On 2026-08-21, Costco (COST) closed at 947.74 USD, up 1.52% on the day. Its RSI(14) of 48.99 is in the 37th percentile of its history since 1986. It trades at 41.1% of its 52-week range. Its 20-day return of +1.36% is in the 50th percentile. Its RSI last entered overbought 95 days ago (2026-05-18) and oversold 242 days ago (2025-12-22). It is trading below its 20-, 50- and 200-day moving averages. Its 20/50/200-day moving averages are 953.09 / 948.22 / 959.29 USD, with price -0.56% / -0.05% / -1.20% against them. Its moving averages stack 200-day > 20-day > 50-day. Its 52-week range is 844.06–1096.5 USD; it closed 13.57% below the high and 12.28% above the low. The high was set 94 days ago (2026-05-19) and the low 248 days ago (2025-12-16). It is 13.57% below its all-time high, set 94 days ago (2026-05-19). Its 20-day volatility is 1.139% daily, in the 29th percentile of its history since 1986. Its realized volatility across horizons is 5-day 1.540%, 20-day 1.139%, 60-day 1.332%, and 120-day 1.288% daily. Annualized, these are 5-day 24.4%, 20-day 18.1%, 60-day 21.1%, and 120-day 20.4%. Its 14-day average true range (ATR) is 18.44 USD, 1.95% of price. It has returned -1.39% (29th pctile) over 5 days, -0.01% (44th) over 10 days, +1.36% (50th) over 20 days, -5.57% (21st) over 60 days, -5.49% (20th) over 120 days, and -4.71% (20th) over 252 days. Against the S&P 500, its weekly-return beta -0.02 / correlation -0.01 (52-week); beta -0.13 / correlation -0.10 (26-week). Relative to the S&P 500, it has returned -2.18% (20-day), -7.62% (60-day), and -24.70% (252-day). Its weekly-return correlation to the change in the US 10-year TIPS real yield is -0.13 (52-week); +0.09 (26-week). Next earnings are scheduled for 2026-09-24.
=== COSTCO (COST) (USD) ===
price & change (as of 2026-08-21, prior 2026-08-20)
close 947.74
change +14.23 (+1.524%)
listing Exchange: NASDAQ, Currency: USD
range (as of 2026-08-21)
range 16.08
close pos 86.6% of range
moving averages (as of 2026-08-21)
20d MA 953.09 price below by -0.56%
50d MA 948.22 price below by -0.05%
200d MA 959.29 price below by -1.20%
200d MA slope +0.23% over 20 sessions (rising)
price < all MAs
stack: 200d > 20d > 50d
20d MA last crossed above 50d MA: 2026-08-18 (3d ago)
20d MA last crossed below 200d MA: 2026-07-09 (43d ago)
50d MA last crossed below 200d MA: 2026-08-03 (18d ago)
volatility (as of 2026-08-21)
20d stdev 1.139% daily ≈ 18.1% annualized (×√252) (29th pct of own history, since 1986 (10088 obs))
5d vol 1.540% daily ≈ 24.4% annualized (×√252) (58th pct of own history, since 1986 (10103 obs))
60d vol 1.332% daily ≈ 21.1% annualized (×√252) (39th pct of own history, since 1986 (10048 obs))
120d vol 1.288% daily ≈ 20.4% annualized (×√252) (35th pct of own history, since 1986 (9988 obs))
vs easing-2024 avg 0.89× (1.139% vs 1.287% era avg)
ATR (as of 2026-08-21)
ATR(14) 18.44
ATR% 1.95% (38th pct of own history, since 1986 (10094 obs))
range/ATR 87.2%
relative volume (as of 2026-08-21)
RVOL 1.29x (today vs 20-day average volume)
pctile 81st pct of own history, since 1986 (10088 obs)
avg vol 63d 2,341,144 (≈3-month average daily share volume)
52-week range (as of 2026-08-21)
high 1096.50 (-13.57% from high) [2026-05-19, 94d ago]
low 844.06 (+12.28% from low) [2025-12-16, 248d ago]
drawdown -13.57% from all-time high, 94d ago (2026-05-19)
max drawdown (10-year, close-basis) -31.51% (2022-04-07 608.05 -> 2022-05-20 416.43, 43d peak-to-trough); recovered 2023-12-07 (566d after trough)
momentum (as of 2026-08-21)
RSI(14) 48.99 (37th pct of own history, since 1986 (10094 obs))
last overbought 95d ago (2026-05-18)
last oversold 242d ago (2025-12-22)
MACD (as of 2026-08-21)
MACD(12,26,9) +0.43 (below signal) signal +0.95 hist -0.52
returns (as of 2026-08-21)
5d return -1.39% from 961.10 on 2026-08-14 (29th pct of own history, since 1986 (10103 obs))
10d return -0.01% from 947.82 on 2026-08-07 (44th pct of own history, since 1986 (10098 obs))
20d return +1.36% from 935.03 on 2026-07-24 (50th pct of own history, since 1986 (10088 obs))
60d return -5.57% from 1003.69 on 2026-05-27 (21st pct of own history, since 1986 (10048 obs))
120d return -5.49% from 1002.77 on 2026-03-02 (20th pct of own history, since 1986 (9988 obs))
252d return -4.71% from 994.57 on 2025-08-20 (20th pct of own history, since 1986 (9856 obs))
YTD return +9.90%
volatility by rate-era
pre-crisis 2.33% (from 1986-07-09)
ZIRP-2009 1.23%
tightening-2015 1.26%
ZIRP-2019 1.39%
tightening-2022 1.64%
easing-2024 1.29%
real-yield sensitivity (weekly returns vs weekly Δ in 10Y TIPS real yield, DFII10) (as of 2026-08-20)
vs real yield (Δ) +0.09 (26w)
vs real yield (Δ) -0.13 (52w)
S&P 500 market factor (weekly returns) (as of 2026-08-21)
vs S&P 500 beta -0.13 corr -0.10 (26w)
vs S&P 500 beta -0.02 corr -0.01 (52w)
vs S&P 500 -2.18% rel (20d return)
vs S&P 500 -7.62% rel (60d return)
vs S&P 500 -24.70% rel (252d return)
vs Nasdaq 100 beta -0.16 corr -0.21 (26w)
vs Nasdaq 100 beta -0.10 corr -0.09 (52w)
vs Nasdaq 100 -2.91% rel (20d return)
vs Nasdaq 100 -3.38% rel (60d return)
vs Nasdaq 100 -30.78% rel (252d return)
vs XLP (Consumer Staples) beta +0.86 corr +0.63 (26w)
vs XLP (Consumer Staples) beta +1.00 corr +0.67 (52w)
vs XLP -0.85% rel (20d return)
vs XLP -7.24% rel (60d return)
vs XLP -8.04% rel (252d return)
earnings horizon
next earnings 2026-09-24 (34 days)