Grufity logo
Grufity logo

Latest CASTLEARK MANAGEMENT LLC Stock Portfolio

$3.71Billion | No. of Holdings #309

CASTLEARK MANAGEMENT LLC Performance

2026 Q2+14.71%
YTD+12.68%
2025+15.97%

About CASTLEARK MANAGEMENT LLC and 13F Hedge Fund Stock Holdings

CASTLEARK MANAGEMENT LLC is a hedge fund based in Chicago, IL. On 2026-08-14, the fund reported it's updated stock portfolio. In the 13F Holdings report, CASTLEARK MANAGEMENT LLC reported an equity portfolio of $3.7 Billions as of 30 Jun, 2026. <br><br> The top stock holdings of CASTLEARK MANAGEMENT LLC are NVDA, GOOG, AAPL. The fund has invested 7% of it's portfolio in NVIDIA CORPORATION and 4.9% of portfolio in ALPHABET INC. <br><br> The fund managers got completely rid off ULTA BEAUTY INC (ULTA), ASCENDIS PHARMA A/S (ASND) and FIVE BELOW INC (FIVE) stocks. They significantly reduced their stock positions in SCHWAB CHARLES CORP (SCHW), BLOOM ENERGY CORP (BE) and SOMNIGROUP INTERNATIONAL INC (TPX). CASTLEARK MANAGEMENT LLC opened new stock positions in SHARKNINJA INC, HEXCEL CORP NEW (HXL) and CROCS INC (CROX). The fund showed a lot of confidence in some stocks as they added substantially to F5 INC (FFIV), ISHARES INC (ACWV) and AMERICAN EXPRESS CO (AXP).
CASTLEARK MANAGEMENT LLC Equity Portfolio Value
Last Reported on: 14 Aug, 2026
$3.71Billion
  as of Aug 14, 2026

CASTLEARK MANAGEMENT LLC Annual Return Estimates Vs S&P 500

Our best estimate is that CASTLEARK MANAGEMENT LLC made a return of 14.71% in the last quarter. In trailing 12 months, it's portfolio return was 23.12%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
sharkninja inc19,364,200
ascendis pharma a/s16,455,600
hexcel corp new10,611,400
crocs inc10,352,100
sensient technologies corp10,223,200
maxlinear inc10,214,200
ul solutions inc9,858,010
casella waste sys inc9,741,610
New stocks bought by CASTLEARK MANAGEMENT LLC

Additions

Ticker% Inc.
f5 inc13,864
ishares inc5,339
ishares inc1,395
american express co920
morgan stanley780
nrg energy inc541
marriott intl inc new353
ishares tr300
Additions to existing portfolio by CASTLEARK MANAGEMENT LLC

Reductions

Ticker% Reduced
schwab charles corp-98.14
bloom energy corp-97.35
somnigroup international inc-95.72
viavi solutions inc-94.71
tower semiconductor ltd-93.09
chevron corporation-91.32
sitime corp-90.27
sterling infrastructure inc-87.69
CASTLEARK MANAGEMENT LLC reduced stake in above stock

Sold off

Ticker$ Sold
ford mtr co-4,387,850
figs inc-2,939,380
fastly inc-5,163,610
the realreal inc-1,423,380
phibro animal health corp-7,903,800
coeur mng inc-2,306,640
atmus filtration technologie-6,775,500
national vision hldgs inc-3,049,360
CASTLEARK MANAGEMENT LLC got rid off the above stocks

Sector Distribution

CASTLEARK MANAGEMENT LLC has about 33.1% of it's holdings in Technology sector.

  • Technology
  • Others
  • Industrials
  • Healthcare
  • Consumer Cyclical
  • Financial Services
  • Communication Services
  • Energy
  • Utilities
Sector%
Technology33.1
Others16.3
Industrials9.7
Healthcare9.2
Consumer Cyclical8.6
Financial Services7.9
Communication Services6.9
Energy4.3
Utilities2.2

Market Cap. Distribution

CASTLEARK MANAGEMENT LLC has about 68% of it's portfolio invested in the large-cap and mega-cap stocks.

