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Small Cap
Oil & Gas Equipment & Services
Stocks Ranked by
Market Capitalization

Small Cap Oil & Gas Equipment & Services Stocks at a Glance

Oilfield services and equipment companies provide the contract drilling, seismic surveys, pumping, tool rental, and machinery behind oil and gas production. Revenue follows producers' capital budgets, amplifying oil-price cycles in both directions.

There are 17 small cap Oil & Gas Equipment & Services stocks — companies in the Oil & Gas Equipment & Services industry with a market cap between $250M and $2B — worth a combined $17.2B.

The largest by market cap are NextDecade (NEXT) at $1.96B, WaterBridge Infrastructure LLC (WBI) at $1.75B and Atlas Energy Solutions (AESI) at $1.49B.

Among institutional investors, EagleRock Land (EROK) drew the most net new fund positions in Q2 2026: 74 funds opened new positions.

  • Combined market cap: $17.2B across 17 stocks.
  • Small Cap: market cap between $250M and $2B.
  • Largest constituent: NextDecade (NEXT), $1.96B market cap.
  • Most net new fund positions in Q2 2026: EagleRock Land (EROK), +74 holders.

Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q2 2026.