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Ardsley Advisory Partners Portfolio holdings

AUM $960M
1-Year Est. Return 207.76%
This Fund
S&P 500
This Quarter Est. Return
+11.5%
1 Year Est. Return
+207.76%
3 Year Est. Return
+554.53%
5 Year Est. Return
+728.66%
10 Year Est. Return
+4,084.52%
AUM
$784M
AUM Growth
-$127M
Cap. Flow
-$154M
Cap. Flow %
-19.68%
Top 10 Hldgs %
29.92%
Holding
214
New
72
Increased
33
Reduced
34
Closed
63

Top Buys

Rank Stock Value
1
UTHR icon
United Therapeutics
UTHR
+$24.9M
2
SHLS icon
Shoals Technologies Group
SHLS
+$18.3M
3
META icon
Meta Platforms (Facebook)
META
+$16.7M
4
MOD icon
Modine Manufacturing
MOD
+$16.5M
5
BSX icon
Boston Scientific
BSX
+$12M

Top Sells

Rank Stock Value
1
LITE icon
Lumentum
LITE
+$40.5M
2
LLY icon
Eli Lilly
LLY
+$35.5M
3
FSLR icon
First Solar
FSLR
+$30.7M
4
ARGX icon
argenx
ARGX
+$20.2M
5
AEIS icon
Advanced Energy
AEIS
+$19.7M

Sector Composition

Rank Sector Weight
1 Technology 33.08%
2 Healthcare 13.31%
3 Consumer Discretionary 7.84%
4 Financials 6.74%
5 Communication Services 6.07%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ARM icon
76
Arm
ARM
$240B
$2.72M 0.35%
+18,000
New +$2.18M
FLNC icon
77
Fluence Energy
FLNC
$1.58B
$2.55M 0.32%
+185,000
New +$3.71M
METC icon
78
Ramaco Resources Class A
METC
$629M
$2.47M 0.32%
160,000
+130,000
+433% +$2.3M
TIC
79
TIC Solutions Inc
TIC
$1.59B
$2.47M 0.31%
375,000
+225,000
+150% +$2.12M
CCJ icon
80
Cameco
CCJ
$36.8B
$2.44M 0.31%
22,500
-12,500
-36% -$1.43M
COHR icon
81
PUT
Coherent
COHR
$43.4B
$2.38M 0.3%
10,000
+3,000
+43% +$687K
BOX icon
82
CALL
Box
BOX
$4.49B
$2.36M 0.3%
+100,000
New +$2.52M
INTC icon
83
Intel
INTC
$413B
$2.34M 0.3%
53,000
+2,000
+4% +$91.7K
SMTC icon
84
CALL
Semtech
SMTC
$9.65B
$2.31M 0.29%
30,000
+8,000
+36% +$658K
WOLF icon
85
Wolfspeed
WOLF
$1.04B
$2.29M 0.29%
140,000
-25,000
-15% -$451K
NET icon
86
Cloudflare
NET
$96B
$2.23M 0.28%
+10,800
New +$2.06M
TER icon
87
Teradyne
TER
$50B
$2.22M 0.28%
7,500
-52,500
-88% -$14.6M
ORN icon
88
Orion Group Holdings
ORN
$368M
$2.18M 0.28%
200,000
-200,000
-50% -$2.39M
RSP icon
89
Invesco S&P 500 Equal Weight ETF
RSP
$97.3B
$2.11M 0.27%
+11,000
New +$2.18M
AMPX icon
90
Amprius Technologies
AMPX
$1.2B
$2.11M 0.27%
+125,000
New +$1.63M
FTNT icon
91
Fortinet
FTNT
$112B
$2.09M 0.27%
+25,600
New +$2.07M
UPWK icon
92
Upwork
UPWK
$1.18B
$2.08M 0.27%
+190,000
New +$2.99M
FFIV icon
93
F5
FFIV
$22B
$2.05M 0.26%
+7,100
New +$1.97M
FTNT icon
94
CALL
Fortinet
FTNT
$112B
$2.04M 0.26%
+25,000
New +$2.02M
HASI icon
95
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$4.81B
$2.02M 0.26%
55,000
– –
DIOD icon
96
Diodes
DIOD
$3.5B
$2.01M 0.26%
+29,500
New +$1.86M
ZM icon
97
CALL
Zoom
ZM
$27.1B
$1.85M 0.24%
+23,000
New +$1.93M
UBER icon
98
Uber
UBER
$145B
$1.76M 0.22%
+24,500
New +$1.89M
BE icon
99
Bloom Energy
BE
$46.6B
$1.75M 0.22%
13,000
-38,000
-75% -$5.58M
NVDA icon
100
CALL
NVIDIA
NVDA
$4.6T
$1.74M 0.22%
+10,000
New +$1.83M
2 3
4
5 6

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Ardsley Advisory Partners's Q1 2026 Portfolio in Review

As of Q1 2026, Ardsley Advisory Partners held 214 positions worth $784M, down 14% from $911M the previous quarter. Its ten largest holdings account for 30% of the portfolio.

Ardsley Advisory Partners withdrew a net $154M in Q1 2026, closing 63 positions and reducing 34 holdings. Its most notable exit was First Solar, an estimated $30.7M position sold in full.

By sector, the portfolio is most concentrated in Technology at 33% of assets, down from 37% a quarter earlier, followed by Healthcare and Consumer Discretionary.

Against the trend, Ardsley Advisory Partners opened a new position in United Therapeutics worth $29.6M.

  • Ardsley Advisory Partners's largest Q1 2026 buy was United Therapeutics: 50,000 shares worth $29.6M.
  • Ardsley Advisory Partners added most to Shoals Technologies Group in Q1 2026, an estimated $18.3M increase.
  • Ardsley Advisory Partners's biggest Q1 2026 reduction was Lumentum, cutting an estimated $40.5M.
  • Ardsley Advisory Partners fully exited First Solar in Q1 2026, selling an estimated $30.7M.
  • Ardsley Advisory Partners's ten largest holdings make up 30% of its $784M portfolio in Q1 2026.
  • Ardsley Advisory Partners opened 72 new positions and closed 63 in Q1 2026.
  • Ardsley Advisory Partners's portfolio value fell 14% quarter-over-quarter to $784M.

Based on Ardsley Advisory Partners's 13F filing for Q1 2026, filed 15 May 2026.