Costco Wholesale Corp (COST) stock chart and technical analysis

Indicator summary: Bearish (0 bullish, 4 bearish, 1 neutral). As of 2026-09-18, the close was $895.31: 4.4% below the 50-day average and 6.6% below the 200-day average, which is rising. RSI (14) is 36, in its neutral range. MACD is bearish. The stock sits 22% of the way up its 52-week range of $840.35 to $1,094.78, on 2.1x its 20-day average volume.

Indicator	Reading	Read
50-day average	$936.25	Price 4.4% below
200-day average	$958.24	Price 6.6% below, average rising
50 vs 200-day	50 below 200	Death-cross alignment
RSI (14)	36	Neutral range
MACD (12, 26, 9)	-13.89 vs -10.98	Line below signal
52-week range	$840.35 to $1,094.78	22% of the way up the range
Volume vs 20-day average	2.1x	Heavy

What followed this setup for COST

When it closed below its 200-day average (1,603 days), it was higher 63 trading days later 74% of the time, median +7.5%.
When it closed below its 50-day average (2,427 days), it was higher 63 trading days later 70% of the time, median +6.0%.
When it had MACD below its signal line (3,341 days), it was higher 63 trading days later 66% of the time, median +4.3%.
All days since 1999 (6,698 days): higher 63 trading days later 66% of the time, median +4.5%.

Base rates use COST's own daily history since 1999; they describe the past, not a forecast.

ŷRobot chart signal: Bullish, from the chart signal model.

COST analysis: AI score, fair value and forecast · Is it a bull or a bear market today? · All covered stocks

ŷRobot analysis is AI-generated and quality-gated; nothing here is investment advice.