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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
(-14%)
Cap. Flow
-$154M
Cap. Flow
% of AUM
-19.68%
Top 10 Holdings %
Top 10 Hldgs %
29.92%
Holding
214
New
72
Increased
33
Reduced
34
Closed
63
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
United Therapeutics
UTHR
|
+$24.9M |
| 2 |
Shoals Technologies Group
SHLS
|
+$18.3M |
| 3 |
Meta Platforms (Facebook)
META
|
+$16.7M |
| 4 |
Modine Manufacturing
MOD
|
+$16.5M |
| 5 |
Boston Scientific
BSX
|
+$12M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Lumentum
LITE
|
+$40.5M |
| 2 |
Eli Lilly
LLY
|
+$35.5M |
| 3 |
First Solar
FSLR
|
+$30.7M |
| 4 |
argenx
ARGX
|
+$20.2M |
| 5 |
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 | |
|---|---|---|---|---|---|---|
101
Advanced Micro Devices
AMD
$700B
| $1.63M | 0.21% |
+8,000
| New | +$1.71M |
|
|
102
Advanced Energy
AEIS
$10.1B
| $1.61M | 0.21% |
5,000
-68,000
| -93% | -$19.7M |
|
103
MasTec
MTZ
$22.7B
| $1.61M | 0.21% |
5,000
-10,000
| -67% | -$2.71M |
|
104
Aldeyra Therapeutics
ALDX
$97.1M
| $1.61M | 0.2% |
950,000
-500,000
| -34% | -$2.19M |
|
105
EQT Corp
EQT
$32.9B
| $1.59M | 0.2% |
25,000
| – | – |
|
106
Eos Energy Enterprises
EOSE
$1.14B
| $1.49M | 0.19% |
300,000
-255,000
| -46% | -$2.74M |
|
107
Dynatrace
DT
$12.7B
| $1.48M | 0.19% |
+40,000
| New | +$1.53M |
|
108
Energy Transfer Partners
ET
$69.5B
| $1.44M | 0.18% |
75,000
+50,000
| +200% | +$916K |
|
|
STKL
109
DELISTED
SunOpta
STKL
| $1.43M | 0.18% |
220,000
-470,000
| -68% | -$2.66M |
|
110
Constellation Energy
CEG
$92.1B
| $1.39M | 0.18% |
+5,000
| New | +$1.52M |
|
111
Itron
ITRI
$4.54B
| $1.34M | 0.17% |
15,000
+1,000
| +7% | +$96K |
|
112
Energy Services of America
ESOA
$262M
| $1.31M | 0.17% |
100,000
+50,000
| +100% | +$588K |
|
113
CALL
The Mosaic Company
MOS
$7.19B
| $1.27M | 0.16% |
+50,000
| New | +$1.37M |
|
114
CALL
ServiceNow
NOW
$120B
| $1.25M | 0.16% |
12,000
-14,500
| -55% | -$1.71M |
|
115
SunPower Inc
SPWR
$60.8M
| $1.22M | 0.16% |
960,000
+440,000
| +85% | +$661K |
|
116
Impinj
PI
$4.24B
| $1.18M | 0.15% |
11,500
+5,000
| +77% | +$665K |
|
117
Texas Instruments
TXN
$248B
| $1.16M | 0.15% |
6,000
-54,000
| -90% | -$10.9M |
|
118
CALL
TaskUs
TASK
$594M
| $1.14M | 0.15% |
+170,000
| New | +$1.8M |
|
119
State Street Financial Select Sector SPDR ETF
XLF
$56.5B
| $1.14M | 0.14% |
+23,000
| New | +$1.2M |
|
120
PUT
Concentrix
CNXC
$1.62B
| $1.09M | 0.14% |
+40,000
| New | +$1.42M |
|
121
Comstock
LODE
$206M
| $1.07M | 0.14% |
+350,000
| New | +$1.15M |
|
|
DQ
122
CALL
Daqo New Energy
DQ
$810M
| $1.06M | 0.14% |
50,000
-100,000
| -67% | -$2.44M |
|
|
123
CALL
State Street Financial Select Sector SPDR ETF
XLF
$56.5B
| $987K | 0.13% |
+20,000
| New | +$1.04M |
|
124
Magnite
MGNI
$2.83B
| $927K | 0.12% |
+78,000
| New | +$1.05M |
|
125
Plexus
PLXS
$6.43B
| $911K | 0.12% |
+4,500
| New | +$855K |
|
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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.