ARM · expected move and max pain by expiry
Arm Holdings is priced to move 7.2% by 2026-Oct-16, with max pain at 270.00.
Options price a ±7.18% move (about $18.33) by 2026-Oct-16 (Fri), a range of 237.06 to 273.72 from the last price of 255.39. Max pain for that expiry is 270.00.
ARM
Arm Holdings plc
Last
255.39 +0.15 (0.1%)
Next expiry move
±7.18% 2 days
Implied vol
66.7% 9 days
Put / call
0.79
Pre-market
Fetched 2026-10-14, 05:37:58 AM ET
Fetched 2026-10-14, 05:37:58 AM ET
expected range last price 255.39 max painAxis 196 to 315, shared by every row
Expiry
Expected range (1 SD)
Expected move
Max pain
Odds inside
2026-Oct-16Fri, 2 days
237.06
273.72
Expected move±7.18%±$18.33
Max pain270.005.7% above last price
Odds of closing inside68%put/call 0.79
2026-Oct-23Fri, 9 days
228.63
282.15
Expected move±10.48%±$26.76
Max pain280.009.6% above last price
Odds of closing inside68%put/call 1.28
2026-Oct-30Fri, 16 days
219.36
291.42
Expected move±14.11%±$36.03
Max pain290.0013.6% above last price
Odds of closing inside69%put/call 0.73
2026-Nov-06Fri, 23 days
206.73
304.05
Expected move±19.05%±$48.66
Max pain290.0013.6% above last price
Odds of closing inside69%put/call 1.71
2026-Nov-13Fri, 30 days
202.14
308.64
Expected move±20.85%±$53.25
Max pain280.009.6% above last price
Odds of closing inside69%put/call 1.45
Key levels from open interest
250.00 / 260.00
The heaviest put open interest near the price sits at 250.00 and the heaviest call open interest at 260.00, weighted toward strikes close to the last price. Price sometimes gravitates toward large open interest into expiry.
ARM max pain by expiry
Arm Holdings's max pain for 2026-Oct-16 is 270.00, 5.7% above the last price. It is the strike at which the calls and puts open for that expiry would pay out the least in total, computed from open interest. Price sometimes drifts toward it in the final session because of dealer hedging; treat it as a reference level, not a target. How max pain is calculated.
| Expiry | Max pain | From last price | Put/call |
|---|---|---|---|
| 2026-Oct-16 Fri | 270.00 | +5.7% | 0.79 |
| 2026-Oct-23 Fri | 280.00 | +9.6% | 1.28 |
| 2026-Oct-30 Fri | 290.00 | +13.6% | 0.73 |
| 2026-Nov-06 Fri | 290.00 | +13.6% | 1.71 |
| 2026-Nov-13 Fri | 280.00 | +9.6% | 1.45 |
ARM put/call ratio
The put/call ratio for the 2026-Oct-16 expiry is 0.79: close to even between puts and calls. Readings well below 0.7 are often read as complacent and above 1.2 as fearful, and extremes are sometimes taken as contrarian signals, but on index products like SPY a high ratio is normal because puts are bought as insurance. It is a sentiment gauge, not a direction call. What the ratio measures and what it does not, or compare it with every tracked stock's put/call ratio today.
Stayed in range, 13 forecasts
46%
ARM finished inside the expected range we showed 46% of the time, across every forecast checked since 2026-Oct-02. Correctly priced options would give about 68%; higher means its options expected bigger moves than happened.
Moved vs expected
131%
How big ARM's moves were compared with what its options priced in; 100% means priced right, below means overpriced. On average it moved 8.19% against an expected range of ±7.82%. Left the range: 3 up, 4 down. How this is worked out.
By days before expiry
2 to 7 days: 14% stayed in range (7)
Forecasts grouped by how many days before expiry they were made. Machine-readable: /api/history/ARM; sitewide: track record.
Reading the ARM expected move table
Each row is one expiry. The shaded band is the one-standard-deviation range the option chain implies for ARM on that date: the market gives roughly a two-in-three chance that ARM closes inside it and a one-in-three chance it closes outside. The black tick is the last traded price, 255.39. The diamond is max pain, the strike where option holders would collect the least if the stock settled there.
The range widens with time because uncertainty compounds with the square root of time: the 2026-Nov-13 range (±20.85%) is wider than the 2026-Oct-16 range (±7.18%) even though the daily volatility behind both is the same. Read the methodology for the formulas, or the guide to what the expected move means in practice.
Figures are derived from delayed public option data and recalculated through the trading day. Nothing on this page is investment advice. Machine-readable version: /api/expected-move/ARM. Every ticker the site tracks is listed at /stocks.
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