The trade looked clean going in. VI+ had just crossed above VI-, the textbook buy, so you took it. Two candles later the lines crossed back, then again, then again, and you were left holding a position the indicator no longer supported while price chopped sideways. Nothing was trending. The crossover you acted on was real, and it was also worthless, because the market it fired in had no direction for it to catch.
That is the whole problem with a directional trend tool: it is honest about who is winning right now, and dangerously quiet about whether “right now” means anything. By the end of this guide you will be able to read the Vortex crossover for what it is and tell a shift in control that is worth trading from one that is just noise in a range.
Key Findings
- Two lines, one question: VI+ measures the pull of rising price and VI- the pull of falling price, so the line on top tells you which side is winning the move.
- The crossover is the signal: VI+ over VI- leans bullish and VI- over VI+ leans bearish, with the gap between them showing how one-sided control is.
- Ranges are its weakness: when price goes nowhere the two lines cross constantly, which is exactly where the Vortex fires its worst false signals.
- A clean Vortex does not repaint: each value locks at the candle's close, so a crossover that only appears after a reload was never tradeable.
What does the Vortex Indicator actually measure?
The Vortex Indicator measures the tug-of-war between upward and downward price movement, then plots the winner as two competing lines. VI+ looks at how far each candle’s high pulls away from the prior candle’s low, which captures upward force. VI- looks at how far each low pulls away from the prior high, which captures downward force. Both are smoothed over a lookback, usually 14 candles, and scaled by the true range of the move so a quiet market and a volatile one can be read on the same footing.
The result is two lines that answer a single plain question: is buying or selling doing more work right now? When VI+ rides above VI-, upward movement is winning and the read is bullish. When VI- takes the top, sellers have control. The bigger the gap between the lines, the more decisive that control is. A strong trend looks like one line pulling clear of the other and staying there. A directionless market looks like the two lines braided together in the middle, swapping the lead every few candles and committing to nothing.
The indicator is newer than most on a trader’s chart. It was published by Etienne Botes and Douglas Siepman in the January 2010 issue of Technical Analysis of Stocks and Commodities magazine, and the calculation is documented by StockCharts ChartSchool if you want the exact arithmetic. For trading it, the idea is what matters: the Vortex times which side is setting the tone.
How do you read the VI+ and VI- crossover?
The headline read is the crossover, and the crossover alone is the weakest way to use it. VI+ crossing above VI- says upward movement has just taken control of the lookback, with VI- crossing above VI+ warning the other way. Some platforms label these events a buy signal and a sell signal outright. They are context, not complete orders. Inside a trading range the lines can cross every few candles, producing a stream of signals with no follow-through behind any of them.
The stronger read waits for separation. A genuine trend does not just cross the lines, it pulls them apart and keeps them apart. When VI+ jumps above VI- and the gap widens candle after candle, buyers are not just ahead, they are extending their lead. When the lines cross and immediately squeeze back toward each other, that is a market rejecting the move, and acting on the first touch is how you collect whipsaws.
Whichever way you read it, the crossover names a shift in who is winning. It does not name the candle to enter on, and in a flat market it will name shifts that reverse before you can act. Wait for price to confirm with a break of structure before you commit. The early-but-noisy nature of the Vortex is the classic leading-indicator trade-off we mapped in leading vs lagging indicators : it warns sooner, so it also cries wolf more.
Vortex vs ADX vs a moving average crossover: what is the real difference?
Stand the Vortex next to two other trend tools and the trade-offs get clear. The Vortex is directional and fairly quick. ADX is direction-blind but steadier. A moving average crossover is the slowest of the three and the most forgiving of chop.
| Factor | Vortex Indicator | ADX | MA crossover |
|---|---|---|---|
| What it reads | Pull of highs vs lows | Force of the move | Fast average vs slow average |
| Carries direction | Yes (VI+ vs VI-) | No (needs +DI / -DI) | Yes (which average is on top) |
| Standard lookback | 14 periods | 14 periods | Varies (e.g. 50 / 200) |
| Speed of signal | Fairly early | Confirming, slower | Slow, lagging |
| Best at | Catching a shift in control | Confirming trend strength | Filtering out noise |
| Weak in | Choppy, rangebound markets | Calling direction | Late entries, sharp reversals |
The practical takeaway: the Vortex raises its hand early, which is useful and also why it needs a second opinion. We pulled apart what ADX does and does not tell you in the ADX indicator guide , and the two pair naturally. Let the Vortex flag the shift in control, and let ADX confirm the move actually has force behind it before you treat the crossover as a trade.
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Get RelicusRoad ProWhere does the Vortex Indicator fail you?
