WST options flow: unusual options activity in West Pharmaceutical Services Inc.

Updated 28 September 2026, 09:54 ET

Over the last week the tape recorded 2 unusual options prints in West Pharmaceutical Services Inc. (WST), $70K of tracked premium, leaning firmly bearish. Bullish premium was $0 against $70K bearish; $70K went into calls and $0 into puts, a put call ratio of 0.00. The largest print was $36K of WST 16 Oct 2026 $390 calls on 24 September 2026, swept at bid. The last session with prints, 24 September 2026, added 1 print and $36K of premium. WST closed at $370.44 on 25 September 2026, down 0.8%.

This week's unusual flow

Prints from 22 September 2026 to 24 September 2026, 2 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, $36K, is aimed at the 16 Oct 2026 expiry.

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, 24 September 2026

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

Price

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

Analysts

The most recent analyst targets on file, from 8 firms, have a median of $406, 9.6% 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 West Pharmaceutical Services Inc.

Exchange

NYSE

Sector

Health Care

Industry

Medical Equipment

Headquarters

Exton, Pennsylvania

Website

westpharma.com

West Pharmaceutical Services, Inc. designs, manufactures, and sells containment and delivery systems for injectable drugs and healthcare products. It operates in two segments, Proprietary Products and Contract-Manufactured Products. The company distributes its products through its sales force and distribution network.

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