Is COST near its 200-week EMA?
No. COST is 20.5% above its 200-week EMA ($994.61 against $825.13, 4.6 weekly ATRs above) at the scan of 21 Oct 2026. Extended above the 200-week: price is more than four weekly ATRs above the 200-week EMA, in a rising long-term trend. It has not touched its 200-week EMA since the line could first be measured in Aug 2020 (324 weeks); the closest its weekly lows came was 7.8% above it, in Sep 2026. The 50-week EMA is $953.59 (price +4.3% from it) and the weekly DeMarker is 0.71, neutral.
What the numbers say
The 200-week EMA itself is up 42.4% over two years, a steep long-term climb. Weekly closes have been above the line on 100% of the 324 weeks measured, so a touch has been rare. The weekly DeMarker has risen from 0.39 four weeks ago to 0.71.
Every touch of the 200-week EMA since Aug 2020
From 324 weeks of weekly bars. A touch is a week whose low reached the 200-week EMA after 13 weeks above it. Each row shows how deep the lows went in the 13 weeks after, whether a weekly close fell below the line within four weeks, and where price closed 13 and 52 weeks later, against the EMA at the touch.
No fresh touch of the 200-week EMA since 10 Aug 2020. A touch counts when a weekly low reaches the line after 13 weeks whose lows all stayed above it.
Source: Yahoo Finance weekly bars, split-adjusted, read by the Trade Desk's Portfolio Builder scan twice a day. EMAs are exponential, as on TradingView. Open the weekly chart on TradingView.
How to read the 200-week zone
The Desk's Portfolio Builder reads three things together: the 50-week EMA above the 200-week, the 200-week EMA rising at least 8% over two years, and price within one weekly ATR of the 200-week line. COST does not meet all three right now: price is more than four weekly ATRs above the 200-week EMA, in a rising long-term trend. The weekly DeMarker adds the momentum read: at 0.71 it is neutral now. This is a long-term, no-leverage way of reading a chart, not a signal to act on.
The whole universe, scanned twice a day
The Portfolio Builder in the Desk reads 954 stocks, funds and coins against their 200-week EMA at the London and New York opens. The free section shows the Markets tab and the weekly letters.
Open the free section →FAQ
What is COST's 200-week EMA?
At the scan of 21 Oct 2026 the 200-week EMA was $825.13 and price was $994.61, 20.5% above it.
How many times has COST touched its 200-week EMA?
It has not touched its 200-week EMA since the line could first be measured in Aug 2020 (324 weeks); the closest its weekly lows came was 7.8% above it, in Sep 2026.
Is COST's weekly DeMarker oversold?
The weekly DeMarker (14) is 0.71, which is neutral: below 0.20 reads oversold, above 0.80 overbought, and anything between is neutral.
Is COST in a long-term uptrend?
Extended above the 200-week: price is more than four weekly ATRs above the 200-week EMA, in a rising long-term trend.