Enerflex EFXT
$19.40 +$0.53 (+2.81%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $20.22 +4.23%
Open$19.18
Prev close$18.87
Day range$18.89 – $19.59
Volume1.24M
Market cap$2.37B
P/E (TTM)32.9
Dividend yield0.63%
Average implied volatility across the listed chain right now: 114%. 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 |
|---|---|---|---|---|---|---|
| 20 Nov 2026 | $20.00 | $0.93 | $0.20/$1.00 | 0 | 1 | 58% |
| 20 Nov 2026 | $17.50 | $2.15 | $1.60/$2.45 | 0 | 3 | 48% |
| 20 Nov 2026 | $22.50 | $0.33 | $0.00/$0.75 | 0 | 3 | 86% |
| 20 Nov 2026 | $15.00 | $4.08 | $3.50/$4.90 | 0 | 0 | 0% |
| 20 Nov 2026 | $25.00 | $0.07 | $0.00/$0.75 | 2 | 146 | 81% |
| 20 Nov 2026 | $12.50 | $6.45 | $5.80/$7.50 | 0 | 0 | 0% |
| 20 Nov 2026 | $30.00 | $0.01 | $0.00/$0.75 | 0 | 476 | 91% |
| 20 Nov 2026 | $35.00 | $0.00 | $0.00/$0.25 | 0 | 399 | 92% |
| 20 Nov 2026 | $40.00 | $0.00 | $0.00/$0.05 | 0 | 300 | 102% |
Puts
| Expiry | Strike | Last | Bid/Ask | Volume | Open interest | IV |
|---|---|---|---|---|---|---|
| 20 Nov 2026 | $20.00 | $1.98 | $0.05/$3.30 | 0 | 4 | 93% |
| 20 Nov 2026 | $17.50 | $0.70 | $0.00/$0.85 | 0 | 1 | 106% |
| 20 Nov 2026 | $22.50 | $3.90 | $2.85/$4.20 | 0 | 16 | 97% |
| 20 Nov 2026 | $15.00 | $0.14 | $0.00/$0.75 | 0 | 0 | 102% |
| 20 Nov 2026 | $25.00 | $6.18 | $5.20/$6.70 | 0 | 0 | 126% |
| 20 Nov 2026 | $12.50 | $0.01 | $0.00/$0.75 | 0 | 0 | 100% |
| 20 Nov 2026 | $30.00 | $11.13 | $10.20/$11.70 | 0 | 0 | 181% |
| 20 Nov 2026 | $35.00 | $16.13 | $14.80/$16.70 | 0 | 0 | 190% |
| 20 Nov 2026 | $40.00 | $21.13 | $19.80/$22.20 | 0 | 0 | 265% |
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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