Wrong option contract: check expiry, strike and right

Quick answer

An option needs more than an underlying symbol. Check expiry, strike, call or put, trading class, and multiplier. Similar-looking contracts can represent different settlement or product details.

Educational software guidance. Trading involves risk. Read the financial and information disclaimers.

Step by step

1 Find the intended option in the TWS chain or watchlist.
In Mosaic, File → Option Chain opens the option chain for the underlying.
The option chain lists calls and puts by strike for each expiry; pick the exact row you intend to trade.
2 Open Description and record its full identity.
3 Compare every option field with the alert generator and app mapping.
4 Correct the mismatched field in the supported setup.
5 Resolve the contract again and check it before a paper order test.

A practical example

Two rows show the same strike but one is a call and the other is a put. A short symbol in an alert may hide that difference. Open the full contract and compare every option field. Do the same for expiry and trading class. The test is an exact match, not a name that looks roughly right in a small cell.

Illustrative scenario, not a record of a trade placed during this review.

Screen reference

TWS stock Description showing SMART route, NASDAQ primary exchange, currency, contract ID, minimum tick and frozen data status — This stock is an example of the fields to compare. SMART routing and Primary Exchange are separate fields. The observed feed is Frozen and the market is closed; this is not a live-price or trading recommendation. Captured in TWS paper mode on 3 October 2026. Open the image for full size.

How to confirm the result The resolved option should match the intended expiry, strike, right, and trading class exactly.

Mistake to avoid

Do not assume all options with the same strike and date are the same contract.

Common questions

What does right mean?

It shows a call or a put in the contract definition.

Does the stock symbol identify the option?

No. The option’s extra contract fields are needed.

Find an instrument’s full contract details in TWS Wrong stock listing in TWS: check primary exchange TradingView and TWS show different futures expiries TWS error 200: contract not found or ambiguous

Financial and information disclaimers

Financial disclaimer

These guides explain software. They are for education, not financial, investment, tax, or legal advice. No example is a suggestion to buy or sell a product or use a trading strategy. Trading can lose money, including all funds you put at risk. With margin, futures, short sales, or some options, losses can exceed your starting funds. Automation can fail, send duplicate orders, or act late. Stops do not guarantee a fill or a price. Review your orders and positions, and seek advice from a qualified professional for your own needs. Paper trades, examples, and past results do not predict live results or promise a profit.

Information disclaimer

This is general help based on the sources and check date shown on the page. Screens, settings, fees, data access, and product support can change or differ by app version, account, country, and broker. The content may contain errors or become out of date; accuracy, completeness, and continuous service are not guaranteed. Check current broker and app instructions before acting. Screenshots show where controls are; they do not prove that an order test passed. This guide does not replace broker terms or risk notices. References to IBKR and TradingView identify their products and do not imply their endorsement of this guide.