U S AIRWAYS GROUP INC

CUSIP: 90341W108 Class: CMN

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

Note: Option positions (PUT/CALL) are excluded.

Q3 2013
Shares 137,889 Value ($000) $2,614 Avg Close — Range —
Q2 2013
Shares 798,869 Value ($000) $13,117 Avg Close — Range —