Ardsley Advisory Partners LP

In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 14, 2025), Ardsley Advisory Partners LP reported 101 stock positions worth $516.3 million. Its top holding was Salesforce (CRM) at 6.0% of the portfolio, followed by Fluor (FLR, 5.3%) and Itron (ITRI, 2.9%). Compared with Q3 2024, it opened 37 new positions, sold out of 46, added to 34 and reduced 24. The biggest buy was Salesforce (CRM, shares +183%) and the biggest sale Sunrun (RUN, shares −16%).

Most Recent 13F
Q2 2026
Location
Norwalk, CT
CIK
0000900529
Portfolio Value
$516.3M (Q4 2024)
SEC Filing
0001172661-25-000980 ↗ filed Feb 14, 2025

Holdings Value

0$200.0M$400.0M$600.0M$800.0M$1.0B Q1 2024: $696.1M Q1 2024 Q2 2024: $552.7M Q2 2024 Q3 2024: $528.5M Q3 2024 Q4 2024: $516.3M $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 101 stocks · $516.3M

CRM Salesforce Inc. 5.96% 92,000 $30.8M Add +183.1%
FLR Fluor Corp. 5.30% 555,000 $27.4M Add +65.5%
ITRI Itron Inc. 2.94% 140,000 $15.2M Reduce -26.3%
OSCR Oscar Health Inc. Class A 2.93% 1,125,000 $15.1M Add +2.0%
INDV Indivior Ltd. 2.89% 1,200,000 $14.9M Add +24.8%
MSFT Microsoft Corp. 2.45% 30,000 $12.6M Reduce -3.2%
AMZN Amazon.com Inc. 2.23% 52,500 $11.5M Add +5.0%
WULF Terawulf Inc. 2.12% 1,950,000 $11.0M Reduce -0.4%
STKL Sunopta Inc. 2.07% 1,390,000 $10.7M Reduce -17.3%
LITE Lumentum Holdings Inc. 2.03% 124,950 $10.5M New
UNH Unitedhealth Group Inc. 1.96% 20,000 $10.1M New
CAMT Camtek Ltd. 1.96% 125,000 $10.1M Add +792.9%
NFLX Netflix Inc. 1.90% 11,000 $9.8M Add +100.0%
AGI Alamos Gold Inc. Class A 1.87% 525,000 $9.7M Add +31.3%
TAC Transalta Corp. 1.85% 675,000 $9.5M Reduce -25.0%
RUN Sunrun Inc. 1.69% 945,000 $8.7M Reduce -15.6%
GLW Corning Inc. 1.66% 180,000 $8.6M Add +18.8%
FLNC Fluence Energy Inc. 1.58% 515,000 $8.2M Add +5050.0%
NOW ServiceNow Inc. 1.56% 7,600 $8.1M New
BRBR Bellring Brands Inc. 1.53% 105,000 $7.9M No change
MIRM Mirum Pharmaceuticals Inc. 1.52% 190,000 $7.9M No change
OKTA Okta Inc. 1.49% 97,200 $7.7M New
SMCI Super Micro Computer Inc. 1.44% 245,000 $7.4M New
FSLR First Solar Inc. 1.40% 41,000 $7.2M Add +46.4%
MRVL Marvell Technology Inc. 1.28% 60,000 $6.6M Reduce -54.6%
TEVA Teva Pharmaceutical-SP ADR 1.28% 300,000 $6.6M Reduce -15.0%
AVGO Broadcom Inc. 1.26% 28,000 $6.5M Reduce -66.9%
BIOX Bioceres Crop Solutions Corp. 1.25% 1,064,614 $6.5M Reduce -32.6%
GSM Ferroglobe PLC 1.23% 1,667,595 $6.3M Reduce -12.9%
PYPL PayPal Holdings Inc. 1.22% 74,000 $6.3M Add +236.4%
LSCC Lattice Semiconductor Corp. 1.21% 110,500 $6.3M Add +211.3%
ELAN Elanco Animal Health Inc. 1.17% 500,000 $6.1M Reduce -13.0%
META Meta Platforms Inc. Class A 1.13% 10,000 $5.9M New
AES AES Corp. 1.12% 450,000 $5.8M Add +1084.2%
S Sentinelone Inc. Class A 1.12% 260,000 $5.8M Reduce -59.1%
ALDX Aldeyra Therapeutics Inc. 1.11% 1,150,000 $5.7M Add +130.0%
GOOG Alphabet Inc. Class C 1.11% 30,100 $5.7M Add +1104.0%
SGRY Surgery Partners Inc. 1.11% 270,200 $5.7M Add +6.0%
DKNG Draftkings Inc. Class A 1.08% 150,000 $5.6M Reduce -11.8%
CLS Celestica Inc. 1.07% 60,000 $5.5M Reduce -80.0%
TEL Te Connectivity PLC 1.02% 36,800 $5.3M Reduce -1.9%
