ARDSLEY ADVISORY PARTNERS LP

CIK

900529

Location

Norwalk, CT

Portfolio Value

Small $754,262,175

Diversification

Diversified

Filing Date

Global Rank

#2,088 / 8,605 ▼ 108 · as of Mar 2026

Top Industry

Semiconductors 16.8%

3Y Alpha vs SPY

+15.2%

Period ended 3 months ago

Filed May 15, 2026 · 55d

25 quarters · since Mar 2020

Clone Performance

Jul 2023–Jul 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+150.5%

SPY

+76.5%

Annualised alpha

+15.0%

Max drawdown

−32.3%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

122 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

5.7%

+0.4 pts

Top 5

22.8%

+2.0 pts

Top 10

36.3%

+4.0 pts

HHI

211

Diversified+20

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Technology	43.5%	$328,330,707	50
Healthcare	15.2%	$114,370,350	12
Consumer Cyclical	9.5%	$71,511,371	4
Financial Services	7.0%	$52,896,000	5
Industrials	5.4%	$40,662,419	15
Communication Services	5.3%	$40,014,255	10
Unclassified	4.2%	$31,866,660	1
Utilities	2.8%	$21,447,050	6
Basic Materials	2.6%	$19,664,920	10
Energy	2.3%	$17,543,225	6
Real Estate	1.6%	$11,713,868	1
Consumer Defensive	0.6%	$4,241,350	2

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
SHLS	Shoals Technologies Group, Inc.	+2,235,000	2,260,000	$14,870,800
SPWR	SunPower Inc.	+440,000	960,000	$1,219,200
BKD	Brookdale Senior Living Inc.	+250,000	940,000	$12,859,200
TIC	TIC Solutions, Inc.	+225,000	375,000	$2,467,500
METC	Ramaco Resources, Inc.	+130,000	160,000	$2,473,600
PROF	Profound Medical Corp.	+125,000	575,000	$3,726,000
AMZN	Amazon Com Inc	+100,000	154,000	$32,073,580
TAC	Transalta Corp	+95,000	275,000	$3,602,500
MOD	Modine Manufacturing Co	+87,500	91,100	$19,742,281
ARRY	Array Technologies, Inc.	+75,000	100,000	$723,000
ANET	Arista Networks, Inc.	+58,700	198,700	$24,396,386
EBAY	Ebay Inc	+55,500	140,500	$12,788,310
ESOA	Energy Services of America CORP	+50,000	100,000	$1,313,000
ET	Energy Transfer LP	+50,000	75,000	$1,447,500
ENPH	Enphase Energy, Inc.	+47,500	85,000	$3,213,850
NOW	ServiceNow, Inc.	+46,150	84,500	$8,834,475
WGS	GeneDx Holdings Corp.	+45,000	100,000	$6,422,000
SEZL	Sezzle Inc.	+45,000	300,000	$18,987,000
NU	Nu Holdings Ltd.	+35,000	675,000	$9,699,750
ROKU	Roku, Inc	+32,500	41,500	$3,926,730
SMTC	Semtech Corp	+29,750	288,750	$22,201,987
META	Meta Platforms, Inc.	+26,000	28,000	$16,019,640
XIFR	XPLR Infrastructure, LP	+25,000	475,000	$5,044,500
AVY	Avery Dennison Corp	+19,000	40,000	$6,907,200
NFLX	Netflix Inc	+11,000	40,000	$3,846,000
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
DNN	Denison Mines Corp.	−2,700,000	1,400,000	$4,942,000
NXE	NexGen Energy Ltd.	−825,000	300,000	$3,480,000
STKL	SunOpta Inc.	−470,000	220,000	$1,425,600
SNAP	Snap Inc	−380,000	50,000	$230,000
RUN	Sunrun Inc.	−345,000	1,135,000	$15,390,600
EOSE	Eos Energy Enterprises, Inc.	−255,000	300,000	$1,488,000
ALDX	Aldeyra Therapeutics, Inc.	−250,000	1,250,000	$2,112,500
HUT	Hut 8 Corp.	−210,000	150,000	$7,036,500
ORN	Orion Group Holdings Inc	−200,000	200,000	$2,180,000
DQ	Daqo New Energy Corp.	−185,000	50,000	$1,063,500
AGI	Alamos Gold Inc	−125,000	175,000	$7,775,250
WULF	Terawulf Inc.	−115,000	1,050,000	$15,151,500
LITE	Lumentum Holdings Inc.	−73,800	6,200	$4,357,112
AEIS	Advanced Energy Industries Inc	−68,000	5,000	$1,613,550
ARM	Arm Holdings PLC /Uk	−67,000	18,000	$2,723,040
BRBR	Bellring Brands, Inc.	−65,000	175,000	$2,815,750
TXN	Texas Instruments Inc	−54,000	6,000	$1,164,840
TER	Teradyne, Inc	−52,500	7,500	$2,223,450
INTC	Intel Corp	−40,000	71,000	$3,133,230
VIAV	Viavi Solutions Inc.	−40,000	400,000	$13,312,000
BE	Bloom Energy Corp	−38,000	13,000	$1,761,370
LLY	ELI LILLY & Co	−35,000	5,000	$4,598,850
NVDA	Nvidia Corp	−27,500	97,500	$17,004,000
WOLF	Wolfspeed, Inc.	−25,000	140,000	$2,284,800
TEVA	Teva Pharmaceutical Industries Ltd	−25,000	555,000	$16,716,600
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
SPY	Spdr S&P 500 ETF Trust	49,000	$31,866,660
UTHR	UNITED THERAPEUTICS Corp	50,000	$29,649,000
EQIX	Equinix Inc	11,950	$11,713,868
MU	Micron Technology Inc	31,000	$10,473,040
BSX	Boston Scientific Corp	150,000	$9,412,500
AMAT	Applied Materials Inc /De	25,000	$8,544,750
ZM	Zoom Communications, Inc.	106,000	$8,521,340
BOX	Box Inc	336,000	$7,943,040
AAPL	Apple Inc.	30,000	$7,613,700
VZ	Verizon Communications Inc	130,000	$6,526,000
ALK	Alaska Air Group, Inc.	165,000	$6,068,700
CIFR	Cipher Digital Inc.	450,000	$5,791,500
OKTA	Okta, Inc.	72,600	$5,714,346
SKE	Skeena Resources Ltd	175,000	$5,201,000
ADI	Analog Devices Inc	16,000	$5,090,240
ATEX	Anterix Inc.	110,000	$4,200,900
FTNT	Fortinet, Inc.	50,600	$4,135,032
HON	Honeywell International Inc	16,500	$3,911,374
ADMA	Adma Biologics, Inc.	425,000	$3,829,250
HPE	Hewlett Packard Enterprise Co	155,000	$3,690,550
DOCN	DigitalOcean Holdings, Inc.	35,000	$3,002,300
FLNC	Fluence Energy, Inc.	185,000	$2,545,600
NET	Cloudflare, Inc.	10,800	$2,228,472
AMPX	Amprius Technologies, Inc.	125,000	$2,107,500
UPWK	Upwork, Inc	190,000	$2,082,400
No positions match the current search.

