The Therm Score doesn't give buy or sell recommendations — it's non-personalized historical statistical information. Today Costco (COST) has a Therm Score of 79.7 (Warm zone). Across the covered universe (S&P 500, Dow 30 and Nasdaq-100 — 520 assets), when the score has been in the Warm zone, price rose over the following 21 sessions in 90.9% of 11 independent episodes analyzed (median +2.59%, net of trading costs). That's an aggregate historical pattern for the zone, not a personalized recommendation for COST or an assessment of your situation.

MarketTherm doesn't issue buy, sell, or hold ratings for Costco or any asset — the Therm Score is a technical positioning indicator, not an analyst recommendation. What it shows instead: COST is in the Warm zone today (79.7/100), and price rose over the following 21 sessions in 90.9% of 11 independent episodes analyzed (median +2.59%, net of trading costs) when the covered universe has scored there historically.

Costco (COST) fell 1.30% versus the previous session's close. Its Therm Score moved down 9.9 points over the same period, to 79.7 (Warm zone) today. MarketTherm doesn't attribute daily price moves to specific news or events — for that, see the recent news section below.

According to the Therm Score, Costco (COST) is in the Warm zone today (79.7/100), based on normalized technical positioning relative to its own historical range. This asset also carries the Weak Trend badge right now — its longer-term trend is deteriorating, a context where this zone's historical pattern has held up less well.

MarketTherm doesn't forecast prices or set price targets for Costco. Instead of a forecast, here's the historical frequency: across the covered universe, price rose over the following 21 sessions in 90.9% of 11 independent episodes analyzed (median +2.59%, net of trading costs) after a score in the Warm zone. That's a statistical tendency for the zone as a whole, not a prediction for COST specifically.

Yes — looking at COST's own available history (537 sessions), its Therm Score has spent 15.6% of the time in the Warm zone. That's a different measure from the win-rate cited above (how often price rose afterward, across the whole universe) — this one just says how often COST itself has scored in this zone, regardless of what happened to its price next.

Over the past 252 trading sessions (roughly a year), COST has traded between $846.26 and $1092.58, versus $992.13 today. This is the stock's own price range — see the next question for its Therm Score range over the same period.

Over the past 252 trading sessions (roughly a year), COST's Therm Score has ranged from 5.5 to 100.0, versus 79.7 today. This tracks the score itself, not the stock price — see the previous question for COST's 52-week price range.

COST has been in the Warm zone for 1 consecutive session as of today. A longer streak means the score has been more persistently in this range recently — it isn't, by itself, a signal to act on.

Today, COST's Therm Score of 79.7 ranks 5 of 5 tracked Consumer Staples stocks (COST included), which range from 79.7 to 87.1 today. This is descriptive context for the sector, not a ranking recommendation.

The Weak Trend badge appears when an asset's longer-term trend is sustained and deteriorating. Validation shows the Therm Score's historical pattern is less reliable in that context — so while Costco (COST) shows a Warm score today, the usual zone statistics apply less confidently to it while this badge is active.

For the Warm zone, the historical share of positive episodes by timeframe has been: 5 sessions — 66.7% (n=12); 10 sessions — 83.3% (n=12); 21 sessions — 90.9% (n=11). Compare across timeframes yourself with the selector above — a pattern that holds up at every horizon is more convincing than one that only appears at a single one.

The Therm Score is only validated for horizons of 5, 10, and 21 trading sessions (roughly one week to one month) — it isn't a fundamental analysis tool and says nothing about Costco's prospects as a multi-year holding, its earnings, or its valuation.

It's based on a historical backtest across all 520 assets in the covered universe, using non-overlapping episodes and a strict train/test split by date to check the pattern holds out-of-sample, net of an estimated trading cost — see the Methodology page for the full process. Like any indicator based on past data, it doesn't guarantee future results, and it isn't a substitute for professional financial advice.