* Speculative 5-year T-note net shorts hit record peak * Speculators raise net shorts in 30-year T-bonds * U.S. sells record amounts of 10-year, 30-year debt (Adds background, details on latest data) Aug 10 (Reuters) - Speculators' net bearish bets on U.S. 10-year Treasury note futures slipped from an all-time high earlier this week before the Treasury's record offering of 10-year debt, according to Commodity Futures Trading Commission data released on Friday.
The amount of speculators' bearish, or short, positions in 10-year Treasury futures exceeded bullish, or long, positions by 586,299 contracts on Aug. 7, according to the CFTC's latest Commitments of Traders data.
A week earlier, speculators held a record 590,128 net short positions in 10-year T-note futures.
On the other hand, speculative net shorts in U.S. five-year T-notes set another all-time peak at 841,043 contracts on Tuesday, while speculators increased their net shorts in 30-year T-bonds to 31,943 contracts, the most since May 29.
Earlier this week, the U.S. Treasury sold $78 billion in coupon-bearing debt as a part of its August refunding with the goal to raise nearly $40 billion in new cash.
The government has ratcheted its borrowing after suspending its statutory debt ceiling in the aftermath of a two-year spending agreement. It also needs to issue more debt to finance a growing budget deficit stemming from the massive tax cut enacted in December.
The Treasury sold $34 billion in three-year notes on Tuesday, followed by a record $26 billion in 10-year debt on Wednesday and $18 billion in 30-year bonds on Thursday, which was the most ever for that maturity.