Is Costco Wholesale Corporation Stock (COST) Overbought or Oversold?
RSI analysis computed from COST's daily closing prices · Data through July 2, 2026
As of July 2, 2026, COST’s 14-day RSI is 42.6, inside the neutral 30–70 band — neither overbought nor oversold by the conventional thresholds.
RSI-14 Scale
COST reads 42.6 on the 0–100 scale.
The Supporting Picture
vs 50-Day MA
-3.4%
MA: $983.89
vs 200-Day MA
+0.3%
MA: $947.36
From 52-Wk High
-10.0%
High: $1056.85
Volume vs 20-Day Avg
+21%
Avg: 1.1M shares
The 50-day average is currently above the 200-day average, which technicians read as a longer-term uptrend backdrop for the RSI reading above.
What's Behind the Reading
July 6, 2026Costco's RSI-14 reading of 42.59 indicates a neutral momentum posture, yet the stock is trading 3.7% below its 50-day moving average and 9.96% off its 52-week high. This suggests a period of consolidation or a slight pullback after what has been a strong performance over the past year, with the stock up 20.3% year-to-date and 47.9% over the last 12 months. Recent news includes the announcement of a $1.00 per share special cash dividend in May 2026, reflecting strong financial health and a commitment to shareholder returns. The company also reported solid third-quarter fiscal 2026 results in May, with diluted EPS of $3.78 and net sales increasing by 6.6% year-over-year to $57.39 billion, exceeding analyst expectations. Despite these positive fundamentals, the slight dip from recent highs could be attributed to broader market movements or profit-taking after its significant run.
Recent Overbought / Oversold Episodes
How COST behaved the last few times RSI left the neutral band — including its return over the 5 trading days after each episode ended.
| Episode | Period | Next 5 Days |
|---|---|---|
| overbought | February 6, 2026 | +1.7% |
| overbought | January 14, 2026 – January 26, 2026 | -0.9% |
| overbought | January 12, 2026 | +2.3% |
| oversold | December 22, 2025 | +1.8% |
Past behavior does not predict future results — small sample sizes especially.
Frequently Asked Questions
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Methodology
The verdict on this page is mechanical: we compute the 14-day Relative Strength Index with Wilder’s smoothing from COST’s daily closing prices, and apply the conventional thresholds — above 70 is overbought, below 30 is oversold. Moving averages, the 52-week range, and volume comparisons come from the same price history.
Indicators are recomputed after every market close. The AI commentary adds context from current news via grounded search, but never changes the computed verdict. Note: closes are as-traded; a stock split would distort readings for a few weeks until the window rolls past it.
Not Financial Advice
This page is for education and information only. Indicators are mechanical calculations, AI commentary can contain errors, and nothing here is a recommendation to buy or sell any security. Do your own research and consider consulting a qualified financial advisor. See our full disclaimer.
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