Space and engineering stocks

Screening Filters

1. market_cap ≥ 5,000,000,000 (large / mid-to-large cap)

   • Purpose: Focus on established, sizable companies in the space- and engineering-related fields.
   • Rationale:
     • Larger aerospace and engineering firms are more likely to be involved in meaningful “space” projects (satellites, launch systems, defense space systems) and major engineering contracts.
     • Bigger companies usually have more transparent financials, better disclosure, and broader analyst coverage, which is useful for investors researching these sectors.

2. price ≥ 10

   • Purpose: Exclude very low-priced stocks that can be highly volatile or more speculative.
   • Rationale:
     • Many under‑$10 names in these sectors can be early-stage, distressed, or thinly traded, which may not be what you had in mind when asking for “space and engineering stocks.”
     • This helps keep the list focused on more established, institutionally investable names.

3. monthly_average_dollar_volume ≥ 1,000,000

   • Purpose: Ensure that any stock returned trades enough dollar volume to allow for practical entry and exit.
   • Rationale:
     • Space and engineering niches can include very illiquid small caps; this filter avoids situations where it’s hard to buy or sell without impacting the price.
     • Higher dollar volume typically means tighter spreads and better execution.

4. industry ∈ {Aerospace & Defense, Construction & Engineering, Machinery Tools Heavy Vehicles Trains & Ships}

   • Purpose: Directly target industries that align with “space” and “engineering.”
   • Rationale:
     • Aerospace & Defense: This is the core “space” bucket—satellites, launch services, defense space systems, and related aerospace technologies.
     • Construction & Engineering: Captures firms providing large-scale engineering, design, and infrastructure services—matching the “engineering” part of your request.
     • Machinery Tools Heavy Vehicles Trains & Ships: Includes companies building heavy industrial equipment, vehicles, and complex machinery—many of which support aerospace and engineering projects (e.g., components, heavy manufacturing, specialized tools).

5. is_index_component ∈ {GSPC (S&P 500), NDX (Nasdaq 100)}

   • Purpose: Limit results to the largest and most followed U.S. stocks within those sectors.
   • Rationale:
     • S&P 500 and Nasdaq 100 membership implies size, liquidity, and a minimum quality/financial stability threshold.
     • This narrows the universe to well-known, higher-quality aerospace and engineering companies, instead of small speculative names.

Why Results Match:

• The industry filters are directly aligned with “space” (Aerospace & Defense) and “engineering” (Construction & Engineering plus heavy machinery-related industries).
• The market cap, price, volume, and index membership filters refine that universe to larger, more liquid, and better-established stocks—those most likely to be recognizable, researchable, and investable representations of space and engineering themes.