Finally, Trendlines Reinvented: Here’s How It Works

Trendlines have been part of technical analysis for decades, but drawing them has often involved a fair amount of guesswork. They’re easy to spot in hindsight and much harder to define with precision while the market’s still moving.

In this webinar, Trading Indicators Managing Partner Dr. Daniel Sinnig showed how to draw trendlines using objective, clearly defined criteria, which setups to watch for once they’re on your chart, and how looking across multiple timeframes changes what you see. He also demoed Trendline IQ, the Trading Indicators tool that plots trendlines automatically on NinjaTrader.

The approach is designed for day traders, scalpers, and swing traders alike.

Why trendlines matter

Markets spend a lot of time moving sideways, but according to Sinnig, the best setups and biggest moves tend to show up when a market is trending. Even then, price doesn’t travel in a straight line. It oscillates, stepping higher with higher highs and higher lows in an uptrend, or lower with lower highs and lower lows in a downtrend.

Those swings create visible boundaries. Connect the swing lows and you have a lower boundary; connect the swing highs and you have an upper one. That’s the core idea behind a trendline, and it’s useful for two reasons:

• Entries: In an uptrend, a pullback to the lower trendline can let you get into the trend at a better price, with a stop-loss order placed just below the line. Enter when price is extended far above the line, and that stop sits much farther away.
• Targets: The upper boundary, where the swing highs connect, can serve as a profit target.

When a trend is smooth enough that a parallel line connects both the lows and the highs, you get a trend channel. Sinnig noted that’s rare, since markets are seldom that symmetrical.

Drawing trendlines with objective, clearly defined criteria

Two points aren’t enough

You can always draw a straight line through any two swing lows or swing highs; that’s just math. Sinnig’s first rule: A trendline isn’t established until price comes back for a third touch. Two points are a draft. The third touch is the real test.

Choose your anchor points and stay consistent

Should you connect the wicks, the candle lows, or the candle bodies? In Sinnig’s view, there’s no single right answer, as long as you apply the same rule every time. The common mistake is adjusting a line after the fact so it fits where price is right now. That’s essentially optimizing on historical data that may not hold up going forward. Whether you draw trendlines by hand or use a tool, the rules should be objective and set in advance, not bent later.

Where manual drawing breaks down

To show the process, Sinnig drew trendlines by hand on a 5-minute Russell 2000 futures chart. He marked swing points, connected them, and found a line that price later broke above, came back to retest as support, and eventually broke below with follow-through.

Real charts are messier than textbook examples, though. When he moved to higher timeframes, a whole new set of lines appeared, and the chart quickly got cluttered. Repeating that across every timeframe and every symbol, every morning, isn’t sustainable. Sinnig said he believes that’s why trendlines often get taught in theory but rarely get used in practice when drawn by hand, and he no longer draws them manually himself.

Multitimeframe trend analysis with Trendline IQ

Finding swing points and connecting them is tedious but simple, which makes it a good job for an indicator. Just as important, a tool applies identical logic on every chart. That led Trading Indicators to build Trendline IQ, which is available for NinjaTrader.

Weighted trendlines from four timeframes

Once applied, Trendline IQ draws detected trendlines from four timeframes and gives more weight to lines from higher timeframes, since those tend to be more significant. Ascending lines are blue and descending lines are red.

At first glance, the result can look busy. Sinnig acknowledged that, explaining that the indicator isn’t after picture-perfect lines drawn in hindsight. It shows what he calls “honest” trendlines, which he says have more value going forward.

On a 5-minute chart of Nasdaq futures (MNQ), Sinnig pointed to a confluence bounce: After breaking above one trendline, price pulled back to the intersection of a steeper and a less steep ascending trendline, with both potentially acting as support, then continued higher.

Changing the structure reference timeframe

By default, Trendline IQ uses the chart’s own timeframe as its starting point. Change the structure reference timeframe setting (e.g., from the chart’s 5-minute timeframe to 15-minute), and the indicator recalculates from that higher timeframe. On the MNQ chart, that cleared out the lower-timeframe lines, including the confluence point, for a cleaner view.

Filtering out countertrend lines

The Trend Alignment Filter addresses a question from the audience: What if you don’t want to consider lines that run against the bigger trend? On a 5-minute micro Bitcoin futures chart in a clear uptrend, turning on the filter removed a descending trendline, leaving only lines aligned with the overarching trend.

Other settings let you pick the timeframes, let older trendlines decay so recent ones stand out, choose which signals appear, and adjust colors.

Spotting wick sweeps, trendline breaks, and lifelines

Because Trendline IQ knows where each line is, it can flag specific events as price interacts with them.

Wick sweeps

A bullish wick sweep happens when price wicks below a trendline but closes back above it; a bearish sweep is the reverse. Some traders call this a fakeout. In Sinnig’s experience, it often signals trend continuation, and it’s one of his favorite entries to trade. On the Russell 2000 chart, he walked through a series of bullish sweeps, each followed by a bounce.

Trendline breaks and retests

A trendline break happens when price closes beyond the line, which often points to a possible reversal. Traders taking the contrarian side might, for example, look for a short after price closes below a rising trendline. On the Russell 2000 chart, a break above a descending trendline led to a breakout move. Price then pulled back almost exactly to the broken line, printed another wick sweep, and moved higher.

Lifelines

Unlike sweeps and breaks, which Sinnig describes as potential entry moments, a lifeline is for when you’re already in a trade that’s gone against you. It flags that the larger structure is still in place, so it may not be time to give up on the trade yet. Lifelines appear as small dots on the chart. In one example Sinnig shared, bearish lifelines appeared while price moved against a short position, and price later continued in the bearish direction.

The signals table

Trendline IQ also includes a signals table that summarizes the most recent signals and shows how each would have performed, measured in multiples of average true range (ATR). Blue values mean a signal would currently be in profit; red means it would be at a loss. Sinnig stressed these results are theoretical, but he likes to see mostly blue values in the table.

He was also clear about the limits. These signals don’t always work out, and no tool can predict the market perfectly. He sees trendlines as one more tool that can add insight to your analysis, not the only one in your toolbox.

Alerts and scans that watch the charts for you

Markets spend long stretches in what Sinnig called “no man’s land,” and waiting for price to reach a pivotal trendline can take a while. Rather than staring at charts, you can rely on Trendline IQ’s alerts and predefined scans, which are available on every platform it supports. In NinjaTrader, it ships with Market Analyzer templates.

During the live demo, the scanner flagged a bullish wick sweep on Microsoft on the 5-minute timeframe, which Sinnig confirmed on the chart, plus a bearish break on UnitedHealth. The idea is to let the tool surface the moments that matter so you can save your mental energy for the actual decision: take the trade or stay on the sidelines.

From the Q&A

When does the indicator start plotting a trendline?

Only after the line is confirmed. Trendline IQ waits until a trendline connects at least three swing points before it draws it.

Does Trendline IQ work on any timeframe?

Yes. It works whether you’re trading futures on a 1-minute or 5-minute chart or stocks on a daily chart.

Can alerts tell you when to exit a scalp?

You can set alerts for any of the events the indicator detects. If you’re long, for example, a bearish wick sweep near an upper trendline that may be acting as resistance could be a reason to consider getting out. How you combine those alerts to manage a trade is up to you.

Watch the full session

Sinnig walks through every chart example, setting, and signal in the recorded session. Watch the full webinar on YouTube.