VOCERA COMMUNICATIONS INC

CUSIP: 92857F107 Class: COMMON STOCK

Campbell & CO Investment Adviser LLC's Holding History (CIK: 0001353570)

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

Q1 2018
Shares 9,497 Value ($000) $222 Avg Close — Range —
Q4 2017
Shares 10,697 Value ($000) $323 Avg Close — Range —
Q3 2017
Shares 9,476 Value ($000) $297 Avg Close — Range —
Q2 2017
Shares 7,832 Value ($000) $207 Avg Close — Range —
Q3 2016
Shares 10,579 Value ($000) $179 Avg Close — Range —
Q3 2015
Shares 11,746 Value ($000) $134 Avg Close — Range —