Scalping Systems / System 11

COIN 3-minute RSI reversion scalping system

The site's second RSI-based system, built on the same idea as the AMD system: read price against momentum instead of price alone. Coinbase moves faster and further per bar than AMD does, so this version runs a 9-period RSI on a 3-minute chart, a couple bars slower than AMD's 7-period reading, built to filter out some of the extra chop a name this volatile throws off. Charts below are interactive. Click Play on any setup and watch the signal bar fire, the RSI line underneath it light up at its own reading, then the entry, stop, and target draw themselves, computed live from the actual candle.

Jason Parker, founder of TradeScalping.com, pointing at the rule that matters most on this page
“Loosening the entry rule because RSI looks extreme is how this system's edge disappears fastest, on COIN more than anywhere else on this site.”
Jason Parker · Founder
InstrumentCOIN
Chart3-minute
Indicator9-period RSI
Target$0.25 min
BrokerAny DMA broker
ExecutionHotkeys, RSI overlay

Some words, explained first

A handful of terms show up again and again below. Click one to see what it means.

Two phrases you'll see on every setup

Long entries

"Buy the close"

Wait for the signal bar to close, then buy if price on the next bar trades one tick above the signal bar's high. The close confirms the signal. It isn't your entry price.

Short entries

"Sell the close"

Wait for the signal bar to close, then sell if price on the next bar trades one tick below the signal bar's low. The close confirms the signal. It isn't your entry price.

Stop and target: the same rule, an eighth time

Same math as every other cent-priced system on this site. The stop sits one tick past the far side of the signal bar. The target sits half that bar's range away from entry. The threshold reversal setup below runs an $0.85 signal bar, for an entry near $258.21, a stop near $257.34, and a target near $258.63. What changes on a faster name like COIN isn't the formula. It's the RSI filter sitting on top of it: how long the reading has already sat past 30 or 70 before this bar, not just where it sits right now. A signal bar that fires the moment RSI first tags 30 is a different trade than one that fires after RSI has already sat under 30 for six bars straight, even though the entry, stop, and target come out the same either way.

The win rate you actually need

Play with the numbers below. The default reflects the threshold reversal setup's own risk to reward.

≈70% is the honest break-even line once spread and slippage are priced in, not the raw number the math alone gives you. ≈80% is doing well. ≈90% is among the best scalpers running a system like this.

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What counts as a signal bar here

Same four jobs as the AMD system, run against a faster clock. A threshold reversal bar closes back through 30 or 70 near its own high or low, right after RSI first tagged the line. A failure swing bar breaks the high or low set on RSI's own bounce, after a second dip that held short of the extreme instead of re-testing it. A divergence bar closes back against a fresh price extreme that RSI never confirmed, wicking through the new high or low and giving it back. A centerline bar resumes the prior trend after RSI pulled back to 50 and held, instead of breaking through it. Four different jobs. Same math once the bar closes: entry one tick past its own high or low, stop one tick past the far side, target half the range.

One honest note before the setups. RSI is a derivative of price, not a lead on it: by the time a bar closes back through 30 or 70, part of the move it's confirming has already happened. COIN can rip through both lines two or three times in a single morning, so a bare threshold cross by itself isn't a trigger here more than anywhere else on this site. It's a filter that still needs the actual signal bar to close where the rule says. The checker below is the other half of that filter: how long RSI already sat past the line before this bar, which is what separates a normal stretch from a trend too strong to fade.

Check where RSI has actually been before you trust the reversal

Same threshold, three different histories behind it. Click through and watch the verdict flip.

FRESH DIP: VALID SETUP

Illustrative examples built to test RSI persistence, not the setup itself. Not historical COIN prices or RSI values. The 30/70/4-bar marks are a rule of thumb, not a law anyone enforces.

The four setups

Click Play on any of these

Each chart shows the setup forming, with the RSI reading plotted under every candle. Hit Play and the signal bar fires, its RSI point turns amber against the 30/70 zone lines, then the entry, stop, and target draw in, computed the same way you'd compute them live, straight from the signal bar's own high, low, and close.

Setup 01

RSI Threshold Reversal

The pattern: RSI tags an extreme for the first time in a while, then the very next bar closes back on the other side of that line near its own high or low.

Long: RSI dips to 30 or below, then a green bar closes back above 30 near its own high. Buy the close.

Short: mirror this to the downside: RSI tags 70 or above, then a red bar closes back under 70 near its own low. Sell the close.

Action
Entry
Stop
Target
Setup 02

RSI Failure Swing

The pattern: RSI dips past 30, bounces, pulls back a second time but holds above 30 instead of re-breaking it, then breaks the high RSI set on the bounce. The failed second dip is the signal, confirmed once price also breaks the level it set on that same bounce.

Long: after a higher RSI low holds above 30, a bar closes above the intervening price high near its own high. Buy the close.

Short: mirror this to the downside: a lower RSI high holds below 70, then a bar closes below the intervening price low near its own low. Sell the close.

Action
Entry
Stop
Target
Setup 03

RSI Divergence Fade

The pattern: price prints a fresh extreme that RSI does not confirm, a lower RSI high against a higher price high, or a higher RSI low against a lower price low, then a bar wicks through the new extreme and closes back against it.

Short: price makes a higher high, RSI prints a lower high than its own prior peak, and a bar wicks above the new high before closing back down near its own low. Sell the close.

Long: mirror this to the downside: a lower price low against a higher RSI low, wicking below before closing back up near its own high. Buy the close.

Action
Entry
Stop
Target
Setup 04

RSI Centerline Continuation

The pattern: the one setup here that trades with the trend instead of against it. RSI pulls back toward 50 during a trend, holds it instead of breaking through, then a bar resumes the original direction and closes near its own high or low.

Long: in an uptrend, RSI pulls back to 50 or just above and holds, then a green bar resumes and closes near its high. Buy the close.

Short: mirror this to the downside: in a downtrend, RSI pulls back to 50 or just below and holds, then a red bar resumes and closes near its low. Sell the close.

Action
Entry
Stop
Target

RSI tells you a move might be stretched. It doesn't tell you the reversal holds. A threshold cross can fire and stop out ten seconds later anyway, same as any other signal bar on this site, and COIN can do it faster than most. Loosening the entry rule because RSI looks extreme is how this system's edge disappears fastest. Run your own numbers in the position-size calculator, or head back to risk management for the account-level rules that sit underneath every system on this site.

COIN RSI scalping FAQ

Common questions about trading this specific system, answered straight.

What is the COIN 3-minute RSI scalping strategy?

It's a 3-minute Coinbase system built around a 9-period RSI, one step slower than the site's AMD system's 7-period reading, meant to filter out some of the extra chop a name this volatile throws off. The same four setups apply (threshold reversal, failure swing, divergence fade, centerline continuation), each sharing the same entry, stop, and target math once a signal bar closes.

Why does COIN use a 9-period RSI instead of AMD's 7-period?

Coinbase moves faster and further per bar than AMD does, so this version runs a slightly slower RSI reading on a 3-minute chart. The formula and the entry, stop, and target math don't change. What changes is the filter sitting on top of it: how long RSI has already sat past 30 or 70 before this bar, which matters more on a name that can rip through both lines two or three times in a single morning.

Is RSI scalping riskier on COIN than on AMD?

The page is direct about this: a threshold cross can fire and stop out ten seconds later on any signal bar on this site, and COIN can do it faster than most. Loosening the entry rule because RSI looks extreme is how the system's edge disappears fastest, on COIN more than anywhere else here, which is exactly why the RSI persistence checker on this page exists.