How to Use the Vortex Indicator in Crypto, and Does It Work?

You use the Vortex Indicator by watching two lines, VI+ for upward movement and VI- for downward movement, and reading a cross between them as the start of a trend. VI+ above VI- marks an uptrend and VI- above VI+ a downtrend. Etienne Botes and Douglas Siepman introduced it in 2010, and its usual setting is 14 bars.

Across 44 crypto perpetuals on Phemex from March 2024 to early November 2026, a bullish Vortex cross was followed by a higher close ten days later 42.4% of the time. Ordinary days of the same size on the same coins did slightly better, at 43.1%, so the cross added nothing we could measure. Nearly three in four bullish crosses came on a day the coin had already closed higher.

What Is the Vortex Indicator in Trading?

The Vortex Indicator is a trend tool made of two lines. ChartSchool describes it as "two oscillators that capture positive and negative trend movement," one built from how far buyers pushed price up and one from how far sellers pushed it down. Both lines swing above and below 1, and the one on top tells you which side moved price further over the last 14 bars.

ChartSchool says Botes and Siepman drew on the work of Welles Wilder, whose influence shows in the math, since the indicator borrows his true range to measure volatility.

Because one line always sits above the other, the indicator always has a side, which ChartSchool calls "a clear bullish or bearish bias."

A lean shows up even on a flat, quiet chart, so the side alone tells you little. That's why the readings below wait for a cross or a level.

How Does the Vortex Indicator Work?

The Vortex Indicator formula compares each bar with the one before it, then scales the result by volatility. ChartSchool divides it into three parts, laid out below as five steps.

1. Measure upward movement (+VM), the distance between the current bar's high and the previous bar's low.

2. Measure downward movement (-VM), the distance between the current bar's low and the previous bar's high.

3. Measure the true range, the largest of the bar's own high-to-low span and the gaps between the previous close and the bar's high and low.

4. Add up each of the three over the last 14 bars.

5. Divide the upward sum by the true-range sum to get VI+, and the downward sum by the same total to get VI-.

In plain words, a high that runs far above the previous bar's low means buyers reached further, and VI+ grows. A low that drops far below the previous bar's high means sellers did, and VI- grows. Dividing both by the true range puts a quiet coin and a wild one on the same scale.

The true range is the same building block behind the average true range, which traders use to set stop-loss and take-profit levels from Bitcoin's daily range.

Each bar counts in the sums for exactly 14 bars and then drops out. A big day can push a line up when it arrives and pull it back down 14 bars later, when it leaves, with nothing new happening that day.

How Do You Read the Vortex Indicator?

The simplest reading is the cross. ChartSchool treats VI+ moving above VI- as a bullish signal and VI- moving above VI+ as a bearish one, and it calls the trend up for as long as VI+ stays on top.

ChartSchool also offers two levels to cut down false starts. In its bullish version VI- first weakens below 0.90 and VI+ then strengthens above 1.10, and the bearish version runs the other way. Those levels weren't part of our test.

When both lines hover near 1, the trend is unclear and crosses come quickly. On Bitcoin's daily chart on Phemex, more than half the gaps between one cross and the next lasted five days or fewer.

One Bitcoin cross shows how the 14-bar window can fool you. In late October 2026 the daily chart showed VI+ climbing above VI-, to about 1.02 against 0.97, on a day Bitcoin closed about 3.2% lower. A heavier down day from early October had just dropped out of the sums, and it took more off the downward total than the new day put on.

The lines crossed back the next day. Ten closes after the cross, Bitcoin stood about 3.8% lower, a failed signal of the kind that stop-loss and take-profit orders in crypto trading are built to cap.

Is the Vortex Indicator Good?

It's good at describing a trend and poor at timing one. We counted every bullish cross at the daily close on those 44 perpetuals, each from March 2024 or its later listing date, and checked the close ten days on.

The window was hard on buyers. Only 43.9% of all days on those coins led to a higher close ten days later, so 50% is the wrong yardstick.

A fairer test compares the cross with same-size days. We split each coin's daily moves into tenths and matched every cross with that coin's no-cross days in the same tenth. Those same-size days saw a higher close 43.1% of the time, against 42.4% after a bullish cross. Only 47.5% of crosses beat the median of their matched same-size days.

