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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
(-11%)
Cap. Flow
-$359M
Cap. Flow
% of AUM
-11.88%
Top 10 Holdings %
Top 10 Hldgs %
32.19%
Holding
347
New
53
Increased
65
Reduced
101
Closed
55
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Chevron
CVX
|
+$24.9M |
| 2 |
Diamondback Energy
FANG
|
+$24.6M |
| 3 |
Baker Hughes
BKR
|
+$19.3M |
| 4 |
Vanguard Long-Term Corporate Bond ETF
VCLT
|
+$16.1M |
| 5 |
CF Industries
CF
|
+$13.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$49.8M |
| 2 |
Microsoft
MSFT
|
+$44.1M |
| 3 |
Blackstone
BX
|
+$37.7M |
| 4 |
iShares MSCI EAFE ETF
EFA
|
+$33.4M |
| 5 |
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 | |
|---|---|---|---|---|---|---|
276
Gentex
GNTX
$5.15B
| $188K | 0.01% |
8,620
| – | – |
|
277
Iris Energy
IREN
$15.1B
| $180K | 0.01% |
+5,250
| New | +$237K |
|
278
iShares MSCI Taiwan ETF
EWT
$10.3B
| $178K | 0.01% |
2,510
-620
| -20% | -$43.6K |
|
279
Cummins
CMI
$91.1B
| $161K | 0.01% |
300
| – | – |
|
280
Trimble
TRMB
$12.2B
| $141K | ﹤0.01% |
2,160
| – | – |
|
281
iShares MSCI Emerging Markets ETF
EEM
$29B
| $114K | ﹤0.01% |
2,000
| – | – |
|
282
Stryker
SYK
$121B
| $112K | ﹤0.01% |
340
| – | – |
|
|
FISV
283
Fiserv Inc
FISV
$27.1B
| $112K | ﹤0.01% |
2,000
| – | – |
|
284
Nike
NKE
$64B
| $106K | ﹤0.01% |
2,000
| – | – |
|
285
iShares MSCI Australia ETF
EWA
$1.34B
| $105K | ﹤0.01% |
3,770
| – | – |
|
286
iShares MSCI South Korea ETF
EWY
$23.2B
| $103K | ﹤0.01% |
840
-170
| -17% | -$21.3K |
|
287
Pfizer
PFE
$141B
| $83.4K | ﹤0.01% |
2,971
| – | – |
|
288
Southwest Airlines
LUV
$23.9B
| $58.6K | ﹤0.01% |
1,560
| – | – |
|
289
RPM International
RPM
$13B
| $57.7K | ﹤0.01% |
580
| – | – |
|
290
F5
FFIV
$23.1B
| $40.5K | ﹤0.01% |
140
| – | – |
|
291
Paychex
PAYX
$40.1B
| $33.2K | ﹤0.01% |
360
| – | – |
|
|
SEE
292
DELISTED
Sealed Air
SEE
| $30.3K | ﹤0.01% |
720
| – | – |
|
293
Adaptive Biotechnologies
ADPT
$3.58B
| – | – |
-390,874
| Closed | -$6.35M |
|
294
Ameresco
AMRC
$1.24B
| – | – |
-73,710
| Closed | -$2.16M |
|
295
Antero Resources
AR
$10.4B
| – | – |
-234,290
| Closed | -$8.07M |
|
296
Arlo Technologies
ARLO
$1.43B
| – | – |
-118,031
| Closed | -$1.65M |
|
297
Alphatec Holdings
ATEC
$1.28B
| – | – |
-296,160
| Closed | -$6.23M |
|
298
AeroVironment
AVAV
$7.53B
| – | – |
-10,283
| Closed | -$2.49M |
|
299
Barclays
BCS
$94.6B
| – | – |
-165,235
| Closed | -$4.21M |
|
|
BLD
300
DELISTED
TopBuild
BLD
| – | – |
-13,907
| Closed | -$5.8M |
|
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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.