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Allegro Microsystems ALGM

US equityMarket cap rank #1745
$38.46 −$1.07 (-2.71%)
Market closed · Oct 5, 9:20 pm ET · Last extended-hours $38.55 +0.23%
Open$39.44
Prev close$39.53
Day range$37.85 – $39.71
Volume3.48M
Market cap$7.17B
P/E (TTM)549.4
Dividend yield–

Average implied volatility across the listed chain right now: 91%. 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.

Calls

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $37.50 $2.20 $2.20/$2.40 15 504 67%
16 Oct 2026 $40.00 $1.11 $0.90/$1.35 27 1,646 66%
16 Oct 2026 $35.00 $4.00 $3.80/$4.20 67 973 68%
16 Oct 2026 $42.50 $0.60 $0.50/$0.75 50 236 73%
16 Oct 2026 $32.50 $6.20 $5.50/$7.00 1 3 80%
16 Oct 2026 $45.00 $0.21 $0.20/$0.30 14 317 71%
16 Oct 2026 $30.00 $9.79 $7.80/$9.60 0 1 101%
16 Oct 2026 $47.50 $0.20 $0.00/$0.25 0 24 84%
16 Oct 2026 $27.50 $12.21 $10.30/$12.10 0 0 129%
16 Oct 2026 $50.00 $0.08 $0.00/$0.75 0 55 82%
16 Oct 2026 $25.00 $14.66 $12.10/$15.00 0 0 127%
16 Oct 2026 $22.50 $17.12 $14.60/$17.50 0 9 155%
16 Oct 2026 $55.00 $0.01 $0.00/$0.70 0 52 81%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $37.50 $1.10 $1.00/$1.35 153 73 62%
16 Oct 2026 $40.00 $2.75 $2.35/$2.85 1 11 65%
16 Oct 2026 $35.00 $0.42 $0.35/$0.55 82 317 65%
16 Oct 2026 $42.50 $3.60 $3.80/$4.80 0 7 55%
16 Oct 2026 $32.50 $0.19 $0.00/$0.35 1 101 74%
16 Oct 2026 $45.00 $5.73 $5.90/$7.50 0 2 67%
16 Oct 2026 $30.00 $0.10 $0.05/$0.30 5 372 98%
16 Oct 2026 $47.50 $8.11 $8.20/$9.80 0 0 0%
16 Oct 2026 $27.50 $0.13 $0.00/$0.10 0 97 117%
16 Oct 2026 $50.00 $10.51 $10.40/$12.60 0 1 0%
16 Oct 2026 $25.00 $0.08 $0.00/$0.55 0 9 132%
16 Oct 2026 $22.50 $0.05 $0.00/$0.25 0 71 148%
16 Oct 2026 $55.00 $15.47 $15.40/$18.00 0 0 126%

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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