光期黑色：铁矿石基差及价差监测日报-20260312

Group 1: Report Overview - The report is the Iron Ore Basis and Spread Monitoring Daily Report by Guangda Futures, dated March 12, 2026 [1] Group 2: Futures Contract Information - The closing prices of I05, I09, and I01 contracts are 787.5, 758.5, and 740.5 respectively, with changes of 3.5, 1.5, and 1.5 compared to the previous day [3] - The spreads of I05 - I09, I09 - I01, and I01 - I05 are 29.0, 18.0, and -47.0 respectively, with changes of 2.0, 0.0, and -2.0 compared to the previous day [3] Group 3: Basis Data - The basis data of various iron ore varieties are presented, including prices, changes, and basis values. For example, the basis of Carajás Fines is 83 today, up 2 from the previous day [7] Group 4: Basis Charts - Multiple basis charts are provided, showing the basis trends of different iron ore varieties over time [9][10][11] Group 5: Exchange Rule Adjustments - The Dalian Commodity Exchange has made adjustments to the iron ore futures contract, including adding 4 deliverable varieties, adjusting brand premiums and discounts, and modifying quality differences and premiums [14] - The adjusted deliverable brands and premiums apply to contracts starting from I2312 [15] Group 6: Variety Spread Data - The spread data of various iron ore varieties are presented, such as the spread between PB Lump and PB Fines is 110.0 today, up 2.0 from the previous day [16] Group 7: Variety Spread Charts - Multiple variety spread charts are provided, showing the spread trends of different iron ore varieties over time [17][18][19] Group 8: Research Team Introduction - The black research team members are introduced, including their positions, experiences, and qualifications [24]