Sponsored

The Analysis of GAGNON SECURITIES LLC's Holdings & P&L

Currently, GAGNON SECURITIES LLC holds 84 types of securities in its portfolio with a total value $541.0M. In the most recent quarter, they have increased their positions in N/A (+221.7K shares, valued at $15.2M), N/A (+765.2K shares, valued at $11.7M), QDEL (+627.0K shares, valued at $11.0M); decreased their positions in CDNA (-4.3M shares, valued at $190.7M), TMCI (-2.2M shares, valued at $8.6M), PTEN (-297.2K shares, valued at $2.7M); initiated new positions in N/A (+765.2K shares, valued at $11.7M), WRBY (+11.4K shares, valued at $345.3K), VCEL (+7.3K shares, valued at $324.9K).

1M P&L

+48.3M+8.53%

3M P&L

+133.8M+27.86%

HY P&L

+209.7M+51.90%

P&L figures are estimated based on reported 13F stock holdings and market price changes. They are approximations and may not reflect actual fund performance. Stock split events may also affect the accuracy of these calculations, and we cannot guarantee that all splits have been fully accounted for.

Top Holding Treemap

Top Industries by Value

1Diagnostics & Research72.6M

15.2%

2Software - Application57.8M

12.1%

3Medical Devices43.1M

9.1%

Top Industries by Stock Count

1Software - Application12 stocks

17.4%

2Semiconductors6 stocks

8.7%

3Medical Instruments & Supplies5 stocks

7.2%

Sponsored

Stock Holdings

TickerCompany NameSharesShares △%Event DateReport DateHistory

CDNA CAREDX INC1.8M shares0.50%2026-06-302026-08-05

GENEDX HOLDINGS CORP GENEDX HOLDINGS CORP524.9K shares73.14%2026-06-302026-08-05

ENSG ENSIGN GROUP INC173.9K shares-3.21%2026-06-302026-08-05

AMRC AMERESCO INC826.6K shares-1.61%2026-06-302026-08-05

CDNA 999.8K shares-80.98%2026-08-202026-08-27

GNRC GENERAC HLDGS INC73.2K shares-2.33%2026-06-302026-08-05

EPD ENTERPRISE PRODS PARTNERS L P510.6K shares-0.72%2026-06-302026-08-05

QDEL QUIDELORTHO CORP1.0M shares155.47%2026-06-302026-08-05

Sponsored

CAKE CHEESECAKE FACTORY INC221.8K shares-1.45%2026-06-302026-08-05

EQIX EQUINIX INC16.7K shares-1.36%2026-06-302026-08-05

KMX CARMAX INC325.4K shares5.07%2026-06-302026-08-05

FRSH FRESHWORKS INC1.6M shares-9.67%2026-06-302026-08-05

PCRX PACIRA BIOSCIENCES INC608.6K shares-1.44%2026-06-302026-08-05

FIVN FIVE9 INC722.7K shares16.18%2026-06-302026-08-05

HNGE HINGE HEALTH INC183.0K shares47.25%2026-06-302026-08-05

BLFS BIOLIFE SOLUTIONS INC535.9K shares-0.11%2026-06-302026-08-05

Sponsored

PROF PROFOUND MED CORP2.0M shares0.81%2026-06-302026-08-05

CARG CARGURUS INC367.1K shares35.19%2026-06-302026-08-05

TMCI TREACE MED CONCEPTS INC3.0M shares-41.76%2026-06-302026-08-05

GAMBLING COM GROUP GAMBLING COM GROUP765.2K sharesnew addition2026-06-302026-08-05

