Ardsley Advisory Partners LP
Norwalk, CT
$921m in 130 US stocks at the end of 30 June 2026. The top 10 are 31.6% of the money. It changed about 47.3% of the portfolio this quarter.
Value
$921m
Stocks
130
Top 10 share
31.6%
Turnover
47.3%
What changed this quarter
New
Bought for the first time this quarter.
- EverpureP2.0% of the fund
- Palo Alto NetworksPANW1.6% of the fund
- Primoris ServicesPRIM1.5% of the fund
- AppleAAPL1.4% of the fund
- Onto InnovationONTO1.3% of the fund
- TD SynnexSNX1.3% of the fund
- Allegiant TravelALGT1.1% of the fund
- Oscar HealthOSCR1.1% of the fund
- Cerebras SystemsCBRS0.9% of the fund
- Remitly GlobalRELY0.9% of the fund
- Devon EnergyDVN0.9% of the fund
- CorningGLW0.8% of the fund
- Vertex PharmaceuticalsVRTX0.8% of the fund
- Jazz PharmaceuticalsJAZZ0.8% of the fund
- FerroglobeGSM0.8% of the fund
- Akamai TechnologiesAKAM0.7% of the fund
- Microchip TechnologyMCHP0.7% of the fund
- SLB LimitedSLB0.7% of the fund
- CamtekCAMT0.7% of the fund
- SalesforceCRM0.6% of the fund
- Guardian Metal ResourcesGMTL0.6% of the fund
- Applied OptoelectronicsAAOI0.6% of the fund
- BorgwarnerBWA0.5% of the fund
- NavanNAVN0.5% of the fund
- GlobalfoundriesGFS0.5% of the fund
Added
Bought more of a stock they already held.
- Advanced Micro DevicesAMD5.9% of the fund+1063%
- eBayEBAY2.4% of the fund+43%
- SunrunRUN2.3% of the fund+41%
- ARM HoldingsARM1.8% of the fund+161%
- AlphabetGOOG1.7% of the fund+45%
- TwilioTWLO1.5% of the fund+46%
- Zoom CommunicationsZM1.4% of the fund+75%
- Enphase EnergyENPH1.2% of the fund+159%
- OktaOKTA1.1% of the fund+13%
- EquinixEQIX1.1% of the fund+26%
- Bloom EnergyBE1.0% of the fund+138%
- Lumentum HoldingsLITE0.9% of the fund+61%
- FluorFLR0.8% of the fund+73%
- Verizon CommunicationsVZ0.7% of the fund+19%
- Xplr Infrastructure LPXIFR0.7% of the fund+11%
- Adma BiologicsADMA0.5% of the fund+41%
- TransaltaTAC0.5% of the fund+25%
- ImpinjPI0.5% of the fund+187%
- Fuelcell EnergyFCEL0.5% of the fund+167%
- Texas InstrumentsTXN0.4% of the fund+117%
- TIC SolutionsTIC0.4% of the fund+7%
- Eos Energy EnterprisesEOSE0.4% of the fund+83%
- Energy Transfer L PET0.3% of the fund+67%
- Aldeyra TherapeuticsALDX0.2% of the fund+3%
- SentinelOneS0.2% of the fund+157%
Cut
Sold some of their stake.
- SandiskSNDK6.2% of the fund-40%
- SezzleSEZL4.0% of the fund-28%
- TerawulfWULF2.6% of the fund-8%
- BrightSpring Health ServicesBTSG2.5% of the fund-7%
- Viavi SolutionsVIAV2.0% of the fund-3%
- Shoals Technologies GroupSHLS1.8% of the fund-26%
- Amazon.comAMZN1.8% of the fund-35%
- United TherapeuticsUTHR1.8% of the fund-40%
- Teva Pharmaceutical IndustriesTEVA1.7% of the fund-16%
- Modine ManufacturingMOD1.3% of the fund-51%
- Hut 8HUT1.1% of the fund-40%
- Cipher DigitalCIFR1.0% of the fund-17%
- BroadcomAVGO0.9% of the fund-77%
- Alaska Air GroupALK0.9% of the fund-9%
- SemtechSMTC0.8% of the fund-83%
- GeneDx HoldingsWGS0.6% of the fund-25%
- CVS HealthCVS0.4% of the fund-53%
- BWX TechnologiesBWXT0.4% of the fund-20%
- Skeena ResourcesSKE0.4% of the fund-17%
- Alamos GoldAGI0.3% of the fund-40%
- WolfspeedWOLF0.3% of the fund-57%
- ServiceNowNOW0.2% of the fund-70%
- Avery DennisonAVY0.2% of the fund-70%
- CamecoCCJ0.2% of the fund-22%
- Ramaco ResourcesMETC0.1% of the fund-38%
Sold out
Sold their entire stake.
