Running darkpool "Net Buy Ratio" for the major bond ETFs:

Shows a relative preference for LT bonds compared to ST. Would indicate traders are expecting ST rates to rise (ahem...FOMC coming up) while still expecting rates to ultimately be lower in the long term.

$SHY (1-3yr tbond etf), $IEF (7-10yr tbond etf), $TLT (20yr+ tbond etf)