BillionToOne, Inc. Class A Common Stock (BLLN) options flow
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Options flow session · Last trade
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BLLN session snapshot
Bullflow recorded 1 BLLN options trades on Tuesday, October 27, 2026, totaling $80,320 in premium. Calls made up $0.00 (0.0%) across 0 trades and puts $80.32K (100.0%) across 1 trades.
1 trades were sweeps and 0 were blocks. 1 filled at or above the ask, 0 at or below the bid and 0 at the mid. The largest was a $80,320 sweep of 155 Nov 20, 2026 $105 Put trade at 13:49:04 ET, filled at the above ask.
BLLN closed at $114.07, up 2.34% from the prior close.
- Company
- BillionToOne, Inc. Class A Common Stock
- Exchange
- NASDAQ
- Sector
- Unavailable
- Close
- $114.07
BLLN options flow statistics
- Total premium
- $80.32K
- Recorded trades
- 1
- Call premium
- $0.00
- Put premium
- $80.32K
- Put/call premium ratio
- Unavailable (no call premium)
- Avg premium per trade
- $80.32K
- Calls / puts (trades)
- 0 / 1
- Sweeps / blocks
- 1 / 0
- At or above ask
- 1
- At or below bid
- 0
- Largest trade
- $80.32K
- Last trade
Where the premium went
in calls
$80.32K · 1 trades
Premium
Trade type
Fill side
BLLN largest options trades
| Time | Contract | C/P | Premium | Size | Fill | Type |
|---|---|---|---|---|---|---|
| BLLN Nov 20, 2026 $105 | Put | $80,320 | 155 | Above Ask | Sweep |
Each of the 1 largest trades had a different contract.
The 1 largest trades total $80.32K of $80.32K
BLLN gamma exposure
Gamma exposure is separate from this closing options flow summary. Additional data appears in the interactive view when available.
BLLN options flow questions
What was the largest BLLN options trade on October 27, 2026?
A $80,320 sweep of 155 BLLN Nov 20, 2026 $105 Put trade at 13:49:04 ET, filled at the above ask. It was the largest of 1 trades Bullflow recorded for BLLN that session.
How much BLLN options premium traded on October 27, 2026?
$80,320 across 1 recorded sweeps and blocks: $0 in calls (0 trades) and $80,320 in puts (1 trades).
Was BLLN options flow bullish or bearish on October 27, 2026?
Calls were 0.0% of premium. 0 of 1 trades filled at or below the bid and 1 at or above the ask. Premium and fill side do not show whether a trade opened or closed a position or was a hedge, so they do not establish direction on their own.
How often is BLLN options flow data updated?
The page shows a completed session (October 27, 2026, last trade 13:49:04 ET) and updates after the next trading day becomes historical. Intraday BLLN flow is in the Bullflow dashboard and API.
How to read this data
This summary covers recorded single-leg sweeps and blocks with positive premium, excluding cancelled trades. It describes the covered flow, not all options-market volume. Total premium is gross traded premium; it is not net buying pressure. The interactive dashboard can use different filters and may show different totals.
Calls, puts, and execution near the bid or ask provide context but do not establish whether a position was opened or closed, whether it was part of a hedge, or where the stock will move next. The session updates after the next trading day becomes historical.
Stock prices show regular-session candles delayed at least 15 minutes. The latest view refreshes during market hours; the flow-session view places recorded trades on their original date, using interpolated stock prices between candle samples. Gamma exposure shows its separately dated public closing snapshot.