ARDSLEY ADVISORY PARTNERS LP
Registered adviserFiling Date
Global Rank
#2,609
/ 8,819
▲ 117
Top Industry
Semiconductors
12.7%
Period ended 4 months ago
Filed Jul 13, 2026 · 4mo
26 quarters · since Mar 2020
Regulatory profile
From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.
Holder type
Registered adviser
Form ADV roster, Oct 1, 2026
Regulatory AUM
$1,635,701,621
Main clients
Pooled investment vehicles
(87% of AUM)
Private funds
6 funds
· Hedge funds
Focus by fund count, roster of Oct 1, 2026
$837,950,600 gross assets
LEI
549300GQR5ULS7W2C050
Private funds on Schedule D 7.B.(1)
As filed Jan 30, 2024; SEC's bulk Form ADV archive ends with 2024 filings.
$830,876,342 gross assets in 6 funds
Hedge funds
$830,876,342
(6)
Form ADV history
Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.
| Rosters | Regulatory AUM | Main clients |
|---|---|---|
| Mar 2026 to Oct 2026 | $1,635,701,621 | Pooled investment vehicles (87%) |
| Apr 2025 to Feb 2026 | $1,143,814,787 | Pooled investment vehicles (92%) |
| Feb 2024 to Mar 2025 | $869,605,434 | Pooled investment vehicles (98%) |
| May 2023 to Jan 2024 | $789,305,344 | Pooled investment vehicles (98%) |
| Apr 2023 | $789,305,344 | Pooled investment vehicles (98%) |
| Apr 2022 to Mar 2023 | $851,898,478 | Pooled investment vehicles (97%) |
3 earlier changes not shown.
Portfolio style
Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.
Style
Diversified active
Top 10 weight 32.0%, 52.4 effective positions, active share 83.6% against the Nasdaq-100 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests
Turnover
High turnover
165.7% over the last four quarters (100%+)
Horizon
Medium horizon
Value-weighted holding period 4.3 quarters (4 to under 12)
Closest benchmark: the Nasdaq-100 as of 2026-06-30, active share 83.6%; sector active share 25.8% against the combined 13F book's sector weights.
Over time 26 measured quarters
How the bands are measured
Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.
Clone Performance
Build a hypothetical price-return history from this filer's public 13F holdings.
View clone backtestPortfolio Concentration
136 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026Top Position
6.0%
+0.4 pts
Top 5
20.4%
−1.8 pts
Top 10
30.9%
−4.5 pts
HHI
180
Diversified−22
Portfolio Trend
26 quarters · across all stocks
Sector Breakdown
As of Jun 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 51.0% | $485,246,121 |
| Healthcare | 12.8% | $121,673,250 |
| Industrials | 9.4% | $89,065,565 |
| Financial Services | 8.7% | $82,316,450 |
| Consumer Cyclical | 6.7% | $63,719,660 |
| Energy | 2.9% | $28,019,750 |
| Communication Services | 2.9% | $27,700,895 |
| Basic Materials | 2.6% | $25,013,300 |
| Utilities | 1.7% | $16,154,400 |
| Real Estate | 1.2% | $11,839,900 |
| Unclassified | 0.0% | $0 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased
