Oppty · Contract evidence
← Contract historyOI Formation & Direction
ETHA · Jul 17, 2026 · $14 call
ETHA260717C00014000
Two-stage assessment
Confirmed net formation
OI increased by 19 contracts after the source session.
- Initiation evidence
- Suggestive tape pressure · Ask-led
- Underlying implication
- Consistent with bullish call accumulation
Settlement arithmetic
Formation window
- Source trade date
- June 29, 2026Tape session
- Baseline OI
- 6,203OI visible on source date
- Settlement observation
- June 30, 2026Next returned trading row
- Settled OI
- 6,222Next observation
- OI change
- +19Settled minus baseline
- Trade-day volume
- 75Bound denominator
- Net-formation ratio
- 25.33%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
- 44Raw lower bound: 0
- Bid
- 29Raw lower bound: 0
- Mid
- 2Raw lower bound: 0
- Neutral
- 0Raw 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
- 7Flags may overlap
- Stock multileg
- 0Flags may overlap
- Cross
- 0Flags may overlap
- Floor
- 0Flags may overlap
- Clamped structure allowance
- 7Sum 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
- 12Returned minute buckets
- Largest minute
- 3445.33% of daily volume
- Ask/bid premium imbalance
- +13.03%Positive is ask-premium led
- IV range
- 53.36% – 57.37%Descriptive only
- Daily reconciliation
- ReconciledMinute 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
If a dealer was the counterparty, carried this position without portfolio offsets, and delta-hedged it, the mechanical scenario could require the dealer to buy underlying. This is not verified flow.
confirmed_net_formation
side_bias_only