If you're looking at charts on TradingView and wondering how to actually translate that analysis into a real, executable trade with proper risk management, you've found the right place. The "Long/Short Position" tool isn't just another drawing tool—it's your integrated trade planning cockpit. I've used it for years, both in simulation and with real capital, and I can tell you most beginners only scratch the surface. They click the buttons but miss the subtle settings that separate a well-planned trade from a hopeful guess. Let's fix that.

What You'll Learn in This Guide

How the Long/Short Tool Actually Works (Beyond the Buttons)

First, find it. It's in the toolbar at the top of your chart, often grouped with other "trading" tools like the "Buy/Sell Limit" order. The icon looks like a little arrow pointing up and down. Click it, and you'll see options for "Long Position" and "Short Position." So far, so good.

But here's the thing most tutorials don't stress enough: This tool is primarily for planning and simulation, not direct order execution (unless you have a connected broker). Its core function is to let you visually map out a trade idea on the chart and, crucially, calculate your risk and reward before you commit any money. You drag it on the chart to set your entry, stop-loss, and take-profit levels. The tool then automatically shows you the potential profit/loss, the risk-to-reward ratio, and the required position size based on your account risk.

Key Insight: Think of it as your trade's blueprint. You wouldn't build a house without a plan, and you shouldn't enter a trade without one either. This tool forces discipline by making you define your exit points upfront.

What the Tool Calculates For You (The Magic Numbers)

Once you place the tool, a label appears. This label contains the gold. It typically shows:

  • Entry Price: Your planned entry.
  • Stop Loss (SL): The price where you'll admit the trade is wrong.
  • Take Profit (TP): Your profit target.
  • Risk (R): The monetary amount you're risking per share/contract.
  • Reward: The potential monetary profit per share/contract.
  • Risk/Reward Ratio: The classic 1:2, 1:3, etc. A 1:3 ratio means you're aiming for $3 of profit for every $1 you risk.
  • Position Size: This is the big one. If you input your account size and risk percentage, it tells you exactly how many shares or contracts to buy/sell.

Step-by-Step: Placing Your First Trade with the Tool

Let's walk through setting up a long position on a hypothetical stock, ABC, currently trading at $150. I'll show you the exact clicks and, more importantly, the thought process.

Step 1: Activate and Choose Direction
Click the tool icon and select "Long Position." Your cursor changes.

Step 2: Plot Your Entry
Click on the chart at your desired entry price. Maybe you're waiting for a pullback to $148. Click there. This anchors your entry point.

Step 3: Drag to Your Stop Loss
Now, drag the cursor downwards to your stop-loss level. Let's say you won't hold if it breaks the recent low at $142. Drag and click there. You'll now see a vertical line connecting entry and stop-loss, with a label showing the risk per share ($148 - $142 = $6).

Step 4: Set Your Take Profit
Drag the cursor upwards from the entry to your profit target. Perhaps you're targeting a resistance zone at $166. Click there. The tool now displays a complete trade plan with all three levels.

Step 5: Input Your Account Details (The Critical Step)
Double-click on the tool's label or lines. A properties window pops up. Find the "Account" or "Position Sizing" section. Here, you input:

  • Account Size: Let's say $10,000.
  • Risk (% of Account): The single most important number in trading. A common rule is to risk 1-2% per trade. We'll use 1.5%. So, 1.5% of $10,000 is $150.

The tool performs this calculation: Position Size = Account Risk / Trade Risk per Share. In our case: $150 / $6 = 25 shares. The label will now update to show you should buy 25 shares of ABC at $148.

The Mistake I See All the Time: Traders skip the account input step. They see a 1:3 ratio and get excited, but without calculating position size, they have no idea if that trade risks $50 or $500 of their capital. Always fill this in.

Advanced Settings & Common Costly Mistakes

The basic setup gets you 80% there. The remaining 20% in the settings window is where pros separate themselves.

1. The "Price" Field is a Trap

In the properties, there's a "Price" field that defaults to "Close." This is subtle but vital. If you set your entry at $148 but this field is on "Close," the position size calculation uses the last closing price, not your $148 entry. If the current price is $150, your math is instantly off. Always set this to "Price" and manually ensure it matches your planned entry.

