Investors are regaining some appetite for risk amid rising optimism that the conflict won't spill over into a broader regional crisis.

As Israel and Iran exchanged more attacks, stock markets mostly rose even as worries remained about possible oil supply interruptions.

Stock futures rebounded slightly early Monday as the spike in oil prices due to the escalating conflict between Israel and Iran eased for a moment. Stock gains were muted as investors remained concerned about the rising geopolitical risk to the global economy.