The reason shows on the day of the cross. About four in ten bullish crosses came on one of the coin's biggest up days, its top fifth of daily moves, and the typical cross day rose about 1.9%. By the time the lines crossed, the move had mostly happened.

Bearish crosses did a shade better than their same-size days, 56.7% lower against 55.1%, still far short of the five-point margin we set before counting. At five days the bullish cross again trailed same-size days, and at twenty it led by under a point.

Bitcoin alone told the same story. Of its 55 bullish crosses, 28 saw a higher close ten days later, about 51% against about 50% for any Bitcoin day.

Botes and Siepman's article set out trading rules for a Vortex Indicator strategy, and our count used the plain cross alone. It had no stop or exit and no fees or funding, and its ten-day windows overlap. Our view is that the cross works as a trend label and needs a second reason before it becomes a trade.

Vortex Indicator vs DMI: What Is the Difference?

The Directional Movement Indicator (DMI) is Welles Wilder's older pair of lines, +DI and -DI, from his 1978 book New Concepts in Technical Trading Systems. Both indicators split price movement into an up line and a down line and divide by the true range, and a cross means the same thing on each.

They differ in what they compare. ChartSchool's ADX page spells out Wilder's rule for the up line. "+DM then equals the current high minus the prior high, provided it is positive," and only the bigger of the two moves counts on each bar. The Vortex Indicator measures from each high to the previous bar's low and from each low to the previous bar's high, and it keeps both every bar.

The averaging changes how each one forgets. A bar leaves the Vortex sums after 14 bars, which is how the late-October cross above happened, while Wilder's smoothing keeps a fading trace of every earlier bar. ChartSchool notes it can take around 150 periods of data to get true ADX values.

If you want a reading on trend strength, DMI comes with ADX. If you want lines that react to the last 14 bars and nothing older, the Vortex Indicator is the simpler build.

How Do You Add the Vortex Indicator to a Phemex Chart?

Phemex's futures chart has the Vortex Indicator built in, and its default setting is the same 14 bars our test used.

6. Open the BTC/USDT futures chart and switch the timeframe to D, the daily bars behind our count.

7. Click the Indicators button above the chart, search for "Vortex" and add the Vortex Indicator.

8. Open its settings from the "VI 14" label and check that Period reads 14.

9. Read the panel under the price chart at each daily close, where VI+ draws in blue and VI- in red.

10. Mark where a trade would be wrong before you act on a cross, since the cross itself arrives after the move.

A cross on the daily chart only counts once the bar has closed. Until then the lines can cross and uncross as price moves through the day, which is why our count used closes only.

You can also try a Vortex routine with no money at stake, then follow a risk roadmap from paper trading to live futuresbefore you add leverage.

Futures use leverage, and a leveraged position is closed automatically if losses push its margin below a set minimum. That forced close is a liquidation, and it's worth knowing what liquidation is and how to avoid it before a cross tempts you into size.

Frequently Asked Questions

What are the best Vortex Indicator settings?

Fourteen bars is the usual setting, and ChartSchool's own chart examples also use 23 and 26 periods. ChartSchool says a shorter setting is more sensitive and crosses its levels more often. We tested only 14 on daily bars, so we can't point to a measured best.

Who created the Vortex Indicator?

Etienne Botes and Douglas Siepman created it, and their article "The Vortex Indicator" appeared in the January 2010 issue of Technical Analysis of Stocks & Commodities.

Can you use the Vortex Indicator on its own?

ChartSchool says it is "not designed as a standalone indicator" and pairs it with price patterns and other analysis. Our count points the same way, since a bullish cross alone did no better than an ordinary day of the same size on the same coin.

Bottom Line

A Vortex cross is a receipt for a move that has already happened. Across these 44 coins, the ten days after a bullish cross went no better than the ten days after any other day of the same size.

That leaves the indicator one job it does well, telling you which side has controlled the last 14 bars. The entry and the exit have to come from somewhere else on the chart.

Disclaimer: This article is for informational purposes only and is not financial advice. Cryptocurrency trading involves substantial risk. Always do your own research before making investment decisions.