FTAI Ftai Aviation Ltd. 0.98% 35,000 $5.0M Reduce -2.9%
TER Teradyne Inc. 0.96% 39,500 $5.0M New
MTZ Mastec Inc. 0.90% 34,000 $4.6M Reduce -37.3%
IREN Iren Ltd. filed as IREN LIMITED 0.86% 450,000 $4.4M Reduce -28.0%
CLNE Clean Energy Fuels Corp. 0.85% 1,750,000 $4.4M Add +14.8%
TSM Taiwan Semiconductor-SP ADR 0.84% 22,000 $4.4M New
AVAV Aerovironment Inc. 0.82% 27,500 $4.2M New
EXPE Expedia Group Inc. 0.79% 22,000 $4.1M New
CCJ Cameco Corp. 0.75% 75,000 $3.9M Reduce -16.9%
GTLS Chart Industries Inc. 0.74% 20,000 $3.8M New
SNOW Snowflake Inc. 0.72% 24,000 $3.7M Add +220.0%
MP MP Materials Corp. 0.69% 230,000 $3.6M Add +318.2%
ONTO Onto Innovation Inc. 0.69% 21,400 $3.6M Add +7.5%
BILL Bill Holdings Inc. 0.67% 41,000 $3.5M New
XIFR XPLR Infrastructure LP filed as NEXTERA ENERGY PARTNERS LP 0.66% 190,000 $3.4M Add +850.0%
TEAM Atlassian Corp. Class A 0.61% 12,950 $3.2M New
ASPN Aspen Aerogels Inc. 0.60% 261,100 $3.1M Add +108.9%
MU Micron Technology Inc. 0.57% 35,000 $2.9M Add +188.1%
AEIS Advanced Energy Industries 0.56% 25,000 $2.9M Reduce -16.7%
GEAR Revelyst Inc. 0.56% 150,000 $2.9M No change
P Everpure Inc. Class A filed as PURE STORAGE INC 0.54% 45,000 $2.8M New
MELI MercadoLibre Inc. 0.53% 1,600 $2.7M New
RSP Invesco S&P 500 Equal Weight 0.51% 15,000 $2.6M New
ARM Arm Holdings PLC-ADR 0.48% 20,000 $2.5M New
AMSC American Superconductor Corp. 0.48% 100,000 $2.5M No change
ENPH Enphase Energy Inc. 0.47% 35,000 $2.4M New
PROF Profound Medical Corp. 0.43% 295,000 $2.2M Add +7.3%
XYZ Block Inc. 0.43% 26,000 $2.2M New
MIR Mirion Technologies Inc. 0.42% 125,000 $2.2M No change
NET Cloudflare Inc. Class A 0.41% 20,000 $2.1M New
CIEN Ciena Corp. 0.41% 25,000 $2.1M New
CYBR Cyberark Software Ltd./Israel 0.39% 6,000 $2.0M New
ZS Zscaler Inc. 0.36% 10,300 $1.9M New
DNN Denison Mines Corp. 0.35% 1,000,000 $1.8M Add +100.0%
BE Bloom Energy Corp. Class A 0.34% 80,000 $1.8M Add +6.7%
T AT&T Inc. 0.33% 75,000 $1.7M New
ETN Eaton Corp. PLC 0.32% 5,000 $1.7M New
EBAY eBay Inc. 0.32% 26,500 $1.6M Add +341.7%
ORN Orion Group Holdings Inc. 0.28% 200,000 $1.5M No change
NXE Nexgen Energy Ltd. 0.26% 200,000 $1.3M Add +23.8%
TOST Toast Inc. Class A 0.25% 35,000 $1.3M New
VIAV Viavi Solutions Inc. 0.24% 123,000 $1.2M New
REAL BROKERAGE INC/THE filed as THE REAL BROKERAGE INC 0.22% 250,000 $1.1M Reduce -58.3%
PCOR Procore Technologies Inc. 0.22% 15,000 $1.1M Reduce -75.0%
CLMT Calumet Inc. 0.21% 50,000 $1.1M Add +42.9%
ORA Ormat Technologies Inc. 0.20% 15,000 $1.0M New
WDC Western Digital Corp. 0.20% 17,000 $1.0M New
MDU Mdu Resources Group Inc. 0.17% 50,000 $901K Add +100.0%
ECG Everus Construction Group 0.16% 12,500 $822K Add +100.0%
HASI Ha Sustainable Infrastructur 0.16% 30,000 $805K Add +18.8%
BNED Barnes & Noble Education Inc. 0.16% 80,000 $803K New
RIOT Riot Platforms Inc. 0.15% 75,000 $766K New
NCNO Ncino Inc. 0.13% 20,000 $672K New
AIOT Powerfleet Inc. 0.13% 100,000 $666K New
OPAL Opal Fuels Inc. Class A 0.10% 150,000 $509K Add +20.0%
ASAN Asana Inc. Class A 0.10% 25,000 $507K New
COMP Compass Inc. Class A 0.07% 60,000 $351K New
INTC Intel Corp. 0.06% 16,500 $331K New
AMPS Altus Power Inc. 0.06% 80,000 $326K Reduce -95.0%