- Arista NetworksANET-100%
- Meta PlatformsMETA-100%
- NvidiaNVDA-100%
- Boston ScientificBSX-100%
- Applied MaterialsAMAT-100%
- Lattice SemiconductorLSCC-100%
- Select Sector Spdr TRXLU-100%
- Analog DevicesADI-100%
- Micron TechnologyMU-100%
- Eli LillyLLY-100%
- AnterixATEX-100%
- RokuROKU-100%
- NetflixNFLX-100%
- Honeywell InternationalHON-100%
- NexGen EnergyNXE-100%
- Brookdale Senior LivingBKD-100%
- Ormat TechnologiesORA-100%
- MicrosoftMSFT-100%
- Bellring BrandsBRBR-100%
- IntelINTC-100%
- CloudflareNET-100%
- TeradyneTER-100%
- Invesco Exchange Traded FD TRSP-100%
- Amprius TechnologiesAMPX-100%
- FortinetFTNT-100%
Holdings
- ARM HoldingsARM
- Share
- 1.8%
- Value
- $17m
- Shares
- 47,000
+161%
- Alps ETF TRAMLP
- Share
- 1.1%
- Value
- $10m
- Shares
- 200,000
Held
- Cerebras SystemsCBRS
- Share
- 0.9%
- Value
- $9m
- Shares
- 39,000
New
- Xplr Infrastructure LPXIFR
- Share
- 0.7%
- Value
- $6m
- Shares
- 525,000
+11%
- TransaltaTAC
- Share
- 0.5%
- Value
- $5m
- Shares
- 345,000
+25%
- Skeena ResourcesSKE
- Share
- 0.4%
- Value
- $4m
- Shares
- 145,000
-17%
- Alamos GoldAGI
- Share
- 0.3%
- Value
- $3m
- Shares
- 105,000
-40%
- Energy Transfer L PET
- Share
- 0.3%
- Value
- $2m
- Shares
- 125,000
+67%
- HA Sustainable Infrastructure CapitalHASI
- Share
- 0.2%
- Value
- $2m
- Shares
- 55,000
Held
| Company | Share of fund | Value | Shares | Change |
|---|---|---|---|---|
| SandiskSNDK | 6.2% | $57m | 25,000 | -40% |
| Advanced Micro DevicesAMD | 5.9% | $54m | 93,000 | +1063% |
| SezzleSEZL | 4.0% | $37m | 215,000 | -28% |
| TerawulfWULF | 2.6% | $24m | 966,000 | -8% |
| BrightSpring Health ServicesBTSG | 2.5% | $23m | 325,000 | -7% |
| eBayEBAY | 2.4% | $22m | 201,000 | +43% |
| SunrunRUN | 2.3% | $21m | 1,600,000 | +41% |
| Viavi SolutionsVIAV | 2.0% | $19m | 390,000 | -3% |
| EverpureP | 2.0% | $18m | 233,000 | New |
| ARM HoldingsARM | 1.8% | $17m | 47,000 | +161% |
| Shoals Technologies GroupSHLS | 1.8% | $16m | 1,665,000 | -26% |
| Amazon.comAMZN | 1.8% | $16m | 69,000 | -35% |
| United TherapeuticsUTHR | 1.8% | $16m | 30,000 | -40% |
| Teva Pharmaceutical IndustriesTEVA | 1.7% | $16m | 465,000 | -16% |
| AlphabetGOOG | 1.7% | $15m | 43,500 | +45% |
| Palo Alto NetworksPANW | 1.6% | $15m | 43,000 | New |
| TwilioTWLO | 1.5% | $14m | 69,000 | +46% |
| Primoris ServicesPRIM | 1.5% | $13m | 135,000 | New |
| AppleAAPL | 1.4% | $13m | 45,000 | New |
| Zoom CommunicationsZM | 1.4% | $13m | 145,000 | +75% |
| Modine ManufacturingMOD | 1.3% | $12m | 45,000 | -51% |
| Onto InnovationONTO | 1.3% | $12m | 31,500 | New |
| TD SynnexSNX | 1.3% | $12m | 43,500 | New |
| Enphase EnergyENPH | 1.2% | $11m | 220,000 | +159% |
| Allegiant TravelALGT | 1.1% | $11m | 90,000 | New |
| OktaOKTA | 1.1% | $10m | 76,500 | +13% |
| EquinixEQIX | 1.1% | $10m | 10,000 | +26% |
| Hut 8HUT | 1.1% | $10m | 90,000 | -40% |
| Alps ETF TRAMLP | 1.1% | $10m | 200,000 | Held |
| Oscar HealthOSCR | 1.1% | $10m | 350,000 | New |
