To prevent excessive use of margin transactions, the TSE has established certain guidelines and publicly announces the balance of margin transactions daily for those issues that meet the criteria. Such issues are referred to as "Issues Subject to Daily Publication." This data includes the daily balance of margin transactions for individual symbols and the margin transaction ratio (flow). The data also includes the status of initial margin regulation (increment of initial margin.) Margin transaction balances are created using data reported by TSE trading participants and margin transaction flows are created using data extracted from the trading system.