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REGN$741.00 +0.19%+ Alert
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● 10 Oct · US closed · scored 15:49
● Sat 10 Oct 2026/US closed · opens Mon 14:30 BST/101 names scored today/last score 10:32 BSTResearch, not advice · every call is published at Proof

REGN

Regeneron Pharmaceuticals Inc
$741.00 · +0.19% vs $739.57 close · scored 15:49 · stale
Decision brief
BULLISH · 62/100
What changed
The read is broadly unchanged.
Evidence is stale — treat this read cautiously.
What would change the view
composite falls below +15 · confidence deteriorates materially from 62/100
For the read
options volume favours calls · open interest agrees with the read
Against / uncertainty
No material contradiction isolated.
The read
Strongly bullish, moderately evidenced, but it’s confirming price rather than calling it.
−100 bearish0bullish +100
+38.7 composite┆ +39.2 yesterday (−0.5)+11.0 vs a week ago
Evidence
62 / 100 · top 32% today
696 contracts · quality 81 · stability 0.72
hasn’t paid −0.01% · n=92,310
01

Why it’s +39

Method
What traded today · weight 62%
+26.7 pts
498 calls · 71.6%198 puts
bias +43.1 × 0.62
What’s on the books · weight 38%
+12.0 pts
2,309 call OI · 65.8%1,200 put OI
bias +31.6 × 0.38
Equals
+38.7
69% of the score comes from today’s volume, 31% from open interest. Disagree with either? See the method.
02

What changed: 43 days of tape against price

14d43d90d365d · Reader
tape composite (bars)— price◆ big one-day moves30d: price −8.73% · tape +0.2 · corr -0.03
◆ −100.0 in a day▼ low −58.4● peak +6408-2709-0309-1009-1809-2510-0210-09$854$735

Plain English: Over 30 days, price has fallen 8.73% while the tape has barely moved (+0.2). The two are drifting apart.

03

Should you trust it?

note
Some evidence, not a lot
confidence 62 (68th pct) · quality 81 · 696 contracts
note
Jumpy
0.72 vs 7-day rolling · choppiness 0
against
This kind of read hasn’t paid
strongly bullish · call-heavy · low liquidity → −0.01% avg, n=92,310
note
Tape is confirming, not predicting
price has led REGN’s tape by 1 day (r=-0.16, n=44)
note
Stretched vs its own history
today’s tape sits high relative to price
against
Our record on REGN is poor
31% hit rate on 276 closed calls · payoff 1.06×
04

Where the positions sit

calls tradedstrikeputs traded
$780
$775
$770
$765
$760
$757.5
$755
$752.5
$750
$747.5
$745
$740
$735
$730
$725
$720
$715
$710
$705
Spot $741.00 highlighted. The $890 strike holds the most open interest (the “wall”, 285). Near-dated expiry in the mix, so OI is noisier.
05

Our record on REGN

Proof
31%
hit rate · 276 closed
1.06×
payoff
+0.22%
avg return
9 Oct · 4h
$741.00 → $741.00
+0.00%flat
9 Oct · 4h
$740.88 → $741.00
+0.02%flat
9 Oct · 4h
$739.57 → $741.00
+0.19%hit
9 Oct · 4h
$739.57 → $741.00
+0.19%hit

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; 142 of these 276 calls were flat.

06

Catalysts & context

EPS surprise · last 4 quarters
+20.96%Q3 ’25
+5.65%Q4 ’25
+3.88%Q1 ’26
+36.51%Q2 ’26
Street Buy-leaningNext report — P/E 17.59 · fwd 13.38Beta 0.131 52w $541.00–$859.34IV rank —
Regeneron Pharmaceuticals Inc · Biotechnology
Strongly bullish, moderately evidenced. It’s confirming price rather than calling it.
−100 bearish0bullish +100
+38.7┆ +39.2 ydayevidence 62
hasn’t paid −0.01% · n=92,310
Why it’s +39
+26.7 volume · 72% calls+12.0 OI · 66% calls
43 days · tape bars, price line
◆ −100.008-2709-0309-1009-1809-2510-0210-09$854$735
Price −8.73%, tape +0.2 over 30 days. The two are drifting apart.
Should you trust it?
noteSome evidence, not a lot
confidence 62 (68th pct) · quality 81 · 696 contracts
noteJumpy
0.72 vs 7-day rolling · choppiness 0
againstThis kind of read hasn’t paid
strongly bullish · call-heavy · low liquidity → −0.01% avg, n=92,310
noteTape is confirming, not predicting
price has led REGN’s tape by 1 day (r=-0.16, n=44)
Ask about REGN
Why did the score rise from +28 to +39 this week?
It was mostly one day. The composite was +27.7 on 7 Oct, then rose to +38.4 on 8 Oct as the price moved from $736.50 to $742.12. It’s at +38.7 now.

Today’s +38.7 breaks down as +26.7 from volume and +12.0 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 · 45 ptsstock_scores · 15:49method · 62/38
Ask
Explain the $890 wallCompare REGN vs PURRAlert me before earnings