Show all 101 holdings

Options reported separately and not counted above: ANET puts ($11.9M), RSP calls ($10.5M), SMTC puts ($7.7M), CRM calls ($6.7M), NVDA puts ($6.3M), INTC calls ($6.1M), FXI calls ($6.1M), GOOG calls ($5.7M), FTNT puts ($5.2M), SNOW calls ($3.9M), WULF calls ($3.7M), MU calls ($3.4M), and 30 more.

Portfolio Sells Q3 2024 → Q4 2024

RUN Sunrun Inc. Reduce -15.6% 1.69% −2.13
SMCI Super Micro Computer Inc. Sold out 0.00% −2.01
ORCL Oracle Corp. Sold out 0.00% −1.92
SMTC Semtech Corp. Sold out 0.00% −1.90
CLS Celestica Inc. Reduce -80.0% 1.07% −1.83
S Sentinelone Inc. Class A Reduce -59.1% 1.12% −1.76
NVDA Nvidia Corp. Sold out 0.00% −1.70
AVGO Broadcom Inc. Reduce -66.9% 1.26% −1.50
PANW Palo Alto Networks Inc. Sold out 0.00% −1.36
DT Dynatrace Inc. Sold out 0.00% −1.27
AMRC Ameresco Inc. Class A Sold out 0.00% −1.22
SLV iShares Silver Trust Sold out 0.00% −1.21
AAPL Apple Inc. Sold out 0.00% −1.15
DY Dycom Industries Inc. Sold out 0.00% −1.12
ILMN Illumina Inc. Sold out 0.00% −1.11
HUT Hut 8 Corp. Sold out 0.00% −1.10
BIOX Bioceres Crop Solutions Corp. Reduce -32.6% 1.25% −1.10
KWEB Kranesh Csi China Internet Sold out 0.00% −0.97
TXN Texas Instruments Inc. Sold out 0.00% −0.94
AMPS Altus Power Inc. Reduce -95.0% 0.06% −0.91
ITRI Itron Inc. Reduce -26.3% 2.94% −0.90
ADSK Autodesk Inc. Sold out 0.00% −0.89
NUGT Dirxn DLY GM Indx B2X ETF-Ui Sold out 0.00% −0.70
AEHR Aehr Test Systems Sold out 0.00% −0.66
ON On Semiconductor Sold out 0.00% −0.60
URA Global X Uranium ETF Sold out 0.00% −0.54
MRVL Marvell Technology Inc. Reduce -54.6% 1.28% −0.52
WDAY Workday Inc. Class A Sold out 0.00% −0.51
PCOR Procore Technologies Inc. Reduce -75.0% 0.22% −0.48
GSM Ferroglobe PLC Reduce -12.9% 1.23% −0.45
BIDU Baidu Inc. - Spon ADR Sold out 0.00% −0.44
ELAN Elanco Animal Health Inc. Reduce -13.0% 1.17% −0.43
REAL BROKERAGE INC/THE Reduce -58.3% 0.22% −0.41
BL Blackline Inc. Sold out 0.00% −0.41
ADBE Adobe Inc. Sold out 0.00% −0.39
MTZ Mastec Inc. Reduce -37.3% 0.90% −0.37
AKAM Akamai Technologies Inc. Sold out 0.00% −0.34
GDXJ Vaneck Junior Gold Miners Sold out 0.00% −0.32
MYRG MYR Group Inc./Delaware Sold out 0.00% −0.29
FLUT Flutter Entertainment PLC-Di Sold out 0.00% −0.27
GDX Vaneck Gold Miners ETF Sold out 0.00% −0.26
CEVA Ceva Inc. Sold out 0.00% −0.25
DOCN Digitalocean Holdings Inc. Sold out 0.00% −0.23
WPM Wheaton Precious Metals Corp. Sold out 0.00% −0.23
BOX Box Inc. Class A Sold out 0.00% −0.22
HUBB Hubbell Inc. Sold out 0.00% −0.20
DKNG Draftkings Inc. Class A Reduce -11.8% 1.08% −0.18
SHLS Shoals Technologies Group -A Sold out 0.00% −0.17
FIVN FIVE9 Inc. Sold out 0.00% −0.16
VECO Veeco Instruments Inc. Sold out 0.00% −0.16

