That +20% on your screen is not your money yet. Until you sell, it is just a number wearing the name "unrealized." A take-profit is selling to actually bank that number once price reaches your target. Decide in advance to sell a 10,000-won stock at 12,000, and you can realize the 20% gain without hesitation when it arrives.
Take-profit gets its own rule because there is a distinct moment when paper gains turn into real money. The profit on screen can vanish at any time before you sell. The method mirrors the stop-loss almost exactly: at purchase you draw a target line — "if it touches this, I close" — and execute there without flinching. Take-profit pairs with the stop-loss, sketching both the loss you'll accept and the gain you'll bank on a single trade in advance. The ratio between those two lines is what people call the risk-reward ratio.
Here is where most people trip. Greed pushes the target ever higher with "it'll go up more," and then you watch, frozen, as price peaks and rolls back down. Set it too early and you forfeit a whole larger move instead. There is no single correct number for take-profit. It comes down to one thing: discipline in keeping the rule you set.
Scaling In
Scaling in means not buying all at once but accumulating in several smaller purchases. Two goals here: keep dry powder for buying more if price falls further, and spread out your entry timing so you cut the risk of having "bought everything at the most expensive moment." If there is a stock you want, instead of putting all your money in at once, you split it into three and buy once each time the price drops.
Why bother? Because no one can pinpoint the exact "cheapest bottom." Buy everything at once and you take on the risk of putting all your money in at the priciest instant. Splitting purchases spreads your entry timing and reduces the risk of your average cost skewing to one side. It is related in spirit to dollar-cost averaging (DCA), where you put in the same amount on a fixed schedule. One misunderstanding, though: believing diversification eliminates loss itself is simply wrong. If price keeps falling, you still lose money even when scaling in. In particular, it must be clearly distinguished from "averaging down" — relentlessly buying a falling stock with no basis. Scaling in is a discipline for spreading entry-timing risk, not a tool for predicting which asset will rise.
Buy the Dip
Buying the dip is the approach of treating a sharp drop as a chance to buy cheaper than usual and accumulating in installments. The underlying idea goes like this: markets, gripped by fear, sometimes overshoot to the downside, and a good asset can — over time — find its value again. Rather than going all in at once, buying in several tranches leaves room to add more if it falls further, which ties it directly to scaling in.
The problem is a trap buried deep in it. In the moment of a fall, it is hard to know whether the drop is a temporary wobble or the start of a longer, fundamental collapse. So buying down blindly and inflating losses is frequently warned against, and "it fell, so it's cheap" is not always right. As a historical case, the period after the March 2020 COVID crash, when the S&P 500 recovered relatively quickly, is often cited — but that is only a historical record and does not guarantee the future. Buying the dip is not a strategy with guaranteed effect or profit. It becomes meaningful only when paired with stop-loss and scaling-in discipline.
Hedge
Hedging is less about placing a new bet and more about buying insurance. You take another position opposite to one you already hold, to soften the blow when price moves against you. When your holding falls you lose, but the position on the other side gains at that moment, so the two offset and calm the overall swing. Common examples cited are buying put options or a partial position in an inverse ETF when worried about a decline in your stock holdings.
A common misconception is thinking a hedge fully blocks losses, or that it is free. Just as insurance has a premium, a hedge carries a cost like the price of options. The structure is closer to nibbling at your returns in normal times and shining in a crisis. And because you hold both directions at once, you must accept that your gains are also trimmed when the market moves in your favor. A hedge does not buy volatility; it is a trade that pays a cost to reduce volatility.
The Five Rules at a Glance
| Rule | Core purpose | Main risk / cost | Most common mistake |
|---|
| Stop-loss | Fix the max loss on a trade | Too tight, noise stops you out | Dragging the line lower |
| Take-profit | Turn paper gains into real money | Too early, miss the larger move | Greedily raising the target |
| Scaling in | Spread entry-timing risk | Still loses if price keeps falling | Confusing it with averaging down |
| Buy the dip | Enter oversold zones in tranches | Losses grow if decline continues | Assuming "it fell, so it's cheap" |
| Hedge | Cushion price-move shocks | Ongoing cost; trims upside | Mistaking it for full loss protection |
Cautions and Limits
Not one of these five rules guarantees profit. There is no single correct number for stop-loss or take-profit; the loss each person can bear and the targets they set differ. Scaling in and buying the dip only spread entry risk — if the asset itself keeps falling, they cannot prevent loss. A hedge carries a cost, so holding one permanently erodes long-term returns. Above all, these rules only matter if you actually keep the lines you set in advance. The biggest trap is setting a rule and then breaking it in the heat of emotion. The numeric examples above (10,000 to 9,000 won, etc.) are assumptions to explain concepts, not recommendations for any specific security. The 2020 recovery case is also only a historical record and promises no repeat.
Discipline collapses in the gap between what your head knows and what your finger actually clicks. The cheapest way to close that gap is to train your judgment muscle before money is on the line. With PriceGuess's Higher or Lower, build the instinct to quickly judge whether a price will rise or fall, and with the daily price guess, sharpen your eye for reading numbers coolly. Rehearse the decision "I cut it here" again and again before real capital is at stake, and your finger will tremble less when you face an actual stop-loss line.
