- 5 days
- +6.6%
- From 52-wk high
- −4.1%
- vs 200-day
- +8.0%
- RSI 14
- 69.0
- 1 month
- +12.0%
- Next earnings
- –
Daily candles, 6 months

Today vs its past
Its current slide on top of its past 15%+ slides, and what followed charts that looked like today's.
| Next N sessions up | n | 5 | 10 | 20 | Median 20 |
|---|---|---|---|---|---|
| Own lookalikes | 7 | 42.9% | 57.1% | 57.1% | +1.1% |
| 50-stock pool | 166 | 62.7% | 59.6% | 63.3% | +1.9% |
| Baseline (any day) | all | 51.5% | 51.2% | 46.7% | −0.5% |
- COST's one rally run since Nov 2024 started -21% below the high with RSI 30. Today: -4%, RSI 69.
7%+ one-day drops since Nov 2024
None.
7%+ up days and rally runs
No 7%+ up days.
Rally runs (20%+ from a low)
| Low | High | Gain | Sessions | From high at low | RSI at low |
|---|---|---|---|---|---|
| Dec 22, 2025 | May 19, 2026 | +29.1% | 101 | −20.7% | 30 |
Calls on COST and what followed
Live = saved on the day. Backfill = the same rule re-run on past weeks with only the data known then.
| Date | Kind | Call | From high | RSI | Next 5 | Next 20 | vs SPY 20 | Worst in 20 |
|---|---|---|---|---|---|---|---|---|
| Nov 4, 2026 | live | Leans rally | −4.1% | 69 | – | – | – | – |
| Oct 30, 2026 | backfill | No clear edge | −7.2% | 67 | – | – | – | +0.7% |
| Oct 23, 2026 | backfill | Leans rally | −8.2% | 69 | +1.0% | – | – | −2.1% |
| Oct 16, 2026 | backfill | Leans rally | −9.5% | 72 | +1.4% | – | – | −0.6% |
| Oct 9, 2026 | backfill | No clear edge | −13.3% | 62 | +4.5% | – | – | +0.8% |
| Oct 2, 2026 | backfill | No clear edge | −15.7% | 51 | +2.9% | +10.1% | +11.9% | +0.3% |
| Sep 25, 2026 | backfill | No clear edge | −15.5% | 52 | −0.2% | +8.7% | +10.2% | −1.3% |
| Sep 18, 2026 | backfill | No clear edge | −18.1% | 36 | +3.1% | +10.5% | +10.3% | +0.1% |
| Sep 11, 2026 | backfill | No clear edge | −17.2% | 36 | −1.0% | +4.7% | +2.5% | −1.2% |
| Sep 4, 2026 | backfill | No clear edge | −16.2% | 38 | +0.3% | +0.8% | −0.0% | −2.4% |
| Aug 28, 2026 | backfill | Leans rally | −13.5% | 48 | −3.1% | −2.4% | −2.1% | −5.5% |
| Aug 21, 2026 | backfill | Leans rally | −13.3% | 49 | −0.2% | −5.2% | −6.5% | −5.7% |
| Aug 14, 2026 | backfill | Leans rally | −12.0% | 56 | −1.4% | −4.4% | −2.4% | −6.1% |
| Aug 7, 2026 | backfill | Leans rally | −13.2% | 50 | +1.4% | −3.4% | −3.0% | −3.4% |
| Jul 31, 2026 | backfill | No clear edge | −12.9% | 52 | −0.4% | −0.7% | −3.7% | −1.9% |
| Jul 24, 2026 | backfill | Leans rally | −14.4% | 47 | +1.8% | +1.4% | −2.3% | −0.2% |
| Jul 17, 2026 | backfill | Leans rally | −14.0% | 47 | −0.5% | +2.3% | −2.1% | −1.6% |
| Jul 10, 2026 | backfill | No clear edge | −16.3% | 36 | +2.7% | +3.6% | +1.2% | +0.0% |
| Jul 2, 2026 | backfill | No clear edge | −13.0% | 45 | −3.7% | +0.2% | −0.1% | −4.1% |
| Jun 26, 2026 | backfill | No clear edge | −13.0% | 41 | −0.2% | +0.1% | −1.3% | −4.2% |