Sold Out

Positions the filer fully exited

25 positions

Ticker	Company	Shares	Value
FSLR	First Solar, Inc.	127,500	$33,306,825
ARGX	Argenx SE	24,000	$20,182,800
SLV	iShares Silver Trust	295,000	$19,003,900
TEL	TE Connectivity plc	73,500	$16,721,985
ORCL	Oracle Corp	78,000	$15,202,980
CRM	Salesforce, Inc.	51,000	$13,510,410
PANW	Palo Alto Networks Inc	69,000	$12,709,800
SHOP	Shopify Inc.	78,400	$12,620,048
ABNB	Airbnb, Inc.	81,000	$10,993,320
GSM	Ferroglobe PLC	2,120,000	$9,836,800
SANM	Sanmina Corp	65,200	$9,784,564
ONTO	Onto Innovation Inc.	58,500	$9,234,810
MDB	MongoDB, Inc.	20,750	$8,708,567
JAZZ	Jazz Pharmaceuticals plc	50,000	$8,500,000
TTD	Trade Desk, Inc.	165,000	$6,263,400
RH	Rh	30,000	$5,374,500
THC	Tenet Healthcare Corp	25,000	$4,968,000
OWL	Blue Owl Capital Inc.	325,000	$4,855,500
DELL	Dell Technologies Inc.	36,000	$4,531,680
BKR	Baker Hughes Co	85,000	$3,870,900
DECK	Deckers Outdoor Corp	35,000	$3,628,450
NOK	Nokia Corp	560,000	$3,623,200
NXPI	NXP Semiconductors N.V.	14,500	$3,147,370
TRIP	TripAdvisor, Inc.	214,000	$3,115,840
TE	T1 Energy Inc.	465,000	$3,106,200
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

122 positions · $754,262,175 total · as of Mar 31, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 122 positions by value · page 1 of 3

