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NX$18.24 +0.00%+ Alert
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● 21 Oct · US open · scored 22:38
● Wed 21 Oct 2026/US open/463 names scored today/last score 16:53 BSTResearch, not advice · every call is published at Proof

NX

Quanex Building Products Corp
$18.24 · +0.00% vs $18.24 close · scored 22:38 · stale
Decision brief
NEUTRAL · 48/100
What changed
No prior comparable read.
Evidence is stale — treat this read cautiously.
What would change the view
composite leaves the neutral band · confidence deteriorates materially from 48/100
For the read
No strong confirming evidence isolated.
Against / uncertainty
open interest leans against the read · signal stability is low
The read
Neutral, thinly evidenced, but it’s confirming price rather than calling it.
−100 bearish0bullish +100
+3.0 composite+0.0 vs a week ago
Evidence
48 / 100 · top 55% today
65 contracts · quality 50 · stability 0.00
neutral · −2.36% · n=9,769
01

Why it’s +3

Method
What traded today · weight 62%
−2.9 pts
31 calls · 47.7%34 puts
bias −4.6 × 0.62
What’s on the books · weight 38%
+5.9 pts
164 call OI · 57.7%120 put OI
bias +15.5 × 0.38
Equals
+3.0
33% of the score comes from today’s volume, 67% from open interest. Disagree with either? See the method.
02

What changed: 37 days of tape against price

14d43d90d365d · Reader
tape composite (bars)— price◆ big one-day moves30d: price −17.91% · tape −43.7 · corr 0.27
● peak +71▼ low −56.6◆ −70.8 in a day09-0409-1009-1609-2209-2810-0410-17$23$18

Plain English: Over 30 days, price has fallen 17.91% while the tape has faded 43.7 points. They agree.

03

Should you trust it?

against
Thin evidence
confidence 48 (45th pct) · quality 50 · 65 contracts
note
Jumpy
0.00 vs 7-day rolling · choppiness 0
note
Neutral reads make no call
neutral · balanced · low liquidity → −2.36% avg, n=9,769
note
Tape is confirming, not predicting
price has led NX’s tape by 2 days (r=-0.36, n=36)
against
Our record on NX is poor
8% hit rate on 802 closed calls · payoff 0.81×
04

Where the positions sit

calls tradedstrikeputs traded
$35
$30
$25
$22.5
$20
$17.5
$15
WALL · OI 88
$12.5
$10
$5
$2.5
Spot $18.24 highlighted. The $15 strike holds the most open interest (the “wall”, 88). Near-dated expiry in the mix, so OI is noisier.
05

Our record on NX

Proof
8%
hit rate · 802 closed
0.81×
payoff
+0.00%
avg return
9 Oct · 4h
$18.24 → $18.24
+0.00%flat
9 Oct · 4h
$18.54 → $18.24
−1.62%miss
9 Oct · 4h
$18.54 → $18.24
−1.62%miss
9 Oct · 4h
$18.54 → $18.24
−1.62%miss

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; 688 of these 802 calls were flat.

06

Catalysts & context

EPS surprise · last 4 quarters
+56.46%Q4 ’25
+83.11%Q1 ’26
+19.85%Q2 ’26
+16.66%Q3 ’26
Street Buy-leaningNext report — P/E 18.35 · fwd 10.34Beta 0.996 52w $11.04–$23.33IV rank —
Quanex Building Products Corp · Building
Neutral, thinly evidenced. It’s confirming price rather than calling it.
−100 bearish0bullish +100
+3.0evidence 48
neutral · −2.36% · n=9,769
Why it’s +3
−2.9 volume · 48% calls+5.9 OI · 58% calls
37 days · tape bars, price line
◆ −70.809-0409-1009-1609-2209-2810-0410-17$23$18
Price −17.91%, tape −43.7 over 30 days. The two agree.
Should you trust it?
againstThin evidence
confidence 48 (45th pct) · quality 50 · 65 contracts
noteJumpy
0.00 vs 7-day rolling · choppiness 0
noteNeutral reads make no call
neutral · balanced · low liquidity → −2.36% avg, n=9,769
noteTape is confirming, not predicting
price has led NX’s tape by 2 days (r=-0.36, n=36)
Ask about NX
Why did the score drop from +67 to +3 this week?
It was mostly one day. The composite was +68.0 on 7 Oct, then fell to +3.0 on 8 Oct as the price moved from $18.85 to $18.85. It’s at +3.0 now.

Today’s +3.0 breaks down as −2.9 from volume and +5.9 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 · 37 ptsstock_scores · 22:38method · 62/38
Ask
Explain the $15 wallCompare NX vs BNCAlert me before earnings