Honesty about a tool’s weak spots is worth more than another list of its strengths. The Vortex has one real failure mode, and it accounts for most of the losing signals traders take from it. In a sideways market the two lines cross constantly, and each cross looks exactly like the start of a trend that never comes. Because the indicator is quick, it reacts to every small push, so a market that is doing nothing generates a steady drip of crossovers that reverse within a few candles.
That is not a flaw to fix, it is a limit to respect. The Vortex is a trend tool, and it is only trustworthy when there is a trend to read. The defense is a filter: a range check like ADX, a look at whether price is actually breaking structure, or simply refusing to trade crossovers that happen while price is stuck between the same two levels. An indicator can sharpen your timing on a real move. It cannot manufacture a trend that the market is not offering, and asking it to is how a good tool earns a bad reputation.
Does the Vortex Indicator repaint?
A correctly built Vortex Indicator does not repaint. The values it depends on, the pull of each high and low against the prior candle, are fixed the moment each candle closes, so the historical lines lock in place and do not redraw later.
The live reading can shift while the current candle is still forming, because a new high or low on that candle changes the calculation in real time. That is expected, and it is not repainting. What you watch for is a crossover from yesterday quietly relocating after you reload the chart, because that means the tool is reaching into data it should treat as final. A crossover that only shows up once you refresh was never tradeable. We broke this trap down fully in the non-repaint forex indicator guide , and the check is the same on any indicator: mark a past crossover, reload the chart, and confirm it has not moved a candle.
How does RelicusRoad Pro fit with trend tools like the Vortex?
RelicusRoad Pro is built so you are not eyeballing the Vortex, an ADX line, and price structure at once and trying to reconcile three reads under pressure. It weighs directional pull alongside strength and structure, and it commits each signal at the candle’s close, fixed there, on the non-repaint side of the line above. The same logic runs across MT4, MT5, and TradingView, so a read you trust on one platform is the read you get on the next. If you are comparing where a directional tool sits among the rest, the best trading indicators guide lays out the field.
None of that is pitched as press-the-button trading, and that is on purpose. A trend tool can tell you which side is winning and whether the move is being extended. It cannot tell you the idea was sound to begin with, or fix sizing that is too large for your account. That part stays with you. What it removes is the reflex to trade every crossover the moment it prints, whether or not there is a trend underneath it.
Frequently asked questions
What is the Vortex Indicator? The Vortex Indicator is a trend tool that plots two lines, VI+ and VI-, to show whether upward or downward movement is winning over a chosen lookback, usually 14 candles. VI+ measures the pull of rising price by comparing each candle’s high to the prior low, and VI- measures the pull of falling price by comparing each low to the prior high, both smoothed by the true range of the move. When VI+ sits above VI-, buyers are in control; when VI- leads, sellers are. It was published by Etienne Botes and Douglas Siepman in the January 2010 issue of Technical Analysis of Stocks and Commodities magazine.
What is the difference between the Vortex Indicator and ADX? Both read trend, but they answer different questions. The Vortex is directional out of the box: its two lines tell you which side is winning and you trade the crossover. ADX is direction-blind: it gives you one line that measures how forceful a move is, and you read direction from its separate +DI and -DI lines. The Vortex tends to flag a shift in control a little sooner, while ADX is steadier about confirming a move already has strength behind it. Many traders run the Vortex for the turn and ADX for the confirmation.
What are the best Vortex Indicator settings? A 14-period lookback is the value the original authors used and the common platform default. A shorter setting such as 9 reacts faster but produces more false crossovers in choppy conditions, while a longer setting smooths the lines and lags more. Test the length against your timeframe and market rather than assuming one number is best everywhere. Faster is not better if it doubles your whipsaws.
Does the Vortex Indicator repaint? A correctly built Vortex Indicator does not repaint. It is calculated from completed candles, so once a candle closes its VI+ and VI- values are fixed and the historical lines do not move. The current, still-forming candle can shift the live reading until it closes, which is normal and not repainting. If a past crossover relocates after you reload the chart, the tool is built wrong, and any signal resting on it would look flawless in a back-test and fail in live trading.
How do you trade a Vortex crossover? The classic read is VI+ crossing above VI- as a sign upward movement has taken control, with the mirror for a downtrend. A stronger version waits for the lines to separate rather than acting on the first touch, since a wide gap shows genuine control instead of a brief cross inside a range. Treat the crossover as context that improves timing, confirmed by price breaking structure, not as a standalone trigger. In a flat market the crossover will lie to you repeatedly.
The Vortex will not tell you a trend is coming. It tells you which side is winning right now, and it is only worth trusting when there is a real move for it to read.
See how RelicusRoad Pro reads trend direction and structure together →