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
AVGO	Broadcom Inc. Technology	Added	139,500	+5,500	$43,176,645	−6.9%	5.72%
SNDK	Sandisk Corp Technology	Reduced	55,000	-1,000	$34,943,700	+162.9%	4.63%
AMZN	Amazon Com Inc Consumer Cyclical	Added	154,000	+100,000	$32,073,580	+157.3%	4.25%
SPY	Spdr S&P 500 ETF Trust	NEW	49,000	NEW	$31,866,660	NEW	4.22%
UTHR	UNITED THERAPEUTICS Corp Healthcare	NEW	50,000	NEW	$29,649,000	NEW	3.93%
ANET	Arista Networks, Inc. Technology	Added	198,700	+58,700	$24,396,386	+33.0%	3.23%
SMTC	Semtech Corp Technology	Added	288,750	+29,750	$22,201,987	+16.3%	2.94%
MOD	Modine Manufacturing Co Consumer Cyclical	Added	91,100	+87,500	$19,742,281	+4007.5%	2.62%
SEZL	Sezzle Inc. Financial Services	Added	300,000	+45,000	$18,987,000	+17.3%	2.52%
NVDA	Nvidia Corp Technology	Reduced	97,500	-27,500	$17,004,000	−27.1%	2.25%
TEVA	Teva Pharmaceutical Industries Ltd Healthcare	Reduced	555,000	-25,000	$16,716,600	−7.7%	2.22%
META	Meta Platforms, Inc. Communication Services	Added	28,000	+26,000	$16,019,640	+1113.4%	2.12%
RUN	Sunrun Inc. Technology	Reduced	1,135,000	-345,000	$15,390,600	−43.5%	2.04%
WULF	Terawulf Inc. Financial Services	Reduced	1,050,000	-115,000	$15,151,500	+13.2%	2.01%
BTSG	BrightSpring Health Services, Inc. Healthcare	Held	350,000	0	$14,913,500	+13.8%	1.98%
SHLS	Shoals Technologies Group, Inc. Technology	Added	2,260,000	+2,235,000	$14,870,800	+6898.0%	1.97%
VIAV	Viavi Solutions Inc. Technology	Reduced	400,000	-40,000	$13,312,000	+69.8%	1.76%
BKD	Brookdale Senior Living Inc. Healthcare	Added	940,000	+250,000	$12,859,200	+72.7%	1.70%
EBAY	Ebay Inc Consumer Cyclical	Added	140,500	+55,500	$12,788,310	+72.7%	1.70%
EQIX	Equinix Inc Real Estate	NEW	11,950	NEW	$11,713,868	NEW	1.55%
MU	Micron Technology Inc Technology	NEW	31,000	NEW	$10,473,040	NEW	1.39%
NU	Nu Holdings Ltd. Financial Services	Added	675,000	+35,000	$9,699,750	−9.5%	1.29%
BSX	Boston Scientific Corp Healthcare	NEW	150,000	NEW	$9,412,500	NEW	1.25%
NOW	ServiceNow, Inc. Technology	Added	84,500	+46,150	$8,834,475	+50.4%	1.17%
AMAT	Applied Materials Inc /De Technology	NEW	25,000	NEW	$8,544,750	NEW	1.13%
ZM	Zoom Communications, Inc. Technology	NEW	106,000	NEW	$8,521,340	NEW	1.13%
LSCC	Lattice Semiconductor Corp Technology	Added	88,500	+2,500	$8,209,260	+29.7%	1.09%
BOX	Box Inc Technology	NEW	336,000	NEW	$7,943,040	NEW	1.05%
AGI	Alamos Gold Inc Basic Materials	Reduced	175,000	-125,000	$7,775,250	−32.8%	1.03%
AAPL	Apple Inc. Technology	NEW	30,000	NEW	$7,613,700	NEW	1.01%
HUT	Hut 8 Corp. Financial Services	Reduced	150,000	-210,000	$7,036,500	−57.5%	0.93%
AVY	Avery Dennison Corp Consumer Cyclical	Added	40,000	+19,000	$6,907,200	+80.8%	0.92%
TWLO	Twilio Inc Technology	Reduced	52,200	-10,300	$6,567,804	−26.1%	0.87%
VZ	Verizon Communications Inc Communication Services	NEW	130,000	NEW	$6,526,000	NEW	0.87%
WGS	GeneDx Holdings Corp. Healthcare	Added	100,000	+45,000	$6,422,000	−10.2%	0.85%
CVS	CVS HEALTH Corp Healthcare	Held	85,000	0	$6,104,700	−9.5%	0.81%
ALK	Alaska Air Group, Inc. Industrials	NEW	165,000	NEW	$6,068,700	NEW	0.80%
MIR	Mirion Technologies, Inc. Industrials	Held	325,000	0	$6,041,750	−20.6%	0.80%
CIFR	Cipher Digital Inc. Technology	NEW	450,000	NEW	$5,791,500	NEW	0.77%
OKTA	Okta, Inc. Technology	NEW	72,600	NEW	$5,714,346	NEW	0.76%
CWEN	Clearway Energy, Inc. Utilities	Reduced	140,000	-10,000	$5,500,600	+10.3%	0.73%
SKE	Skeena Resources Ltd Basic Materials	NEW	175,000	NEW	$5,201,000	NEW	0.69%
BWXT	BWX Technologies, Inc. Industrials	Held	25,000	0	$5,112,250	+18.3%	0.68%
ADI	Analog Devices Inc Technology	NEW	16,000	NEW	$5,090,240	NEW	0.67%
XIFR	XPLR Infrastructure, LP Utilities	Added	475,000	+25,000	$5,044,500	+12.1%	0.67%
DNN	Denison Mines Corp. Energy	Reduced	1,400,000	-2,700,000	$4,942,000	−54.7%	0.66%
LLY	ELI LILLY & Co Healthcare	Reduced	5,000	-35,000	$4,598,850	−89.3%	0.61%
LITE	Lumentum Holdings Inc. Technology	Reduced	6,200	-73,800	$4,357,112	−85.2%	0.58%
ATEX	Anterix Inc. Communication Services	NEW	110,000	NEW	$4,200,900	NEW	0.56%
FTNT	Fortinet, Inc. Technology	NEW	50,600	NEW	$4,135,032	NEW	0.55%