The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
21Vianet Group, Inc. - ADR com 90138A103 832 60,000 SH   SOLE   60,000 0 0
ACM Research, Inc. Class A com 00108J109 740 25,000 SH   SOLE   25,000 0 0
AMR Corp Escrow com 001esc102 0 18,000 SH   SOLE   18,000 0 0
Accuray Inc. com 004397105 405 213,300 SH   SOLE   213,300 0 0
Addus Homecare Corp. com 006739106 2,297 33,980 SH   SOLE   30,030 0 3,950
Adesto Technologies Corp. com 00687D101 763 68,200 SH   SOLE   68,200 0 0
Adtran, Inc. com 00738A106 174 22,700 SH   SOLE   22,700 0 0
Advansix, Inc. com 00773T101 130 13,600 SH   SOLE   13,600 0 0
Agco Corp com 001084102 404 8,555 SH   SOLE   8,555 0 0
Air Transport Services Group, com 00922R105 860 47,030 SH   SOLE   47,030 0 0
Alibaba ADR com 01609W102 7,002 36,005 SH   SOLE   34,130 0 1,875
Allied Motion Technologies com 019330109 391 16,500 SH   SOLE   16,500 0 0
Allscripts Healthcare Solution com 01988P108 189 26,800 SH   SOLE   26,800 0 0
Amedisys Inc. com 023436108 1,155 6,295 SH   SOLE   3,240 0 3,055
Ameresco, Inc. com 02361E108 692 40,608 SH   SOLE   40,608 0 0
American Eagle Outfitters com 02553E106 157 19,800 SH   SOLE   19,800 0 0
American Power Corp com 02906t107 0 10,000 SH   SOLE   0 0 10,000
Amgen, Inc. com 031162100 307 1,512 SH   SOLE   0 0 1,512
Antares Pharma, Inc. com 036642106 473 200,600 SH   SOLE   200,600 0 0
Apple, Inc. com 037833100 629 2,473 SH   SOLE   60 0 2,413
Arco Platform Ltd. Com Cl A com G04553106 537 12,700 SH   SOLE   12,700 0 0
Associated Banc-Corp com 045487105 440 34,440 SH   SOLE   34,440 0 0
Audio Codes ADR com m15342104 28,057 1,174,438 SH   SOLE   898,838 0 275,600
Avatar Ventures com 05350B100 0 10,000 SH   SOLE   0 0 10,000
Axcelis Technologies com 054540208 2,137 116,730 SH   SOLE   101,500 0 15,230
Bandwidth, Inc. com 05988J103 3,893 57,849 SH   SOLE   44,969 0 12,880
Baudax Bio, Inc. com 07160F107 227 91,620 SH   SOLE   91,620 0 0
Benchmark Electronics Inc com 08160H101 229 11,440 SH   SOLE   11,440 0 0
BioDelivery Sciences Internati com 09060J106 507 133,900 SH   SOLE   133,900 0 0
Boot Barn Hldgs, Inc. com 099406100 393 30,400 SH   SOLE   30,400 0 0
Bottomline Technologies com 101388106 2,015 54,980 SH   SOLE   42,270 0 12,710
CACI International, Inc. com 127190304 2,833 13,415 SH   SOLE   9,850 0 3,565
CNO Financial Group, Inc. com 12621E103 484 39,030 SH   SOLE   39,030 0 0
CRA Int'l Inc. com 12618T105 628 18,800 SH   SOLE   18,800 0 0
Cabot Microelectronics Corp. com 12709P103 1,097 9,612 SH   SOLE   5,845 0 3,767
Cadence Bancorporation com 12739A100 117 17,800 SH   SOLE   17,800 0 0
Camtek, Ltd. com m20791105 786 93,400 SH   SOLE   93,400 0 0
Cardtronics, Inc. com G1991C105 619 29,600 SH   SOLE   29,600 0 0
Carpenter Technology Corp. com 144285103 359 18,400 SH   SOLE   18,400 0 0
Castle Biosciences, Inc. com 14843C105 2,618 87,810 SH   SOLE   67,700 0 20,110
Centerstate Bank Corp. com 15201P109 370 21,468 SH   SOLE   13,500 0 7,968
Central Pacific Financial Corp com 154760409 596 37,500 SH   SOLE   37,500 0 0
