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Castleark Management Portfolio holdings

AUM $3.02B
1-Year Est. Return 53.92%
This Fund
S&P 500
This Quarter Est. Return
+5.04%
1 Year Est. Return
+53.92%
3 Year Est. Return
+208.37%
5 Year Est. Return
+342.22%
10 Year Est. Return
+3,246.09%
AUM
$3.02B
AUM Growth
-$384M
Cap. Flow
-$359M
Cap. Flow %
-11.88%
Top 10 Hldgs %
32.19%
Holding
347
New
53
Increased
65
Reduced
101
Closed
55

Top Buys

Rank Stock Value
1
CVX icon
Chevron
CVX
+$24.9M
2
FANG icon
Diamondback Energy
FANG
+$24.6M
3
BKR icon
Baker Hughes
BKR
+$19.3M
4
VCLT icon
Vanguard Long-Term Corporate Bond ETF
VCLT
+$16.1M
5
CF icon
CF Industries
CF
+$13.2M

Top Sells

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$49.8M
2
MSFT icon
Microsoft
MSFT
+$44.1M
3
BX icon
Blackstone
BX
+$37.7M
4
EFA icon
iShares MSCI EAFE ETF
EFA
+$33.4M
5
NVDA icon
NVIDIA
NVDA
+$27.5M

Sector Composition

Rank Sector Weight
1 Technology 31.73%
2 Industrials 9.89%
3 Consumer Discretionary 9.68%
4 Healthcare 9.21%
5 Energy 8.12%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TWLO icon
176
Twilio
TWLO
$29.7B
$3.37M 0.11%
+26,760
New +$3.29M
JLL icon
177
Jones Lang LaSalle
JLL
$15.1B
$3.28M 0.11%
10,791
-480
-4% -$155K
BELFB
178
Bel Fuse Inc Class B
BELFB
$4B
$3.23M 0.11%
16,311
-16,790
-51% -$3.51M
IRTC icon
179
iRhythm Holdings
IRTC
$3.6B
$3.21M 0.11%
27,193
-23,000
-46% -$3.32M
OKE icon
180
Oneok
OKE
$58B
$3.11M 0.1%
34,458
+8,720
+34% +$718K
COIN icon
181
Coinbase
COIN
$46.4B
$3.08M 0.1%
17,630
– –
QQQ icon
182
Invesco QQQ Trust
QQQ
$472B
$3.07M 0.1%
5,320
– –
EYE icon
183
National Vision
EYE
$1.58B
$3.05M 0.1%
117,736
-181,930
-61% -$4.94M
EPD icon
184
Enterprise Products Partners
EPD
$83.7B
$3.01M 0.1%
79,461
– –
FIGS icon
185
FIGS
FIGS
$1.71B
$2.94M 0.1%
+199,010
New +$2.55M
COST icon
186
Costco
COST
$412B
$2.79M 0.09%
2,800
– –
MDGL icon
187
Madrigal Pharmaceuticals
MDGL
$12.6B
$2.77M 0.09%
5,296
-9,170
-63% -$4.38M
MAR icon
188
Marriott International
MAR
$97B
$2.73M 0.09%
8,360
-15,860
-65% -$5.22M
ENB icon
189
Enbridge
ENB
$121B
$2.73M 0.09%
50,340
– –
H icon
190
Hyatt Hotels
H
$17.9B
$2.56M 0.08%
17,780
-27,410
-61% -$4.35M
URI icon
191
United Rentals
URI
$63.4B
$2.49M 0.08%
3,420
-3,420
-50% -$2.87M
COGT icon
192
Cogent Biosciences
COGT
$6.75B
$2.46M 0.08%
+63,950
New +$2.36M
CELH icon
193
Celsius Holdings
CELH
$7.14B
$2.41M 0.08%
67,902
-101,940
-60% -$4.83M
MPLX icon
194
MPLX
MPLX
$57.6B
$2.39M 0.08%
41,892
-11,220
-21% -$636K
MGY icon
195
Magnolia Oil & Gas
MGY
$4.62B
$2.36M 0.08%
74,790
– –
CAMT icon
196
Camtek
CAMT
$7.28B
$2.34M 0.08%
15,420
-9,160
-37% -$1.39M
CDE icon
197
Coeur Mining
CDE
$15.8B
$2.31M 0.08%
+122,890
New +$2.67M
XMTR icon
198
Xometry
XMTR
$5.81B
$2.24M 0.07%
54,768
-112,710
-67% -$5.99M
AAOI icon
199
Applied Optoelectronics
AAOI
$9.56B
$2.17M 0.07%
+25,700
New +$1.64M
IWP icon
200
iShares Russell Mid-Cap Growth ETF
IWP
$20.4B
$2.05M 0.07%
16,000
– –
6 7
8
9 10

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Castleark Management's Q1 2026 Portfolio in Review

As of Q1 2026, Castleark Management held 347 positions worth $3.02B, down 11% from $3.41B the previous quarter. Its ten largest holdings account for 32% of the portfolio.

Castleark Management withdrew a net $359M in Q1 2026, closing 55 positions and reducing 101 holdings. Its most notable exit was Blackstone, an estimated $37.7M position sold in full.

By sector, the portfolio is most concentrated in Technology at 32% of assets, down from 34% a quarter earlier, followed by Industrials and Consumer Discretionary.

Against the trend, Castleark Management opened a new position in Chevron worth $28.3M.

  • Castleark Management's largest Q1 2026 buy was Chevron: 136,550 shares worth $28.3M.
  • Castleark Management added most to Baker Hughes in Q1 2026, an estimated $19.3M increase.
  • Castleark Management's biggest Q1 2026 reduction was Amazon, cutting an estimated $49.8M.
  • Castleark Management fully exited Blackstone in Q1 2026, selling an estimated $37.7M.
  • Castleark Management's ten largest holdings make up 32% of its $3.02B portfolio in Q1 2026.
  • Castleark Management opened 53 new positions and closed 55 in Q1 2026.
  • Castleark Management's portfolio value fell 11% quarter-over-quarter to $3.02B.

Based on Castleark Management's 13F filing for Q1 2026, filed 15 May 2026.