2. Ignoring Slippage and Commissions

The tool's profit/loss is theoretical. In reality, you pay commissions, and your stop-loss might fill at a worse price (slippage). While you can't model slippage perfectly, you can add a commission cost in the settings. Adding even a small $5 commission to our example trade changes the net profit. It's a good habit to keep your calculations honest.

3. Position Sizing Methods: Which One to Use?

The tool often offers different sizing methods. Here's a quick breakdown from my experience:

Method What It Does Best For
Risk-Based Calculates shares based on a fixed % of account risk (our example). Most traders. It directly manages your downside.
Quantity-Based You simply input the number of shares/contracts you want. Quick sketches, or if you have a fixed share strategy.
Capital-Based Allocates a fixed dollar amount (e.g., invest $2000). Portfolio balancing, where dollar allocation matters more than risk per trade.

I stick to risk-based sizing 99% of the time. It's the cornerstone of survival.

A Real Trade Example from My Log

Let me show you how this played out in a recent setup I took. It wasn't a winner, and that's the point—the tool protected me.

I was watching a forex pair, EUR/USD, consolidating. My analysis suggested a breakout long. I used the tool to plan:

  • Entry: 1.08500 (buy stop order above consolidation).
  • Stop Loss: 1.08200 (below the consolidation low). Risk per pip = 30 pips.
  • Take Profit: 1.09200 (near prior resistance). Reward per pip = 70 pips. Ratio ~1:2.3.
  • Account: $20,000. Risk per trade: 1% = $200.
  • Position Size: $200 / 30 pips = $6.67 per pip. In forex, this meant a position size of roughly 67,000 units (a mini lot). The tool calculated this instantly.

I placed the order with my broker exactly as planned. The price triggered my entry, moved up 20 pips, then reversed sharply. It hit my stop-loss at 1.08200. My loss? Exactly $200 (30 pips * $6.67), which was 1% of my account. I felt the sting, but no panic. The tool had defined the worst-case scenario, and I was prepared for it. Without that pre-calculated stop and position size, I might have moved my stop, turning a 1% loss into a 5% disaster.

Your Burning Questions Answered

Why does my simulated profit/loss in TradingView not match my broker's P&L?
Several reasons. First, check the "Price" field issue I mentioned—it's the top culprit. Second, brokers use spread (difference between buy/sell price), which TradingView's candle chart usually doesn't show. Your entry might be at the chart's bid price, but you actually bought at the higher ask price. Third, overnight financing costs (for CFDs, forex) and commissions. The tool gives a clean theoretical value; real-world execution adds friction.
Can I use this tool for crypto or futures on TradingView?
Absolutely. The math is universal. The key is understanding the contract specs. For a Bitcoin future, you need to know the contract value per $1 move. For crypto spot trading, it's straightforward per-coin risk. The tool works the same way—you input your account risk, it calculates how many contracts or coins to trade. Always double-check the value of a 1-point move in your asset.
What's the biggest mental block traders have with using this tool properly?
Admitting the stop-loss is correct. People use the tool, set a stop, but when price approaches it, they override the plan thinking "it'll come back." The tool's job is to give you a rational, unemotional plan based on your chart analysis. The trader's job is to execute it faithfully. The disconnect happens when emotion overrules the pre-defined logic. My rule is simple: if I want to move my stop, I must delete the tool drawing and re-analyze the chart from scratch. 90% of the time, the original stop was right.
Does the tool work on mobile?
Yes, but the interface is cramped. You can place the long/short tool and drag the points, but accessing the detailed properties menu for account sizing is more fiddly. I use the mobile app for monitoring and basic drawings, but I always do my serious trade planning and position sizing on the desktop platform where I can see all settings clearly.

The Long/Short Position tool is more than a feature; it's a framework for disciplined trading. It bridges the gap between a pretty chart pattern and an executable, risk-managed trade. Start by using it on every single idea in Paper Trading. Make filling out those account fields a non-negotiable habit. You'll find your trading becomes less about hoping and more about calculated execution. And that's where the real progress begins.

This guide is based on the official TradingView documentation and extensive personal trading experience. Chart and risk management principles are evergreen.