US stock · data to 2026-10-20
Costco (COST)
Costco: $996.63 on 2026-10-20. +11.8% a year since 1986, worst fall -62%. Year-by-year returns, risk profile and what followed its price patterns in the past.
Open the interactive chart and full historyKey numbers
| Last close | $996.63 |
| Return a year since 1986 | +11.8% |
| All-time high | $1,094 (2026-05-19) |
| Below its high | -8.9% |
| Worst fall | -62% (1995-01-11) |
| Yearly volatility | 31% |
| Beta vs its index | 0.84 |
| Risk / reward vs its market | Low risk · Medium reward |
Returns by year
| Year | Return |
|---|---|
| 2026 | +15.6% |
| 2025 | -5.9% |
| 2024 | +38.8% |
| 2023 | +44.6% |
| 2022 | -19.6% |
| 2021 | +50.7% |
| 2020 | +28.2% |
| 2019 | +44.3% |
| 2018 | +9.5% |
| 2017 | +16.2% |
| 2016 | -0.9% |
| 2015 | +13.9% |
What followed its price patterns in the past
How often COST was higher 40 trading days after each pattern, next to an ordinary day. History for learning, not a forecast.
| Pattern | Past cases | Higher after 40 days | On an ordinary day | Median move |
|---|---|---|---|---|
| New 52-week high | 143 | 48% | 61% | -0.2% |
| Up streak | 128 | 52% | 61% | +0.4% |
| RSI rises above 70 | 117 | 56% | 61% | +0.9% |
| Big up day | 110 | 50% | 61% | +0.1% |
| Falls below 200-day avg | 104 | 63% | 61% | +2.9% |
| Crosses above 200-day avg | 102 | 62% | 61% | +2.7% |
| Down streak | 95 | 67% | 61% | +4.1% |
| Big down day | 93 | 68% | 61% | +3.0% |
| Volume spike on a down day | 82 | 70% | 61% | +5.6% |
| Volume spike on an up day | 79 | 56% | 61% | +2.0% |
| Squeeze breakout up | 65 | 58% | 61% | +0.9% |
| RSI drops below 30 | 59 | 69% | 61% | +4.6% |
ZOSH shows history and calculations for learning. It is not investment advice and does not tell anyone to buy or sell. Data: Yahoo Finance, AMFI, NSE and official sources; it can be late or wrong, so check before acting.