CENTRAL FD CDA LTD

CUSIP: 153501101 Class: COM

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

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

Q3 2017
Shares 11,800 Value ($000) $150 Avg Close — Range —
Q2 2017
Shares 11,800 Value ($000) $145 Avg Close — Range —