ISRG INTUITIVE SURGICAL INC29.1K shares-7.83%2026-06-302026-08-05

BL BLACKLINE INC375.8K shares26.77%2026-06-302026-08-05

ASPN ASPEN AEROGELS INC1.5M shares-17.51%2026-06-302026-08-05

PRLB PROTO LABS INC116.3K shares4.86%2026-06-302026-08-05

Sponsored

VERX VERTEX INC761.0K shares62.54%2026-06-302026-08-05

AMPL AMPLITUDE INC1.1M shares-0.41%2026-06-302026-08-05

HZO MarineMax Inc211.5K shares-4.14%2026-06-302026-08-05

OSUR OraSure Technologies Inc1.6M shares-7.13%2026-06-302026-08-05

DV DOUBLEVERIFY HLDGS INC523.3K shares7.14%2026-06-302026-08-05

CELCUITY INC CELCUITY INC53.2K shares-0.19%2026-06-302026-08-05

CMG CHIPOTLE MEXICAN GRILL INC155.5K shares-1.51%2026-06-302026-08-05

CTRE CARETRUST REIT INC130.0K shares-2.32%2026-06-302026-08-05

Sponsored

PNTG PENNANT GROUP INC135.0K shares-1.78%2026-06-302026-08-05

WHITECAP RES INC WHITECAP RES INC435.1K shares-0.07%2026-06-302026-08-05

ICUI ICU MED INC29.4K shares-1.15%2026-06-302026-08-05

KLTR KALTURA INC3.3M shares-0.36%2026-06-302026-08-05

MICROCHIP TECHNOLOGY INC. MICROCHIP TECHNOLOGY INC.26.2K shares-2.27%2026-06-302026-08-05

GNTX GENTEX CORP57.2K shares0.40%2026-06-302026-08-05

GNL GLOBAL NET LEASE INC160.6K shares-5.60%2026-06-302026-08-05

SLG SL GREEN RLTY CORP25.9K shares0.00%2026-06-302026-08-05

Sponsored

SAM BOSTON BEER INC7.3K shares0.61%2026-06-302026-08-05

NCNO NCINO INC75.3K shares-5.27%2026-06-302026-08-05

NYCB FLAGSTAR BANK NATIONAL ASSOCIA74.5K shares-0.34%2026-06-302026-08-05

APPS DIGITAL TURBINE INC81.8K shares0.00%2026-06-302026-08-05

WEAV WEAVE COMMUNICATIONS INC157.2K shares359.29%2026-06-302026-08-05

DOCU DOCUSIGN INC20.9K shares-1.54%2026-06-302026-08-05

CNFINANCE HLDGS LTD CNFINANCE HLDGS LTD332.3K shares5.86%2026-06-302026-08-05

GOOGL ALPHABET INC2.6K shares0.00%2026-06-302026-08-05

Sponsored

MRVL MARVELL TECHNOLOGY INC2.9K shares-57.17%2026-06-302026-08-05

TECH Bio-Techne Corp12.2K shares23.80%2026-06-302026-08-05

DVN DEVON ENERGY CORP19.0K shares-0.24%2026-06-302026-08-05

MU MICRON TECHNOLOGY INC679 shares-36.95%2026-06-302026-08-05

NINTENDO LTD NINTENDO LTD70.7K shares1.40%2026-06-302026-08-05

CGNX Cognex Corp9.8K shares0.18%2026-06-302026-08-05

NVDA NVIDIA CORPORATION3.5K shares-4.30%2026-06-302026-08-05

CVLT COMMVAULT SYS INC4.9K shares11.38%2026-06-302026-08-05

Sponsored

