--- title: 'Why 90% of Traders Lose (It''s Just Math)' source: 'https://youtube.com/watch?v=1DSD2h8xdnA' video_id: '1DSD2h8xdnA' date: 2026-08-10 duration_sec: 152 channel: 'SMB Capital' --- # Why 90% of Traders Lose (It's Just Math) > Source: [Why 90% of Traders Lose (It's Just Math)](https://youtube.com/watch?v=1DSD2h8xdnA) ## Summary This video explains why most retail traders lose money in options trading and how professional traders flip the odds in their favor by focusing on positive expectancy rather than luck. Seth Freyberg uses the analogy of a casino's edge in roulette to illustrate how professionals build strategies with defined risk, reward, and a mathematical advantage. ### Key Points - **The Casino Analogy** [00:02] — Professional options traders are like the casino, which has a mathematical edge. In roulette, betting red or black is not a 50-50 proposition because of the two green numbers, giving the casino a 5.4% edge. This is called positive expectancy. - **Why Retail Traders Lose** [00:49] — Retail traders often buy calls without understanding probabilities. An example is given where a stock at $82, a 30-delta call option is bought for $140. Even if the stock goes up to $86, the trader loses 100% of the premium because the option's delta indicated only a 30% chance of finishing in the money. - **Professional Strategy** [01:19] — Professionals build strategies with a time-tested win rate, defined risk, defined reward, and positive expectancy. An example strategy wins 60% of the time, making 15% on wins and losing 7.5% on losses, risking $1 to make $2. - **The Math of Expectancy** [01:46] — Out of 100 trades, 60 wins at $900 equals $54,000, and 40 losses at $450 equals $18,000, resulting in a net profit of $36,000. Even with a 50% win rate, the strategy is profitable because the reward is double the risk. - **The Edge Formula** [02:11] — The key difference is that gamblers focus on luck, while professionals focus on edge. Edge equals probability times reward minus probability times risk. If this number is positive, you are the casino. - **Consistency Over Luck** [02:27] — Trading like the casino with tested systems, discipline, and controlled risk means you don't need luck. You just need volume and consistency to make money as a professional options trader. ### Conclusion The key takeaway is that successful trading is not about being right on every trade but about having a positive mathematical expectancy. By focusing on edge, defined risk, and consistency, traders can shift from gambling to operating like a casino. ## Transcript Professional options traders, they are the casino. And that one shift changes everything. Hi, I'm Seth Freyberg and today I'm going to show you why 90% of today I'm going to show you why 90% of traders lose and how pros flip that math in their favor. Let's start with the casino. In roulette, you think betting red or black is a 50-50 proposition, but it's not. There are 18 red, 18 black, and two green numbers. That tiny difference gives the casino a 5.4% edge. So for every $1 bet, the casino makes 5.4 cents over thousands of bets. That's called positive expectancy. The house always wins because the math is on its side. Now let's talk options. Most retail traders buy calls. Example, retail traders buy calls. Example, stocks at 82. They buy an 87 half call, stocks at 82. They buy an 87 half call, a 30 delta call for $140. the stock goes up to 86. They're right, but they still lose 100% of their premium. Why? Because the call options delta says there was only about a 30% chance that the option would finish in the money. They weren't trading probabilities. They were gambling. Now, here's what professionals do differently. We build strategies with a time- tested win rate, defined risk, defined reward, and positive expectancy. Let me show you the real numbers. Let's say we have a strategy that wins 60% of the time. When we win, we make 15%. When we lose, we lose 7.5%. So, we're risking we lose, we lose 7.5%. So, we're risking $1 to make $2. Out of a 100 trades, 60 $1 to make $2. Out of a 100 trades, 60 wins times $900 is 54,000. 40 losses wins times $900 is 54,000. 40 losses times $450 is $18,000. Net profit times $450 is $18,000. Net profit 36,000. That's expectancy. Even if the win rate drops to 50%, you still make money because your reward is double your risk. That's the difference. Gamblers focus on getting lucky. Professionals focus on edge. Edge equals probability times reward minus probability times risk. If that number is positive, you're the casino. And when you trade like the casino with tested systems, discipline, and controlled risk, you don't need luck. You just need volume and consistency. That's how professional consistency. That's how professional options traders make money.