Regeneron Pharmaceuticals (REGN) options flow
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Options flow session · Last trade
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REGN session snapshot
Bullflow recorded 1 REGN options trades on Tuesday, October 27, 2026, totaling $375,870 in premium. Calls made up $375.87K (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 $375,870 sweep of 88 Jan 15, 2027 $840 Call trade at 10:46:28 ET, filled at the bid.
REGN closed at $816.10, up 1.04% from the prior close. By premium, REGN ranked 3 of 3 among the related tickers below.
- Company
- Regeneron Pharmaceuticals Inc
- Exchange
- NASDAQ
- Sector
- Healthcare
- Close
- $816.10
REGN options flow statistics
- Total premium
- $375.87K
- Recorded trades
- 1
- Call premium
- $375.87K
- Put premium
- $0.00
- Put/call premium ratio
- 0.00
- Avg premium per trade
- $375.87K
- Calls / puts (trades)
- 1 / 0
- Sweeps / blocks
- 1 / 0
- At or above ask
- 0
- At or below bid
- 1
- Largest trade
- $375.87K
- Last trade
Where the premium went
in calls
$375.87K · 1 trades
Premium
Trade type
Fill side
REGN largest options trades
| Time | Contract | C/P | Premium | Size | Fill | Type |
|---|---|---|---|---|---|---|
| REGN Jan 15, 2027 $840 | Call | $375,870 | 88 | Bid | Sweep |
Each of the 1 largest trades had a different contract.
The 1 largest trades total $375.87K of $375.87K
REGN gamma exposure
Gamma exposure is separate from this closing options flow summary. Additional data appears in the interactive view when available.
REGN options flow questions
What was the largest REGN options trade on October 27, 2026?
A $375,870 sweep of 88 REGN Jan 15, 2027 $840 Call trade at 10:46:28 ET, filled at the bid. It was the largest of 1 trades Bullflow recorded for REGN that session.
How much REGN options premium traded on October 27, 2026?
$375,870 across 1 recorded sweeps and blocks: $375,870 in calls (1 trades) and $0 in puts (0 trades).
Was REGN options flow bullish or bearish on October 27, 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 does REGN options flow compare with related stocks?
REGN ranked 3 of 3 by premium on Oct 27, 2026 among the tickers shown here. MRNA $25.02M, BSX $973.54K, REGN $375.87K led; REGN recorded $375.87K.
How often is REGN options flow data updated?
The page shows a completed session (October 27, 2026, last trade 10:46:28 ET) and updates after the next trading day becomes historical. Intraday REGN 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.