# EDGAR Filing Document

**Accession Number:** 0001125725
**File Stem:** 0001019056-23-000104
**Filing Date:** 2023-2
**Character Count:** 14100
**Document Hash:** 4a685128bc74c8d70c66a3be802cc0c0
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001019056-23-000104.hdr.sgml**: 20230207

**ACCESSION NUMBER**: 0001019056-23-000104

**CONFORMED SUBMISSION TYPE**: 13F-HR

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20221231

**FILED AS OF DATE**: 20230207

**DATE AS OF CHANGE**: 20230207

**EFFECTIVENESS DATE**: 20230207

**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:** 23595651

**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

### FORM 13F COVER PAGE

**Report for the Calendar Year or Quarter Ended:** 12-31-2022

**Check here if Amendment** [ ] **Amendment Number:** 

**This Amendment (Check only one.):** [ ] is a restatement.

[ ] adds new holdings entries.

**Institutional Investment Manager Filing this Report:**

**Name:** GAGNON SECURITIES LLC<br>**Address:** 1370 Avenue of the Americas<br>24th Floor<br>New York, NY 10019

**Form 13F File Number:** 028-06377

**CRD Number (if applicable):** 000103727

**SEC File Number (if applicable):** 801-64836

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

**Person Signing this Report on Behalf of Reporting Manager:**

**Name:** Lisa Ferrante<br>**Title:** Chief Compliance Officer<br>**Phone:** 212-554-5000

**Signature, Place, and Date of Signing:**

/s/ Lisa Ferrante  New York, NY  02-07-2023<br>[Signature]  [City, State]  [Date]

**Report Type (Check only one.):**

[x] **13F HOLDINGS REPORT.** (Check here if all holdings of this reporting manager are reported in this report.)

[ ] **13F NOTICE.** (Check here if no holdings are reported in this report, and all holdings are reported by other reporting manager(s).)

[ ] **13F COMBINATION REPORT.** (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)

### Form 13F Summary Page

**Report Summary:**

**Number of Other Included Managers:** 0

**Form 13F Information Table Entry Total:** 106

**Form 13F Information Table Value Total:** $452942558

      (round to nearest dollar)

**List of Other Included Managers:**

Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.

[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]

