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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 | |
|---|---|---|---|---|---|---|
326
Nordson
NDSN
$15.9B
| – | – |
-3,920
| Closed | -$942K |
|
327
Palo Alto Networks
PANW
$284B
| – | – |
-11,185
| Closed | -$2.06M |
|
328
Pegasystems
PEGA
$5.3B
| – | – |
-133,167
| Closed | -$7.95M |
|
329
Penumbra
PEN
$12.5B
| – | – |
-2,686
| Closed | -$835K |
|
330
Impinj
PI
$4.19B
| – | – |
-40,540
| Closed | -$7.05M |
|
331
Piper Sandler
PIPR
$5.15B
| – | – |
-129,824
| Closed | -$11M |
|
332
Planet Fitness
PLNT
$4.37B
| – | – |
-80,305
| Closed | -$8.71M |
|
333
Insulet
PODD
$11.6B
| – | – |
-80,957
| Closed | -$23M |
|
334
Rambus
RMBS
$10.9B
| – | – |
-95,578
| Closed | -$8.78M |
|
335
Sanmina
SANM
$10.8B
| – | – |
-72,459
| Closed | -$10.9M |
|
336
Signet Jewelers
SIG
$3.51B
| – | – |
-89,388
| Closed | -$7.41M |
|
337
Silicon Laboratories
SLAB
$7.17B
| – | – |
-22,622
| Closed | -$2.96M |
|
338
iShares Silver Trust
SLV
$27.2B
| – | – |
-102,570
| Closed | -$6.61M |
|
339
SoFi Technologies
SOFI
$21.8B
| – | – |
-39,350
| Closed | -$1.03M |
|
340
Spotify
SPOT
$101B
| – | – |
-33,465
| Closed | -$19.4M |
|
341
ThredUp
TDUP
$850M
| – | – |
-373,310
| Closed | -$2.39M |
|
342
Turning Point Brands
TPB
$1.56B
| – | – |
-61,944
| Closed | -$6.71M |
|
343
Valmont Industries
VMI
$10.2B
| – | – |
-19,706
| Closed | -$7.93M |
|
344
GeneDx Holdings
WGS
$1.8B
| – | – |
-74,016
| Closed | -$9.63M |
|
345
Xeris Biopharma Holdings
XERS
$1.48B
| – | – |
-445,950
| Closed | -$3.5M |
|
346
Zeta Global
ZETA
$5.32B
| – | – |
-256,297
| Closed | -$5.22M |
|
|
JBTM
347
JBT Marel
JBTM
$6.93B
| – | – |
-58,539
| Closed | -$8.82M |
|
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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.