Ardsley Advisory Partners LP

In its 13F for Q2 2024 (holdings as of June 30, 2024, filed August 14, 2024), Ardsley Advisory Partners LP reported 108 stock positions worth $552.7 million. Its top holding was Sunrun (RUN) at 5.0% of the portfolio, followed by Ftai Aviation (FTAI, 4.7%) and Celestica (CLS, 4.7%). Compared with Q1 2024, it opened 32 new positions, sold out of 48, added to 33 and reduced 40. The biggest buy was a new position in Qorvo (QRVO) and the biggest sale an exit from SS SPDR S&P 500 ETF Trust-US (SPY).

Most Recent 13F
Q2 2026
Location
Norwalk, CT
CIK
0000900529
Portfolio Value
$552.7M (Q2 2024)
SEC Filing
0001172661-24-003400 ↗ filed Aug 14, 2024

Holdings Value

0$200.0M$400.0M$600.0M$800.0M$1.0B Q1 2024: $696.1M Q1 2024 Q2 2024: $552.7M $552.7M Q2 2024 Q3 2024: $528.5M Q3 2024 Q4 2024: $516.3M Q4 2024 Q1 2025: $431.7M Q1 2025 Q2 2025: $611.9M Q2 2025 Q3 2025: $652.1M Q3 2025 Q4 2025: $785.4M Q4 2025 Q1 2026: $656.4M Q1 2026 Q2 2026: $921.1M Q2 2026

