Latest CASTLEARK MANAGEMENT LLC Stock Portfolio

CASTLEARK MANAGEMENT LLC Performance:

2025 Q2: 161.02%YTD: 144.26%2024: 25.98%

Performance for 2025 Q2 is 161.02%, and YTD is 144.26%, and 2024 is 25.98%.

About CASTLEARK MANAGEMENT LLC and 13F Hedge Fund Stock Holdings

CASTLEARK MANAGEMENT LLC is a hedge fund based in CHICAGO, IL. On 30-Mar-2023, the fund reported that it had an AUM (Regulated Assets under Management) of $2.8 Billions. In it's latest 13F Holdings report, CASTLEARK MANAGEMENT LLC reported an equity portfolio of $3.3 Billions as of 30 Jun, 2025.

The top stock holdings of CASTLEARK MANAGEMENT LLC are , NVDA, MSFT. The fund has invested 10.5% of it's portfolio in ADVISORS INNER CIRCLE FD II and 6.7% of portfolio in NVIDIA CORPORATION.

The fund managers got completely rid off INVESCO QQQ TR (QQQ), ACCENTURE PLC IRELAND (ACN) and DOCUSIGN INC (DOCU) stocks. They significantly reduced their stock positions in VERTEX PHARMACEUTICALS INC (VRTX), ISHARES TR (IJR) and STARBUCKS CORP (SBUX). CASTLEARK MANAGEMENT LLC opened new stock positions in SNOWFLAKE INC (SNOW), DEXCOM INC (DXCM) and SPOTIFY TECHNOLOGY S A. The fund showed a lot of confidence in some stocks as they added substantially to MICROCHIP TECHNOLOGY INC. (MCHP), SCHWAB CHARLES CORP (SCHW) and ISHARES TR (AAXJ).

CASTLEARK MANAGEMENT LLC Annual Return Estimates Vs S&P 500

Our best estimate is that CASTLEARK MANAGEMENT LLC made a return of 161.02% in the last quarter. In trailing 12 months, it's portfolio return was 159.46%.

New Buys

Ticker	$ Bought
snowflake inc	34,355,400
dexcom inc	27,177,000
spotify technology s a	26,028,900
vanguard scottsdale fds	17,946,600
insulet corp	14,977,000
spdr series trust	12,135,400
old dominion freight line in	9,668,210
uber technologies inc	8,591,060

New stocks bought by CASTLEARK MANAGEMENT LLC

Additions

Ticker	% Inc.
microchip technology inc.	19,580
schwab charles corp	3,556
ishares tr	643
expand energy corporation	416
ishares tr	352
philip morris intl inc	272
cheniere energy inc	266
radnet inc	241

Additions to existing portfolio by CASTLEARK MANAGEMENT LLC

Reductions

Ticker	% Reduced
vertex pharmaceuticals inc	-98.45
ishares tr	-98.14
starbucks corp	-98.03
ftai aviation ltd	-95.39
insmed inc	-94.17
spdr gold tr	-88.87
eog res inc	-79.84
howmet aerospace inc	-76.76

CASTLEARK MANAGEMENT LLC reduced stake in above stock

Sold off

Ticker	$ Sold
adma biologics inc	-9,052,320
mueller wtr prods inc	-9,607,740
powerfleet inc	-1,866,160
imax corp	-6,440,490
mattel inc	-4,205,240
warby parker inc	-3,665,690
docusign inc	-16,185,600
veracyte inc	-5,782,050

CASTLEARK MANAGEMENT LLC got rid off the above stocks

Sector Distribution

CASTLEARK MANAGEMENT LLC has about 27.2% of it's holdings in Technology sector.

Sector	%
Technology	27.2
Others	25.9
Financial Services	9
Communication Services	8.5
Consumer Cyclical	7.2
Industrials	6.7
Healthcare	6.3
Consumer Defensive	3
Energy	2.9
Utilities	2.8

Market Cap. Distribution

CASTLEARK MANAGEMENT LLC has about 55.8% of it's portfolio invested in the large-cap and mega-cap stocks.

Category	%
MEGA-CAP	33
UNALLOCATED	25.9
LARGE-CAP	22.8
MID-CAP	13.4
SMALL-CAP	4.7

Stocks belong to which Index?

About 63.8% of the stocks held by CASTLEARK MANAGEMENT LLC either belong to S&P 500 or RUSSELL 2000 index.

Index	%
S&P 500	51.7
Others	36.2
RUSSELL 2000	12.1

Top 5 Winners (%)		%
AMPS	ishares tr	5167.7 %
CRDO	credo technology group holdi	130.6 %
HOOD	robinhood mkts inc	125.0 %
VST	vistra corp	65.0 %
AXON	axon enterprise inc	57.4 %

Top 5 Winners ($)		$
AMPS	ishares tr	4846.0 M
NVDA	nvidia corporation	55.7 M
MSFT	microsoft corp	33.6 M
NFLX	netflix inc	30.9 M
META	meta platforms inc	23.1 M

Top 5 Losers (%)		%
FAST	fastenal co	-29.7 %
PEGA	pegasystems inc	-18.1 %
OKE	oneok inc new	-17.7 %
VNOM	viper energy inc	-15.6 %
KNTK	kinetik holdings inc	-15.2 %

Top 5 Losers ($)		$
AAPL	apple inc	-10.2 M
LLY	eli lilly & co	-3.7 M
VRTX	vertex pharmaceuticals inc	-1.9 M
PEGA	pegasystems inc	-1.7 M
SBUX	starbucks corp	-1.5 M

CASTLEARK MANAGEMENT LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of CASTLEARK MANAGEMENT LLC

CASTLEARK MANAGEMENT LLC has 275 stocks in it's portfolio. About 42.6% of the portfolio is in top 10 stocks. AAPL proved to be the most loss making stock for the portfolio. AMPS was the most profitable stock for CASTLEARK MANAGEMENT LLC last quarter.

Last Reported on: 18 Aug, 2025

Ticker	Namesorted ascending	% Portfolio	Shares Held	$ Value	Type	% Change
AAPL	apple inc	2.42	393,216	80,676,100	reduced	-34.86

AAXJ	ishares tr	0.79	258,432	26,256,700	added	19.87

AAXJ	ishares tr	0.56	196,905	18,487,400	unchanged	0.00

AAXJ	ishares tr	0.42	259,994	13,855,100	added	643

AAXJ	ishares tr	0.22	54,070	7,270,250	unchanged	0.00

AAXJ	ishares tr	0.00	0.00	0.00	sold off	-100

ACN	accenture plc ireland	0.00	0.00	0.00	sold off	-100

ADMA	adma biologics inc	0.00	0.00	0.00	sold off	-100

AEIS	advanced energy inds	0.18	45,890	6,080,420	new

AGCO	agco corp	0.08	26,770	2,761,590	reduced	-2.87

AIT	applied indl technologies in	0.12	17,240	4,007,440	reduced	-50.36

ALGM	allegro microsystems inc	0.11	103,160	3,527,040	new

ALKT	alkami technology inc	0.24	264,440	7,970,220	reduced	-2.87

AM	antero midstream corp	0.03	52,160	988,432	unchanged	0.00

AMPS	ishares tr	2.25	3,258,100	74,871,100	reduced	-20.14

AMSC	american superconductor corp	0.12	109,170	4,005,450	new

AMZN	amazon com inc	3.95	598,607	131,328,000	added	4.92

ANET	arista networks inc	2.53	822,614	84,161,600	added	15.25

ANSS	ansys inc	0.04	4,040	1,418,930	unchanged	0.00

APG	api group corp	0.23	148,843	7,598,440	reduced	-17.89