GOOG ALPHABET INC1.9K shares-0.26%2026-06-302026-08-05

ONTO ONTO INNOVATION INC1.7K shares-23.77%2026-06-302026-08-05

T AT&T INC30.9K shares-3.73%2026-06-302026-08-05

HIMX HIMAX TECHNOLOGIES INC39.5K shares-11.78%2026-06-302026-08-05

PFE PFIZER INC23.3K shares-47.25%2026-06-302026-08-05

LTH LIFE TIME GROUP HOLDINGS INC13.5K shares-0.63%2026-06-302026-08-05

MTSI MACOM TECH SOLUTIONS HLDGS INC1.3K shares-65.10%2026-06-302026-08-05

VIAV VIAVI SOLUTIONS INC10.0K shares-31.18%2026-06-302026-08-05

Sponsored

META PLATFORMS INC META PLATFORMS INC839 shares0.00%2026-06-302026-08-05

SHOP SHOPIFY INC4.0K shares2.31%2026-06-302026-08-05

ETSY INC ETSY INC5.8K shares-0.31%2026-06-302026-08-05

SBUX STARBUCKS CORP4.0K shares-0.64%2026-06-302026-08-05

MRK MERCK & CO INC3.2K shares-0.16%2026-06-302026-08-05

CES ENERGY SOLUTIONS CORP CES ENERGY SOLUTIONS CORP33.4K shares0.00%2026-06-302026-08-05

AKAMAI TECHNOLOGIES INC AKAMAI TECHNOLOGIES INC3.2K shares9.22%2026-06-302026-08-05

WRBY WARBY PARKER INC11.4K sharesnew addition2026-06-302026-08-05

Sponsored

RNG RINGCENTRAL INC8.5K shares1.13%2026-06-302026-08-05

VCEL VERICEL CORP7.3K sharesnew addition2026-06-302026-08-05

BEYOND MEATS INC BEYOND MEATS INC381.3K sharesnew addition2026-06-302026-08-05

PLANET LABS PBC PLANET LABS PBC8.4K shares0.00%2026-06-302026-08-05

ELVA ELECTROVAYA INC26.3K shares0.19%2026-06-302026-08-05

REIN THERAPEUTICS INC REIN THERAPEUTICS INC229.1K shares-4.36%2026-06-302026-08-05

RMBS RAMBUS INC DEL1.8K shares-34.68%2026-06-302026-08-05

BX BLACKSTONE INC1.9K shares0.00%2026-06-302026-08-05

Sponsored

MSFT MICROSOFT CORP556 shares2.02%2026-06-302026-08-05

ATNM ACTINIUM PHARMACEUTICALS INC182.1K shares-9.52%2026-06-302026-08-05

PTEN PATTERSON-UTI ENERGY INC17.4K shares-94.46%2026-06-302026-08-05

REDHILL BIOPHARMA LTD REDHILL BIOPHARMA LTD88.4K shares0.00%2026-06-302026-08-05

CDNA

CAREDX INC

0.50%

Shares1.8M

Event2026-06-30

Filed2026-08-05

GENEDX HOLDINGS CORP

73.14%

Shares524.9K

Event2026-06-30

Filed2026-08-05

ENSG

ENSIGN GROUP INC

-3.21%

Shares173.9K

Event2026-06-30

Filed2026-08-05

AMRC

AMERESCO INC

-1.61%

Shares826.6K

Event2026-06-30

Filed2026-08-05

CDNA

-80.98%

Shares999.8K

Event2026-08-20

Filed2026-08-27

GNRC

GENERAC HLDGS INC

-2.33%

Shares73.2K

Event2026-06-30

Filed2026-08-05

EPD

ENTERPRISE PRODS PARTNERS L P

