Blackstone readies its next real estate private equity fund, Blackstone Real Estate Partners X L.P., and it's going to be a whopper.

A Form D filing with the SEC for the new fund shows there's already been $24.1 billion in "total Limited Partner commitments as well as sales in parallel funds under Regulation D and/or Regulation S." But the total offering and total remaining to be sold are both listed as indefinite, so the final fund size could get much larger. Blackstone has estimated the sales commissions it will pay at $50 million.

According to IPE Real Assets, three US public pension funds have disclosed planned investments. "Teachers' Retirement System of Louisiana (TRSL) and Arkansas Teacher Retirement System have each made a $75m (€70.6m) commitment to Blackstone Real Estate Partners X and the Oklahoma Teachers' Retirement System has placed $100m into the fund, the pensions fund disclosed in their board meeting documents," the publication wrote.