Holdings 108 stocks · $552.7M

RUN Sunrun Inc. 5.01% 2,357,750 $27.7M Reduce -36.2%
FTAI Ftai Aviation Ltd. 4.70% 251,500 $26.0M Reduce -0.4%
CLS Celestica Inc. 4.67% 450,000 $25.8M Reduce -42.0%
ITRI Itron Inc. 4.03% 225,000 $22.3M Reduce -7.2%
OSCR Oscar Health Inc. Class A 3.72% 1,281,300 $20.6M Reduce -7.4%
BIOX Bioceres Crop Solutions Corp. 3.51% 1,732,573 $19.4M Reduce -0.1%
PCRX Pacira Biosciences Inc. 3.00% 580,000 $16.6M Add +17.6%
HASI Ha Sustainable Infrastructur filed as HANNON ARMSTRONG SUST INFR C 2.92% 545,500 $16.1M Reduce -24.9%
FLR Fluor Corp. 2.90% 367,500 $16.0M Reduce -9.9%
STKL Sunopta Inc. 2.88% 2,945,000 $15.9M Reduce -19.6%
MRVL Marvell Technology Inc. 2.48% 196,000 $13.7M Add +119.5%
MSFT Microsoft Corp. 2.02% 24,950 $11.2M Add +117.0%
NVDA Nvidia Corp. 1.85% 83,000 $10.2M Add +32.8%
GSM Ferroglobe PLC 1.80% 1,859,345 $10.0M Reduce -18.3%
QRVO Qorvo Inc. 1.80% 85,800 $10.0M New
ASPN Aspen Aerogels Inc. 1.70% 395,000 $9.4M Reduce -54.3%
DELL Dell Technologies -C 1.70% 68,100 $9.4M Add +51.3%
S Sentinelone Inc. Class A 1.70% 445,950 $9.4M Reduce -16.8%
BRBR Bellring Brands Inc. 1.55% 150,000 $8.6M Reduce -6.3%
FSLR First Solar Inc. 1.51% 37,000 $8.3M Add +184.6%
AGI Alamos Gold Inc. Class A 1.42% 500,000 $7.8M Reduce -13.3%
TER Teradyne Inc. 1.39% 51,800 $7.7M Add +95.5%
DKNG Draftkings Inc. Class A 1.38% 200,000 $7.6M Add +33.3%
DAL Delta Air Lines Inc. 1.33% 155,000 $7.4M Add +10.7%
INDV Indivior Ltd. 1.27% 435,000 $7.0M Add +64.2%
PANW Palo Alto Networks Inc. 1.24% 20,200 $6.8M Add +405.0%
PCOR Procore Technologies Inc. 1.20% 100,000 $6.6M Reduce -20.0%
MIRM Mirum Pharmaceuticals Inc. 1.11% 180,000 $6.2M Reduce -26.5%
TXN Texas Instruments Inc. 1.11% 31,600 $6.1M Add +26.9%
IGV iShares Expanded Tech-Softwa 1.10% 70,000 $6.1M New
SMTC Semtech Corp. 1.09% 201,400 $6.0M Add +162.4%
AMPS Altus Power Inc. 1.08% 1,526,000 $6.0M Reduce -10.5%
OKTA Okta Inc. 1.08% 63,900 $6.0M Add +300.6%
XIFR XPLR Infrastructure LP filed as NEXTERA ENERGY PARTNERS LP 1.05% 210,000 $5.8M Reduce -22.2%
AMZN Amazon.com Inc. 1.05% 30,000 $5.8M Add +15.4%
AMRC Ameresco Inc. Class A 1.02% 195,000 $5.6M New
DT Dynatrace Inc. 1.00% 123,500 $5.5M Reduce -9.8%
WDC Western Digital Corp. 0.99% 72,000 $5.5M Add +65.5%
ORCL Oracle Corp. 0.97% 38,000 $5.4M Reduce -55.6%
TEL Te Connectivity Ltd. 0.96% 35,400 $5.3M Add +282.7%
FIVN FIVE9 Inc. 0.96% 120,000 $5.3M Reduce -27.7%
NOW ServiceNow Inc. 0.91% 6,400 $5.0M Add +56.1%
AAPL Apple Inc. 0.90% 23,500 $4.9M Reduce -6.0%
TSM Taiwan Semiconductor-SP ADR 0.89% 28,300 $4.9M Reduce -18.6%
GOOG Alphabet Inc. Class C 0.88% 26,500 $4.9M Add +32.5%
ZS Zscaler Inc. 0.88% 25,200 $4.8M New
SGRY Surgery Partners Inc. 0.82% 190,000 $4.5M Add +2.7%
CRM Salesforce Inc. 0.79% 17,000 $4.4M Reduce -22.0%
TEVA Teva Pharmaceutical-SP ADR 0.74% 250,750 $4.1M New
APLD Applied Digital Corp. 0.68% 632,000 $3.8M Add +9.9%
NUGT Dirxn DLY GM Indx B2X ETF-Ui 0.65% 95,000 $3.6M New
UBER Uber Technologies Inc. 0.62% 47,000 $3.4M Reduce -6.0%
