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Mercantile Bank MBWM

US equityMarket cap rank #3239Banks - Regional
$58.03 −$0.80 (-1.36%)
Pre-market · Oct 8, 8:20 am ET · After hours $58.03 0.00%
Open$58.18
Prev close$58.83
Day range$57.65 – $59.50
Volume111.4K
Market cap$1.00B
P/E (TTM)10.2
Dividend yield2.65%

Average implied volatility across the listed chain right now: 79%. 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

35455565758590CallsPuts

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

-24%71%167%262%356090CallsPuts

The “volatility smile”: strikes far from the current price often price in richer implied volatility than at-the-money strikes.

Calls

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $60.00 $1.47 $0.00/$4.90 0 3 64%
16 Oct 2026 $55.00 $4.46 $1.50/$5.50 0 0 43%
16 Oct 2026 $65.00 $0.27 $0.00/$1.75 0 0 59%
16 Oct 2026 $50.00 $8.91 $6.30/$10.50 0 0 79%
16 Oct 2026 $70.00 $0.03 $0.00/$2.75 0 0 57%
16 Oct 2026 $45.00 $13.85 $11.30/$15.50 0 0 119%
16 Oct 2026 $75.00 $0.00 $0.00/$4.50 0 0 56%
16 Oct 2026 $40.00 $18.84 $16.30/$20.50 0 0 162%
16 Oct 2026 $80.00 $0.00 $0.00/$2.75 0 0 56%
16 Oct 2026 $35.00 $23.83 $21.80/$25.50 0 0 238%
16 Oct 2026 $85.00 $0.00 $0.00/$4.90 0 0 65%
16 Oct 2026 $90.00 $0.00 $0.00/$2.75 0 0 74%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $60.00 $2.61 $0.30/$4.90 0 2 40%
16 Oct 2026 $55.00 $0.61 $0.00/$4.90 0 0 51%
16 Oct 2026 $65.00 $6.42 $5.00/$8.30 0 1 0%
16 Oct 2026 $50.00 $0.06 $0.00/$1.75 0 0 55%
16 Oct 2026 $70.00 $11.18 $10.00/$13.60 0 0 0%
16 Oct 2026 $45.00 $0.00 $0.00/$1.75 0 0 58%
16 Oct 2026 $75.00 $16.17 $15.00/$18.90 0 0 0%
16 Oct 2026 $40.00 $0.00 $0.00/$1.75 0 0 65%
16 Oct 2026 $80.00 $21.17 $20.00/$23.20 0 0 0%
16 Oct 2026 $35.00 $0.00 $0.00/$0.30 0 0 87%
16 Oct 2026 $85.00 $26.17 $25.00/$28.20 0 0 0%
16 Oct 2026 $90.00 $31.17 $30.00/$33.20 0 0 0%

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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