Costco COST
$1,053.56 −$12.03 (-1.13%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $1,052.57 -0.09%
Open$1,045.25
Prev close$1,065.59
Day range$1,043.00 – $1,063.02
Volume2.51M
Market cap$466.86B
P/E (TTM)50.7
Dividend yield0.53%
Average implied volatility across the listed chain right now: 28%. Implied volatility measures how big a price swing the options market is pricing in — there is no fixed “normal” level, it varies a lot by stock.
Open interest by strike
Nearest listed expiry only. Calls above the line, puts below — clusters mark strikes where the market has built up the most open positions.
Implied volatility by strike
The “volatility smile”: strikes far from the current price often price in richer implied volatility than at-the-money strikes.
Calls
| Expiry | Strike | Last | Bid/Ask | Volume | Open interest | IV |
|---|---|---|---|---|---|---|
| 13 Nov 2026 | $1,052.50 | $19.03 | $14.05/$18.45 | 19 | 3 | 30% |
| 13 Nov 2026 | $1,055.00 | $14.07 | $12.90/$16.30 | 73 | 187 | 29% |
| 13 Nov 2026 | $1,050.00 | $16.47 | $14.35/$18.10 | 74 | 209 | 28% |
| 13 Nov 2026 | $1,057.50 | $12.40 | $12.10/$13.25 | 27 | 2 | 28% |
| 13 Nov 2026 | $1,047.50 | $28.55 | $15.40/$21.25 | 0 | 1 | 29% |
| 13 Nov 2026 | $1,060.00 | $11.68 | $10.95/$12.35 | 237 | 320 | 28% |
| 13 Nov 2026 | $1,045.00 | $20.74 | $18.00/$22.10 | 53 | 93 | 30% |
| 13 Nov 2026 | $1,062.50 | $10.95 | $9.85/$11.35 | 104 | 2 | 28% |
| 13 Nov 2026 | $1,042.50 | $25.34 | $19.45/$24.25 | 3 | 0 | 30% |
| 13 Nov 2026 | $1,065.00 | $9.45 | $8.75/$10.65 | 34 | 145 | 28% |
| 13 Nov 2026 | $1,040.00 | $23.18 | $21.40/$25.40 | 36 | 153 | 30% |
| 13 Nov 2026 | $1,037.50 | $29.25 | $22.60/$27.70 | 41 | 0 | 30% |
| 13 Nov 2026 | $1,070.00 | $7.73 | $7.10/$9.20 | 90 | 98 | 29% |
| 13 Nov 2026 | $1,035.00 | $27.27 | $23.70/$29.45 | 6 | 110 | 30% |
| 13 Nov 2026 | $1,075.00 | $6.25 | $4.65/$7.85 | 72 | 112 | 28% |
Puts
| Expiry | Strike | Last | Bid/Ask | Volume | Open interest | IV |
|---|---|---|---|---|---|---|
| 13 Nov 2026 | $1,052.50 | $12.45 | $10.85/$14.10 | 1 | 1 | 26% |
| 13 Nov 2026 | $1,055.00 | $14.34 | $13.50/$15.05 | 95 | 61 | 27% |
| 13 Nov 2026 | $1,050.00 | $12.00 | $9.75/$12.70 | 50 | 59 | 26% |
| 13 Nov 2026 | $1,057.50 | $14.94 | $12.40/$16.65 | 18 | 4 | 25% |
| 13 Nov 2026 | $1,047.50 | $10.30 | $8.30/$11.70 | 37 | 1 | 26% |
| 13 Nov 2026 | $1,060.00 | $16.15 | $13.60/$17.95 | 22 | 23 | 25% |
| 13 Nov 2026 | $1,045.00 | $8.80 | $8.35/$11.45 | 44 | 28 | 28% |
| 13 Nov 2026 | $1,062.50 | $15.39 | $15.20/$19.30 | 3 | 4 | 25% |
| 13 Nov 2026 | $1,042.50 | $7.55 | $7.25/$9.80 | 13 | 0 | 27% |
| 13 Nov 2026 | $1,065.00 | $16.60 | $16.60/$20.90 | 70 | 18 | 25% |
| 13 Nov 2026 | $1,040.00 | $7.45 | $7.00/$8.80 | 93 | 98 | 27% |
| 13 Nov 2026 | $1,037.50 | $7.25 | $4.10/$10.90 | 4 | 27 | 28% |
| 13 Nov 2026 | $1,070.00 | $21.35 | $19.85/$24.20 | 15 | 15 | 24% |
| 13 Nov 2026 | $1,035.00 | $5.80 | $2.85/$8.30 | 35 | 28 | 26% |
| 13 Nov 2026 | $1,075.00 | $24.42 | $23.75/$27.80 | 30 | 28 | 25% |
Open interest = contracts currently outstanding (not yet closed out). Higher open interest generally means a strike/expiry is more actively traded and easier to get in and out of.
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