Old Dominion Freight Line (ODFL) has seen a 13.46% increase in its short percent of float since the last report, with 2.30 million shares sold short, representing 2.36% of available shares. This indicates a bearish market sentiment towards ODFL, although it has less short interest compared to its peer group average of 3.58%. The rise in short interest doesn't necessarily predict a price drop but suggests increased bearishness among traders.