Vol Bubbles#

Marks bars whose volume is a statistical outlier against recent history with a circle sized by how extreme the spike is, and projects the biggest ones as price levels.

TODO: screenshot of Vol Bubbles, with outlier-volume circles on the bars.

What it shows#

For each bar, Vol Bubbles compares its volume against a rolling window of the last 200 bars and draws a circle on any bar whose volume is an outlier. The measure is robust, so a handful of spikes cannot hide the very anomaly it is meant to catch. Circles are green on an up-closing bar and red on a down bar, sized by how rare the spike is. The five strongest bubbles also project a dashed horizontal line at the bar's mid-price, tagged with a tier.

How to read it#

A bubble means unusually heavy participation printed on that bar relative to the last couple hundred bars. The color is the bar's direction, and the size is how extreme the spike was, so a big bubble is a rarer event. The projected dashed levels are the takeaway for later trading. They mark prices where a major volume event happened, which often act as support or resistance on a retest. Raise the threshold to keep only the rare spikes, or lower it to catch smaller bumps.

Settings#

• Anomaly threshold. How extreme a bar must be to draw a bubble. Lower is noisier, higher keeps only rare bursts.
• Max bubble size and Size by. Cap the circle size, and size each bubble by its rarity or by raw volume.
• Projected levels and volume numbers. Toggle the dashed retest levels and the in-bubble readouts.
• Bull and bear colors. The up-bar and down-bar colors.

Back to Indicators.