25 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| RUN | Sunrun Inc. | +465,000 | 1,600,000 | $21,408,000 | |
| SPWR | SunPower Inc. | +456,065 | 1,416,065 | $972,836 | |
| EOSE | Eos Energy Enterprises, Inc. | +250,000 | 550,000 | $3,234,000 | |
| ADMA | Adma Biologics, Inc. | +175,000 | 600,000 | $5,022,000 | |
| ENPH | Enphase Energy, Inc. | +135,000 | 220,000 | $10,832,800 | |
| AMD | Advanced Micro Devices Inc | +85,000 | 93,000 | $54,024,630 | |
| FCEL | Fuelcell Energy Inc | +75,000 | 120,000 | $4,321,200 | |
| S | SentinelOne, Inc. | +72,000 | 118,000 | $2,002,460 | |
| TAC | Transalta Corp | +70,000 | 345,000 | $4,771,350 | |
| ZM | Zoom Communications, Inc. | +62,000 | 145,000 | $12,514,950 | |
| EBAY | Ebay Inc | +60,500 | 201,000 | $22,461,750 | |
| FLR | Fluor Corp | +60,000 | 142,500 | $7,465,575 | |
| XIFR | XPLR Infrastructure, LP | +50,000 | 525,000 | $6,200,250 | |
| ET | Energy Transfer LP | +50,000 | 125,000 | $2,393,750 | |
| LXU | Lsb Industries, Inc. | +50,000 | 75,000 | $810,750 | |
| ARM | Arm Holdings PLC | +29,000 | 47,000 | $16,664,790 | |
| TIC | TIC Solutions, Inc. | +25,000 | 400,000 | $3,236,000 | |
| ALDX | Aldeyra Therapeutics, Inc. | +25,000 | 975,000 | $2,076,750 | |
| VZ | Verizon Communications Inc | +25,000 | 155,000 | $6,562,700 | |
| TWLO | Twilio Inc | +21,800 | 69,000 | $14,236,770 | |
| PI | Impinj Inc | +21,500 | 33,000 | $4,726,590 | |
| BE | Bloom Energy Corp | +18,000 | 31,000 | $9,383,700 | |
| GOOG | Alphabet Inc. | +13,500 | 43,500 | $15,369,855 | |
| OKTA | Okta, Inc. | +8,900 | 76,500 | $10,438,425 | |
| TXN | Texas Instruments Inc | +7,000 | 13,000 | $3,874,910 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced
25 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| DNN | Denison Mines Corp. | −1,000,000 | 400,000 | $1,224,000 | |
| SHLS | Shoals Technologies Group, Inc. | −595,000 | 1,665,000 | $16,483,500 | |
| SMTC | Semtech Corp | −213,750 | 45,000 | $7,283,250 | |
| FLNC | Fluence Energy, Inc. | −165,000 | 20,000 | $397,600 | |
| TEVA | Teva Pharmaceutical Industries Ltd | −90,000 | 465,000 | $15,754,200 | |
| SEZL | Sezzle Inc. | −85,000 | 215,000 | $36,900,450 | |
| WULF | Terawulf Inc. | −84,000 | 966,000 | $23,860,200 | |
| WOLF | Wolfspeed, Inc. | −80,000 | 60,000 | $2,895,000 | |
| CIFR | Cipher Digital Inc. | −75,000 | 375,000 | $9,187,500 | |
| AGI | Alamos Gold Inc | −70,000 | 105,000 | $3,185,700 | |
| AVGO | Broadcom Inc. | −68,500 | 21,000 | $7,932,750 | |
| METC | Ramaco Resources, Inc. | −60,000 | 100,000 | $1,323,000 | |
| HUT | Hut 8 Corp. | −60,000 | 90,000 | $10,390,050 | |
| NOW | ServiceNow, Inc. | −51,000 | 21,500 | $2,134,520 | |
| MOD | Modine Manufacturing Co | −46,100 | 45,000 | $12,015,900 | |
| CVS | CVS HEALTH Corp | −45,000 | 40,000 | $4,138,000 | |
| AMZN | Amazon Com Inc | −37,000 | 69,000 | $16,445,460 | |
| SKE | Skeena Resources Ltd | −30,000 | 145,000 | $3,865,700 | |
