SEPN

Septerna, Inc.

NASDAQ · Common stock

39.35

+2.97 (+8.16%)

Close, Oct 20, 2026

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Structural summary

What is the structure, what changed, and what would invalidate it

Viridia Intelligence

Context across dimensions, not a rating

StructureExpanding rangeIntermediate-degree swings on the daily chart.

WaveUnresolvedZigzag complete, next move down (Pattern Confidence 70); the weekly count points the other way.

FibonacciZone aboveNearest confluence 40.75–41.14 (4 relationships), +4.1% from the close.

MomentumStrong3 months +15.1% (ahead of SPY by 12.2 points); 6 months +52.5%.

RegimeUptrend+0.1% vs the 50-day average, +25.3% vs the 200-day.

RiskNormal20-day volatility 54% vs 67% over the year; 1-year drawdown −26.0%; beta 0.97.

SEPN setup historyNot replayed yet; the track record fills in most-traded securities first.

Current structure

Price, swings and the preferred count on the chart

SEPN · 1DLoading bars…

SourceMassive, end of dayUpdated—MethodDaily bars, split-adjusted

Candidate interpretations

Every count shown passes every hard rule

Candidate interpretations

Ranked by Pattern Confidence

Counts ending at the latest intermediate swing high, 51.10 on Aug 12, 2026. 172 labelings tested, 115 broke a hard rule, 12+ remain.

Hard-rule evidence: why 115 labelings were eliminated

51Wave 2 always retraces less than 100% of wave 1
17Contracting triangle: C ends short of A's end, D short of B's end, and E short of C's end
15Wave 3 always travels beyond the end of wave 1
12Wave 4 always retraces less than 100% of wave 3
8Wave B ends short of the start of wave A (a zigzag is a sharp correction)
6Wave B retraces at least 90% of wave A

Method Every chain of 3–6 alternating pivots ending at the latest confirmed pivot is tested as each pattern; only counts with zero hard-rule failures are kept, then ranked by Pattern Confidence. Rules: rulebook.Engine pivots-1.0.0+rules-1.0.0+candidates-1.0.0+fib-1.0.1+rank-1.1.0+setup-1.0.1, bars to Oct 20, 2026

Fibonacci map

Confluence zones above and below the closeClose 39.35

39.35close

Bar length is the zone's strength (a weighted count of relationships, not a probability). Select a zone to see what forms it.

40.75 – 41.14+4.1% from the close

4 relationships · strength 2.8 · Minor degree

41.14ProjectionWave 5 = 61.8% of wave 1 · Minor · Essentials · secondary ratio
41.09RetracementMove after the correction retraces 100% of A–C · Minor · Viridia · secondary ratio
40.94ProjectionWave C = 161.8% of wave A · Minor · Essentials · secondary ratio
40.75RetracementCorrection retraces 38.2% of waves 1–5 · Minor · Basics

Method Targets come from the Fibonacci relationships the sources describe for the wave in progress, Elliott trend channels, the prior fourth wave of lesser degree, and 38.2–78.6% retracements of the latest swing. A zone is where two or more independent relationships fall within max(¼ ATR, 0.4%) of each other; strength counts them, weighting primary ratios and higher degrees. It is not a probability.

Evidence

The setup the preferred count implies, and how that kind of setup has done

Setup

Intermediate degree · from the preferred count

The intermediate-degree scenario was held back

Its levels didn't pass Viridia's checks: invalidation over 25% away. It's listed for review instead of shown.

NoteResearch scenario generated from Viridia's structural model. Not a recommendation.MethodA setup restates the preferred count as a trade: the entry (the close, or the level where the correction in progress most often ends), the stop where the count is wrong (a rule level, or the end of a finished pattern), and the count's own Fibonacci target. Reward:risk is measured from the middle of the entry range. A setup needs reward:risk of at least 1 : 1. It is research output from the wave count, not a recommendation or a forecast.

Engine details

Analysis engine: pivots-1.0.0+rules-1.0.0+candidates-1.0.0+fib-1.0.1+rank-1.1.0+setup-1.0.1
Bars analysed to: Oct 20, 2026
Price history: Automatic, updated nightly
Daily bars: 497 since Oct 25, 2024
Avg volume, 50 days: 422.4K
Dollar volume, 20 days: $15.9M
SEC CIK: 0001984086
Provider symbols: nasdaqtrader: SEPN · massive: SEPN
Listing changes: None since Sep 24, 2026

SourcePrices: Massive (end of day, split-adjusted). Listings: Nasdaq Trader, SECUpdatedOct 22, 2026, 8:00 AM EDTMethodSecurity master, daily snapshot diff

Structure at a glance

Daily chart, as of Oct 20, 2026

Since the count's last pivot (51.10, Aug 12, 2026) price has moved −23.0%, the way the count expects.12 of 12 rule-valid counts expect the current move to be down.Weekly count: flat wave C ↑, opposite direction

Close call.The top two counts are within 3 points. Treat the structure as unresolved until one is invalidated.

Preferred count

Zigzag up · complete, next move down ↓

A three-wave zigzag correction up looks complete, so the larger trend would normally resume down.

A-B-C from 4.17, Feb 18, 2025

Pattern Confidence70High

5 of 6 checks met

Key levels, preferred count

Reassess+29.9% from close

51.10

The pattern ended here. A move above it means its last wave is still going, so the pattern isn't complete.

Target, next move−43.8% from close

22.10

Move after the correction retraces 61.8% of A–C

Nearest confluence zone+4.1% from close

40.75–41.14

4 Fibonacci relationships meet here.

Alternate count

Impulse up · wave 4 ↓

Price is in wave 4 of a five-wave advance (impulse).

1-2-3 from 17.55, Nov 7, 2025

Pattern Confidence67Medium

4 of 5 checks met

Why this count is preferred · 5 met, 1 not met

Met

Wave B retraces under 90% of wave A (deeper B waves fit a flat better)
Wave C travels beyond the end of wave A (a failure is a truncation)
Wave C equals 61.8%, 100% or 123.6% of wave A
Alternate waves are related by a Fibonacci ratio within 5% (wave 5 to wave 1, C to A, or triangle legs at 61.8%), the more reliable kind of relationship
The count starts at the price extreme of the prior swing (a new trend begins where the old one ended)

Not met

Wave B retraces 38.2% to 85.4% of wave A

MethodPattern Confidence = (guidelines met + 2) ÷ (guidelines measured + 4), from the rulebook's guidelines, Fibonacci tendencies and wave-personality checks (wave 3 speed and volume, wave 5 volume, alternation in time, a start at the prior extreme), alternate waves in Fibonacci ratio, and the rarity of running flats. The alternate is the best-ranked count that tells a different story. It ranks the rule-valid counts against each other; it is not a probability of any outcome.

Structural summary

Viridia Intelligence

Current structure

Candidate interpretations

Candidate interpretations

Fibonacci map

Fibonacci map

Evidence

Setup

Engine details

Structure at a glance

What changed