Thailand: Financial System Stability Assessment; imf country Report No. 19/308; September 10, 2019
Principles for the Secondary Markets
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34. Principles for the Secondary Markets. Real-time surveillance of the securities markets is
the responsibility of the SRO. The SEC does not have direct real-time access to SRO surveillance systems. It receives a detailed electronic file of all SET and TFEX trading data on a two-month delayed basis. The SET, TFEX, and the TBMA provide more rapid trading information when requested by the SEC or when a referral is made to the SEC of suspicious trading activity. The SET and TFEX Surveillance units operate from the same facility but the two Surveillance functions are separate, with only specified persons in each unit authorized to access the other surveillance system. The SEC should obtain real-time online access to SRO surveillance systems and create its own surveillance program to augment and complement the current SRO programs. Consideration should also be given to merging the SET and TFEX surveillance programs. It is recommended that the TBMA surveillance and enforcement programs should be examined carefully. Daily trading on the SET is largely conducted by retail investors engaging in short-term trading, and licensed intermediaries rely heavily upon client commissions for revenue. Recent amendments to the SEA provide the SEC with legal authority to review and approve all SET trading and operations rules. This may be an appropriate point in time for the SEC to conduct a comprehensive examination of all SET trading rules (e.g. trading restrictions, minimum client commissions, block trading rules) and their interaction and influence on the common trading practices on the SET. The SET, TFEX, and TCH monitor the risks of its members (at member level) and have put in place measures to identify, monitor, and evaluate large exposures. The TCH has tools to manage exposures by its members by requiring collateral according to the risk assumed by them. Short-selling is regulated and naked short-selling prohibited. Exchange traded derivatives are cleared through TCH while OTC traded derivatives are not. The authorities have manifested that the size of the OTC market segment is not large enough to make centralized clearing mandatory. However, the SEC and the BoT should begin the process of developing a workplan for requiring centralized clearing of OTC derivatives. |
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