| AVY | Avery Dennison Corp | −28,000 | 12,000 | $1,948,200 | |
| WGS | GeneDx Holdings Corp. | −25,000 | 75,000 | $5,148,750 | |
| BTSG | BrightSpring Health Services, Inc. | −25,000 | 325,000 | $22,665,500 | |
| MGNI | Magnite, Inc. | −20,500 | 57,500 | $1,091,350 | |
| UTHR | UNITED THERAPEUTICS Corp | −20,000 | 30,000 | $16,254,900 | |
| SNDK | Sandisk Corp | −17,000 | 25,000 | $56,843,250 | |
| ALK | Alaska Air Group, Inc. | −15,000 | 150,000 | $7,830,000 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarter
25 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| P | Everpure, Inc. | 233,000 | $18,358,070 | |
| PANW | Palo Alto Networks Inc | 43,000 | $14,663,860 | |
| PRIM | Primoris Services Corp | 135,000 | $13,381,200 | |
| AAPL | Apple Inc. | 45,000 | $13,021,200 | |
| ONTO | Onto Innovation Inc. | 31,500 | $11,921,175 | |
| SNX | Td Synnex Corp | 43,500 | $11,629,290 | |
| ALGT | Allegiant Travel CO | 90,000 | $10,584,000 | |
| OSCR | Oscar Health, Inc. | 350,000 | $9,982,000 | |
| CBRS | Cerebras Systems Inc. | 39,000 | $8,619,000 | |
| RELY | Remitly Global, Inc. | 375,000 | $8,403,750 | |
| DVN | Devon Energy Corp | 200,000 | $8,264,000 | |
| GLW | Corning Inc | 30,000 | $7,662,900 | |
| VRTX | Vertex Pharmaceuticals Inc | 15,000 | $7,450,950 | |
| JAZZ | Jazz Pharmaceuticals plc | 30,000 | $7,229,100 | |
| GSM | Ferroglobe PLC | 2,185,000 | $6,948,300 | |
| AKAM | Akamai Technologies Inc | 56,000 | $6,619,760 | |
| MCHP | Microchip Technology Inc | 70,000 | $6,384,000 | |
| SLB | Slb Limited | 135,000 | $6,276,150 | |
| CAMT | Camtek Ltd | 37,000 | $6,035,440 | |
| CRM | Salesforce, Inc. | 36,000 | $5,639,760 | |
| GMTL | Guardian Metal Resources PLC | 400,000 | $5,604,000 | |
| AAOI | Applied Optoelectronics, Inc. | 35,000 | $5,185,600 | |
| BWA | Borgwarner Inc | 70,000 | $4,648,000 | |
| NAVN | Navan, Inc. | 200,000 | $4,574,000 | |
| GFS | GLOBALFOUNDRIES Inc. | 54,500 | $4,491,345 | |
| No positions match the current search. | ||||
Sold Out
Positions the filer fully exited
25 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| ANET | Arista Networks, Inc. | 173,700 | $21,326,886 | |
| META | Meta Platforms, Inc. | 28,000 | $16,019,640 | |
| NVDA | Nvidia Corp | 87,500 | $15,260,000 | |
| BSX | Boston Scientific Corp | 150,000 | $9,412,500 | |
| AMAT | Applied Materials Inc | 25,000 | $8,544,750 | |
| LSCC | Lattice Semiconductor Corp | 81,500 | $7,559,940 | |
| XLU | State Street(R) Utilities Select Sector SPDR(R) ETF | 150,000 | $6,883,500 | |
| ADI | Analog Devices Inc | 16,000 | $5,090,240 | |
| MU | Micron Technology Inc | 14,000 | $4,729,760 | |
| LLY | ELI LILLY & Co | 5,000 | $4,598,850 | |
| ATEX | Anterix Inc. | 110,000 | $4,200,900 | |
| ROKU | Roku, Inc | 41,500 | $3,926,730 | |
| NFLX | Netflix Inc | 40,000 | $3,846,000 | |
| HON | Honeywell International Inc | 16,500 | $3,729,495 | |
