Assignment & Assignment Risk
Assignment is when your put option is exercised and you receive 100 shares at the strike price. For most options sellers, assignment feels like failure. In the Wheel system, assignment is Phase 2 beginning — not a problem, a transition.
How Assignment Happens
Your put is in the money at expiration (stock below strike) → the put buyer exercises → you receive 100 shares in your account → your cash balance decreases by (strike × 100) → you now own the stock. This process is automatic. ThinkorSwim handles it overnight at expiration.
You can also be assigned early on American-style options, though this is rare. If the put goes deep in the money and there's very little time value remaining, the buyer may exercise early to take the shares.
Your Cost Basis After Assignment
The critical calculation — your true cost basis is NOT the strike price. It's the strike price minus all premiums collected on that position.
Example: SWN at $7.00. You sold the $6.50 put for $0.35. Stock falls to $6.10 at expiration. You're assigned at $6.50. Your effective cost basis = $6.50 – $0.35 = $6.15. You don't need the stock to recover to $6.50 to be profitable — you need it to get above $6.15 plus any covered call premium you collect in Phase 3.
What to Do Immediately After Assignment
Managing Assignment Risk Before Expiration
As your put moves in the money with time remaining, you have options. You don't have to wait for assignment:
Roll down and out: Buy back the current put at a loss, sell a new put at a lower strike and/or further expiration for net credit. This lowers your potential assignment price and extends the runway.
Accept assignment and pivot to covered calls: Sometimes the cleanest choice. Accept the shares, start selling covered calls immediately.
Close the position: Buy back the put and take the loss. This is correct if your original thesis is broken — the stock is falling on structural reasons, not just volatility. Pass 3 Monitor will show a RED signal in this case.
If the stock is in freefall (down 10%+ on high volume, RSI below 20, fundamental news changing the thesis) — buy back the put before expiration, take the loss, and do not accept assignment. The "would I hold 30 days?" test applies now too. If the answer has changed to NO because of new information — exit before assignment.