SCHEDULE 13G/A

Opendoor Technologies Inc

Common stock, $0.0001 par value per share · CUSIP: 683712103

Event date: 2025-12-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• JANE STREET GROUP, LLC

  Shares: 28,652,374.07 · Class: 3.0%

• Jane Street Capital, LLC

  Shares: 3,159,644.00 · Class: 0.3%

• Jane Street Options, LLC

  Shares: 12,774,012.00 · Class: 1.3%

• Jane Street Global Trading, LLC

  Shares: 12,718,718.07 · Class: 1.3%

• Jane Street Singapore Pte. Ltd

  Shares: 0.00 · Class: 0.0%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.