On 2026-08-20, Costco (COST) closed at 933.51 USD, down 2.45% on the day. Its RSI(14) of 42.50 is in the 19th percentile of its history since 1986. It trades at 35.4% of its 52-week range. Its 20-day return of +0.80% is in the 47th percentile. Its RSI last entered overbought 94 days ago (2026-05-18) and oversold 241 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 952.46 / 948.93 / 959.19 USD, with price -1.99% / -1.63% / -2.68% against them. Its moving averages stack 200-day > 20-day > 50-day. Its 52-week range is 844.06–1096.5 USD; it closed 14.86% below the high and 10.60% above the low. The high was set 93 days ago (2026-05-19) and the low 247 days ago (2025-12-16). It is 14.86% below its all-time high, set 93 days ago (2026-05-19). Its 20-day volatility is 1.109% daily, in the 27th percentile of its history since 1986. Its realized volatility across horizons is 5-day 1.203%, 20-day 1.109%, 60-day 1.316%, and 120-day 1.281% daily. Annualized, these are 5-day 19.1%, 20-day 17.6%, 60-day 20.9%, and 120-day 20.3%. Its 14-day average true range (ATR) is 18.6 USD, 1.99% of price. It has returned -2.95% (17th pctile) over 5 days, -1.65% (30th) over 10 days, +0.80% (47th) over 20 days, -6.92% (18th) over 60 days, -7.65% (17th) over 120 days, and -4.83% (20th) over 252 days. Against the S&P 500, its weekly-return beta +0.01 / correlation +0.01 (52-week); beta -0.09 / correlation -0.07 (26-week). Relative to the S&P 500, it has returned -2.34% (20-day), -8.54% (60-day), and -24.01% (252-day). Its weekly-return correlation to the change in the US 10-year TIPS real yield is -0.15 (52-week); +0.05 (26-week). Next earnings are scheduled for 2026-09-24.
=== COSTCO (COST) (USD) ===
price & change (as of 2026-08-20, prior 2026-08-19)
close 933.51
change -23.48 (-2.454%)
listing Exchange: NASDAQ, Currency: USD
range (as of 2026-08-20)
range 18.45
close pos 42.0% of range
moving averages (as of 2026-08-20)
20d MA 952.46 price below by -1.99%
50d MA 948.93 price below by -1.63%
200d MA 959.19 price below by -2.68%
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 (2d ago)
20d MA last crossed below 200d MA: 2026-07-09 (42d ago)
50d MA last crossed below 200d MA: 2026-08-03 (17d ago)
volatility (as of 2026-08-20)
20d stdev 1.109% daily ≈ 17.6% annualized (×√252) (27th pct of own history, since 1986 (10087 obs))
5d vol 1.203% daily ≈ 19.1% annualized (×√252) (43rd pct of own history, since 1986 (10102 obs))
60d vol 1.316% daily ≈ 20.9% annualized (×√252) (38th pct of own history, since 1986 (10047 obs))
120d vol 1.281% daily ≈ 20.3% annualized (×√252) (34th pct of own history, since 1986 (9987 obs))
vs easing-2024 avg 0.86× (1.109% vs 1.287% era avg)
ATR (as of 2026-08-20)
ATR(14) 18.60
ATR% 1.99% (40th pct of own history, since 1986 (10093 obs))
range/ATR 99.2%
relative volume (as of 2026-08-20)
RVOL 1.40x (today vs 20-day average volume)
pctile 85th pct of own history, since 1986 (10087 obs)
52-week range (as of 2026-08-20)
high 1096.50 (-14.86% from high) [2026-05-19, 93d ago]
low 844.06 (+10.60% from low) [2025-12-16, 247d ago]
drawdown -14.86% from all-time high, 93d 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 2026-08-20)
RSI(14) 42.50 (19th pct of own history, since 1986 (10093 obs))
last overbought 94d ago (2026-05-18)
last oversold 241d ago (2025-12-22)
MACD (as of 2026-08-20)
MACD(12,26,9) +0.74 (below signal) signal +1.07 hist -0.34
returns (as of 2026-08-20)
5d return -2.95% (17th pct of own history, since 1986 (10102 obs))
10d return -1.65% (30th pct of own history, since 1986 (10097 obs))
20d return +0.80% (47th pct of own history, since 1986 (10087 obs))
60d return -6.92% (18th pct of own history, since 1986 (10047 obs))
120d return -7.65% (17th pct of own history, since 1986 (9987 obs))
252d return -4.83% (20th pct of own history, since 1986 (9855 obs))
YTD return +8.25%
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 2026-08-19)
vs real yield (Δ) +0.05 (26w)
vs real yield (Δ) -0.15 (52w)
S&P 500 market factor (weekly returns) (as of 2026-08-20)
vs S&P 500 beta -0.09 corr -0.07 (26w)
vs S&P 500 beta +0.01 corr +0.01 (52w)
vs S&P 500 -2.34% rel (20d return)
vs S&P 500 -8.54% rel (60d return)
vs S&P 500 -24.01% rel (252d return)
vs Nasdaq 100 beta -0.14 corr -0.17 (26w)
vs Nasdaq 100 beta -0.08 corr -0.08 (52w)
vs Nasdaq 100 -1.94% rel (20d return)
vs Nasdaq 100 -4.27% rel (60d return)
vs Nasdaq 100 -29.71% rel (252d return)
vs XLP (Consumer Staples) beta +0.87 corr +0.64 (26w)
vs XLP (Consumer Staples) beta +1.01 corr +0.67 (52w)
vs XLP -1.73% rel (20d return)
vs XLP -8.94% rel (60d return)
vs XLP -7.93% rel (252d return)
earnings horizon
next earnings 2026-09-24 (35 days)