**NONE**

### FORM 13F INFORMATION TABLE

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | VOTING AUTHORITY | VOTING AUTHORITY | VOTING AUTHORITY |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | SOLE | SHARED | NONE |
| AIR LEASE CORP | CL A | 00912X302 |  | 35400844 | 921417 | SH |  | SOLE |  | 0 | 0 | 921417 |
| AKAMAI TECHNOLOGIES | COM | 00971T101 |  | 2510706 | 29783 | SH |  | SOLE |  | 0 | 0 | 29783 |
| ALPHA AND OMEGA SEMICONDUCTOR LTD | SHS | G6331P104 |  | 10221288 | 357763 | SH |  | SOLE |  | 0 | 0 | 357763 |
| ALPHABET INC | CAP STK CL A | 02079K305 |  | 272454 | 3088 | SH |  | SOLE |  | 0 | 0 | 3088 |
| AMERESCO INC | CL A | 02361E108 |  | 15036333 | 263149 | SH |  | SOLE |  | 0 | 0 | 263149 |
| APOLLO ENDOSURGERY INC | COM | 03767D108 |  | 16980654 | 1703175 | SH |  | SOLE |  | 0 | 0 | 1703175 |
| APTOSE BIOSCIENCES INC | COM New | 03835T200 |  | 43980 | 75829 | SH |  | SOLE |  | 0 | 0 | 75829 |
| ARC RESOURCES LTD | COM | 00208D408 |  | 325279 | 24150 | SH |  | SOLE |  | 0 | 0 | 24150 |
| ARCHER-DANIELS-MIDLAND CO | COM | 039483102 |  | 206498 | 2224 | SH |  | SOLE |  | 0 | 0 | 2224 |
| AT INC | COM | 00206R102 |  | 784081 | 42590 | SH |  | SOLE |  | 0 | 0 | 42590 |
| BIOLIFE SOLUTIONS INC | COM NEW | 09062W204 |  | 10211328 | 561062 | SH |  | SOLE |  | 0 | 0 | 561062 |
| BLACKLINE INC | COM | 09239B109 |  | 13053541 | 194047 | SH |  | SOLE |  | 0 | 0 | 194047 |
| BOSTON BEER COMPANY INC | CL A | 100557107 |  | 4822525 | 14635 | SH |  | SOLE |  | 0 | 0 | 14635 |
| BRISTOW GROUP INC | COM | 11040G103 |  | 207218 | 7638 | SH |  | SOLE |  | 0 | 0 | 7638 |
| CAREDX INC | COM | 14167L103 |  | 17066466 | 1495746 | SH |  | SOLE |  | 0 | 0 | 1495746 |
| CARETRUST REIT INC | COM | 14174T107 |  | 3962853 | 213286 | SH |  | SOLE |  | 0 | 0 | 213286 |
| CARGURUS INC | COM CL A | 141788109 |  | 5169549 | 368990 | SH |  | SOLE |  | 0 | 0 | 368990 |
| CARMAX INC | COM | 143130102 |  | 9043078 | 148515 | SH |  | SOLE |  | 0 | 0 | 148515 |
| CELCUITY INC | COM | 15102K100 |  | 765716 | 54655 | SH |  | SOLE |  | 0 | 0 | 54655 |
| CES ENERGY SOLUTIONS CORP | COM | 15713J104 |  | 234372 | 115059 | SH |  | SOLE |  | 0 | 0 | 115059 |
| CHEESECAKE FACTORY INC | COM | 163072101 |  | 6515692 | 205477 | SH |  | SOLE |  | 0 | 0 | 205477 |
| CHEGG INC | COM | 163092109 |  | 469895 | 18595 | SH |  | SOLE |  | 0 | 0 | 18595 |
| CHIPOTLE MEXICAN GRILLINC | COM | 169656105 |  | 7725544 | 5568 | SH |  | SOLE |  | 0 | 0 | 5568 |
| CLEAN ENERGY FUELS CORP | COM | 184499101 |  | 362294 | 69672 | SH |  | SOLE |  | 0 | 0 | 69672 |
| CNFINANCE HOLDINGS LIMITED | SPON ADS | 18979T105 |  | 2813097 | 1645086 | SH |  | SOLE |  | 0 | 0 | 1645086 |
