[CFTC: As of the week of September 15, speculators reduced their net short position in CBOT 5-year U.S. Treasury futures by 270,127 contracts] September 19th, according to the U.S. Commodity Futures Trading Commission (CFTC): As of the week of September 15, speculators reduced their net short position in CBOT 5-year U.S. Treasury futures by 270,127 contracts to 997,366. Speculators reduced their net short position in CBOT 10-year U.S. Treasury futures by 13,547 contracts to 821,236 contracts. Speculators reduced their net short position in CBOT 2-year U.S. Treasury futures by 73,754 contracts to 345,203 contracts. Speculators increased their net short position in CBOT ultra-long U.S. Treasury futures by 63 contracts to 345,203 contracts. Speculators increased their net short position in CBOT U.S. Treasury futures by 2,640 contracts to 203,157.