CLNE Clean Energy Fuels Corp. 0.57% 1,175,000 $3.1M Add +161.1%
COHR Coherent Corp. 0.55% 42,000 $3.0M Reduce -25.0%
ONTO Onto Innovation Inc. 0.54% 13,500 $3.0M New
SNX TD Synnex Corp. 0.48% 23,000 $2.7M Add +150.0%
WDAY Workday Inc. Class A 0.47% 11,500 $2.6M New
LYFT LYFT Inc. Class A 0.45% 176,800 $2.5M New
MYRG MYR Group Inc./Delaware 0.43% 17,500 $2.4M New
GLBE Global-E Online Ltd. 0.41% 62,500 $2.3M New
EOSE Eos Energy Enterprises Inc. 0.35% 1,500,000 $1.9M Reduce -56.5%
STEM Stem Inc. 0.35% 1,750,000 $1.9M Reduce -22.6%
PRIM Primoris Services Corp. 0.34% 38,000 $1.9M Add +38.2%
PROF Profound Medical Corp. 0.33% 215,000 $1.8M Add +48.3%
MGNI Magnite Inc. 0.32% 132,950 $1.8M Add +44.5%
ALT Altimmune Inc. 0.30% 250,000 $1.7M Reduce -9.1%
MTZ Mastec Inc. 0.29% 15,000 $1.6M Add +43.5%
VSH Vishay Intertechnology Inc. 0.29% 71,400 $1.6M Add +155.0%
ARRY Array Technologies Inc. 0.28% 150,300 $1.5M Reduce -33.1%
ADBE Adobe Inc. 0.28% 2,750 $1.5M Add +175.0%
RAPT THERAPEUTICS INC 0.28% 500,000 $1.5M Add +24.2%
EVLV Evolv Technologies Holdings 0.24% 509,600 $1.3M Reduce -66.7%
ALAB Astera Labs Inc. 0.22% 20,500 $1.2M New
GLW Corning Inc. 0.22% 31,650 $1.2M New
ACLS Axcelis Technologies Inc. 0.21% 8,200 $1.2M New
TYL Tyler Technologies Inc. 0.20% 2,250 $1.1M New
MIR Mirion Technologies Inc. 0.19% 100,000 $1.1M Reduce -20.0%
NXE Nexgen Energy Ltd. 0.19% 151,500 $1.1M No change
FLUT Flutter Entertainment PLC-Di 0.19% 5,600 $1.0M New
DNN Denison Mines Corp. 0.18% 500,000 $995K No change
ADSK Autodesk Inc. 0.18% 4,000 $990K New
HUCK Huckleberry AI Inc. filed as DOMO INC 0.18% 125,600 $970K New
AMSC American Superconductor Corp. 0.17% 40,000 $936K Reduce -46.7%
DY Dycom Industries Inc. 0.16% 5,150 $869K New
SLV iShares Silver Trust 0.15% 30,200 $802K Reduce -87.9%
GPRE Green Plains Inc. 0.14% 50,000 $793K Reduce -28.6%
WPM Wheaton Precious Metals Corp. 0.14% 15,000 $786K New
CMRC Commerce.com Inc. filed as BIGCOMMERCE HLDGS INC 0.14% 93,000 $750K New
URA Global X Uranium ETF 0.13% 25,000 $724K New
ENVX Enovix Corp. 0.13% 45,000 $696K Add +80.0%
GDX Vaneck Gold Miners ETF 0.12% 20,000 $678K Reduce -80.0%
AEHR Aehr Test Systems 0.12% 60,000 $670K Add +140.0%
ROG Rogers Corp. 0.11% 5,000 $603K New
ALTG Alta Equipment Group Inc. 0.11% 75,000 $603K Reduce -40.0%
WOLF Wolfspeed Inc. 0.10% 25,000 $569K Reduce -85.3%
ZUO Zuora Inc. Class A 0.09% 52,000 $516K New
ENPH Enphase Energy Inc. 0.09% 5,000 $499K New
CWEN Clearway Energy Inc. Class C 0.09% 20,000 $494K New
FLNC Fluence Energy Inc. 0.08% 25,000 $434K New
CIFR Cipher Digital Inc. 0.08% 100,000 $415K New
BL Blackline Inc. 0.07% 8,500 $412K New
FAN First Trust Global Wind Ener 0.07% 25,000 $405K New
NOVAQ Sunnova Energy International 0.05% 50,000 $282K Reduce -66.7%
WULF Terawulf Inc. 0.04% 50,000 $223K New
OPAL Opal Fuels Inc. Class A 0.04% 50,000 $205K New
MP MP Materials Corp. 0.03% 15,000 $191K Add +50.0%
AES AES Corp. 0.03% 10,000 $176K Reduce -60.0%
SPRU Spruce Power Holding Corp. 0.01% 13,512 $49K No change