Portfolio Buys Q3 2024 → Q4 2024

CRM Salesforce Inc. Add +183.1% 5.96% +4.27
FLR Fluor Corp. Add +65.5% 5.30% +2.27
LITE Lumentum Holdings Inc. New 2.03% +2.03
UNH Unitedhealth Group Inc. New 1.96% +1.96
CAMT Camtek Ltd. Add +792.9% 1.96% +1.74
NOW ServiceNow Inc. New 1.56% +1.56
FLNC Fluence Energy Inc. Add +5050.0% 1.58% +1.54
OKTA Okta Inc. New 1.49% +1.49
SMCI Super Micro Computer Inc. New 1.44% +1.44
NFLX Netflix Inc. Add +100.0% 1.90% +1.16
META Meta Platforms Inc. Class A New 1.13% +1.13
INDV Indivior Ltd. Add +24.8% 2.89% +1.11
GOOG Alphabet Inc. Class C Add +1104.0% 1.11% +1.03
AES AES Corp. Add +1084.2% 1.12% +0.98
TER Teradyne Inc. New 0.96% +0.96
PYPL PayPal Holdings Inc. Add +236.4% 1.22% +0.90
LSCC Lattice Semiconductor Corp. Add +211.3% 1.21% +0.86
TSM Taiwan Semiconductor-SP ADR New 0.84% +0.84
AVAV Aerovironment Inc. New 0.82% +0.82
EXPE Expedia Group Inc. New 0.79% +0.79
GTLS Chart Industries Inc. New 0.74% +0.74
BILL Bill Holdings Inc. New 0.67% +0.67
TEAM Atlassian Corp. Class A New 0.61% +0.61
ALDX Aldeyra Therapeutics Inc. Add +130.0% 1.11% +0.60
SNOW Snowflake Inc. Add +220.0% 0.72% +0.55
XIFR XPLR Infrastructure LP Add +850.0% 0.66% +0.55
P Everpure Inc. Class A New 0.54% +0.54
MELI MercadoLibre Inc. New 0.53% +0.53
MP MP Materials Corp. Add +318.2% 0.69% +0.51
RSP Invesco S&P 500 Equal Weight New 0.51% +0.51
ARM Arm Holdings PLC-ADR New 0.48% +0.48
AMZN Amazon.com Inc. Add +5.0% 2.23% +0.47
ENPH Enphase Energy Inc. New 0.47% +0.47
XYZ Block Inc. New 0.43% +0.43
NET Cloudflare Inc. Class A New 0.41% +0.41
CIEN Ciena Corp. New 0.41% +0.41
CYBR Cyberark Software Ltd./Israel New 0.39% +0.39
AGI Alamos Gold Inc. Class A Add +31.3% 1.87% +0.37
GLW Corning Inc. Add +18.8% 1.66% +0.36
ZS Zscaler Inc. New 0.36% +0.36
MU Micron Technology Inc. Add +188.1% 0.57% +0.33
T AT&T Inc. New 0.33% +0.33
ETN Eaton Corp. PLC New 0.32% +0.32
TOST Toast Inc. Class A New 0.25% +0.25
EBAY eBay Inc. Add +341.7% 0.32% +0.24
VIAV Viavi Solutions Inc. New 0.24% +0.24
ORA Ormat Technologies Inc. New 0.20% +0.20
WDC Western Digital Corp. New 0.20% +0.20
BE Bloom Energy Corp. Class A Add +6.7% 0.34% +0.19
DNN Denison Mines Corp. Add +100.0% 0.35% +0.18