| Jun 18, 2026 | backfill | No clear edge | −13.1% | 38 | +0.1% | −1.6% | −1.0% | −4.0% |
| Jun 12, 2026 | backfill | Leans rally | −10.2% | 46 | −3.2% | −6.2% | −7.8% | −7.1% |
| Jun 5, 2026 | backfill | No clear edge | −11.2% | 41 | +1.1% | −2.5% | −4.1% | −4.9% |
| May 29, 2026 | backfill | Leans rally | −12.6% | 34 | +1.6% | −1.0% | +0.8% | −1.5% |
| May 22, 2026 | backfill | No clear edge | −6.0% | 50 | −8.0% | −6.9% | −5.5% | −8.0% |
| May 15, 2026 | backfill | Leans rally | −0.2% | 66 | −2.0% | −6.6% | −8.7% | −9.8% |
| May 8, 2026 | backfill | Leans rally | −4.0% | 53 | +4.0% | −3.4% | −3.6% | −6.2% |
| May 1, 2026 | backfill | Leans rally | −3.7% | 56 | −0.3% | −6.5% | −11.7% | −6.5% |
| Apr 24, 2026 | backfill | Leans rally | −3.9% | 56 | +0.2% | +1.8% | −2.6% | −1.7% |
| Apr 17, 2026 | backfill | Leans rally | −5.0% | 52 | +1.1% | +5.1% | +1.0% | −0.6% |
| Apr 10, 2026 | backfill | Leans rally | −5.1% | 50 | +0.1% | +1.2% | −7.4% | −2.4% |
| Apr 2, 2026 | backfill | Leans rally | −3.6% | 63 | −1.6% | −0.2% | −10.1% | −4.0% |
| Mar 27, 2026 | backfill | Leans rally | −6.5% | 50 | +3.5% | +1.4% | −11.3% | −0.9% |
| Mar 20, 2026 | backfill | Leans rally | −7.6% | 43 | +1.2% | +2.6% | −6.7% | −0.7% |
| Mar 13, 2026 | backfill | Leans rally | −4.2% | 57 | −3.6% | −2.7% | −6.6% | −4.2% |
| Mar 6, 2026 | backfill | Leans rally | −5.2% | 55 | +1.0% | +2.0% | +3.8% | −3.2% |
| Feb 27, 2026 | backfill | Leans rally | −4.0% | 62 | −1.3% | −2.7% | +4.6% | −4.5% |
| Feb 20, 2026 | backfill | No clear edge | −6.4% | 55 | +2.6% | −1.3% | +4.4% | −1.3% |
| Feb 13, 2026 | backfill | Leans rally | −4.9% | 68 | −3.2% | −1.6% | +0.2% | −3.5% |
| Feb 6, 2026 | backfill | Leans rally | −6.5% | 71 | +1.7% | +0.4% | +2.2% | −3.0% |
| Jan 30, 2026 | backfill | No clear edge | −12.2% | 53 | +6.5% | +6.6% | +7.5% | +3.0% |
| Jan 23, 2026 | backfill | Leans rally | −8.3% | 76 | −4.2% | +0.4% | +1.4% | −4.2% |
| Jan 16, 2026 | backfill | Leans rally | −10.1% | 75 | +1.5% | +5.2% | +6.4% | −2.3% |
| Jan 9, 2026 | backfill | Leans rally | −13.8% | 66 | +4.2% | +8.0% | +8.0% | +1.8% |
| Jan 2, 2026 | backfill | Leans rally | −20.3% | 36 | +8.2% | +13.5% | +11.7% | +2.5% |
| Dec 26, 2025 | backfill | Leans rally | −18.6% | 45 | +0.3% | +11.1% | +10.3% | −2.2% |
| Dec 19, 2025 | backfill | Leans rally | −20.2% | 32 | +1.4% | +14.9% | +14.2% | −0.7% |
| Dec 12, 2025 | backfill | Leans rally | −17.5% | 40 | −3.3% | +6.5% | +4.4% | −3.9% |
| Dec 5, 2025 | backfill | Leans rally | −16.6% | 42 | −1.1% | −0.6% | −1.8% | −5.0% |
| Nov 28, 2025 | backfill | Leans rally | −14.8% | 50 | −2.1% | −5.0% | −6.0% | −7.0% |
| Nov 21, 2025 | backfill | Leans rally | −16.2% | 40 | +1.4% | −5.5% | −9.7% | −5.5% |
| Nov 14, 2025 | backfill | No clear edge | −13.9% | 48 | −2.6% | −6.8% | −8.1% | −6.8% |
| Nov 7, 2025 | backfill | Leans rally | −14.0% | 46 | +0.0% | −3.8% | −5.7% | −4.0% |

