Purchase stock

Screening Filters

1. region = US

• Purpose: Limits the search to stocks in the U.S. market.
• Rationale: Since the user asked to “Purchase stock INJ,” this filter focuses the results on U.S.-listed securities, which is the most likely market context for a stock purchase request.

2. list_exchange = XNYS, XNAS, XASE

• Purpose: Restricts results to stocks listed on the New York Stock Exchange, Nasdaq, and NYSE American.
• Rationale: These are the major U.S. stock exchanges where most actively traded equities are listed. This helps ensure the screening surfaces liquid, investable stocks that are readily accessible for purchase.

3. user_watchlist = False

• Purpose: Excludes stocks already on the user’s watchlist.
• Rationale: This makes the screener look for new candidates rather than repeating names the user is already tracking, which is useful when the goal is to identify a stock to buy.

Why Results Match:

• The filters together narrow the universe to tradable U.S. exchange-listed stocks, which fits a purchase-oriented stock query.
• They improve relevance by excluding non-U.S. markets and non-major listings, helping surface practical buying candidates.
• Excluding watchlist holdings keeps the results focused on fresh opportunities, which is useful if the user is looking for a stock to purchase rather than simply review existing ideas.