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Ferroglobe GSM

US equityMarket cap rank #3422
$4.19 −$0.13 (-3.01%)
Market open · Oct 8, 10:00 am ET · After hours $4.30 -0.46%
Open$4.24
Prev close$4.32
Day range$4.18 – $4.26
Volume91.8K
Market cap$782.95M
P/E (TTM)–
Dividend yield1.38%

Average implied volatility across the listed chain right now: 150%. 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

1.002.003.004.005.006.007.008.00CallsPuts

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

-31%94%219%345%1.004.008.00CallsPuts

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 $4.00 $0.43 $0.10/$0.65 0 39 66%
16 Oct 2026 $5.00 $0.03 $0.00/$0.05 0 101 75%
16 Oct 2026 $3.00 $1.34 $0.90/$1.60 0 0 0%
16 Oct 2026 $6.00 $0.00 $0.00/$0.70 0 0 79%
16 Oct 2026 $2.00 $2.24 $2.05/$2.45 2 1 0%
16 Oct 2026 $7.00 $0.00 $0.00/$0.70 0 0 96%
16 Oct 2026 $1.00 $3.34 $2.80/$3.80 0 0 0%
16 Oct 2026 $8.00 $0.00 $0.00/$0.70 0 0 120%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $4.00 $0.05 $0.00/$0.15 60 1,558 65%
16 Oct 2026 $5.00 $0.79 $0.60/$1.00 2 19 131%
16 Oct 2026 $3.00 $0.00 $0.00/$0.70 0 0 98%
16 Oct 2026 $6.00 $1.66 $1.40/$2.15 0 2 194%
16 Oct 2026 $2.00 $0.00 $0.00/$0.70 0 0 155%
16 Oct 2026 $7.00 $2.66 $2.20/$3.40 0 0 267%
16 Oct 2026 $1.00 $0.00 $0.00/$0.70 0 0 289%
16 Oct 2026 $8.00 $3.66 $3.20/$4.40 0 0 313%

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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