REGN options flow: unusual options activity in Regeneron Pharmaceuticals, Inc.

Updated 28 September 2026, 09:54 ET

Over the last week the tape recorded 23 unusual options prints in Regeneron Pharmaceuticals, Inc. (REGN), $1.5M of tracked premium, close to even between bullish and bearish premium. Bullish premium was $507K against $501K bearish; $1.0M went into calls and $450K into puts, a put call ratio of 0.45. The largest print was $227K of REGN 16 Oct 2026 $805 calls on 21 September 2026, executed at ask. The last session with prints, 25 September 2026, added 7 prints and $434K of premium. REGN closed at $788.04 on 25 September 2026, down 1.0%.

This week's unusual flow

Prints from 21 September 2026 to 25 September 2026, 5 sessions. Delayed tier: every print is shown twenty minutes after it executed, and the page is rebuilt after each session.

Net premium is bullish minus bearish premium. The put call ratio is put premium divided by call premium, weighted by money rather than by contract count. Sweeps is the share of prints executed across several exchanges at once. Read the guide: Reading the Pulse.

Largest prints of the week

Size above open interest means the trade opened a position larger than everything that existed in the contract the night before. Above ask and below bid are the most aggressive executions. Read the guide: Size versus open interest.

Where the money is aimed

The most premium, $531K, is aimed at the 16 Oct 2026 expiry; the nearest expiry with unusual prints is 25 Sep 2026.

A print in a contract expiring this week is a view about the next few days, often about a known event; a print months out is a different kind of statement. Read the guide: 0DTE options flow.

The last session, 25 September 2026

Every print in REGN with its full detail, the live tape, one tap filters and saved screeners: open REGN in Options Sentiment Screener.

Price

The live quote and the price chart sit beside the ticker's flow in the app: open REGN in Options Sentiment Screener.

Analysts

The most recent analyst targets on file, from 17 firms, have a median of $824, 4.6% above the last close. The last 90 days brought 1 upgrade.

Calls bought at a strike above the average target are a bet that the analysts are too cautious; puts far below the price in a name they like are protection or a strong disagreement. Read the guide: Reading one ticker's flow.

About Regeneron Pharmaceuticals, Inc.

Exchange

Nasdaq

Sector

Health Care

Industry

Pharmaceutical Products

Headquarters

Tarrytown, New York

Website

regeneron.com

Regeneron Pharmaceuticals, Inc. discovers, invents, develops, manufactures, and commercializes medicines for treating various diseases worldwide. The company's products include EYLEA injection to treat wet age-related macular degeneration and diabetic macular edema. Dupixent injection is used to treat atopic dermatitis and asthma in adults and pediatrics. Kevzara solution for treating rheumatoid arthritis in adults.

In the same sector

Flow pages for other Health Care names in the S&P 500:

LLY Eli Lilly & Co.JNJ Johnson & JohnsonABBV AbbVie Inc.MRK Merck & Co. Inc.UNH UnitedHealth Group Inc.TMO Thermo Fisher Scientific Inc.AMGN Amgen Inc.GILD Gilead Sciences, Inc.

Learn

• What unusual options activity means
• Reading one ticker's flow
• Sweeps, blocks and where a trade printed
• Size versus open interest
• Bullish or bearish, how a print's sentiment is inferred
• The conviction score and whale prints