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Arm Holdings ARM

$316.41
−$16.15 (-4.86%)
Market open · Sep 24, 1:10 pm ET
After hours $331.84 -0.22%
Open$319.23
Prev close$332.56
Day range$304.16 – $326.00
Volume5.82M
Market cap$337.93B
P/E (TTM)322.9
Dividend yield

Average implied volatility across the listed chain right now: 84%. 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
25 Sep 2026 $317.50 $0.94 $1.00/$1.59 4 22 90%
25 Sep 2026 $315.00 $1.20 $1.07/$1.35 443 371 86%
25 Sep 2026 $320.00 $0.98 $0.88/$1.13 220 306 88%
25 Sep 2026 $312.50 $1.06 $0.85/$1.85 10 43 85%
25 Sep 2026 $322.50 $0.77 $0.47/$1.04 12 143 85%
25 Sep 2026 $310.00 $1.50 $1.46/$1.55 375 652 84%
25 Sep 2026 $325.00 $0.77 $0.40/$0.92 30 125 85%
25 Sep 2026 $307.50 $1.41 $1.56/$1.73 66 75 83%
25 Sep 2026 $327.50 $0.66 $0.34/$0.88 5 6 86%
25 Sep 2026 $305.00 $1.83 $1.70/$1.90 150 243 82%
25 Sep 2026 $330.00 $0.59 $0.44/$0.75 71 147 89%
25 Sep 2026 $302.50 $1.63 $1.69/$2.18 47 49 80%
25 Sep 2026 $332.50 $0.28 $0.00/$0.76 0 3 80%
25 Sep 2026 $300.00 $2.20 $2.19/$2.25 15,034 6,692 80%
25 Sep 2026 $335.00 $0.45 $0.07/$0.80 29 147 88%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
25 Sep 2026 $317.50 $73.66 $51.50/$55.15 0 0 83%
25 Sep 2026 $315.00 $57.50 $49.00/$52.20 1 1 76%
25 Sep 2026 $320.00 $76.15 $53.70/$57.80 0 15 84%
25 Sep 2026 $312.50 $68.69 $46.60/$50.50 0 0 82%
25 Sep 2026 $322.50 $78.63 $56.70/$60.20 0 0 91%
25 Sep 2026 $310.00 $66.21 $44.30/$48.20 0 4 82%
25 Sep 2026 $325.00 $81.12 $59.75/$61.80 0 3 90%
25 Sep 2026 $307.50 $63.72 $42.00/$45.65 0 0 80%
25 Sep 2026 $327.50 $83.60 $61.00/$64.75 0 0 82%
25 Sep 2026 $305.00 $43.50 $39.50/$43.50 2 4 79%
25 Sep 2026 $330.00 $66.34 $63.60/$67.45 1 4 89%
25 Sep 2026 $302.50 $58.75 $37.25/$41.10 0 0 78%
25 Sep 2026 $332.50 $88.58 $66.05/$69.70 0 0 87%
25 Sep 2026 $300.00 $40.65 $35.00/$38.25 10 23 74%
25 Sep 2026 $335.00 $91.07 $68.50/$72.15 0 0 87%

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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