Ceva Inc. com 157210105 673 27,000 SH   SOLE   27,000 0 0
ChannelAdvisor Corporation com 159179100 581 80,000 SH   SOLE   80,000 0 0
Chart Industries Inc. com 16115Q308 979 33,780 SH   SOLE   23,000 0 10,780
Clarus Corp. com 18270P109 210 21,400 SH   SOLE   21,400 0 0
Cleveland-Cliffs Inc. com 185899101 77 19,500 SH   SOLE   19,500 0 0
Coherus Biosciences, Inc. com 19249H103 586 36,100 SH   SOLE   36,100 0 0
Collegium Pharmaceutical, Inc. com 19459J104 885 54,200 SH   SOLE   54,200 0 0
Computer Programs & Systems com 205306103 505 22,700 SH   SOLE   22,700 0 0
Comtech Telecommunications CP com 205826209 348 26,200 SH   SOLE   26,200 0 0
Crocs, Inc. com 227046109 788 46,400 SH   SOLE   46,400 0 0
CyberArk Software com M2682V108 496 5,800 SH   SOLE   5,800 0 0
Dana Inc. com 235825205 383 48,980 SH   SOLE   48,980 0 0
Daqo New Energy Corp. com 23703Q203 463 8,000 SH   SOLE   8,000 0 0
Deckers Outdoor Corp. com 243537107 2,173 16,220 SH   SOLE   10,250 0 5,970
Digi International I com 253798102 576 60,400 SH   SOLE   60,400 0 0
Digital Turbine, Inc. com 25400W102 698 162,000 SH   SOLE   162,000 0 0
EPlus, Inc. com 294268107 238 3,800 SH   SOLE   3,800 0 0
Ehealth, Inc. com 28238P109 7,273 51,651 SH   SOLE   37,361 0 14,290
Endava Plc Ads com 29260V105 19,018 540,900 SH   SOLE   414,000 0 126,900
Ensign Group, Inc. com 29358p101 963 25,600 SH   SOLE   25,600 0 0
Entercom Communication com 293639100 35 20,700 SH   SOLE   20,700 0 0
Enterprise Finl Svcs com 293712105 796 28,520 SH   SOLE   23,550 0 4,970
EverQuote, Inc. com 30041R108 585 22,300 SH   SOLE   22,300 0 0
Farmers National Banc Corp. com 309627107 222 19,100 SH   SOLE   19,100 0 0
Faro Technologies, Inc. com 311642102 872 19,600 SH   SOLE   19,600 0 0
Federal Signal Corp. com 313855108 857 31,410 SH   SOLE   31,410 0 0
First Foundation Inc. com 32026V104 269 26,300 SH   SOLE   26,300 0 0
Fitbit, Inc. com 33812L102 161 24,100 SH   SOLE   24,100 0 0
Fulton Financial Corp. com 360271100 461 40,100 SH   SOLE   40,100 0 0
GDS Holdings Ltd. ADR com 36165L108 2,653 45,761 SH   SOLE   43,461 0 2,300
Granite Construction com 387328107 408 26,900 SH   SOLE   26,900 0 0
Graphic Packaging Hldg., Co. com 388689101 405 33,200 SH   SOLE   33,200 0 0
Gray Television, Inc. com 389375106 493 45,930 SH   SOLE   18,110 0 27,820
Green Brick Partners, Inc. com 392709101 206 25,533 SH   SOLE   25,533 0 0
Griffon Corp. com 398433102 466 36,800 SH   SOLE   36,800 0 0
Gulfport Energy Corp. com 402635304 38 85,900 SH   SOLE   85,900 0 0
Hancock Whitney Corp. com 410120109 226 11,590 SH   SOLE   11,590 0 0
Harmonic, Inc. com 413160102 464 80,600 SH   SOLE   80,600 0 0
Heritage Ins Hldgs, Inc. com 42727J102 629 58,713 SH   SOLE   58,713 0 0
Hope Bancorp, Inc. com 43940T109 435 52,900 SH   SOLE   52,900 0 0
Huron Consulting Group, Inc. com 447462102 744 16,400 SH   SOLE   16,400 0 0
INPHI Corp. com 45772F107 5,247 66,270 SH   SOLE   46,600 0 19,670
Imax Corp. com 45245E109 103 11,400 SH   SOLE   11,400 0 0
