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Portfolio (Quarterly) Guide ↗

ARDSLEY ADVISORY PARTNERS LP

· CIK 0000900529
13F Portfolio $784.4B AUM 151 positions Filed May 15, 2026 EDGAR ↗ ← All Funds
Q1 2026 Q4 2025 · All 72 New 33 Added 34 Reduced 63 Exited
Page 6 of 8  ·  151 positions
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
101 AMD ADVANCED MICRO DEVICES INC Technology 8,000.0 $1.6M 0.21% NEW $203.43 +108.5%
102 AEIS ADVANCED ENERGY INDS Industrials 5,000.0 $1.6M 0.21% -68K -93.2% $322.71 +0.2%
103 MTZ MASTEC INC Industrials 5,000.0 $1.6M 0.20% -10K -66.7% $321.74 +35.1%
104 ALDX ALDEYRA THERAPEUTICS INC Healthcare 950,000.0 $1.6M 0.20% -500K -34.5% $1.69 -0.6%
105 EQT EQT CORP Energy 25,000.0 $1.6M 0.20% $63.64 -11.1%
106 EOSE EOS ENERGY ENTERPRISES INC Industrials 300,000.0 $1.5M 0.19% -255K -46.0% $4.96 +64.7%
107 DT DYNATRACE INC Technology 40,000.0 $1.5M 0.19% NEW $36.98 +0.4%
108 ET ENERGY TRANSFER L P Energy 75,000.0 $1.4M 0.18% +50K +200.0% $19.21 +6.0%
109 STKL SUNOPTA INC Consumer Defensive 220,000.0 $1.4M 0.18% -470K -68.1% $6.48 +0.3%
110 CEG CONSTELLATION ENERGY CORP Utilities 5,000.0 $1.4M 0.18% NEW $278.58 -4.1%
111 ITRI ITRON INC Technology 15,000.0 $1.3M 0.17% +1K +7.1% $89.63 -9.0%
112 ESOA ENERGY SERVICES OF AMER CORP Industrials 100,000.0 $1.3M 0.17% +50K +100.0% $13.13 +32.7%
113 MOS CALL MOSAIC CO Basic Materials 50,000.0 $1.3M 0.16% NEW $25.50 -11.1%
114 NOW CALL SERVICENOW INC Technology 12,000.0 $1.3M 0.16% -14K -54.7% $104.55 -13.4%
115 SUNPOWER INC 960,000.0 $1.2M 0.15% +440K +84.6% $1.27
116 PI IMPINJ INC Technology 11,500.0 $1.2M 0.15% +5K +76.9% $102.70 +40.8%
117 TXN TEXAS INSTRS INC Technology 6,000.0 $1.2M 0.15% -54K -90.0% $194.14 +57.8%
118 TASK CALL TASKUS INC Technology 170,000.0 $1.1M 0.14% NEW $6.71 -17.7%
119 XLF SELECT SECTOR SPDR TR 23,000.0 $1.1M 0.14% NEW $49.39 +3.5%
120 CNXC PUT CONCENTRIX CORP Technology 40,000.0 $1.1M 0.14% NEW $27.36 -14.4%
Page 6 of 8  ·  151 positions

Period Price is the implied market price on the last day of the reporting period, calculated as reported value ÷ shares held. It is not the fund's purchase price or cost basis — the fund may have initiated or added to the position at any point during the quarter at a different price. Since Period shows the price change from that quarter-end snapshot to today's last price — it reflects stock movement after the report date, not the fund's actual return.

Sector Allocation
Technology 31.4%
Healthcare 17.9%
Consumer Cyclical 9.3%
Communication Services 8.8%
Energy 8.8%
Financial Services 8.8%
Industrials 8.5%
Utilities 2.8%
Basic Materials 1.6%
Real Estate 1.3%