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ARM$266.28 +0.00%+ Alert
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● 11 Oct · US closed · scored 13:56
● Sun 11 Oct 2026/US closed · opens Mon 14:30 BST/145 names scored today/last score 13:57 BSTResearch, not advice · every call is published at Proof

ARM

Arm Holdings PLC
$266.28 · +0.00% vs $266.28 close · scored 13:56 · fresh
Decision brief
NEUTRAL · 67/100
What changed
No prior comparable read.
Evidence is current.
What would change the view
composite leaves the neutral band · confidence deteriorates materially from 67/100
For the read
options volume favours puts
Against / uncertainty
No material contradiction isolated.
The read
Neutral, moderately evidenced, but it’s confirming price rather than calling it.
−100 bearish0bullish +100
−6.8 composite−20.4 vs a week ago
Evidence
67 / 100 · top 19% today
37,137 contracts · quality 82
neutral · −0.53% · n=4,464
01

Why it’s −7

Method
What traded today · weight 62%
−7.7 pts
16,253 calls · 43.8%20,884 puts
bias −12.5 × 0.62
What’s on the books · weight 38%
+0.9 pts
78,039 call OI · 51.2%74,314 put OI
bias +2.4 × 0.38
Equals
−6.8
89% of the score comes from today’s volume, 11% from open interest. Disagree with either? See the method.
02

What changed: 46 days of tape against price

14d43d90d365d · Reader
tape composite (bars)— price◆ big one-day moves30d: price +0.37% · tape −32.0 · corr 0.04
◆ −43.5 in a day● peak +57▼ low −6.808-2709-0309-1009-1709-2410-0110-0810-11$333$235

Plain English: Over 30 days, price has risen 0.37% while the tape has faded 32.0 points. The two are drifting apart.

03

Should you trust it?

note
Some evidence, not a lot
confidence 67 (81th pct) · quality 82 · 37,137 contracts
note
Neutral reads make no call
neutral · balanced · mid liquidity → −0.53% avg, n=4,464
note
Tape is confirming, not predicting
price has led ARM’s tape by 3 days (r=-0.26, n=45)
note
Stretched vs its own history
today’s tape sits low relative to price
against
Our record on ARM is poor
31% hit rate on 520 closed calls · payoff 1.70×
04

Where the positions sit

calls tradedstrikeputs traded
$290
$287.5
$285
$282.5
$280
$277.5
$275
$272.5
$270
$267.5
$265
$262.5
$260
$257.5
$255
$252.5
$250
$247.5
$245
Spot $266.28 highlighted. The $350 strike holds the most open interest (the “wall”, 7,423). Near-dated expiry in the mix, so OI is noisier.
05

Our record on ARM

Proof
31%
hit rate · 520 closed
1.70×
payoff
+1.05%
avg return
10 Oct · 4h
$265.93 → $265.93
+0.00%flat
10 Oct · 4h
$266.28 → $265.93
−0.13%hit
10 Oct · 4h
$266.28 → $266.28
+0.00%flat
10 Oct · 4h
$266.28 → $266.28
+0.00%flat

One rule everywhere: a move of 0.05% or less is flat, and flat is not a hit. That is the same rule Proof uses; 276 of these 520 calls were flat.

06

Catalysts & context

EPS surprise · last 4 quarters
+15.66%Q3 ’25
+4.57%Q4 ’25
+2.11%Q1 ’26
+10.81%Q2 ’26
Street Buy-leaningNext report — P/E 309.52 · fwd 127.19Beta 3.785 52w $100.02–$452.70IV rank —
Arm Holdings PLC · Semiconductors
Neutral, moderately evidenced. It’s confirming price rather than calling it.
−100 bearish0bullish +100
−6.8evidence 67
neutral · −0.53% · n=4,464
Why it’s −7
−7.7 volume · 44% calls+0.9 OI · 51% calls
46 days · tape bars, price line
◆ −43.508-2709-0309-1009-1709-2410-0110-0810-11$333$235
Price +0.37%, tape −32.0 over 30 days. The two are drifting apart.
Should you trust it?
noteSome evidence, not a lot
confidence 67 (81th pct) · quality 82 · 37,137 contracts
noteNeutral reads make no call
neutral · balanced · mid liquidity → −0.53% avg, n=4,464
noteTape is confirming, not predicting
price has led ARM’s tape by 3 days (r=-0.26, n=45)
noteStretched vs its own history
today’s tape sits low relative to price
Ask about ARM
Why did the score drop from +14 to −7 this week?
It moved over several days. The composite was +21.1 on 7 Oct, then fell to +10.8 on 8 Oct as the price moved from $295.15 to $294.37. It’s at −6.8 now.

Today’s −6.8 breaks down as −7.7 from volume and +0.9 from open interest. I can’t split past days the same way: the stored history keeps call/put volume but not open interest for past days.
tape_history · 46 ptsstock_scores · 13:56method · 62/38
Ask
Explain the $350 wallCompare ARM vs INTCAlert me before earnings