| NXE | NexGen Energy Ltd. | 300,000 | $3,480,000 | |
| BKD | Brookdale Senior Living Inc. | 250,000 | $3,420,000 | |
| ORA | Ormat Technologies, Inc. | 30,000 | $3,357,600 | |
| MSFT | Microsoft Corp | 8,000 | $2,961,360 | |
| BRBR | Bellring Brands, Inc. | 175,000 | $2,815,750 | |
| INTC | Intel Corp | 53,000 | $2,338,890 | |
| NET | Cloudflare, Inc. | 10,800 | $2,228,472 | |
| TER | Teradyne, Inc | 7,500 | $2,223,450 | |
| RSP | Victory Portfolios II | 11,000 | $2,111,120 | |
| AMPX | Amprius Technologies, Inc. | 125,000 | $2,107,500 | |
| FTNT | Fortinet, Inc. | 25,600 | $2,092,032 | |
| No positions match the current search. | ||||
136 tracked positions ·
$950,749,291 total
· filing declares
145 positions · $960,211,633
· as of Jun 30, 2026
All sectors
Basic Materials
Communication Services
Consumer Cyclical
Energy
Financial Services
Healthcare
Industrials
Real Estate
Technology
Utilities
Showing 1–50
of 136 positions by value
· page 1 of 3
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| SNDK |
Sandisk Corp
Technology
|
Reduced | 25,000 | $56,843,250 | 5.98% | |
| AMD |
Advanced Micro Devices Inc
Technology
|
Added | 93,000 | $54,024,630 | 5.68% | |
| SEZL |
Sezzle Inc.
Financial Services
|
Reduced | 215,000 | $36,900,450 | 3.88% | |
| WULF |
Terawulf Inc.
Financial Services
|
Reduced | 966,000 | $23,860,200 | 2.51% | |
| BTSG |
BrightSpring Health Services, Inc.
Healthcare
|
Reduced | 325,000 | $22,665,500 | 2.38% | |
| EBAY |
Ebay Inc
Consumer Cyclical
|
Added | 201,000 | $22,461,750 | 2.36% | |
| RUN |
Sunrun Inc.
Technology
|
Added | 1,600,000 | $21,408,000 | 2.25% | |
| P |
Everpure, Inc.
CALL
+ SHARES
Technology
|
NEW | 263,000 | $20,721,770 | 2.18% | |
| VIAV |
Viavi Solutions Inc.
Technology
|
Reduced | 390,000 | $18,622,500 | 1.96% | |
| ARM |
Arm Holdings PLC
Technology
|
Added | 47,000 | $16,664,790 | 1.75% | |
| SHLS |
Shoals Technologies Group, Inc.
Technology
|
Reduced | 1,665,000 | $16,483,500 | 1.73% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
Reduced | 69,000 | $16,445,460 | 1.73% | |
| UTHR |
UNITED THERAPEUTICS Corp
Healthcare
|
Reduced | 30,000 | $16,254,900 | 1.71% | |
| TEVA |
Teva Pharmaceutical Industries Ltd
Healthcare
|
Reduced | 465,000 | $15,754,200 | 1.66% | |
| GOOG |
Alphabet Inc.
Communication Services
|
Added | 43,500 | $15,369,855 | 1.62% | |
| PANW |
Palo Alto Networks Inc
Technology
|
NEW | 43,000 | $14,663,860 | 1.54% | |
| TWLO |
Twilio Inc
Technology
|
Added | 69,000 | $14,236,770 | 1.50% | |
| ZM |
Zoom Communications, Inc.
CALL
+ SHARES
Technology
|
Added | 158,000 | $13,636,980 | 1.43% | |
| PRIM |
Primoris Services Corp
Industrials
|
NEW | 135,000 | $13,381,200 | 1.41% | |
| AAPL |
Apple Inc.
Technology
|
Added | 45,000 | $13,021,200 | 1.37% | |
| MOD |
Modine Manufacturing Co
Consumer Cyclical
|
Reduced | 45,000 | $12,015,900 | 1.26% | |
| ONTO |
Onto Innovation Inc.