Impinj, Inc. com 453204109 351 21,000 SH   SOLE   21,000 0 0
Inmode Ltd. com M5425M103 1,304 60,670 SH   SOLE   45,680 0 14,990
Intel Corporation com 458140100 329 6,082 SH   SOLE   0 0 6,082
Iridium Communications Inc. com 46269C102 290 13,000 SH   SOLE   13,000 0 0
JD.com ADR com 47215P106 1,833 45,250 SH   SOLE   45,000 0 250
JP Morgan Chase & Company Inc. com 46625H100 404 4,486 SH   SOLE   140 0 4,346
Jabil Inc. com 466313103 251 10,200 SH   SOLE   10,200 0 0
Johnson & Johnson com 478160104 315 2,406 SH   SOLE   0 0 2,406
Limelight Networks, Inc. com 53261M104 1,182 207,300 SH   SOLE   207,300 0 0
LiqTech International, Inc com 53632A201 1,085 252,980 SH   SOLE   252,980 0 0
M/I Homes, Inc. com 55305B101 392 23,700 SH   SOLE   23,700 0 0
MRC Global, Inc. com 55345K103 88 20,700 SH   SOLE   20,700 0 0
MYR Group, Inc. com 55405W104 492 18,800 SH   SOLE   18,800 0 0
Malibu Boats, Inc. com 56117J100 1,683 58,460 SH   SOLE   45,150 0 13,310
Mastec, Inc. com 576323109 960 29,340 SH   SOLE   29,340 0 0
MasterCraft Boat Holdings, Inc com 57637H103 220 30,100 SH   SOLE   30,100 0 0
Mastercard, Inc. com 57636Q104 421 1,743 SH   SOLE   0 0 1,743
Matson, Inc. com 57686g105 231 7,545 SH   SOLE   7,145 0 400
McGrath RentCorp com 580589109 801 15,300 SH   SOLE   15,300 0 0
Mercury Systems, Inc. com 589378108 572 8,015 SH   SOLE   3,870 0 4,145
Meta Financial Group, Inc. com 59100U108 673 31,000 SH   SOLE   31,000 0 0
Microsoft Corp. com 594918104 574 3,640 SH   SOLE   0 0 3,640
Model N, Inc. com 607525102 1,753 78,940 SH   SOLE   66,800 0 12,140
Monmouth Real Estate Invt Corp com 609720107 158 13,100 SH   SOLE   13,100 0 0
Napco Sec Technologies, Inc. com 630402105 753 49,637 SH   SOLE   49,637 0 0
National Health Investors, Inc com 63633d104 344 6,940 SH   SOLE   6,940 0 0
National Healthcare com 635906100 481 6,700 SH   SOLE   6,700 0 0
Navient Corp. com 63938c108 149 19,600 SH   SOLE   19,600 0 0
Netease.Com, Inc. ADR com 64110W102 928 2,890 SH   SOLE   2,500 0 390
New Jersey Res Corp. com 646025106 507 14,930 SH   SOLE   14,930 0 0
New Oriental Education ADR com 647581107 1,569 14,500 SH   SOLE   14,500 0 0
Newmont Mining com 651639106 277 6,118 SH   SOLE   400 0 5,718
Northwest Pipe Co. com 667746101 612 27,500 SH   SOLE   27,500 0 0
Old National Bancorp com 680033107 654 49,615 SH   SOLE   49,615 0 0
OneSpan, Inc. com 68287N100 1,332 73,400 SH   SOLE   70,700 0 2,700
Oshkosh Corp. com 688239201 511 7,940 SH   SOLE   7,940 0 0
Oxford Immunotec Global Plc com G6855A103 438 47,300 SH   SOLE   47,300 0 0
PBF Energy Inc., Cl A com 69318g106 85 11,960 SH   SOLE   11,600 0 360
Perdoceo Education Corp. com 71363P106 3,147 291,659 SH   SOLE   229,239 0 62,420
Perficient Inc. com 71375U101 610 22,500 SH   SOLE   22,500 0 0
Pfenex, Inc. com 717071104 399 45,200 SH   SOLE   45,200 0 0
Physicians Realty Trust com 71943u104 493 35,331 SH   SOLE   35,331 0 0
Plexus Corp. com 729132100 273 5,000 SH   SOLE   5,000 0 0
Polyone Corp. com 73179P106 203 10,700 SH   SOLE   10,700 0 0
