0001019056-20-000563.txt : 20201112 0001019056-20-000563.hdr.sgml : 20201112 20201112161045 ACCESSION NUMBER: 0001019056-20-000563 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20200930 FILED AS OF DATE: 20201112 DATE AS OF CHANGE: 20201112 EFFECTIVENESS DATE: 20201112 FILER: COMPANY DATA: COMPANY CONFORMED NAME: GAGNON SECURITIES LLC CENTRAL INDEX KEY: 0001125725 IRS NUMBER: 134087058 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-06377 FILM NUMBER: 201306757 BUSINESS ADDRESS: STREET 1: 1370 AVENUE OF THE AMERICAS STREET 2: 24TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10019 BUSINESS PHONE: 2125545000 MAIL ADDRESS: STREET 1: 1370 AVENUE OF THE AMERICAS STREET 2: 24TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10019 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001125725 XXXXXXXX 09-30-2020 09-30-2020 false GAGNON SECURITIES LLC
1370 Avenue of the Americas 24th Floor New York NY 10019
13F HOLDINGS REPORT 028-06377 N
Lisa Ferrante Chief Compliance Officer 212-554-5000 /s/ Lisa Ferrante New York NY 11-12-2020 0 100 468977
INFORMATION TABLE 2 infotable.xml AIR LEASE CORP CL A 00912X302 26569 903102 SH SOLE 0 0 903102 AIR LEASE CORP PFD 00912X500 2543 109225 SH SOLE 0 0 109225 AKAMAI TECHNOLOGIES INC COM 00971T101 2483 22463 SH SOLE 0 0 22463 ALPHA AND OMEGA SEMICONDUCTOR SHS G6331P104 10310 804179 SH SOLE 0 0 804179 AMERESCO INC CL A 02361E108 21118 632272 SH SOLE 0 0 632272 APOLLO ENDOSURGERY INC COM 03767D108 1763 1043082 SH SOLE 0 0 1043082 APTOSE BIOSCIENCES INC COM NEW 03835T200 504 83984 SH SOLE 0 0 83984 ASTON MARTIN LAGONDA GBLHLDGS PLC COM G05873107 11 16678 SH SOLE 0 0 16678 AT&T INC COM 00206R102 1189 41716 SH SOLE 0 0 41716 BIOLIFE SOLUTIONS INC COM NEW 09062W204 11758 406299 SH SOLE 0 0 406299 BLACKLINE INC COM 09239B109 16293 181780 SH SOLE 0 0 181780 BLUE PRISM GROUP PLC COM NEW G1193C101 322 18689 SH SOLE 0 0 18689 CAREDX INC COM 14167L103 41053 1082043 SH SOLE 0 0 1082043 CARETRUST REIT INC COM 14174T107 3727 209450 SH SOLE 0 0 209450 CARMAX INC COM 143130102 10980 119465 SH SOLE 0 0 119465 CASTLIGHT HEALTH INC CL B 14862Q100 3429 3034926 SH SOLE 0 0 3034926 CELCUITY INC COM 15102K100 2106 363149 SH SOLE 0 0 363149 CES ENERGY SOLUTIONS CORP COM 15713J104 55 93792 SH SOLE 0 0 93792 CHEESECAKE FACTORY INC COM 163072101 758 27326 SH SOLE 0 0 27326 CHEGG INC COM 163092109 382 5349 SH SOLE 0 0 5349 CHEMBIO DIAGNOSTICS INC COM NEW 163572209 199 40851 SH SOLE 0 0 40851 CHIPOTLE MEXICAN GRILL INC COM 169656105 6077 4886 SH SOLE 0 0 4886 CM LIFE SCIENCES INC UNIT 9/1/2025 18978W208 4756 454204 SH SOLE 0 0 454204 CNFINANCE HLDGS LTD SPON ADS 18979T105 1103 347970 SH SOLE 0 0 347970 CORE LABORATORIES NV COM N22717107 155 10161 SH SOLE 0 0 10161 DENISON MINES CORP COM 248356107 147 360926 SH SOLE 0 0 360926 DR HORTON INC COM 23331A109 275 3638 SH SOLE 0 0 3638 DURECT CORP COM 266605104 1729 1011232 SH SOLE 0 0 1011232 EHEALTH INC COM 28238P109 301 3813 SH SOLE 0 0 3813 ENERGY TRANSFER LP COM UT LTD PTN 29273V100 146 26987 SH SOLE 0 0 26987 ENSIGN GROUP INC COM 29358P101 23468 411281 SH SOLE 0 0 411281 ENTERPRISE PRODS PARTNERS L P COM 293792107 9141 578925 SH SOLE 0 0 578925 EQUINIX INC COM 29444U700 12651 16643 SH SOLE 0 0 16643 ETSY INC COM 29786A106 260 2134 SH SOLE 0 0 2134 EVERBRIDGE INC COM 29978A104 11794 93808 SH SOLE 0 0 93808 EXXON MOBIL CORP COM 30231G102 632 18400 SH SOLE 0 0 18400 FACEBOOK INC CL A 30303M102 221 843 SH SOLE 0 0 843 FIVE9 INC COM 338307101 17745 136835 SH SOLE 0 0 136835 FLEXION THERAPEUTICS INC COM 33938J106 2052 197082 SH SOLE 0 0 197082 GENERAC HLDGS INC COM 368736104 2714 14014 SH SOLE 0 0 14014 GENERAL FIN CORP DEL COM 369822101 14138 2233485 SH