Jim Cramer warned that SpaceX's planned IPO could fuel speculation, distort valuations and pressure markets if share supply is tightly controlled.

The IPO, expected next month, would signal the start of a new AI era for the public markets.

CNBC's Jim Cramer said he is growing concerned about the speculative nature in the IPO market.

Jim Cramer warned that SpaceX's planned IPO could fuel speculation, distort valuations and pressure markets if share supply is tightly controlled.