| Bloom EnergyBE | 1.0% | $9m | 31,000 | +138% |
| Cipher DigitalCIFR | 1.0% | $9m | 375,000 | -17% |
| Nu HoldingsNU | 1.0% | $9m | 675,000 | Held |
| Cerebras SystemsCBRS | 0.9% | $9m | 39,000 | New |
| Lumentum HoldingsLITE | 0.9% | $9m | 10,000 | +61% |
| Remitly GlobalRELY | 0.9% | $8m | 375,000 | New |
| Devon EnergyDVN | 0.9% | $8m | 200,000 | New |
| BroadcomAVGO | 0.9% | $8m | 21,000 | -77% |
| Alaska Air GroupALK | 0.9% | $8m | 150,000 | -9% |
| CorningGLW | 0.8% | $8m | 30,000 | New |
| FluorFLR | 0.8% | $7m | 142,500 | +73% |
| Vertex PharmaceuticalsVRTX | 0.8% | $7m | 15,000 | New |
| VeracyteVCYT | 0.8% | $7m | 125,000 | Held |
| SemtechSMTC | 0.8% | $7m | 45,000 | -83% |
| Jazz PharmaceuticalsJAZZ | 0.8% | $7m | 30,000 | New |
| FerroglobeGSM | 0.8% | $7m | 2,185,000 | New |
| Akamai TechnologiesAKAM | 0.7% | $7m | 56,000 | New |
| Verizon CommunicationsVZ | 0.7% | $7m | 155,000 | +19% |
| BOXBOX | 0.7% | $6m | 240,000 | Held |
| Microchip TechnologyMCHP | 0.7% | $6m | 70,000 | New |
| SLB LimitedSLB | 0.7% | $6m | 135,000 | New |
| Xplr Infrastructure LPXIFR | 0.7% | $6m | 525,000 | +11% |
| CamtekCAMT | 0.7% | $6m | 37,000 | New |
| Mirion TechnologiesMIR | 0.6% | $6m | 325,000 | Held |
| SalesforceCRM | 0.6% | $6m | 36,000 | New |
| Guardian Metal ResourcesGMTL | 0.6% | $6m | 400,000 | New |
| GeneDx HoldingsWGS | 0.6% | $5m | 75,000 | -25% |
| Applied OptoelectronicsAAOI | 0.6% | $5m | 35,000 | New |
| Adma BiologicsADMA | 0.5% | $5m | 600,000 | +41% |
| Clearway EnergyCWEN | 0.5% | $5m | 140,000 | Held |
| TransaltaTAC | 0.5% | $5m | 345,000 | +25% |
| ImpinjPI | 0.5% | $5m | 33,000 | +187% |
| BorgwarnerBWA | 0.5% | $5m | 70,000 | New |
| NavanNAVN | 0.5% | $5m | 200,000 | New |
| GlobalfoundriesGFS | 0.5% | $4m | 54,500 | New |
| FlowserveFLS | 0.5% | $4m | 60,000 | New |
| Fuelcell EnergyFCEL | 0.5% | $4m | 120,000 | +167% |
| Lam ResearchLRCX | 0.5% | $4m | 10,000 | New |
| CVS HealthCVS | 0.4% | $4m | 40,000 | -53% |
| Manhattan AssociatesMANH | 0.4% | $4m | 28,500 | New |
| Global-E OnlineGLBE | 0.4% | $4m | 113,000 | New |
| BWX TechnologiesBWXT | 0.4% | $4m | 20,000 | -20% |
| AmphenolAPH | 0.4% | $4m | 22,000 | New |
| Texas InstrumentsTXN | 0.4% | $4m | 13,000 | +117% |
| Skeena ResourcesSKE | 0.4% | $4m | 145,000 | -17% |
| Profound MedicalPROF | 0.4% | $4m | 575,000 | Held |
| Williams CompaniesWMB | 0.4% | $4m | 50,000 | Held |
| ShopifySHOP | 0.4% | $4m | 32,500 | New |
| Western DigitalWDC | 0.4% | $4m | 5,500 | New |
| Aeva TechnologiesAEVA | 0.4% | $3m | 121,500 | New |
| Orion Group HoldingsORN | 0.4% | $3m | 200,000 | Held |
| TIC SolutionsTIC | 0.4% | $3m | 400,000 | +7% |
| Eos Energy EnterprisesEOSE | 0.4% | $3m | 550,000 | +83% |
| Alamos GoldAGI | 0.3% | $3m | 105,000 | -40% |
| CohuCOHU | 0.3% | $3m | 41,700 | New |
| FlexFLEX | 0.3% | $3m | 19,000 | New |
| Fortrea HoldingsFTRE | 0.3% | $3m | 175,000 | New |
| STMicroelectronicsSTM | 0.3% | $3m | 41,000 | New |
