OBERWEIS ASSET MANAGEMENT INC/ Information

3333 WARRENVILLE ROAD, LISLE, Illinois, 60532, (630) 577-2300

Report Date: 12/31/2014

Position Statistics

Total Positions 149
New Positions 17
Increased Positions 44
Decreased Positions 81
Positions with Activity 125
Sold Out Positions 22
Total Mkt Value (in $ millions) 367

Institutional Holdings information is filed by major institutions on form 13-F with the Securities and Exchange Commission.

Sector Weighting

Basic Materials 0.07%
Capital Goods 4.38%
Conglomerates
Consumer Cyclical 6.28%
Consumer/Non-Cyclical 0.24%
Energy 3.86%
Financial 10.39%
Healthcare 19.02%
Services 15.02%
Technology 29.75%
Transportation
Utilities

149 Positions as of 12/31/2014

Company ▲ Class Value of Shares ($1,000s) Change in Value ($1,000s) Change (%) Shares Held
21VIANET GROUP INC SPONSORED ADR 9,000 -1,453 (13.9) 530,059
500 COM LTD SPON ADR REP A 338 -3,112 (90.21) 28,666
8X8 INC NEW COM 5,866 -139 (2.31) 697,504
AAC HLDGS INC COM 430 430 New 14,700
ACADIA HEALTHCARE COMPANY INC COM 1,483 -94 (5.94) 20,600
ALIBABA GROUP HLDG LTD SPONSORED ADS 1,141 431 60.75 13,495
ALLIANCE FIBER OPTIC PRODS INC COM NEW -483 Sold Out 0
AMBARELLA INC SHS 1,520 -2,588 (63) 21,611
AMGEN INC COM 470 -7 (1.4) 2,889
ANI PHARMACEUTICALS INC COM 1,041 1,041 New 16,800
ANIKA THERAPEUTICS INC COM -631 Sold Out 0
APPLE INC COM 468 36 8.23 3,800
ASTRO-MED INC NEW COM 194 New 13,900
ASTRONICS CORP COM 8,601 -200 (2.27) 119,348
ATRICURE INC COM 806 New 38,000
ATTUNITY LTD SHS NEW 377 -187 (33.21) 37,810
BAIDU INC SPON ADR REP A 2,144 838 64.13 10,340
BANK NEW YORK MELLON CORP COM 271 .02 6,822
BHP BILLITON PLC SPONSORED ADR -183 Sold Out 0
BITAUTO HLDGS LTD SPONSORED ADS 4,144 -522 (11.18) 81,000