SGX-ST Rules Regulatory Notices Regulatory Notice 8.3 — Closing Price of Prescribed Instrument Past version: Effective up to 02 Jul 2023 Appendix A to Regulatory Notice 8.3 23 Oct 2020 to 02 Jul 202303 Jul 2023 onwards Prescribed Instruments1Exchange traded funds2Daily leverage certificatesAdded on 9 November 2020.