Up-day volume versus down-day volume (U/D VOL)

A fifty-day count of shares traded on up days against down days, and why it separates real buying from a bounce.

What it is

Add up the shares traded on the days a stock closed higher. Then add up the shares traded on the days it closed lower. Use the last fifty trading days. If more shares changed hands on the up days, buyers have been the more aggressive side for two and a half months. That holds whatever the price chart looks like day to day.

How Breakaway uses it

U/D VOL fires when up-day volume beats down-day volume over the last 50 trading days. Once lit, it stays lit until up-day volume falls under 85 percent of down-day volume. It is a volume check and one of the four the card labels predictive. It describes a condition that builds before a move rather than the move itself.

U/D VOL, on a stock's page
Lit on the Score tab beside the other 13 checks, its rule a tap away.
Up days and down days
Each volume bar takes its day's color, green up and red down.
Why a stock ranks
Its Quality Score, its rank, and the reasons behind it, on one card.
CEOs buying their own stock
Every CEO buy, biggest names first. Sort, filter, save the list, and set optional alerts.
Congress trades
A member's trades, newest first, each with its amount. Sort and filter the whole list.
The score, added up
Price action, the company, and signals, each with its points, summed into one number on every stock's page.
Earnings, week by week
Who reports each day, and how each stock took its last four reports.
FDA dates, counted down
Each date in the company's words, its cash against the date, and an optional alert before it.
The market map
Every stock a box, colored by its Quality Score.
Themes, ranked live
Each theme's stocks ranked by Quality Score, live. Here, AI chips.
The top 10, every day
The ten highest Quality Scores at each close, kept day by day, week by week.
Optional alerts, your way
Pick a stock, a score, a price, a filing, or a whole scan. It tells you by push or email.
Your watchlist, scored
Your stocks by Quality Score, today's move, or name.
On your phone and your laptop
The same account and watchlist on both, each laid out for its screen.

How to read it

The check is quiet by nature, and it is rarely the reason you notice a stock. Its value is in backing up or contradicting the others. A breakout with U/D VOL lit has weeks of steady buying behind it. A breakout with U/D VOL dark is running on one day's excitement. That is a different bet.

Up-day volume versus down-day volume (U/D VOL)

What it is

How Breakaway uses it

How to read it

U/D VOL on real stocks today

Related

See U/D VOL on every stock, live