SoftBank has said it is investing at least $25 billion in the fund and has been in talks with Saudi Arabia's Public Investment Fund for an investment that could be as much as $45 billion.
"We believe their new fund will speed the development of technologies which may be strategically important to Apple," company spokesman Josh Rosenstock told Reuters.
SoftBank has also said that it plans to make future large-scale investments via the tech fund, rather than on its own.
SoftBank confirmed that Apple invested, said Benjamin Spicehandler, an outside public relations representative for SoftBank. He added that Foxconn, Oracle founder Larry Ellison's family office and chipmaker Qualcomm also have said they intend to invest in the fund.
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