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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
+38.82%
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
$809M
AUM Growth
+$48M
(+6.3%)
Cap. Flow
-$94.4M
Cap. Flow
% of AUM
-11.67%
Top 10 Holdings %
Top 10 Hldgs %
29.18%
Holding
208
New
63
Increased
29
Reduced
28
Closed
78
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
First Solar
FSLR
|
+$21.9M |
| 2 |
Sunrun
RUN
|
+$17.3M |
| 3 |
Eos Energy Enterprises
EOSE
|
+$10.9M |
| 4 |
Lumentum
LITE
|
+$10.7M |
| 5 |
Silicon Motion
SIMO
|
+$10.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Fluor
FLR
|
+$30.4M |
| 2 |
Arista Networks
ANET
|
+$23.7M |
| 3 |
Celestica
CLS
|
+$21.1M |
| 4 |
Affirm
AFRM
|
+$13.5M |
| 5 |
NVIDIA
NVDA
|
+$12.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 39.32% |
| 2 | Healthcare | 9.96% |
| 3 | Financials | 8.45% |
| 4 | Industrials | 8.25% |
| 5 | Consumer Discretionary | 3.78% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
DQ
51
CALL
Daqo New Energy
DQ
$810M
| $5.63M | 0.7% |
+200,000
| New | +$4.69M |
|
52
PUT
Amphenol
APH
$185B
| $5.57M | 0.69% |
+45,000
| New | +$4.94M |
|
53
Denison Mines
DNN
$2.43B
| $5.5M | 0.68% |
2,000,000
| – | – |
|
54
DraftKings
DKNG
$12.2B
| $5.42M | 0.67% |
145,000
+20,000
| +16% | +$887K |
|
55
eBay
EBAY
$51.2B
| $5.37M | 0.66% |
+59,000
| New | +$5.22M |
|
56
Onto Innovation
ONTO
$10.9B
| $5.23M | 0.65% |
+40,500
| New | +$4.33M |
|
57
IBM
IBM
$213B
| $5.08M | 0.63% |
+18,000
| New | +$4.71M |
|
|
58
Arista Networks
ANET
$199B
| $4.95M | 0.61% |
34,000
-184,000
| -84% | -$23.7M |
|
59
Williams Companies
WMB
$85.8B
| $4.75M | 0.59% |
+75,000
| New | +$4.4M |
|
60
PayPal
PYPL
$49.9B
| $4.43M | 0.55% |
66,000
+36,000
| +120% | +$2.54M |
|
61
CALL
Invesco Solar ETF
TAN
$1.37B
| $4.36M | 0.54% |
100,000
| – | – |
|
62
CALL
Applied Optoelectronics
AAOI
$6.14B
| $4.28M | 0.53% |
+165,000
| New | +$4.22M |
|
63
MasTec
MTZ
$22.7B
| $4.26M | 0.53% |
+20,000
| New | +$3.66M |
|
64
CALL
Magnite
MGNI
$2.83B
| $4.25M | 0.53% |
+195,000
| New | +$4.6M |
|
65
CALL
Oracle
ORCL
$339B
| $4.22M | 0.52% |
+15,000
| New | +$3.82M |
|
66
Baker Hughes
BKR
$58.3B
| $4.14M | 0.51% |
+85,000
| New | +$3.75M |
|
67
Flowserve
FLS
$8.94B
| $3.99M | 0.49% |
75,000
+50,000
| +200% | +$2.71M |
|
68
TSMC
TSM
$1.94T
| $3.91M | 0.48% |
+14,000
| New | +$3.42M |
|
69
PagerDuty
PD
$830M
| $3.75M | 0.46% |
+227,000
| New | +$3.61M |
|
70
Intel
INTC
$413B
| $3.7M | 0.46% |
+110,500
| New | +$2.68M |
|
71
PUT
Analog Devices
ADI
$172B
| $3.69M | 0.46% |
+15,000
| New | +$3.61M |
|
72
PUT
Coherent
COHR
$43.4B
| $3.66M | 0.45% |
+34,000
| New | +$3.39M |
|
|
73
Coherent
COHR
$43.4B
| $3.61M | 0.45% |
33,500
-53,500
| -61% | -$5.33M |
|
74
Western Digital
WDC
$159B
| $3.6M | 0.45% |
+30,000
| New | +$2.45M |
|
75
Clearway Energy Class C
CWEN
$4.79B
| $3.53M | 0.44% |
125,000
+70,000
| +127% | +$2.12M |
|
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Ardsley Advisory Partners's Q3 2025 Portfolio in Review
As of Q3 2025, Ardsley Advisory Partners held 208 positions worth $809M, up 6.3% from $761M the previous quarter. Its ten largest holdings account for 29% of the portfolio.
Ardsley Advisory Partners withdrew a net $94.4M in Q3 2025, closing 78 positions and reducing 28 holdings. Its most notable exit was Celestica, an estimated $21.1M position sold in full.
By sector, the portfolio is most concentrated in Technology at 39% of assets, up from 37% a quarter earlier, followed by Healthcare and Financials.
Against the trend, Ardsley Advisory Partners opened a new position in Eos Energy Enterprises worth $18.1M.
- Ardsley Advisory Partners's largest Q3 2025 buy was Eos Energy Enterprises: 1,600,000 shares worth $18.1M.
- Ardsley Advisory Partners added most to First Solar in Q3 2025, an estimated $21.9M increase.
- Ardsley Advisory Partners's biggest Q3 2025 reduction was Fluor, cutting an estimated $30.4M.
- Ardsley Advisory Partners fully exited Celestica in Q3 2025, selling an estimated $21.1M.
- Ardsley Advisory Partners's ten largest holdings make up 29% of its $809M portfolio in Q3 2025.
- Ardsley Advisory Partners opened 63 new positions and closed 78 in Q3 2025.
- Ardsley Advisory Partners's portfolio value rose 6.3% quarter-over-quarter to $809M.
Based on Ardsley Advisory Partners's 13F filing for Q3 2025, filed 14 Nov 2025.