Almost every market screener, including UpTicker, ranks assets by percentage change. It is a simple number, but it is easy to misread. This guide explains how it is calculated, what it can tell you, and the things it does not show.
A percentage gain compares today's price with a reference price, usually the previous close. If a stock closed yesterday at $2.00 and trades at $2.30 now, the gain is 30 cents divided by $2.00, which is 15 percent. The same 30-cent move on a $20 stock would be only 1.5 percent. That is why percentage change, rather than dollar change, is used to compare assets of different prices.
The same asset can show very different numbers depending on the window. A stock might be up 12 percent since yesterday's close but down 3 percent over the past week. Always check what period a list covers. On UpTicker the stock list reflects the past 24 hours, while the crypto list uses a one-hour window because crypto trades around the clock and short-term moves are what that section is designed to highlight.
A 40 percent gain on a few hundred shares traded is a very different event from a 40 percent gain on millions of shares. High volume suggests that many participants agree on the new price. Very low volume means the price may be set by a few orders and could reverse as soon as someone wants to sell. If a data source shows volume, look at it next to the percentage.
A price jump can follow genuine news, such as earnings, an approval, or a major contract. It can also follow rumours, social media attention, or simply a thinly traded stock being pushed around. The number alone cannot tell you which. Reading the company's announcements and filings is how you find out.
A common beginner mistake is to assume that a stock that rose strongly today will keep rising. Sometimes it does. Often it gives back part or all of the move. Momentum is a real, studied effect in markets, but it is statistical and unreliable on any single stock, and it tends to be weakest and riskiest in the smallest, least liquid names.
Percentages are not symmetrical. A stock that falls 50 percent must rise 100 percent to get back to where it started. This is one reason volatile assets can be dangerous: the arithmetic of losses works against you. Knowing this helps explain why many experienced investors size their positions small in speculative assets.
Used carefully, a daily percentage gain is a good way to find things worth examining. It is not a verdict on whether something is worth owning.