Castleark Management Portfolio holdings
CastleArk Management is an employee-owned manager of growth stock strategies, founded in 1999. It mainly buys U.S. stocks and, to a lesser extent, those of other countries, and its process aims to exploit behavioral biases found in growth stocks. Co-founder Jerome Castellini controls it and a sister firm, CastleArk Alternatives, which has existed since 2005 and sponsors private funds. Its clients are mainly investment funds and institutions, many of them retirement plans.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Morgan Stanley
MS
|
+$36.6M |
| 2 |
Apple
AAPL
|
+$34.9M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$32.1M |
| 4 |
Visa
V
|
+$26.4M |
| 5 |
Gilead Sciences
GILD
|
+$24.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Charles Schwab
SCHW
|
+$45.1M |
| 2 |
Ulta Beauty
ULTA
|
+$26.5M |
| 3 |
Shopify
SHOP
|
+$25.5M |
| 4 |
Chevron
CVX
|
+$23.2M |
| 5 |
DigitalOcean
DOCN
|
+$19.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 34.63% |
| 2 | Industrials | 12.03% |
| 3 | Miscellaneous | 11.82% |
| 4 | Healthcare | 10.33% |
| 5 | Consumer Discretionary | 9.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
26
ServiceNow
NOW
$109B
| $31.9M | 0.86% |
321,623
+17,867
| +6% | +$1.77M |
2022 Q3
15 quarters
|
|
27
iShares 10-20 Year Treasury Bond ETF
TLH
$12.1B
| $25.9M | 0.7% |
258,432
| – | – |
2024 Q4
6 quarters
|
|
28
Booking.com
BKNG
$111B
| $24.4M | 0.66% |
136,776
+14,376
| +12% | +$2.45M |
2025 Q2
4 quarters
|
|
29
Moody's
MCO
$85.2B
| $24.2M | 0.65% |
53,444
+36,544
| +216% | +$16.4M |
2026 Q1
1 quarter
|
|
30
Tesla
TSLA
$1.58T
| $20.2M | 0.55% |
48,070
+8,890
| +23% | +$3.54M |
2017 Q2
36 quarters
|
|
31
Caterpillar
CAT
$286B
| $20.2M | 0.54% |
18,980
+5,060
| +36% | +$4.45M |
2025 Q3
3 quarters
|
|
32
GE Aerospace
GE
$313B
| $19.7M | 0.53% |
52,830
+22,150
| +72% | +$6.93M |
2025 Q1
5 quarters
|
|
33
TSMC
TSM
$2.11T
| $19.7M | 0.53% |
41,210
| – | – |
2016 Q2
40 quarters
|
|
34
Ligand Pharmaceuticals
LGND
$6.43B
| $19.6M | 0.53% |
62,043
+13,347
| +27% | +$3.14M |
2025 Q3
3 quarters
|
|
35
SharkNinja
SN
$29.3B
| $19.4M | 0.52% |
+127,170
| New | +$15.2M |
2026 Q2
0 quarters
|
|
36
iShares MBS ETF
MBB
$35.8B
| $19.3M | 0.52% |
204,235
| – | – |
2024 Q4
6 quarters
|
|
37
Twilio
TWLO
$31.5B
| $19.1M | 0.51% |
92,390
+65,630
| +245% | +$11.6M |
2026 Q1
1 quarter
|
|
38
Baker Hughes
BKR
$54.8B
| $18.3M | 0.49% |
330,020
-57,170
| -15% | -$3.61M |
2024 Q4
6 quarters
|
|
39
Garrett Motion
GTX
$3.86B
| $17M | 0.46% |
469,470
-18,530
| -4% | -$516K |
2025 Q4
2 quarters
|
|
40
JPMorgan Chase
JPM
$895B
| $16.5M | 0.45% |
50,525
| – | – |
2023 Q2
12 quarters
|
|
41
Ascendis Pharma A/S
ASND
$16.5B
| $16.5M | 0.44% |
61,696
-5,920
| -9% | -$1.38M |
2025 Q3
3 quarters
|
|
42
JB Hunt Transport Services
JBHT
$20.8B
| $16.4M | 0.44% |
56,520
+33,920
| +150% | +$8.71M |
2013 Q2
52 quarters
|
|
43
Diamondback Energy
FANG
$59.4B
| $15.9M | 0.43% |
90,680
-54,340
| -37% | -$10.5M |
2026 Q1
1 quarter
|
|
44
General Motors
GM
$74.2B
| $15.4M | 0.41% |
199,440
+100,160
| +101% | +$7.87M |
2025 Q4
2 quarters
|
|
45
BrightSpring Health Services
BTSG
$13.3B
| $14.8M | 0.4% |
212,430
-34,770
| -14% | -$1.93M |
2025 Q4
2 quarters
|
|
46
Semtech
SMTC
$11.9B
| $14.8M | 0.4% |
91,218
-16,540
| -15% | -$2.16M |
2025 Q3
3 quarters
|
|
47
FirstCash
FCFS
$7.77B
| $14.8M | 0.4% |
68,190
-2,540
| -4% | -$552K |
2025 Q4
2 quarters
|
|
48
Marriott International
MAR
$104B
| $14M | 0.38% |
37,910
+29,550
| +353% | +$10.9M |
2025 Q4
2 quarters
|
|
49
iShares 5-10 Year Investment Grade Corporate Bond ETF
IGIB
$19.6B
| $13.8M | 0.37% |
259,994
| – | – |
2024 Q4
6 quarters
|
|
50
TJX Companies
TJX
$154B
| $13.7M | 0.37% |
90,620
| – | – |
2013 Q2
52 quarters
|
|
Similar funds
Castleark Management's Q2 2026 Portfolio in Review
As of Q2 2026, Castleark Management held 350 positions worth $3.71B, up 23% from $3.02B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Castleark Management's Q2 2026 filing shows 58 new, 69 increased, 89 reduced and 41 closed positions. Its largest new stake was SharkNinja: 127,170 shares worth $19.4M. The largest sale was Charles Schwab, an estimated $45.1M.
By sector, the portfolio is most concentrated in Technology at 35% of assets, up from 32% a quarter earlier, followed by Industrials and Miscellaneous.
- Castleark Management's largest Q2 2026 buy was SharkNinja: 127,170 shares worth $19.4M.
- Castleark Management added most to Morgan Stanley in Q2 2026, an estimated $36.6M increase.
- