ISM's services index fell to 57.1 last month from 58.6 in September, drifting further from August's post-recession high of 59.6. The latest figure also undershot a median forecast of 58 among economists polled by Reuters.
The yield on benchmark 10-year Treasuries notes was last 2.353 percent, up 1 basis point from late on Tuesday. The 10-year yield was 2 basis points higher shortly before the release of the October ISM services data.