Portland General Electric Co. com 736508847 467 9,750 SH   SOLE   9,750 0 0
Quanex Building Products Corp. com 747619104 103 10,200 SH   SOLE   10,200 0 0
Radian Group, Inc. com 750236101 440 33,960 SH   SOLE   33,960 0 0
Rapid7, Inc. com 753422104 1,290 29,780 SH   SOLE   17,400 0 12,380
Recro Pharma, Inc. com 75629F109 976 119,500 SH   SOLE   119,500 0 0
Red Rock Resorts Inc com 75700L108 95 11,070 SH   SOLE   11,070 0 0
Resmed Inc. com 761152107 243 1,650 SH   SOLE   0 0 1,650
Rubicon Project Inc com 78112V102 1,845 332,500 SH   SOLE   243,550 0 88,950
Ryman Hospitality Pptys. Inc. com 78377t107 550 15,350 SH   SOLE   15,350 0 0
Science Applications Int'l. Co com 808625107 511 6,850 SH   SOLE   6,850 0 0
Sea Ltd com 81141R100 359 8,100 SH   SOLE   8,100 0 0
Simmons First National Corp. com 828730200 597 32,430 SH   SOLE   32,430 0 0
Skyline Champion Corp com 830830105 497 31,720 SH   SOLE   27,270 0 4,450
Skywest Inc com 830879102 367 14,000 SH   SOLE   11,200 0 2,800
Southwest Gas Corp. com 844895102 489 7,030 SH   SOLE   7,030 0 0
Spartan Motors, Inc. com 846819100 745 57,700 SH   SOLE   57,700 0 0
Stifel Financial Corp. com 860630102 573 13,870 SH   SOLE   13,870 0 0
Tactile Sys Technology, Inc. com 87357P100 1,197 29,800 SH   SOLE   29,800 0 0
Tal Education Group ADR com 874080104 1,917 36,000 SH   SOLE   36,000 0 0
Tandem Diabetes Care, Inc. com 875372203 4,352 67,630 SH   SOLE   47,420 0 20,210
Telaria, Inc. com 879181105 1,001 166,800 SH   SOLE   166,800 0 0
Tennant Company com 880345103 510 8,800 SH   SOLE   8,800 0 0
The Travelers Co., Inc. com 89417E109 248 2,498 SH   SOLE   0 0 2,498
Timken Company com 887389104 242 7,490 SH   SOLE   7,490 0 0
Tital Oil & Gas, Inc. com 888309101 0 10,000 SH   SOLE   0 0 10,000
Trex Company, Inc. com 89531P105 2,357 29,405 SH   SOLE   19,370 0 10,035
Triumph Bancorp, Inc. com 89679E300 601 23,100 SH   SOLE   23,100 0 0
Triumph Group, Inc. com 896818101 292 43,240 SH   SOLE   43,240 0 0
Ultra Clean Holdings com 90385V107 777 56,300 SH   SOLE   56,300 0 0
Upland Software, Inc. com 91544A109 993 37,035 SH   SOLE   28,130 0 8,905
Vericel Corp. com 92346J108 231 25,170 SH   SOLE   3,130 0 22,040
Viavi Solutions, Inc. com 925550105 165 14,730 SH   SOLE   14,500 0 230
Vishay Intertechnology com 928298108 475 32,950 SH   SOLE   32,950 0 0
W&T Offshore, Inc. com 92922p106 259 152,100 SH   SOLE   152,100 0 0
Wal Mart Stores Inc. com 931142103 206 1,814 SH   SOLE   0 0 1,814
Walker & Dunlop, Inc. com 93148P102 310 7,686 SH   SOLE   7,686 0 0
Werner Enterprises, Inc. com 950755108 308 8,500 SH   SOLE   8,500 0 0
Williams-Sonoma, Inc. com 969904101 651 15,310 SH   SOLE   15,030 0 280
Wolverine World Wide com 978097103 419 27,582 SH   SOLE   27,582 0 0
Xenacare Hldgs, Inc. com 98401A106 0 140,000 SH   SOLE   0 0 140,000
Zix Corp. com 98974P100 713 165,370 SH   SOLE   165,370 0 0
Zumiez Inc. com 989817101 537 31,000 SH   SOLE   31,000 0 0
SPDR S&P 500 ETF Trust com 78462F103 982 3,809 SH   SOLE   0 0 3,809