The S&P 500 ETF (SPY) represents a broad range of companies, and while geopolitical stability is generally positive, the specific agreement between Guyana and Venezuela is not likely to have a significant direct impact on the ETF's performance in the short term.

As Chevron operates in regions close to the disputed area, the agreement to continue dialogue and avoid conflict escalation between Guyana and Venezuela reduces the geopolitical risk. This could lead to a more stable operating environment and potentially positive investor sentiment towards Chevron in the short term.

Exxon Mobil's presence in Guyana means that the company is directly affected by the geopolitical climate in the region. The agreement to avoid conflict escalation between Guyana and Venezuela could lead to a more secure and predictable environment for Exxon Mobil's operations, potentially benefiting the company's stock in the short term.