HomeBlogThe 10 F&O Mistakes We See Traders Repeat — Even Smart Ones
Trading Psychology 10 min readMar 15, 2026

The 10 F&O Mistakes We See Traders Repeat — Even Smart Ones

After watching thousands of paper trades on PaperPe, the same 10 mistakes show up constantly. What is painful is that most of them are not beginner mistakes — experienced traders make them too. Here is the full list with the honest fix for each.

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We Have Seen Thousands of Trades. The Patterns Are Clear.

Running PaperPe, we have a view most retail traders never get — we see the full pattern of how people trade, not just their winning trades that get screenshot-shared.

What strikes us most is not how many traders make mistakes. It is how consistently the same mistakes repeat across different traders, different backgrounds, different experience levels.

These are the 10 we see most. Every one of them is fixable.

Mistake 1: Opening the Platform at 9:30 AM With No Plan

This is the root cause of half the other mistakes on this list.

No defined setup. No stop loss decided. No target. Just watching price move and reacting emotionally. A 30-point drop triggers a panic sell. A bounce triggers a revenge buy.

This is not trading. This is paying brokerage to feel the market's stress directly.

The fix: Before market opens, write down: What specific setup am I waiting for today? Entry level? Stop loss? Target? Maximum number of trades? Maximum loss that stops me for the day? If you cannot answer all five, do not trade that day.

Mistake 2: Buying Deep OTM Options Because They Are "Cheap"

₹15 options feel like a bargain — you can buy 10 lots. The problem: a ₹15 NIFTY option needs a 300+ point move just to break even. How often does NIFTY move 300+ points in a single week in one direction? Less than 15% of weeks.

You are not buying a cheap option. You are buying a lottery ticket that expires in 4 days.

The fix: ATM or maximum 1–2 strikes OTM. Pay more per lot, trade fewer lots. The extra premium buys you probability, not just hope.

Mistake 3: Holding Weekly Options Through Wednesday Night

One of the most reliable traps in weekly options. Traders hold NIFTY options overnight into Thursday, expecting a morning gap to save them. Instead: theta collapses the option overnight, Thursday opens flat, and the option that was ₹60 on Wednesday is now ₹12.

We see this destroy accounts on PaperPe regularly.

The fix: Close all weekly positions by Wednesday afternoon. Non-negotiable. The theta cliff between Wednesday close and Thursday morning is brutal and predictable.

Mistake 4: Averaging Down on Losing Options

"I bought at ₹100, it is now ₹55, I will buy more to lower my average." This is a stock trading habit that destroys option traders.

Options are expiring contracts. They do not care about your average cost. An option at ₹55 can reach ₹0 in a single session. Doubling your position doubles your maximum loss.

The fix: Options are not investments. Define your maximum loss before entry. When that is hit, exit — no averaging, no hoping.

Mistake 5: Trading Five Instruments Simultaneously

NIFTY, BANKNIFTY, GOLDM, CRUDEOIL, and three individual stocks. We see traders monitor all of these at once, miss setups on all of them, and execute poorly on the ones they do catch.

Attention is finite. Spreading it across five instruments means you are mediocre at all of them.

The fix: Pick one instrument and trade only that for six months. Understand its personality — how it trends, how it consolidates, how it behaves around key levels. Mastery of one beats surface knowledge of five.

Mistake 6: Ignoring What Trades Actually Cost

Each NIFTY options round trip costs approximately ₹55–70 in brokerage, STT, exchange charges, and GST. Ten trades per day across 3 lots: that is ₹1,650–2,100 in daily costs before you count a single loss.

₹33,000–42,000 per month just to participate. Before profits.

The fix: Calculate your daily cost just to trade. Every trade needs to overcome this before generating profit. Trade fewer, higher-conviction setups.

Mistake 7: Following Telegram Tips and YouTube Traders

We are going to be direct about this. Almost every free Telegram F&O tip channel either: (a) has a financial product to sell you, (b) is exiting their own position into your entry, or (c) is just wrong and generates followers from the 20% of tips that happen to be right.

SEBI has prosecuted multiple finfluencers for this. The pattern is not rare.

The fix: If the tips were reliably profitable, they would be trading — not creating content. Your analysis, even imperfect, beats their tips.

Mistake 8: Removing Stop Losses Because "They Always Trigger"

"My stop loss triggers and then the market reverses" is the most common rationalisation for the most dangerous habit in trading.

Yes, stop losses trigger. Sometimes the market does reverse after. What they are preventing is the 20% of times where it does not reverse — where the trade goes -30%, -50%, -80%.

The fix: Set stop losses before entry, not while watching the trade. Use bracket orders or GTT orders at your broker. Remove the ability to make the decision emotionally.

Mistake 9: Letting One Big Win Rewrite Your Risk Limits

This is the subtlest mistake on the list. A trader makes ₹60,000 in one week on a BANKNIFTY call. Feels good. Sizes up next week. Loses ₹80,000. Sizes up more to recover. Loses everything.

The original ₹60,000 was real money. But it came from a single trade. One trade is not evidence of an edge. One big win is noise. A profitable edge is visible across at least 50 trades.

The fix: Position size rules are permanent. They do not change because of a big win or a big loss. Decide the rules before your first trade and do not renegotiate them in the middle of a streak.

Mistake 10: Skipping Paper Trading Entirely

"I learn better with real money at stake." We hear this constantly. We disagree completely.

Real money creates emotional interference that actively prevents learning. You exit winners too early (scared to lose gains). You hold losers too long (cannot accept the loss). You make different decisions than you would with a clear head.

Paper trading is not practice for real trading. It is the only environment where you can isolate skill from emotion and actually learn what works.

The fix: Paper trade a strategy for at least 3 months across different market conditions before any real money. When it shows consistent positive expectancy over 50+ trades, then consider small real capital.

The Thing They All Have in Common

Every mistake on this list comes from the same place: treating trading as entertainment rather than a craft.

The market is the most competitive game in the world. The other side of your trade is often an algorithm built by a team of engineers, or an institutional desk with a decade of data. Taking it casually means donating to whoever is taking it seriously.

PaperPe exists to give you a place to take it seriously before real money is involved. Use it.

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