Oil Prices: OIH.MX, tracking oil service companies, is heavily influenced by crude oil prices. Rising oil boosts exploration, driving up demand for these services and thus OIH.MX.

Energy Sector Performance: The overall health and sentiment surrounding the energy sector significantly impacts OIH.MX. Positive outlooks lead to higher valuations.

Interest Rates: Interest rate changes can affect borrowing costs for oil service companies. Higher rates may reduce investment, impacting OIH.MX negatively.

Geopolitical Events: Global events affecting oil supply and demand, such as political instability or conflicts, can create volatility in oil prices and, consequently, OIH.MX.

Company Earnings: The financial performance of companies within the OIH.MX, such as Schlumberger or Halliburton, can directly impact the ETF's price.

Inflation: Inflation erodes the value of future earnings. Higher inflation can lead to increased costs for oil service companies, potentially impacting OIH.MX negatively.

Technological Advancements: New technologies that improve efficiency or lower costs in oil exploration and production can affect the demand for traditional oil services, thus influencing OIH.MX.