Oppty · Contract evidence
← Contract historyOI Formation & Direction
WDC · Aug 21, 2026 · $300 put
WDC260821P00300000
Two-stage assessment
Data conflict
The returned counts cannot safely support direction attribution.
- Initiation evidence
- Indeterminate · Unknown
- Underlying implication
- Underlying implication unresolved
Attribution is disabled because the returned daily counts conflict. No directional implication has been assigned.
Settlement arithmetic
Formation window
- Source trade date
- June 26, 2026Tape session
- Baseline OI
- 748OI visible on source date
- Settlement observation
- June 29, 2026Next returned trading row
- Settled OI
- 6,221Next observation
- OI change
- +5,473Settled minus baseline
- Trade-day volume
- 6,324Bound denominator
- Net-formation ratio
- 86.54%OI change ÷ volume
Bound-first attribution
Side partitions & lower bounds
Each raw bound is max(0, OI change − (volume − side volume)).
A positive value is the minimum net formation forced into that quote-side bucket.
- Ask
- 6,289Raw lower bound: 5,438
- Bid
- 34Raw lower bound: 0
- Mid
- 1Raw lower bound: 0
- Neutral
- 1Raw lower bound: 0
- Clean ask
- 0Side volume after allowing all flagged structure to contaminate this bucket
- Clean bid
- 0Side volume after allowing all flagged structure to contaminate this bucket
Conservative allowance
Flagged structure
The clean dominant-side bound allows every flagged contract to contaminate that side. Because flags can overlap, their sum is capped at daily volume.
- Multileg
- 4Flags may overlap
- Stock multileg
- 0Flags may overlap
- Cross
- 0Flags may overlap
- Floor
- 6,065Flags may overlap
- Clamped structure allowance
- 6,069Sum capped at total volume
Context only
Intraday corroboration
Minute clustering, premium, and IV describe the tape. They cannot create or increase a mathematical bound.
- Active minutes
- 25Returned minute buckets
- Largest minute
- 6,06595.90% of daily volume
- Ask/bid premium imbalance
- +98.78%Positive is ask-premium led
- IV range
- 108.40% – 116.97%Descriptive only
- Daily reconciliation
- MismatchMinute side totals versus daily side totals
Interpretation boundaries
What this report cannot verify
Motive and identity remain unknown
These aggregates cannot distinguish speculation, hedging, overwriting, participant capacity, or verified open/close labels.
Conditional dealer mechanics
No dealer hedge scenario is shown while initiation bias is unresolved.
side_partition_mismatch
intraday_partition_mismatch