7 COMMON MISTAKES THAT AMPLIFY SPREAD COSTS IN LONG-TERM TRADINGSpread costs are the silent killer of long-term trading returns. They don’t show up as a line item on your statement, but they eat into profits every time you enter or exit a trade. Over years, these tiny fees compound into thousands—or tens of thousands—of lost dollars. The worst part? Most traders don’t even realize they’re making mistakes that amplify these costs.If you’re serious about protecting your returns, you need to identify and fix these seven common errors. Each one quietly drains your account, but the fixes are straightforward once you know what to look for.---MISTAKE #1: TRADING DURING LOW-LIQUIDITY HOURSSpreads widen when liquidity dries up. This happens during off-market hours, like the first and last 30 minutes of the trading day, or when major markets overlap poorly. If you’re trading EUR/USD at 3 AM EST, you’re paying a premium for the privilege.The fix is simple: trade when volume is highest. For forex, that’s the London-New York overlap (8 AM to 12 PM EST). For stocks, it’s the middle of the trading day (10 AM to 3 PM EST). Check the average spread for your asset during these windows—then avoid trading outside them.Milestone to watch: If you consistently see spreads 2-3x wider than the daily average, you’re trading at the wrong time.---MISTAKE #2: USING MARKET ORDERS FOR LARGE POSITIONSMarket orders execute immediately at the best available price—but "best available" can be terrible for large orders. The more shares or contracts you trade, the more you move the market against yourself. This is called slippage, and it inflates your effective spread cost.The solution: break large orders into smaller chunks or use limit orders. A limit order lets you set the maximum price you’re willing to pay (for buys) or the minimum you’ll accept (for sells). You won’t get filled instantly, but you’ll avoid paying an extra 0.5% or more in slippage.Milestone to watch: If your fills are consistently worse than the quoted spread, your order size is too big for market conditions.---MISTAKE #3: IGNORING THE BID-ASK BOUNCEEvery asset has a bid (what buyers will pay) and an ask (what sellers want). The difference is the spread. If you buy at the ask and immediately sell at the bid, you lose the spread instantly—even if the price doesn’t move. This is the bid-ask bounce, and it’s a hidden tax on short-term trades.The fix: don’t trade unless you expect the price to move enough to cover the spread. For example, if the spread on a stock is $0.05, you need at least $0.06 of movement in your favor just to break even. If your strategy relies on tiny moves, you’re fighting an uphill battle.Milestone to watch: If your winning trades make less than 2x the spread, you’re not accounting for the bounce.---MISTAKE #4: HOLDING POSITIONS OVERNIGHT OR OVER WEEKENDSSpreads widen when markets close. Overnight, liquidity disappears, and market makers charge more to take the other side of your trade. The same happens over weekends—especially in forex, where spreads can double or triple on Friday afternoon and stay wide until Sunday night.The fix: close positions before the market closes or avoid holding over weekends. If you must hold, use limit orders to exit at a better price than the current spread. For example, if the spread on EUR/USD is 0.8 pips at 4:55 PM EST, set a limit order to sell at 0.4 pips above the bid.Milestone to watch: If your overnight or weekend exits consistently lose more than the spread, you’re paying a premium for holding.---MISTAKE #5: TRADING EXOTIC OR LOW-VOLUME ASSETSExotic currency pairs (like USD/TRY or EUR/ZAR) and low-volume stocks have wide spreads because few traders are active in them. The spread on USD/TRY can be 50 pips or more, while EUR/USD might be 0.5 pips. That’s a 100x difference.The fix: stick to liquid assets. For forex, focus on majors (EUR/USD, USD/JPY, GBP/USD) and minors (EUR/GBP, AUD/USD). For stocks, trade S&P 500 components or large-cap ETFs. If you must trade exotics, use limit orders and be prepared to wait for a fill.Milestone to watch: If the spread on your asset is more than 0.1% of the price, it’s too illiquid for long-term trading.---MISTAKE #6: PAYING COMMISSIONS ON TOP OF SPREADSSome brokers charge both a spread and a commission. This is common in forex (ECN accounts) and stock trading (per-share fees). If you’re paying $5 per trade on top of a 1-pip spread, your effective cost is much higher than you think.The fix: calculate your all-in cost before trading. For forex, look for brokers with raw spreads (0.1 pips or less) and a small commission ($3-$5 per lot). For stocks, use brokers with $0 commissions or flat-rate pricing. Always compare the total cost, not just the spread.Milestone to watch: If your broker’s all-in cost is more than 0.05% of your trade value, switch to a cheaper option.---MISTAKE #7: TRADING WITHOUT A SPREAD BUDGETMost traders don’t track how much they lose to spreads. They focus on win rate or profit factor but ignore the silent drain. If you’re paying 0.5% per trade in spreads and making 1% on winners, your real profit is only 0.5%—before slippage, commissions, or fees.The fix: calculate your spread cost as a percentage of your average trade. For example, if you trade 100 shares of a $50 stock with a $0.05 spread, that’s $5 per trade, or 0.1%. If your average profit is $20, spreads eat 25% of your gains. Aim to keep spread costs below 10% of your average profit.Milestone to watch: If spreads consume more than 20% of your gross profits, your strategy is too spread-sensitive.---HOW TO FIX THESE MISTAKES FOR GOOD1. Trade during high-liquidity hours. Avoid impact of spread size on day trading , close, and low-volume periods.2. Use limit orders for large positions. Market orders are for small, urgent trades only.3. Account for the bid-ask bounce. Your target must exceed the spread.4. Close positions before the market closes. Overnight and weekend spreads are a trap.5. Stick to liquid assets. Exotics and low-volume stocks are spread killers.6. Choose brokers with low all-in costs. Spreads + commissions must be minimal.7. Track your spread costs. If they’re too high, adjust your strategy or asset selection.---THE BOTTOM LINESpread costs are small on a single trade but massive over time. Every mistake above compounds into thousands of lost dollars. The good news? These errors are easy to fix once you know what to look for.Start by auditing your last 20 trades. How much did spreads cost you? If it’s more than 10% of your profits, you’re leaving money on the table. Fix one mistake at a time, and your long-term returns will thank you.