-0.72%

Shares510.6K

Event2026-06-30

Filed2026-08-05

QDEL

QUIDELORTHO CORP

155.47%

Shares1.0M

Event2026-06-30

Filed2026-08-05

CAKE

CHEESECAKE FACTORY INC

-1.45%

Shares221.8K

Event2026-06-30

Filed2026-08-05

EQIX

EQUINIX INC

-1.36%

Shares16.7K

Event2026-06-30

Filed2026-08-05

KMX

CARMAX INC

5.07%

Shares325.4K

Event2026-06-30

Filed2026-08-05

FRSH

FRESHWORKS INC

-9.67%

Shares1.6M

Event2026-06-30

Filed2026-08-05

PCRX

PACIRA BIOSCIENCES INC

-1.44%

Shares608.6K

Event2026-06-30

Filed2026-08-05

FIVN

FIVE9 INC

16.18%

Shares722.7K

Event2026-06-30

Filed2026-08-05

HNGE

HINGE HEALTH INC

47.25%

Shares183.0K

Event2026-06-30

Filed2026-08-05

BLFS

BIOLIFE SOLUTIONS INC

-0.11%

Shares535.9K

Event2026-06-30

Filed2026-08-05

PROF

PROFOUND MED CORP

0.81%

Shares2.0M

Event2026-06-30

Filed2026-08-05

CARG

CARGURUS INC

35.19%

Shares367.1K

Event2026-06-30

Filed2026-08-05

TMCI

TREACE MED CONCEPTS INC

-41.76%

Shares3.0M

Event2026-06-30

Filed2026-08-05

GAMBLING COM GROUP

New

Shares765.2K

Event2026-06-30

Filed2026-08-05

ISRG

INTUITIVE SURGICAL INC

-7.83%

Shares29.1K

Event2026-06-30

Filed2026-08-05

BLACKLINE INC

26.77%

Shares375.8K

Event2026-06-30

Filed2026-08-05

ASPN

ASPEN AEROGELS INC

-17.51%

Shares1.5M

Event2026-06-30

Filed2026-08-05

PRLB

PROTO LABS INC

4.86%

Shares116.3K

Event2026-06-30

Filed2026-08-05

VERX

VERTEX INC

62.54%

Shares761.0K

Event2026-06-30

Filed2026-08-05

AMPL

AMPLITUDE INC

-0.41%

Shares1.1M

Event2026-06-30

Filed2026-08-05

HZO

MarineMax Inc

-4.14%

Shares211.5K

Event2026-06-30

Filed2026-08-05

OSUR

OraSure Technologies Inc

-7.13%

Shares1.6M

Event2026-06-30

Filed2026-08-05

DOUBLEVERIFY HLDGS INC

7.14%

Shares523.3K

Event2026-06-30

Filed2026-08-05

CELCUITY INC

-0.19%

Shares53.2K

Event2026-06-30

Filed2026-08-05

CMG

CHIPOTLE MEXICAN GRILL INC

-1.51%

Shares155.5K

Event2026-06-30

Filed2026-08-05

CTRE

CARETRUST REIT INC

-2.32%

Shares130.0K

Event2026-06-30

Filed2026-08-05

PNTG

PENNANT GROUP INC

-1.78%

Shares135.0K

Event2026-06-30

Filed2026-08-05

WHITECAP RES INC

-0.07%

Shares435.1K

Event2026-06-30

Filed2026-08-05

ICUI

ICU MED INC

-1.15%

Shares29.4K

Event2026-06-30

Filed2026-08-05

KLTR

KALTURA INC

-0.36%

Shares3.3M

Event2026-06-30

Filed2026-08-05

MICROCHIP TECHNOLOGY INC.