Options Activity Q3 2024 → Q4 2024

SMCI Super Micro Computer Inc. call Sold out 40,000 $16.7Mbefore exit
ANET Arista Networks Inc. put New 108,000 $11.9M
KWEB Kranesh Csi China Internet call Sold out 350,000 $11.9Mbefore exit
RSP Invesco S&P 500 Equal Weight call New 60,000 $10.5M
SMTC Semtech Corp. put New 125,000 $7.7M
CRM Salesforce Inc. call Reduce -20.0% 20,000 $6.7M
NVDA Nvidia Corp. put New 47,000 $6.3M
INTC Intel Corp. call New 305,000 $6.1M
FXI iShares China Large-Cap ETF call New 200,000 $6.1M
GOOG Alphabet Inc. Class C call Add +57.9% 30,000 $5.7M
FTNT Fortinet Inc. put New 55,000 $5.2M
SNOW Snowflake Inc. call New 25,000 $3.9M
WULF Terawulf Inc. call Reduce -18.8% 650,000 $3.7M
MU Micron Technology Inc. call New 40,000 $3.4M
ALDX Aldeyra Therapeutics Inc. call New 600,000 $3.0M
RUN Sunrun Inc. call Reduce -45.0% 300,000 $2.8M
CRDO Credo Technology Group Holdi put New 38,000 $2.6M
FLR Fluor Corp. call New 50,000 $2.5M
ASPN Aspen Aerogels Inc. call Reduce -50.0% 200,000 $2.4M
AMBA Ambarella Inc. call New 30,000 $2.2M
GRMN Garmin Ltd. put Sold out 12,000 $2.1Mbefore exit
ON On Semiconductor call Sold out 26,000 $1.9Mbefore exit
PANW Palo Alto Networks Inc. put New 10,000 $1.8M
XIFR XPLR Infrastructure LP call New 100,000 $1.8M
TAN Invesco Solar ETF call New 50,000 $1.7M
UNG US Natural Gas Fund LP call Sold out 100,000 $1.6Mbefore exit
DT Dynatrace Inc. call New 30,000 $1.6M
GL Globe Life Inc. put New 14,000 $1.6M
CLNE Clean Energy Fuels Corp. call New 500,000 $1.3M
INDV Indivior Ltd. call Sold out 119,500 $1.2Mbefore exit
GSM Ferroglobe PLC call Sold out 250,500 $1.2Mbefore exit
MRVL Marvell Technology Inc. call New 10,000 $1.1M
TREE Lendingtree Inc. put New 27,000 $1.0M
AKAM Akamai Technologies Inc. call Sold out 10,000 $1.0Mbefore exit
OKTA Okta Inc. call New 12,000 $946K
LITE Lumentum Holdings Inc. call New 10,000 $840K
ONTO Onto Innovation Inc. call New 5,000 $833K
INFN Infinera Corp. call Sold out 119,000 $803Kbefore exit
SMCI Super Micro Computer Inc. put New 25,000 $762K
PCOR Procore Technologies Inc. call New 10,000 $749K
S Sentinelone Inc. Class A call Reduce -71.4% 30,000 $666K
TER Teradyne Inc. call New 5,000 $630K
WDC Western Digital Corp. call New 10,000 $596K
HRB H&R Block Inc. call Sold out 9,000 $572Kbefore exit
EXTR Extreme Networks Inc. put New 30,000 $502K
CAMT Camtek Ltd. call Sold out 6,000 $479Kbefore exit
LRCX Lam Research Corp. put Sold out 50,000 $408Kbefore exit
COMP Compass Inc. Class A call New 65,000 $380K
NCNO Ncino Inc. call New 10,000 $336K
LYFT LYFT Inc. Class A call New 25,000 $323K

Showing the first 50 of 53.

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