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WST · West Pharmaceutical Services Inc · Options Chain

Track WST — free
Market Cap
$25.57B
Shares
70.38M

Options Chain

Underlying $361.60 · today Options Calculator

Positioning

Sep 18, 2026 · expires today · 90 contracts · mixed daily-bar sessions · Dec 30, 2025–Sep 18, 2026; 39 unknown
Put / call OI
0.22
Call-heavy positioning
Open interest
2,436
as of Sep 16, 2026
Volume
dated and unknown daily-bar sessions
Max pain
$310.00
$51.60 below spot

Open interest by strike · near the money

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator
OI Vol IV Δ Bid Ask Last Strike Last Bid Ask Δ IV Vol OI
$235.10 $238.40 $0.00 $5.00
$229.90 $233.40 $0.00 $5.00
$224.80 $228.40 $0.00 $5.00
$219.80 $223.40 $0.00 $5.00
$214.70 $218.40 $0.00 $5.00
$210.20 $213.40 $0.00 $5.00
$204.60 $208.40 $3.18 $0.00 $5.00 8 8
$200.30 $203.40 $3.81 $0.00 $5.00 8 8
$195.20 $198.40 $2.32 $0.00 $5.00 1 1
$189.80 $193.40 $0.00 $5.00
1 1 $184.90 $188.40 $199.50 $0.00 $5.00
$180.20 $183.40 $0.00 $5.00
1 1 $174.60 $178.40 $73.70 $0.00 $5.00
$169.70 $173.40 $4.40 $0.00 $5.00 1 1
$165.30 $168.40 $0.20 $0.00 $5.00 1 11
1 $160.20 $163.40 $86.53 $0.25 $0.00 $5.00 4 8
2 2 $149.90 $153.40 $53.20 $0.75 $0.00 $5.00 1
1 2 $139.60 $143.40 $40.70 $16.34 $0.00 $5.00 1 1
1 1 $129.80 $133.40 $45.80 $13.60 $0.00 $5.00 3 7
11 1 $120.00 $123.40 $70.96 $2.28 $0.00 $5.00 1 2
51 50 $110.00 $113.40 $90.20 $16.60 $0.00 $5.00 1 13
17 2 $99.80 $103.40 $79.80 $2.95 $0.00 $5.00 1 16
30 1 $89.60 $93.40 $70.70 $33.07 $0.00 $5.00 59 15
12 2 $80.00 $83.40 $62.10 $7.80 $0.00 $5.00 1 1
62 4 $70.00 $73.40 $75.00 $1.45 $0.00 $5.00 1 6
17 2 $59.90 $63.40 $65.00 $1.25 $0.00 $5.00 1 113
5 5 $49.70 $53.40 $53.53 $0.94 $0.00 $5.00 1 24
10 1 $39.60 $43.40 $47.44 $1.40 $0.00 $2.80 1 7
10 2 $29.50 $33.40 $10.74 $0.71 $0.00 $2.60 1 104
166 10 $19.70 $23.50 $25.90 $6.40 $0.00 $1.50 4 64
502 8 $10.10 $13.50 $17.30 $0.50 $0.00 $1.50 2 25
934 1 $1.15 $4.90 $3.64 $1.65 $0.00 $4.00 2 5
62 1 $0.00 $2.90 $0.05 $28.05 $6.50 $10.50 1
21 3 $0.00 $5.00 $1.38 $16.50 $20.30
41 1 $0.00 $5.00 $0.10 $26.50 $30.70
10 17 $0.00 $5.00 $1.07 $36.60 $39.80
10 26 $0.00 $5.00 $0.60 $46.60 $50.60
9 9 $0.00 $5.00 $4.59 $56.60 $59.80
9 9 $0.00 $5.00 $3.47 $66.60 $70.30
$0.00 $5.00 $76.60 $79.80
$0.00 $5.00 $86.60 $90.60
$0.00 $5.00 $110.50 $96.60 $100.40 2
1 1 $0.00 $5.00 $0.81 $106.60 $110.60
$0.00 $5.00 $116.60 $119.90
$0.00 $5.00 $126.60 $130.20
About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Dec 30, 2025–Sep 18, 2026; 39 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. The 25 strikes around the money are shown by default — switch to "All 45" for the wings. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 105770 CUSIP 955306105 13F (30d) 20 filings 19 filers Visit website Investor relations