Options reported separately and not counted above: SPY puts ($54.4M), RUN calls ($16.0M), ASPN calls ($9.5M), SNX calls ($4.6M), PCRX calls ($4.6M), QCOM puts ($4.3M), APLD calls ($3.6M), WOLF calls ($3.4M), AMD puts ($2.8M), GSM calls ($2.7M), FTNT puts ($2.4M), DELL calls ($2.1M), and 20 more.

Portfolio Sells Q1 2024 → Q2 2024

SPY SS SPDR S&P 500 ETF Trust-US Sold out 0.00% −7.51
RUN Sunrun Inc. Reduce -36.2% 5.01% −2.00
GLD SPDR Gold Shares Sold out 0.00% −1.62
VST Vistra Corp. Sold out 0.00% −1.41
MSOS Advisorshares Pure US Cann Sold out 0.00% −1.36
MRK Merck & Co. Inc. Sold out 0.00% −1.16
LEGN Legend Biotech Corp.-ADR Sold out 0.00% −1.13
ANET Arista Networks Inc. Sold out 0.00% −1.12
INFN Infinera Corp. Sold out 0.00% −1.06
AVGO Broadcom Inc. Sold out 0.00% −1.05
FOUR SHIFT4 Payments Inc. Class A Sold out 0.00% −0.95
EVLV Evolv Technologies Holdings Reduce -66.7% 0.24% −0.75
STKL Sunopta Inc. Reduce -19.6% 2.88% −0.74
SLV iShares Silver Trust Reduce -87.9% 0.15% −0.67
AMD Advanced Micro Devices Sold out 0.00% −0.65
WOLF Wolfspeed Inc. Reduce -85.3% 0.10% −0.62
EXAS Exact Sciences Corp. Sold out 0.00% −0.60
ORCL Oracle Corp. Reduce -55.6% 0.97% −0.57
NFLX Netflix Inc. Sold out 0.00% −0.53
FIVN FIVE9 Inc. Reduce -27.7% 0.96% −0.52
ARM Arm Holdings PLC-ADR Sold out 0.00% −0.48
ASPN Aspen Aerogels Inc. Reduce -54.3% 1.70% −0.48
QCOM Qualcomm Inc. Sold out 0.00% −0.40
CYBR Cyberark Software Ltd./Israel Sold out 0.00% −0.39
STEM Stem Inc. Reduce -22.6% 0.35% −0.36
CLS Celestica Inc. Reduce -42.0% 4.67% −0.34
GDX Vaneck Gold Miners ETF Reduce -80.0% 0.12% −0.33
AUGX Augmedix Inc. Sold out 0.00% −0.31
EBAY eBay Inc. Sold out 0.00% −0.31
PCOR Procore Technologies Inc. Reduce -20.0% 1.20% −0.28
ETN Eaton Corp. PLC Sold out 0.00% −0.25
FTNT Fortinet Inc. Sold out 0.00% −0.25
BASE Couchbase Inc. Sold out 0.00% −0.24
TBT Proshares Ultrashort 20+Y TR Sold out 0.00% −0.24
NET Cloudflare Inc. Class A Sold out 0.00% −0.23
MOD Modine Manufacturing Co. Sold out 0.00% −0.22
ARRY Array Technologies Inc. Reduce -33.1% 0.28% −0.20
NXH Neighborhood Intelligence Inc. Sold out 0.00% −0.18
SANM Sanmina Corp. Sold out 0.00% −0.18
EOSE Eos Energy Enterprises Inc. Reduce -56.5% 0.35% −0.16
MDB Mongodb Inc. Sold out 0.00% −0.15
CRM Salesforce Inc. Reduce -22.0% 0.79% −0.15
IREN Iren Ltd. Sold out 0.00% −0.15
CIEN Ciena Corp. Sold out 0.00% −0.14
GDXJ Vaneck Junior Gold Miners Sold out 0.00% −0.14
ALTG Alta Equipment Group Inc. Reduce -40.0% 0.11% −0.12
TRIP Tripadvisor Inc. Sold out 0.00% −0.12
XIFR XPLR Infrastructure LP Reduce -22.2% 1.05% −0.12
FIX Comfort Systems USA Inc. Sold out 0.00% −0.11
JNPR Juniper Networks Inc. Sold out 0.00% −0.11

Portfolio Buys Q1 2024 → Q2 2024

QRVO Qorvo Inc. New 1.80% +1.80
MRVL Marvell Technology Inc. Add +119.5% 2.48% +1.57
MSFT Microsoft Corp. Add +117.0% 2.02% +1.33
FSLR First Solar Inc. Add +184.6% 1.51% +1.19
IGV iShares Expanded Tech-Softwa New 1.10% +1.10
PANW Palo Alto Networks Inc. Add +405.0% 1.24% +1.08
NVDA Nvidia Corp. Add +32.8% 1.85% +1.04
AMRC Ameresco Inc. Class A New 1.02% +1.02
DELL Dell Technologies -C Add +51.3% 1.70% +0.96
TER Teradyne Inc. Add +95.5% 1.39% +0.96
PCRX Pacira Biosciences Inc. Add +17.6% 3.00% +0.93
ZS Zscaler Inc. New 0.88% +0.88
OKTA Okta Inc. Add +300.6% 1.08% +0.84
SMTC Semtech Corp. Add +162.4% 1.09% +0.79
TEL Te Connectivity Ltd. Add +282.7% 0.96% +0.77
TEVA Teva Pharmaceutical-SP ADR New 0.74% +0.74
NUGT Dirxn DLY GM Indx B2X ETF-Ui New 0.65% +0.65
WDC Western Digital Corp. Add +65.5% 0.99% +0.56
ONTO Onto Innovation Inc. New 0.54% +0.54
TXN Texas Instruments Inc. Add +26.9% 1.11% +0.49
WDAY Workday Inc. Class A New 0.47% +0.47
NOW ServiceNow Inc. Add +56.1% 0.91% +0.46
INDV Indivior Ltd. Add +64.2% 1.27% +0.45
LYFT LYFT Inc. Class A New 0.45% +0.45
GOOG Alphabet Inc. Class C Add +32.5% 0.88% +0.44
MYRG MYR Group Inc./Delaware New 0.43% +0.43
GLBE Global-E Online Ltd. New 0.41% +0.41
DKNG Draftkings Inc. Class A Add +33.3% 1.38% +0.40
CLNE Clean Energy Fuels Corp. Add +161.1% 0.57% +0.39
AMZN Amazon.com Inc. Add +15.4% 1.05% +0.38
DAL Delta Air Lines Inc. Add +10.7% 1.33% +0.37
SNX TD Synnex Corp. Add +150.0% 0.48% +0.33
APLD Applied Digital Corp. Add +9.9% 0.68% +0.33
ALAB Astera Labs Inc. New 0.22% +0.22
GLW Corning Inc. New 0.22% +0.22
ACLS Axcelis Technologies Inc. New 0.21% +0.21
TYL Tyler Technologies Inc. New 0.20% +0.20
ADBE Adobe Inc. Add +175.0% 0.28% +0.20
VSH Vishay Intertechnology Inc. Add +155.0% 0.29% +0.20
FLUT Flutter Entertainment PLC-Di New 0.19% +0.19
ADSK Autodesk Inc. New 0.18% +0.18
MGNI Magnite Inc. Add +44.5% 0.32% +0.18
HUCK Huckleberry AI Inc. New 0.18% +0.18
PRIM Primoris Services Corp. Add +38.2% 0.34% +0.17
DY Dycom Industries Inc. New 0.16% +0.16
MTZ Mastec Inc. Add +43.5% 0.29% +0.15
PROF Profound Medical Corp. Add +48.3% 0.33% +0.15
WPM Wheaton Precious Metals Corp. New 0.14% +0.14
CMRC Commerce.com Inc. New 0.14% +0.14
URA Global X Uranium ETF New 0.13% +0.13

