bad.
Understanding Options Assignment
Assignment is when the option buyer exercises their right, and you (the seller) must fulfill your obligation. For wheel traders, understanding assignment is crucial because it's part of the strategy.
Exercise vs Assignment
| Term | Who | Action |
|---|---|---|
| Exercise | Option buyer | Uses their right to buy/sell shares |
| Assignment | Option seller | Must fulfill the obligation |
When a buyer exercises, a seller is assigned. The two are connected.
How Assignment Works
Put Assignment (You Sold a Put)
- Buyer exercises their right to SELL shares to you
- You are ASSIGNED the obligation to BUY shares
- You receive 100 shares per contract
- You pay the strike price × 100
Call Assignment (You Sold a Covered Call)
- Buyer exercises their right to BUY shares from you
- You are ASSIGNED the obligation to SELL shares
- You deliver 100 shares per contract
- You receive the strike price × 100
When Does Assignment Happen?
At Expiration:
- Options that are $0.01+ in-the-money are typically auto-exercised
- This triggers assignment for sellers
Before Expiration (Early Assignment):
- Can happen anytime with American-style options
- More likely when:
- Option is deep in-the-money
- Little extrinsic value remains
- Dividend is larger than remaining extrinsic value (calls)
Calculating Cost Basis After Put Assignment
When assigned on a put, your cost basis is:
Cost Basis = Strike Price - Premium Received
Example:
- Sold $47.50 put for $1.50 premium
- Stock drops to $45, you get assigned
| Component | Amount |
|---|---|
| Strike Price | $47.50 |
| Premium Received | -$1.50 |
| Your Cost Basis | $46.00 |
Even though the stock is at $45, you effectively paid $46 per share - a $1 paper loss instead of the $2.50 loss you'd have if you just bought the stock at $47.50.
Calculating Sale Price After Call Assignment
When assigned on a call, your effective sale price is:
Effective Sale = Strike Price + Premium Received
Example:
- Own shares at $46 cost basis
- Sold $50 call for $1.25
- Stock rises to $52, you get assigned
| Component | Amount |
|---|---|
| Strike Price | $50.00 |
| Premium Received | +$1.25 |
| Effective Sale | $51.25 |
Your profit per share: $51.25 - $46.00 = $5.25
Why Assignment Isn't Always Bad
In the wheel strategy, assignment is often GOOD:
Put Assignment Benefits:
- You wanted to own the stock anyway
- You bought at your chosen price
- You already collected premium
- Now you can sell covered calls
Call Assignment Benefits:
- You sold at a price you were happy with
- You kept all the premium
- You locked in a profit
- Now you have cash to sell more puts
The Assignment Notification Process
- Notification - Your broker notifies you (usually overnight)
- Settlement - Shares and cash exchange (T+1 for options)
- Position Update - Your account reflects the new shares/cash
Early Assignment Scenarios
When to Expect Early Assignment:
| Situation | Risk Level |
|---|---|
| Deep ITM, no extrinsic value | High |
| Call ITM before ex-dividend | High |
| Day before expiration, ITM | Medium |
| ITM with significant extrinsic | Low |
Handling Early Assignment:
- Not a problem for cash-secured puts (you have the cash)
- Not a problem for covered calls (you have the shares)
- Continue with your wheel strategy
What If You're Assigned at a Bad Price?
Sometimes the stock drops significantly before you're assigned:
Options:
- Hold and sell calls - Lower your cost basis over time
- Hold for recovery - Wait for the stock to rebound
- Sell and move on - Take the loss if outlook is bad
- Average down - Sell more puts at lower strikes (use caution)
Important: Only sell puts on stocks you'd be comfortable holding long-term. This makes assignment a minor inconvenience rather than a disaster.
Tax Implications of Assignment
| Event | Tax Treatment |
|---|---|
| Selling a put | Premium is short-term income when option closes |
| Put assignment | Premium reduces cost basis of shares |
| Selling a call | Premium is short-term income when option closes |
| Call assignment | Premium adds to sale proceeds |
The holding period for shares starts when you're assigned (put) or when you originally bought them (call).
Assignment Checklist
Before selling any option, ask yourself:
- Am I comfortable owning this stock at the strike price?
- Do I have the cash to be assigned (puts)?
- Am I willing to sell at this strike price (calls)?
- What's my plan if assigned?
- Is this a stock I'd hold long-term if needed?
If you answer "yes" to all, assignment is just part of the plan, not a problem.
In the next lesson, we'll dive into the wheel strategy itself and how it combines these concepts.