Prothena Corporation plc Ordinary Shares (PRTA) options flow
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Options flow session · Last trade
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PRTA session snapshot
Bullflow recorded 1 PRTA options trades on Tuesday, October 20, 2026, totaling $33,532 in premium. Calls made up $33.53K (100.0%) across 1 trades and puts $0.00 (0.0%) across 0 trades, a put/call premium ratio of 0.00.
1 trades were sweeps and 0 were blocks. 0 filled at or above the ask, 1 at or below the bid and 0 at the mid. The largest was a $33,532 sweep of 958 Nov 20, 2026 $9 Call trade at 14:31:09 ET, filled at the bid.
PRTA closed at $8.50, up 0.24% from the prior close.
- Company
- Prothena Corporation plc Ordinary Shares
- Exchange
- NASDAQ
- Sector
- Unavailable
- Close
- $8.50
PRTA options flow statistics
- Total premium
- $33.53K
- Recorded trades
- 1
- Call premium
- $33.53K
- Put premium
- $0.00
- Put/call premium ratio
- 0.00
- Avg premium per trade
- $33.53K
- Calls / puts (trades)
- 1 / 0
- Sweeps / blocks
- 1 / 0
- At or above ask
- 0
- At or below bid
- 1
- Largest trade
- $33.53K
- Last trade
Where the premium went
in calls
$33.53K · 1 trades
Premium
Trade type
Fill side
PRTA largest options trades
| Time | Contract | C/P | Premium | Size | Fill | Type |
|---|---|---|---|---|---|---|
| PRTA Nov 20, 2026 $9 | Call | $33,532 | 958 | Bid | Sweep |
Each of the 1 largest trades had a different contract.
The 1 largest trades total $33.53K of $33.53K
PRTA gamma exposure
Gamma exposure is separate from this closing options flow summary. Additional data appears in the interactive view when available.
PRTA options flow questions
What was the largest PRTA options trade on October 20, 2026?
A $33,532 sweep of 958 PRTA Nov 20, 2026 $9 Call trade at 14:31:09 ET, filled at the bid. It was the largest of 1 trades Bullflow recorded for PRTA that session.
How much PRTA options premium traded on October 20, 2026?
$33,532 across 1 recorded sweeps and blocks: $33,532 in calls (1 trades) and $0 in puts (0 trades).
Was PRTA options flow bullish or bearish on October 20, 2026?
Calls were 100.0% of premium (put/call premium ratio 0.00). 1 of 1 trades filled at or below the bid and 0 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 PRTA options flow data updated?
The page shows a completed session (October 20, 2026, last trade 14:31:09 ET) and updates after the next trading day becomes historical. Intraday PRTA 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.