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Common Options Trading Mistakes

By the OptionProfit Editorial Team · Updated June 2026 · 2 min read · Risk disclaimer

Most options losses do not come from bad luck — they come from a handful of avoidable mistakes that beginners repeat. Learn to recognise them and you remove the biggest obstacles between you and a sustainable approach.

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The big mistakes

Ignoring time decay: buying out-of-the-money options and watching theta bleed them to zero while waiting for a move that comes too late.

Position sizing: putting too much capital into one trade, so a single normal loss does serious damage to the account.

Chasing cheap options: far-OTM “lottery tickets” have low probability and most expire worthless, however tempting the payoff looks.

Trading illiquid contracts: wide bid/ask spreads quietly eat your edge on every entry and exit.

Mistakes when selling premium

Selling naked options without understanding the open-ended risk, or holding short premium to expiration just to squeeze the last few dollars while gamma risk explodes.

Rolling losing trades indefinitely for small credits, which hides a growing directional loss behind the comfort of “managing” the position.

How to avoid them

Model every trade first: check breakeven, probability of profit, max loss and the Greeks before you enter, and only trade liquid underlyings.

Size small, define your risk with spreads, and write down an exit plan for both profit and loss before the trade goes on.

Worked example. A new trader puts 40% of the account into far-OTM weekly calls because they are “cheap”. The stock drifts sideways, theta erodes them, and they expire worthless — a large account hit from a low-probability bet that was never sized or modelled.
Key takeaways

Frequently asked questions

What is the single most common beginner mistake?

Oversizing — risking too much on one trade — closely followed by buying cheap OTM options and ignoring time decay.

How big should each options trade be?

Small enough that a maximum loss is a minor dent, not a disaster — many traders risk only 1–5% of the account per trade.

How do I stop making these mistakes?

Model every trade in a calculator, trade liquid names, define your risk with spreads, and keep a written plan for entries and exits.

Related strategies:
Long CallCovered CallIron Condor
Related guides (all guides):
Best Options Strategy for BeginnersProbability of Profit & Expected MoveTheta Decay & Selling Premium

Educational use only. Quotes are delayed ~15 minutes and nothing here is financial advice. Options trading involves substantial risk of loss. Privacy · Terms.