| COMMVAULT SYS INC | COM | 204166102 |  | 227229 | 3616 | SH |  | SOLE |  | 0 | 0 | 3616 |
| CORE LABORATORIES NV | COM | N22717107 |  | 228382 | 11267 | SH |  | SOLE |  | 0 | 0 | 11267 |
| DENISON MINES CORPORATION | COM | 248356107 |  | 420772 | 365889 | SH |  | SOLE |  | 0 | 0 | 365889 |
| DERMTECH INC | COM | 24984K105 |  | 282150 | 159407 | SH |  | SOLE |  | 0 | 0 | 159407 |
| DEVON ENERGY CORP | COM | 25179M103 |  | 1325602 | 21550 | SH |  | SOLE |  | 0 | 0 | 21550 |
| DHI GROUP INC | COM | 23331S100 |  | 189292 | 35783 | SH |  | SOLE |  | 0 | 0 | 35783 |
| DURECT CORP | COM | 266605500 |  | 539092 | 155807 | SH |  | SOLE |  | 0 | 0 | 155807 |
| E2OPEN PARENT HOLDINGS INC | COM CL A | 29788T103 |  | 8782987 | 1496249 | SH |  | SOLE |  | 0 | 0 | 1496249 |
| E2OPEN PARENT HOLDINGS INC | W EXP 02/04/2023 | 29788T111 |  | 409401 | 485705 | SH |  | SOLE |  | 0 | 0 | 485705 |
| ENERGY TRANSFER LP | COM UT LTD PTN | 29273V100 |  | 633490 | 53369 | SH |  | SOLE |  | 0 | 0 | 53369 |
| ENSIGN GROUP INC | COM | 29358P101 |  | 30576062 | 323180 | SH |  | SOLE |  | 0 | 0 | 323180 |
| ENTERPRISE PRODS PARTNERS LP | COM | 293792107 |  | 18506008 | 767247 | SH |  | SOLE |  | 0 | 0 | 767247 |
| ENVIVA PARTNERS LP | COM | 29415B103 |  | 15042526 | 283982 | SH |  | SOLE |  | 0 | 0 | 283982 |
| EOG RESOURCES INC | COM UNIT | 26875P101 |  | 540236 | 4171 | SH |  | SOLE |  | 0 | 0 | 4171 |
| EQUINIX INC | COM | 29444U700 |  | 10875463 | 16603 | SH |  | SOLE |  | 0 | 0 | 16603 |
| ETSY INC | COM | 29786A106 |  | 285435 | 2383 | SH |  | SOLE |  | 0 | 0 | 2383 |
| EVERBRIDGE INC | COM | 29978A104 |  | 6694042 | 226303 | SH |  | SOLE |  | 0 | 0 | 226303 |
| EXXON MOBIL CORP | COM | 30231G102 |  | 1240985 | 11251 | SH |  | SOLE |  | 0 | 0 | 11251 |
| FIVE9 INC | COM | 338307101 |  | 13608508 | 200538 | SH |  | SOLE |  | 0 | 0 | 200538 |
| FRESHWORKS INC | CLASS A COM | 358054104 |  | 7959536 | 541097 | SH |  | SOLE |  | 0 | 0 | 541097 |
| SEMA4 HOLDINGS CORP | COM CL A | 81663L101 |  | 282072 | 1069264 | SH |  | SOLE |  | 0 | 0 | 1069264 |
| SEMA4 HOLDINGS CORP | W EXP 07/22/2023 | 81663L119 |  | 922 | 48549 | SH |  | SOLE |  | 0 | 0 | 48549 |
| GENERAC HOLDINGS INC | COM | 368736104 |  | 1480909 | 14712 | SH |  | SOLE |  | 0 | 0 | 14712 |
| GENTEX CORP | COM | 371901109 |  | 1611157 | 59081 | SH |  | SOLE |  | 0 | 0 | 59081 |
| GILEAD SCIENCES INC | COM | 375558103 |  | 271972 | 3168 | SH |  | SOLE |  | 0 | 0 | 3168 |
| GOODRX HOLDINGS INC | COM CL A | 38246G108 |  | 509328 | 109298 | SH |  | SOLE |  | 0 | 0 | 109298 |
| HELMERICH  PAYNE INC | COM | 423452101 |  | 668401 | 13484 | SH |  | SOLE |  | 0 | 0 | 13484 |