SOLE 0 0 2233485 GENERAL FIN CORP DEL PFD 369822507 4565 44794 SH SOLE 0 0 44794 GENTEX CORP COM 371901109 1100 42737 SH SOLE 0 0 42737 INPHI CORP COM 45772F107 822 7325 SH SOLE 0 0 7325 INTUITIVE SURGICAL INC COM NEW 46120E602 15840 22325 SH SOLE 0 0 22325 IROBOT CORP COM 462726100 10869 143197 SH SOLE 0 0 143197 WILEY JOHN & SONS INC CL A 968223206 352 11085 SH SOLE 0 0 11085 JOHNSON & JOHNSON COM 478160104 558 3750 SH SOLE 0 0 3750 KB HOME COM 48666K109 271 7056 SH SOLE 0 0 7056 KRAFT HEINZ CO COM 500754106 289 9655 SH SOLE 0 0 9655 LENNAR CORP CL A 526057104 272 3336 SH SOLE 0 0 3336 LGI HOMES INC COM 50187T106 268 2308 SH SOLE 0 0 2308 LIVEPERSON INC COM 538146101 532 10231 SH SOLE 0 0 10231 LUMBER LIQUIDATORS HLDGS INC COM 55003T107 20320 921544 SH SOLE 0 0 921544 MACYS INC COM 55616P104 181 31834 SH SOLE 0 0 31834 MALLINCKRODT PUB LTD CO SHS G5785G107 142 145391 SH SOLE 0 0 145391 MARVELL TECHNOLOGY GROUP LTD ORD G5876H105 558 14045 SH SOLE 0 0 14045 MERCK & CO. INC COM 58933Y105 4162 50176 SH SOLE 0 0 50176 MICROCHIP TECHNOLOGY INC. COM 595017104 1031 10035 SH SOLE 0 0 10035 MODEL N INC COM 607525102 211 5980 SH SOLE 0 0 5980 NAVIGATOR HOLDINGS LTD SHS Y62132108 14029 1678074 SH SOLE 0 0 1678074 NCS MULTISTAGE HLDGS INC COM 628877102 51 85482 SH SOLE 0 0 85482 NEW RELIC INC COM 64829B100 11871 210635 SH SOLE 0 0 210635 NEXTIER OILFIELD SOLUTIONS COM 65290C105 415 224470 SH SOLE 0 0 224470 NINTENDO SPONSORED ADR 654445303 1933 27351 SH SOLE 0 0 27351 NIVS INTELLIMEDIA TECHNOLOGYG COM 62914U108 0 38567 SH SOLE 0 0 38567 NVIDIA CORPORATION COM 67066G104 596 1101 SH SOLE 0 0 1101 OCADO GROUP PLC COM G6718L106 909 25622 SH SOLE 0 0 25622 ONTO INNOVATION INC COM 683344105 5974 200607 SH SOLE 0 0 200607 PACIRA BIOSCIENCES COM 695127100 25591 425667 SH SOLE 0 0 425667 PALANTIR TECHNOLOGIES INC CL A 69608A108 240 25292 SH SOLE 0 0 25292 PAYPAL HLDGS INC COM 70450Y103 772 3916 SH SOLE 0 0 3916 PENNANT GROUP INC COM 70805E109 7290 189050 SH SOLE 0 0 189050 PFIZER INC COM 717081103 594 16180 SH SOLE 0 0 16180 POWER SOLUTIONS INTERNATIONAL INC COM 73933G202 3385 1109850 SH SOLE 0 0 1109850 PROFOUND MED CORP COM NEW 74319B502 13751 779533 SH SOLE 0 0 779533 PROTO LABS INC COM 743713109 7692 59400 SH SOLE 0 0 59400 QUIDEL CORP COM 74838J101 12664 57725 SH SOLE 0 0 57725 RADA ELECTRONICS INDUSTRIES COM PAR NEW M81863124 156 26338 SH SOLE 0 0 26338 RANGE RESOURCES CORP COM 75281A109 136 20619 SH SOLE 0 0 20619 REDHILL BIOPHARMA LTD SPONSORED ADS 757468103 2432 237991 SH SOLE 0 0 237991 SECUREWORKS CORP CL A 81374A105 5455 478942 SH SOLE 0 0 478942 SEVEN GENERATIONS ENERGY LTD COM 81783Q105 54 20113 SH SOLE 0 0 20113 SL GREEN RLTY CORP COM 78440X101 536 11563 SH SOLE 0 0 11563 SUNCOR ENERGY COM NEW COM 867224107 400 32735 SH SOLE 0 0 32735 SYSMEX CORP COM J7864H102 380 4001 SH SOLE 0 0 4001 T2 BIOSYSTEMS INC COM 89853L104 645 474310 SH SOLE 0 0 474310 TALEND S A ADS 874224207 1705 43685 SH SOLE 0 0 43685 TAPESTRY INC COM 876030107 612 39126 SH SOLE 0 0 39126 TFF PHARMACEUTICALS INC COM 87241J104 4056 219584 SH SOLE 0 0 219584 URANIUM PARTN CORP SHS 917017105 285 92874 SH SOLE 0 0 92874 UR-ENERGY INC COM 91688R108 239 498878 SH SOLE 0 0 498878 VIAVI SOLUTIONS INC COM 925550105 130 11053 SH SOLE 0 0 11053 VONAGE HLDGS CORP COM 92886T201 123 12002 SH SOLE 0 0 12002 WALGREENS BOOTS ALLIANCE INC COM 931427108 332 9232 SH SOLE 0 0 9232 WPX ENERGY INC COM 98212B103 2305 470373 SH SOLE 0 0 470373 YEXT INC CL A 98585N106 8545 562897 SH SOLE 0 0 562897 ZUORA INC COM CL A 98983V106 1649 159448 SH SOLE 0 0 159448 MERCK & CO. INC COM 58933Y105 1153 13900 SH Call SOLE 0 0 13900 MICRON TECHNOLOGY INC COM 595112103 493 10500 SH Call SOLE 0 0 10500