Today, a major company gets itself listed on stock exchanges so that people can buy a portion of the company while it can raise money. While the distances and time lags involved aren't much of a concern in the small-ish blue marble we live on, it does create a problem for stuff like interplanetary stock trade. Average time lag between Mars (the red marble) and Earth (the blue marble) is between ~4 minutes and ~22 minutes, depending upon the relative position of the planets in their orbits at the time. Any news on Earth reaches Mars 4 to 22 minutes later; any news from Mars takes the same time to reach Earth, which frankly is scary in stock trading.
How do I design a resilient system which is not affected by time constraints between planets?
This question is set in the real physics world. Relativity still holds, and, as of current (story) timeline, nothing ever discovered travels faster than light.