On 2026-08-19, Costco (COST) closed at 956.99 USD, down 0.45% on the day. Its 20-day return of +3.20% is in the 62nd percentile. It trades at 44.7% of its 52-week range. Its RSI(14) of 52.80 is in the 50th percentile of its history since 1986. Its RSI last entered overbought 93 days ago (2026-05-18) and oversold 240 days ago (2025-12-22). It is trading above some and below others of its 20-, 50- and 200-day moving averages. Its 20/50/200-day moving averages are 952.08 / 949.64 / 959.08 USD, with price +0.52% / +0.77% / -0.22% against them. Its moving averages stack 200-day > 20-day > 50-day. Its 52-week range is 844.06–1096.5 USD; it closed 12.72% below the high and 13.38% above the low. The high was set 92 days ago (2026-05-19) and the low 246 days ago (2025-12-16). It is 12.72% below its all-time high, set 92 days ago (2026-05-19). Its 20-day volatility is 0.942% daily, in the 16th percentile of its history since 1986. Its realized volatility across horizons is 5-day 0.874%, 20-day 0.942%, 60-day 1.316%, and 120-day 1.282% daily. Its 14-day average true range (ATR) is 17.63 USD, 1.84% of price. It has returned +0.78% over 5 days, +1.59% over 10 days, +3.20% over 20 days, -6.93% over 60 days, -3.01% over 120 days, and -2.28% over 252 days. Against the S&P 500, its weekly-return beta -0.03 / correlation -0.02 (52-week); beta -0.15 / correlation -0.12 (26-week). Relative to the S&P 500, it has returned +0.41% (20-day), -10.07% (60-day), and -21.80% (252-day). Its weekly-return correlation to the change in the US 10-year TIPS real yield is -0.16 (52-week); +0.04 (26-week). Next earnings are scheduled for 2026-09-24.
=== COSTCO (COST) (USD) ===
price & change (as of 2026-08-19, prior 2026-08-18)
close 956.99
change -4.36 (-0.454%)
range (as of 2026-08-19)
range 22.70
close pos 4.4% of range
moving averages (as of 2026-08-19)
20d MA 952.08 price above by +0.52%
50d MA 949.64 price above by +0.77%
200d MA 959.08 price below by -0.22%
200d MA slope +0.23% over 20 sessions (rising)
price mixed vs MAs
stack: 200d > 20d > 50d
20d MA last crossed above 50d MA: 2026-08-18 (1d ago)
20d MA last crossed below 200d MA: 2026-07-09 (41d ago)
50d MA last crossed below 200d MA: 2026-08-03 (16d ago)
volatility (as of 2026-08-19)
20d stdev 0.942% daily ≈ 15.0% annualized (×√252) (16th pct of own history, since 1986 (10086 obs))
5d vol 0.874% daily (25th pct of own history, since 1986 (10101 obs))
60d vol 1.316% daily (38th pct of own history, since 1986 (10046 obs))
120d vol 1.282% daily (34th pct of own history, since 1986 (9986 obs))
vs easing-2024 avg 0.73× (0.942% vs 1.284% era avg)
ATR (as of 2026-08-19)
ATR(14) 17.63
ATR% 1.84% (33rd pct of own history, since 1986 (10092 obs))
range/ATR 128.7%
relative volume (as of 2026-08-19)
RVOL 0.84x (today vs 20-day average volume)
pctile 43rd pct of own history, since 1986 (10086 obs)
52-week range (as of 2026-08-19)
high 1096.50 (-12.72% from high) [2026-05-19, 92d ago]
low 844.06 (+13.38% from low) [2025-12-16, 246d ago]
drawdown -12.72% from all-time high, 92d 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 2026-08-19)
RSI(14) 52.80 (50th pct of own history, since 1986 (10092 obs))
last overbought 93d ago (2026-05-18)
last oversold 240d ago (2025-12-22)
MACD (as of 2026-08-19)
MACD(12,26,9) +2.57 (above signal) signal +1.16 hist +1.41
returns (as of 2026-08-19)
5d return +0.78%
10d return +1.59%
20d return +3.20%
60d return -6.93%
120d return -3.01%
252d return -2.28%
YTD return +10.98%
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 1.28%
real-yield sensitivity (weekly returns vs weekly Δ in 10Y TIPS real yield, DFII10) (as of 2026-08-18)
vs real yield (Δ) +0.04 (26w)
vs real yield (Δ) -0.16 (52w)
S&P 500 market factor (weekly returns) (as of 2026-08-19)
vs S&P 500 beta -0.15 corr -0.12 (26w)
vs S&P 500 beta -0.03 corr -0.02 (52w)
vs S&P 500 +0.41% rel (20d return)
vs S&P 500 -10.07% rel (60d return)
vs S&P 500 -21.80% rel (252d return)
vs Nasdaq 100 beta -0.18 corr -0.22 (26w)
vs Nasdaq 100 beta -0.11 corr -0.10 (52w)
vs Nasdaq 100 +1.68% rel (20d return)
vs Nasdaq 100 -6.73% rel (60d return)
vs Nasdaq 100 -26.36% rel (252d return)
vs XLP (Consumer Staples) beta +0.85 corr +0.63 (26w)
vs XLP (Consumer Staples) beta +1.00 corr +0.67 (52w)
vs XLP +0.64% rel (20d return)
vs XLP -8.98% rel (60d return)
vs XLP -7.94% rel (252d return)
earnings horizon
next earnings 2026-09-24 (36 days)