  • MEGA-CAP
  • LARGE-CAP
  • UNALLOCATED
  • MID-CAP
Category%
MEGA-CAP42.7
LARGE-CAP25.3
UNALLOCATED16.3
MID-CAP14.9

Stocks belong to which Index?

About 71.2% of the stocks held by CASTLEARK MANAGEMENT LLC either belong to S&P 500 or RUSSELL 2000 index.

  • S&P 500
  • Others
  • RUSSELL 2000
Index%
S&P 50056.1
Others28.8
RUSSELL 200015.1
Top 5 Winners (%)%
MU
micron technology inc
207.7 %
FLEX
flex ltd
147.6 %
AMD
advanced micro devices inc
131.5 %
UCTT
ultra clean hldgs inc
126.5 %
ALGM
allegro microsystems inc
118.5 %
Top 5 Winners ($)$
LRCX
lam research corp
68.2 M
AMD
advanced micro devices inc
39.2 M
NVDA
nvidia corporation
32.9 M
GOOG
alphabet inc
32.3 M
LLY
eli lilly & co
22.5 M
Top 5 Losers (%)%
IJR
ishares tr
-60.3 %
INSM
insmed inc
-34.8 %
OXY
occidental pete corp
-25.3 %
CME
cme group inc
-25.2 %
NKE
nike inc
-22.3 %
Top 5 Losers ($)$
GILD
gilead sciences inc
-5.7 M
CVX
chevron corporation
-3.1 M
IJR
ishares tr
-2.8 M
FANG
diamondback energy inc
-2.6 M
RRC
range res corp
-2.5 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 309 stocks in it's portfolio. About 33.9% of the portfolio is in top 10 stocks. GILD proved to be the most loss making stock for the portfolio. LRCX was the most profitable stock for CASTLEARK MANAGEMENT LLC last quarter.

$3.71BTotal Value
351Positions
14 Aug, 2026Last Reported
Current holdings of Current Stock Holdings of CASTLEARK MANAGEMENT LLC, last reported on 14 Aug, 2026. Select a row with a linked ticker to view its historical trend.
ExpandHoldingsorted ascending% PortfolioShares Held$ Value% Change
AAXJ
Ishares Tr

Ishares Tr

AAXJ
CASTLEARK MANAGEMENT LLC's holding in Ishares Tr over time
0.7%258,432
$25.93M
0.7%
unchanged 0 percentunchanged
AAXJ
Ishares Tr

Ishares Tr

AAXJ
CASTLEARK MANAGEMENT LLC's holding in Ishares Tr over time
0.52%204,235
$19.30M
0.52%
unchanged 0 percentunchanged
AAXJ
Ishares Tr

Ishares Tr

AAXJ
CASTLEARK MANAGEMENT LLC's holding in Ishares Tr over time
0.37%259,994
$13.82M
0.37%
unchanged 0 percentunchanged
ACWV
Ishares Inc

Ishares Inc

ACWV
CASTLEARK MANAGEMENT LLC's holding in Ishares Inc over time
0.16%205,060
$5.77M
0.16%
increased 5339.26 percentadded
ACWV
Ishares Inc

Ishares Inc

ACWV
CASTLEARK MANAGEMENT LLC's holding in Ishares Inc over time
0.07%12,560
$2.54M
0.07%
increased 1395.24 percentadded
ACWV
Ishares Inc

Ishares Inc

ACWV
CASTLEARK MANAGEMENT LLC's holding in Ishares Inc over time
0.05%55,320
$1.91M
0.05%
new position
ACWV
Ishares Inc

Ishares Inc

ACWV
CASTLEARK MANAGEMENT LLC's holding in Ishares Inc over time
0.01%3,670
$211.5K
0.01%
unchanged 0 percentunchanged
ACWV
Ishares Inc

Ishares Inc

ACWV
CASTLEARK MANAGEMENT LLC's holding in Ishares Inc over time
0%650
$48.9K
0%
new position