| INTEST CORP | COM | 461147100 |  | 232697 | 22592 | SH |  | SOLE |  | 0 | 0 | 22592 |
| INTUITIVE SURGICAL INC | COM NEW | 46120E602 |  | 17906617 | 67483 | SH |  | SOLE |  | 0 | 0 | 67483 |
| LIVEPERSON INC | COM | 538146101 |  | 130846 | 12904 | SH |  | SOLE |  | 0 | 0 | 12904 |
| LL FLOORING HOLDINGS INC | COM | 55003T107 |  | 4109098 | 731156 | SH |  | SOLE |  | 0 | 0 | 731156 |
| MARVELL TECHNOLOGY INC | ORD | 573874104 |  | 569269 | 15369 | SH |  | SOLE |  | 0 | 0 | 15369 |
| MAXCYTE INC | COM | 57777K106 |  | 188195 | 34468 | SH |  | SOLE |  | 0 | 0 | 34468 |
| MERCK  CO. INC | COM | 58933Y105 |  | 422719 | 3810 | SH |  | SOLE |  | 0 | 0 | 3810 |
| MICROCHIP TECHNOLOGY INC | COM | 595017104 |  | 1506952 | 21451 | SH |  | SOLE |  | 0 | 0 | 21451 |
| MICROSOFT CORP | COM | 594918104 |  | 229747 | 958 | SH |  | SOLE |  | 0 | 0 | 958 |
| MIROMATRIX MED INC | COM | 60471P108 |  | 2532326 | 846932 | SH |  | SOLE |  | 0 | 0 | 846932 |
| MODEL N INC | COM | 607525102 |  | 265870 | 6555 | SH |  | SOLE |  | 0 | 0 | 6555 |
| NAVIGATOR HOLDINGS LTD | SHS | Y62132108 |  | 21631848 | 1808683 | SH |  | SOLE |  | 0 | 0 | 1808683 |
| NCS MULTISTAGE HOLDINGS INC | COM NEW | 628877201 |  | 565150 | 22606 | SH |  | SOLE |  | 0 | 0 | 22606 |
| NEW RELIC INC | COM | 64829B100 |  | 12325236 | 218339 | SH |  | SOLE |  | 0 | 0 | 218339 |
| NEXTIER OILFIELD SOLUTIONS | COM | 65290C105 |  | 2393658 | 259054 | SH |  | SOLE |  | 0 | 0 | 259054 |
| NINTENDO 8 | SPONSORED ADS | 654445303 |  | 801107 | 76427 | SH |  | SOLE |  | 0 | 0 | 76427 |
| OCADO GROUP PLC | COM | G6718L106 |  | 919423 | 123920 | SH |  | SOLE |  | 0 | 0 | 123920 |
| ONTO INNOVATION INC | COM | 683344105 |  | 211692 | 3109 | SH |  | SOLE |  | 0 | 0 | 3109 |
| OPSENS INC | COM | 683823108 |  | 3864712 | 2841700 | SH |  | SOLE |  | 0 | 0 | 2841700 |
| PACIRA BIOSCIENCES | COM | 695127100 |  | 21753453 | 563415 | SH |  | SOLE |  | 0 | 0 | 563415 |
| PAYPAL HOLDINGS INC | COM | 70450Y103 |  | 268713 | 3773 | SH |  | SOLE |  | 0 | 0 | 3773 |
| PENNANT GROUP INC | COM | 70805E109 |  | 2082016 | 189619 | SH |  | SOLE |  | 0 | 0 | 189619 |
| PETMED EXPRESS INC | COM | 716382106 |  | 334653 | 18907 | SH |  | SOLE |  | 0 | 0 | 18907 |
| PFIZER INC | COM | 717081103 |  | 1328089 | 25919 | SH |  | SOLE |  | 0 | 0 | 25919 |
| POWER SOLUTIONS INTERNATIONAL INC | COM | 73933G202 |  | 4051332 | 1350444 | SH |  | SOLE |  | 0 | 0 | 1350444 |
| PROFOUND MED CORP | COM NEW | 74319B502 |  | 19364652 | 1778205 | SH |  | SOLE |  | 0 | 0 | 1778205 |
| PROTO LABS INC | COM | 743713109 |  | 2252716 | 88238 | SH |  | SOLE |  | 0 | 0 | 88238 |
