Mistake 1, critical severity
Buying Naked Options at High IV Before Earnings
Buying calls or puts right before earnings when IV is at its peak. Even if you get the direction right, IV crush can destroy 30-50% of the option's value overnight.
The fix
Use spreads instead of naked options to reduce vega exposure. If you must buy directional, use the nearest weekly expiration to minimize the IV crush impact. Or wait until after earnings for cleaner setups.
What it looks like. NVDA IV rank at 90% before earnings. Buy $130 call for $8.00. NVDA beats and rises 4%. IV drops 40%. Call now worth $7.50. You were right on direction and still barely broke even.
Mistake 2, critical severity
Ignoring the Expected Move
Not calculating whether the stock needs to move more than the options market expects. If the ATM straddle costs 8% of the stock price, a 5% move means both straddle buyers lose.
The fix
Always calculate the expected move before placing an earnings trade. Use our Event Analysis tool to see implied vs. historical moves. Only buy volatility if you expect the stock to exceed the implied move.
What it looks like. AAPL straddle costs $10 (5.5% of stock). Stock moves 4% after earnings. Straddle buyers lose money despite the significant move. The market already priced in a 5.5% move.
Mistake 3, high severity
Oversizing Earnings Positions
Allocating 10-20% of account to a single earnings play. Earnings are binary events with unpredictable outcomes. Oversizing turns a trade into a gamble.
The fix
Limit earnings positions to 1-2% of account risk maximum. If you are selling premium, ensure the max loss on any single earnings trade is under 3% of your account. Diversify across multiple earnings dates.
What it looks like. Put 15% of $20,000 account into META earnings straddle. META drops 8%, straddle loses 40%. $1,200 loss on one trade. That is 6% of the account on a coin flip.
Mistake 4, high severity
Holding Through Earnings Without a Plan
Having existing options positions span earnings without realizing it. Your iron condor or credit spread gets destroyed by a post-earnings gap you did not anticipate.
The fix
Check the earnings calendar before placing any trade. Close or adjust all positions that span earnings unless you specifically intended to trade the event. Never let earnings surprise you.
What it looks like. Sold AMZN put spread 3 weeks ago. Forgot earnings was this week. AMZN misses and drops 12%. Put spread goes to max loss. Should have closed before the announcement.
Mistake 5, medium severity
Chasing After-Hours Moves
Seeing a big after-hours move and buying options at the open, assuming the move will continue. By the open, the move is priced in, and IV has already crushed.
The fix
Never chase the initial after-hours move. Wait for the market to settle (usually 30-60 minutes after open). IV will normalize, and you can assess the real setup without the emotional spike.
What it looks like. GOOGL pops 8% after hours on earnings. Buy calls at the open paying inflated premium. GOOGL gives back 3% during the first hour as sellers take profits. Calls lose 25% immediately.
