ARDSLEY ADVISORY PARTNERS LP

CIK 0000900529 · Q1 2026

13F Equity AUM

$784.4M

-13.9% QoQ

Positions

127

+3 QoQ

AUM Rank

#3,282

Top 26%

Skill Alpha (FF)

+1.9%/yr^ns

No Clear Edge

Rank #1,201 · Top 15%

vs S&P +0.4%/yr (unadj.)

Quarters Tracked

~13 years

Portfolio Concentration

Top 5: 21.9%Top 10: 34.9%Top 20: 53.3%

AVGO5.5%

SNDK4.5%

AMZN4.1%

SPY4.1%

UTH3.8%

ANET3.1%

SMTC2.8%

MOD2.5%

SEZL2.4%

NVDA2.2%

Others (117)65.1%

HHI (Herfindahl-Hirschman Index) measures portfolio concentration. Low (<1500) = diversified, Moderate (1500-2500), High (>2500) = concentrated bets.

Sector Allocation

Technology35.8%

Financial Services14.3%

Healthcare14.1%

Communication Services6.8%

Consumer Cyclical6.6%

Energy6.4%

Industrials6.3%

Utilities2.7%

Other6.9%

Portfolio weight by GICS sector based on latest 13F filing. Sectors below 2% are grouped as “Other.”

Position Sizing

Positions: 127Median: 0.44%Avg: 0.79%

0–0.5%

72(17.1%)

0.5–1%

25(18.1%)

1–3%

24(39.8%)

3–5%

5(19.5%)

5%+

1(5.5%)

Count of positions per weight bucket — (%) = combined portfolio weight

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Portfolio Overlap

Shared: 125Unique: 2vs 20 funds

1.7%Low

127

Fund positions

7,299

Consensus CUSIPs

Jaccard similarity of this fund’s portfolio vs the consensus of top 20 funds by AUM. Low (<15%) = contrarian, Moderate (15-40%), High (>40%) = follows the crowd.

Most Similar Funds

Top 9 benchmark funds with highest portfolio overlap (Jaccard similarity)

MORGAN STANLEY

2.3%

BANK OF AMERICA CORP /DE/

2.6%

BlackRock, Inc.

GEODE CAPITAL MANAGEMENT, LLC

3.4%

JPMORGAN CHASE & CO

2.4%

VANGUARD CAPITAL MANAGEMENT LLC

3.4%

STATE STREET CORP

3.3%

FMR LLC

3.6%

VANGUARD PORTFOLIO MANAGEMENT LLC

3.6%

Jaccard similarity per fund: shared CUSIPs / (fund A + fund B − shared). Higher values indicate more similar portfolios.

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Position Changes This Quarter

New53Increased32Decreased32Exited50

New Positions

SPY4.1%

+49K

UTH3.8%

+50K

EQIX1.5%

+12K

AMLP1.3%

+200K

MU1.3%

+31K

BSX1.2%

+150K

AMAT1.1%

+25K

ZM1.1%

+106K

BOX1.0%

+336K

AAPL1.0%

+30K

Increased

SHLS1.9%

+2.2M(+8940%)

SPWR0.2%

+440K(+85%)

B7S1.6%

+250K(+36%)

T0V0.3%

+225K(+150%)

METC0.3%

+130K(+433%)

PRN0.5%

+125K(+28%)

AMZN4.1%

+100K(+185%)

TAC0.5%

+95K(+53%)

MOD2.5%

+88K(+2431%)

ARRY0.1%

+75K(+300%)

Decreased

DML0.6%

-2,700,000(-66%)

NXE0.4%

-825,000(-73%)

SOY0.2%

-470,000(-68%)

SNAP0.0%

-380,000(-88%)

RUN2.0%

-345,000(-23%)

EOSE0.2%

-255,000(-46%)

ALDX0.3%

-250,000(-17%)

HUT0.9%

-210,000(-58%)

ORN0.3%

-200,000(-50%)

DQ0.1%

-185,000(-79%)

Exited

-127,500

-24,000

-295,000

-73,500

-78,000

-51,000

-69,000

-78,400

-81,000

-2,120,000

Quarter-over-quarter changes compared to prior 13F filing. New = first appearance; Exited = no longer held.

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Holdings

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