-2.27%

Shares26.2K

Event2026-06-30

Filed2026-08-05

GNTX

GENTEX CORP

0.40%

Shares57.2K

Event2026-06-30

Filed2026-08-05

GNL

GLOBAL NET LEASE INC

-5.60%

Shares160.6K

Event2026-06-30

Filed2026-08-05

SLG

SL GREEN RLTY CORP

0.00%

Shares25.9K

Event2026-06-30

Filed2026-08-05

SAM

BOSTON BEER INC

0.61%

Shares7.3K

Event2026-06-30

Filed2026-08-05

NCNO

NCINO INC

-5.27%

Shares75.3K

Event2026-06-30

Filed2026-08-05

NYCB

FLAGSTAR BANK NATIONAL ASSOCIA

-0.34%

Shares74.5K

Event2026-06-30

Filed2026-08-05

APPS

DIGITAL TURBINE INC

0.00%

Shares81.8K

Event2026-06-30

Filed2026-08-05

WEAV

WEAVE COMMUNICATIONS INC

359.29%

Shares157.2K

Event2026-06-30

Filed2026-08-05

DOCU

DOCUSIGN INC

-1.54%

Shares20.9K

Event2026-06-30

Filed2026-08-05

CNFINANCE HLDGS LTD

5.86%

Shares332.3K

Event2026-06-30

Filed2026-08-05

GOOGL

ALPHABET INC

0.00%

Shares2.6K

Event2026-06-30

Filed2026-08-05

MRVL

MARVELL TECHNOLOGY INC

-57.17%

Shares2.9K

Event2026-06-30

Filed2026-08-05

TECH

Bio-Techne Corp

23.80%

Shares12.2K

Event2026-06-30

Filed2026-08-05

DVN

DEVON ENERGY CORP

-0.24%

Shares19.0K

Event2026-06-30

Filed2026-08-05

MICRON TECHNOLOGY INC

-36.95%

Shares679

Event2026-06-30

Filed2026-08-05

NINTENDO LTD

1.40%

Shares70.7K

Event2026-06-30

Filed2026-08-05

CGNX

Cognex Corp

0.18%

Shares9.8K

Event2026-06-30

Filed2026-08-05

NVDA

NVIDIA CORPORATION

-4.30%

Shares3.5K

Event2026-06-30

Filed2026-08-05

CVLT

COMMVAULT SYS INC

11.38%

Shares4.9K

Event2026-06-30

Filed2026-08-05

GOOG

ALPHABET INC

-0.26%

Shares1.9K

Event2026-06-30

Filed2026-08-05

ONTO

ONTO INNOVATION INC

-23.77%

Shares1.7K

Event2026-06-30

Filed2026-08-05

AT&T INC

-3.73%

Shares30.9K

Event2026-06-30

Filed2026-08-05

HIMX

HIMAX TECHNOLOGIES INC

-11.78%

Shares39.5K

Event2026-06-30

Filed2026-08-05

PFE

PFIZER INC

-47.25%

Shares23.3K

Event2026-06-30

Filed2026-08-05

LTH

LIFE TIME GROUP HOLDINGS INC

-0.63%

Shares13.5K

Event2026-06-30

Filed2026-08-05

MTSI

MACOM TECH SOLUTIONS HLDGS INC

-65.10%

Shares1.3K

Event2026-06-30

Filed2026-08-05

VIAV

VIAVI SOLUTIONS INC

-31.18%

Shares10.0K

Event2026-06-30

Filed2026-08-05

META PLATFORMS INC

0.00%

Shares839

Event2026-06-30

Filed2026-08-05

SHOP

SHOPIFY INC

2.31%

Shares4.0K

Event2026-06-30

Filed2026-08-05

ETSY INC

-0.31%

Shares5.8K

Event2026-06-30

Filed2026-08-05

SBUX

STARBUCKS CORP

-0.64%

Shares4.0K

Event2026-06-30

Filed2026-08-05

MRK

MERCK & CO INC

-0.16%

Shares3.2K

Event2026-06-30

Filed2026-08-05

CES ENERGY SOLUTIONS CORP

0.00%

Shares33.4K

Event2026-06-30

Filed2026-08-05

AKAMAI TECHNOLOGIES INC

9.22%

Shares3.2K

Event2026-06-30

Filed2026-08-05

WRBY

WARBY PARKER INC

New

Shares11.4K

Event2026-06-30

Filed2026-08-05

RNG

RINGCENTRAL INC

1.13%

Shares8.5K

Event2026-06-30

Filed2026-08-05

VCEL

VERICEL CORP

New

Shares7.3K

Event2026-06-30

Filed2026-08-05

BEYOND MEATS INC

New

Shares381.3K

Event2026-06-30

Filed2026-08-05

PLANET LABS PBC

0.00%

Shares8.4K

Event2026-06-30

Filed2026-08-05

ELVA

ELECTROVAYA INC

0.19%

Shares26.3K

Event2026-06-30

Filed2026-08-05

REIN THERAPEUTICS INC

-4.36%

Shares229.1K

Event2026-06-30

Filed2026-08-05

RMBS

RAMBUS INC DEL

-34.68%

Shares1.8K

Event2026-06-30

Filed2026-08-05

BLACKSTONE INC

0.00%

Shares1.9K

Event2026-06-30

Filed2026-08-05

MSFT

MICROSOFT CORP

2.02%

Shares556

Event2026-06-30

Filed2026-08-05

ATNM

ACTINIUM PHARMACEUTICALS INC

-9.52%

Shares182.1K

Event2026-06-30

Filed2026-08-05

PTEN

PATTERSON-UTI ENERGY INC

-94.46%

Shares17.4K

Event2026-06-30

Filed2026-08-05

REDHILL BIOPHARMA LTD

0.00%

Shares88.4K

Event2026-06-30

Filed2026-08-05

Call Option Holdings

No call option holdings data available

Put Option Holdings

No put option holdings data available