Technology
|
NEW | 31,500 | $11,921,175 | 1.25% | |
| SNX |
Td Synnex Corp
Technology
|
NEW | 43,500 | $11,629,290 | 1.22% | |
| BKD |
Brookdale Senior Living Inc.
CALL
Healthcare
|
Reduced | 690,000 | $11,102,100 | 1.17% | |
| ENPH |
Enphase Energy, Inc.
Technology
|
Added | 220,000 | $10,832,800 | 1.14% | |
| ALGT |
Allegiant Travel CO
Industrials
|
NEW | 90,000 | $10,584,000 | 1.11% | |
| OKTA |
Okta, Inc.
Technology
|
Added | 76,500 | $10,438,425 | 1.10% | |
| EQIX |
Equinix Inc
Real Estate
|
Reduced | 10,000 | $10,423,900 | 1.10% | |
| HUT |
Hut 8 Corp.
Financial Services
|
Reduced | 90,000 | $10,390,050 | 1.09% | |
| OSCR |
Oscar Health, Inc.
Healthcare
|
NEW | 350,000 | $9,982,000 | 1.05% | |
| BE |
Bloom Energy Corp
Industrials
|
Added | 31,000 | $9,383,700 | 0.99% | |
| CIFR |
Cipher Digital Inc.
Technology
|
Reduced | 375,000 | $9,187,500 | 0.97% | |
| NU |
Nu Holdings Ltd.
Financial Services
|
Held | 675,000 | $9,018,000 | 0.95% | |
| FCEL |
Fuelcell Energy Inc
CALL
+ SHARES
Industrials
|
Added | 245,000 | $8,822,450 | 0.93% | |
| CBRS |
Cerebras Systems Inc.
Technology
|
NEW | 39,000 | $8,619,000 | 0.91% | |
| LITE |
Lumentum Holdings Inc.
Technology
|
Added | 10,000 | $8,580,600 | 0.90% | |
| RELY |
Remitly Global, Inc.
Technology
|
NEW | 375,000 | $8,403,750 | 0.88% | |
| DVN |
Devon Energy Corp
Energy
|
NEW | 200,000 | $8,264,000 | 0.87% | |
| AVGO |
Broadcom Inc.
Technology
|
Reduced | 21,000 | $7,932,750 | 0.83% | |
| ALK |
Alaska Air Group, Inc.
Industrials
|
Reduced | 150,000 | $7,830,000 | 0.82% | |
| GLW |
Corning Inc
Technology
|
NEW | 30,000 | $7,662,900 | 0.81% | |
| FLR |
Fluor Corp
Industrials
|
Added | 142,500 | $7,465,575 | 0.79% | |
| VRTX |
Vertex Pharmaceuticals Inc
Healthcare
|
NEW | 15,000 | $7,450,950 | 0.78% | |
| VCYT |
Veracyte, Inc.
Healthcare
|
Held | 125,000 | $7,341,250 | 0.77% | |
| SMTC |
Semtech Corp
Technology
|
Reduced | 45,000 | $7,283,250 | 0.77% | |
| JAZZ |
Jazz Pharmaceuticals plc
Healthcare
|
NEW | 30,000 | $7,229,100 | 0.76% | |
| GSM |
Ferroglobe PLC
Basic Materials
|
NEW | 2,185,000 | $6,948,300 | 0.73% | |
| AKAM |
Akamai Technologies Inc
Technology
|
NEW | 56,000 | $6,619,760 | 0.70% | |
| ORCL |
Oracle Corp
CALL
Technology
|
NEW | 45,000 | $6,594,750 | 0.69% | |
| VZ |
Verizon Communications Inc
Communication Services
|
Added | 155,000 | $6,562,700 | 0.69% |
Showing the top 50 of 136 positions. Create a free account to see every position, past quarters, search, filters and CSV export.
Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.