| QUIDEL CORP | COM | 219798105 |  | 8590473 | 100274 | SH |  | SOLE |  | 0 | 0 | 100274 |
| RANGE RESOURCES CORP | COM | 75281A109 |  | 587394 | 23477 | SH |  | SOLE |  | 0 | 0 | 23477 |
| REDHILL BIOPHARMA | SPONSORED ADS | 757468103 |  | 46559 | 331858 | SH |  | SOLE |  | 0 | 0 | 331858 |
| RINGCENTRAL INC | CL A | 76680R206 |  | 308015 | 8701 | SH |  | SOLE |  | 0 | 0 | 8701 |
| RPC INC | COM | 749660106 |  | 580490 | 65297 | SH |  | SOLE |  | 0 | 0 | 65297 |
| SECUREWORKS CORP | CL A | 81374A105 |  | 6554203 | 1025697 | SH |  | SOLE |  | 0 | 0 | 1025697 |
| SHELL PLC | SPON ADS | 780259305 |  | 364309 | 6397 | SH |  | SOLE |  | 0 | 0 | 6397 |
| SHOPIFY INC | CL A | 82509L107 |  | 275701 | 7943 | SH |  | SOLE |  | 0 | 0 | 7943 |
| SL GREEN REALTY CORP | COM | 78440X887 |  | 884216 | 26222 | SH |  | SOLE |  | 0 | 0 | 26222 |
| SOMALOGIC INC | CLASS A COM | 83444K105 |  | 2194219 | 874190 | SH |  | SOLE |  | 0 | 0 | 874190 |
| SOMALOGIC INC | W EXP 08/31/2023 | 83444K113 |  | 71165 | 177914 | SH |  | SOLE |  | 0 | 0 | 177914 |
| SPROTT FDS TR | URANIUM MINERS E | 85208P303 |  | 538246 | 16958 | SH |  | SOLE |  | 0 | 0 | 16958 |
| SPROTT PHYSICAL | URANIUMTR TRUST UNIT | 85210A104 |  | 876722 | 75041 | SH |  | SOLE |  | 0 | 0 | 75041 |
| STARBUCKS CORP | COM | 855244109 |  | 463462 | 4672 | SH |  | SOLE |  | 0 | 0 | 4672 |
| SYSMEX CORP | COM | J7864H102 |  | 269984 | 4454 | SH |  | SOLE |  | 0 | 0 | 4454 |
| TAPESTRY INC | COM | 876030107 |  | 2184889 | 57376 | SH |  | SOLE |  | 0 | 0 | 57376 |
| TFF PHARMACEUTICALS INC | COM | 876030107 |  | 231077 | 220074 | SH |  | SOLE |  | 0 | 0 | 220074 |
| THE NECESSITY RETAIL REIT INC | COM CLASS A | 87241J104 |  | 369225 | 62264 | SH |  | SOLE |  | 0 | 0 | 62264 |
| UR-ENERGY INC | COM | 02607T109 |  | 514682 | 447550 | SH |  | SOLE |  | 0 | 0 | 447550 |
| VIAVI SOLUTIONS INC | COM | 91688R108 |  | 214372 | 20397 | SH |  | SOLE |  | 0 | 0 | 20397 |
| WALGREENS BOOTS ALLIANCE INC | COM | 925550105 |  | 510374 | 13661 | SH |  | SOLE |  | 0 | 0 | 13661 |
| WARNER BROS DISCOVERY INC | COM SER A | 931427108 |  | 215982 | 22783 | SH |  | SOLE |  | 0 | 0 | 22783 |
| WELLS FARGO CO | COM | 934423104 |  | 539082 | 13056 | SH |  | SOLE |  | 0 | 0 | 13056 |
| JOHN WILEY  SONS INC | CL A | 949746101 |  | 667333 | 16658 | SH |  | SOLE |  | 0 | 0 | 16658 |
| YEXT INC | CL A | 968223206 |  | 9396239 | 1438934 | SH |  | SOLE |  | 0 | 0 | 1438934 |
| ZOOM VIDEO COMMUNICATIONS INC | CL A | 98585N106 |  | 277801 | 4101 | SH |  | SOLE |  | 0 | 0 | 4101 |
| ZUORA INC | COM CL A | 98980L101 |  | 5576314 | 876779 | SH |  | SOLE |  | 0 | 0 | 876779 |

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