| WolfspeedWOLF | 0.3% | $3m | 60,000 | -57% |
| Veeco InstrumentsVECO | 0.3% | $3m | 37,000 | New |
| KBRKBR | 0.3% | $3m | 75,000 | New |
| Energy Transfer L PET | 0.3% | $2m | 125,000 | +67% |
| Pagaya TechnologiesPGY | 0.2% | $2m | 125,000 | New |
| TripAdvisorTRIP | 0.2% | $2m | 166,000 | New |
| HA Sustainable Infrastructure CapitalHASI | 0.2% | $2m | 55,000 | Held |
| ServiceNowNOW | 0.2% | $2m | 21,500 | -70% |
| Aldeyra TherapeuticsALDX | 0.2% | $2m | 975,000 | +3% |
| SentinelOneS | 0.2% | $2m | 118,000 | +157% |
| Avery DennisonAVY | 0.2% | $2m | 12,000 | -70% |
| Baker HughesBKR | 0.2% | $2m | 35,000 | New |
Showing the largest 100 of 130.
Options (15)
- Brookdale Senior LivingBKD
- Type
- Call
- Value
- $11m
- Contracts
- 690,000
- OracleORCL
- Type
- Call
- Value
- $7m
- Contracts
- 45,000
- Fuelcell EnergyFCEL
- Type
- Call
- Value
- $5m
- Contracts
- 125,000
- ServiceNowNOW
- Type
- Call
- Value
- $3m
- Contracts
- 30,000
- AtlassianTEAM
- Type
- Call
- Value
- $3m
- Contracts
- 35,000
- EverpureP
- Type
- Call
- Value
- $2m
- Contracts
- 30,000
- Cognizant Technology SolutionsCTSH
- Type
- Put
- Value
- $2m
- Contracts
- 50,000
- Costar GroupCSGP
- Type
- Put
- Value
- $1m
- Contracts
- 50,000
- Aeva TechnologiesAEVA
- Type
- Call
- Value
- $1m
- Contracts
- 45,000
- Zoom CommunicationsZM
- Type
- Call
- Value
- $1m
- Contracts
- 13,000
- Himax TechnologiesHIMX
- Type
- Call
- Value
- $1m
- Contracts
- 70,000
- Korn FerryKFY
- Type
- Put
- Value
- $665,800
- Contracts
- 10,000
- Aldeyra TherapeuticsALDX
- Type
- Call
- Value
- $639,000
- Contracts
- 300,000
- AXTAXTI
- Type
- Call
- Value
- $576,640
- Contracts
- 8,000
- Viant TechnologyDSP
- Type
- Call
- Value
- $158,250
- Contracts
- 12,500
| Company | Type | Value | Contracts |
|---|---|---|---|
| Brookdale Senior LivingBKD | Call | $11m | 690,000 |
| OracleORCL | Call | $7m | 45,000 |
| Fuelcell EnergyFCEL | Call | $5m | 125,000 |
| ServiceNowNOW | Call | $3m | 30,000 |
| AtlassianTEAM | Call | $3m | 35,000 |
| EverpureP | Call | $2m | 30,000 |
| Cognizant Technology SolutionsCTSH | Put | $2m | 50,000 |
| Costar GroupCSGP | Put | $1m | 50,000 |
| Aeva TechnologiesAEVA | Call | $1m | 45,000 |
| Zoom CommunicationsZM | Call | $1m | 13,000 |
| Himax TechnologiesHIMX | Call | $1m | 70,000 |
| Korn FerryKFY | Put | $665,800 | 10,000 |
| Aldeyra TherapeuticsALDX | Call | $639,000 | 300,000 |
| AXTAXTI | Call | $576,640 | 8,000 |
| Viant TechnologyDSP | Call | $158,250 | 12,500 |
Over time and by industry
Value over time
Jun '25
Dec '25
Jun '26
Value is up 50.5% since 30 June 2025.
Where the money is
Technology51.4%
Industrials11.6%
Health care10.9%
Financial services7.2%
Retail & consumer6.4%
Materials3.1%
Media & telecom2.4%
Energy2.3%
Utilities1.2%
Real estate1.1%
Other2.3%
From the fund's 13F filings. They list US stocks and options only, 45 days after each quarter, and leave out cash, bonds, shorts and foreign shares.