Jurors received the case of 26-year-old Alexander Pring-Wilson last Thursday, and have met for about seven hours over two days.
The jury had Monday off for Columbus Day.
Prosecutors contend Pring-Wilson started the April 2003 fight that left 18-year-old Michael Colono dead. Defense attorneys say the Colorado Springs native was only acting in self-defense.
Pring-Wilson is a 2000 graduate of Colorado College who was studying for his master's degree at Harvard University. His parents are two prominent Colorado attorneys.
The jury is being allowed to consider several options, including convicting or acquitting Pring-Wilson of first-degree murder, or finding him guilty on a lesser charge of either second-degree murder or manslaughter.