Options Activity Q1 2024 → Q2 2024

SPY SS SPDR S&P 500 ETF Trust-US put New 100,000 $54.4M
RUN Sunrun Inc. call New 1,350,000 $16.0M
ASPN Aspen Aerogels Inc. call New 400,000 $9.5M
SNX TD Synnex Corp. call New 40,000 $4.6M
PCRX Pacira Biosciences Inc. call New 160,000 $4.6M
QCOM Qualcomm Inc. put New 21,500 $4.3M
APLD Applied Digital Corp. call New 600,000 $3.6M
WOLF Wolfspeed Inc. call New 150,000 $3.4M
AMD Advanced Micro Devices put New 17,000 $2.8M
GSM Ferroglobe PLC call New 500,500 $2.7M
FTNT Fortinet Inc. put New 40,000 $2.4M
DELL Dell Technologies -C call New 15,000 $2.1M
INDV Indivior Ltd. call New 125,000 $2.0M
OKTA Okta Inc. call New 20,000 $1.9M
UNG US Natural Gas Fund LP call New 100,000 $1.7M
OSCR Oscar Health Inc. Class A call New 100,000 $1.6M
TEL Te Connectivity Ltd. call New 10,000 $1.5M
INFN Infinera Corp. call New 240,000 $1.5M
MRVL Marvell Technology Inc. call New 20,000 $1.4M
DT Dynatrace Inc. call New 20,000 $895K
EOSE Eos Energy Enterprises Inc. call New 650,000 $826K
S Sentinelone Inc. Class A call New 30,000 $632K
BE Bloom Energy Corp. Class A call New 50,000 $612K
CNXC Concentrix Corp. put New 9,000 $570K
VSH Vishay Intertechnology Inc. call New 25,000 $558K
LYFT LYFT Inc. Class A call New 35,000 $494K
SMTC Semtech Corp. call New 15,000 $448K
CIFR Cipher Digital Inc. call New 100,000 $415K
MCD McDonald's Corp. put New 1,500 $382K
HUCK Huckleberry AI Inc. call New 30,000 $232K
ZUO Zuora Inc. Class A call New 10,000 $99K
CMRC Commerce.com Inc. call New 5,000 $40K

Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 130$921.1MSNDK, AMD, SEZL, WULF, BTSG
Q1 2026 117$656.4MUTHR, AVGO, SNDK, AMZN, ANET
Q4 2025 113$785.4MLLY, FSLR, LITE, AVGO, RUN
Q3 2025 99$652.1MFSLR, HUT, RUN, ORCL, AVGO
Q2 2025 108$611.9MFLR, NVDA, ANET, ORCL, AVGO
Q1 2025 102$431.7MFLR, AVGO, AGI, CLS, OKTA
Q4 2024 101$516.3MCRM, FLR, ITRI, OSCR, INDV
Q3 2024 109$528.5MOSCR, ITRI, RUN, FLR, CLS
Q2 2024 108$552.7MRUN, FTAI, CLS, ITRI, OSCR
Q1 2024 124$696.1MSPY, RUN, CLS, STKL, ITRI