The 50-day average, in plain English
The definition, as the app uses it
50-day average: a faster trend line. Dropping below one it held = "breaking support."
Fifty trading days is about ten weeks. Averaged over that stretch, the line reacts to a new trend sooner than the 200-day average does — which makes it the earlier, twitchier signal of the two. The app shows both: the 50-day for what has been happening lately, the 200-day for the long-term drift underneath it.
Because the faster line sits closer to the price, prices cross it far more often. A cross is information, not an alarm — it says the recent stretch has changed direction, and the slower 200-day line is the check on whether the change is deep or just weather.
Worked example — illustrative figures only, not a real asset
A stock has held above its 50-day average — an example $50 — for two months, bouncing near it twice. It then closes at an example $47. That is what "breaking support" describes: not the size of the fall, but the fall through a line the price had been respecting.
Related: The 200-day average · Support · All glossary terms
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Last reviewed: November 8, 2026
Portfolio Sweep never gives buy or sell calls. It describes what prices are doing — trend, momentum, how it compares to the market — so you can learn and decide for yourself. You don't trade inside Portfolio Sweep. This page is education, not investment advice.