Giant planets that are born into chaotic environments are more likely to be pulled outward, away from their host stars, after forming. On the other hand, planets born into more stable, less crowded environments are more likely to be sucked inward over time.

See the source article by following the link below:
Giant planets that are born into chaotic environments are more likely to be pulled outward, away from their host stars, after forming. On the other hand, planets born into more stable, less crowded environments are more likely to be sucked inward over time.