The closing price for Interactive Brokers (IBKR) on December 31, 2015 was $10.60. It was up 0.1% for the day (down 0.2% from previous close). The latest price is $67.64.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
December 31 2015
$10.59
$10.81
$10.54
$10.60
2,040,012
Daily pricing data for Interactive Brokers dates back to 5/4/2007, and may be incomplete.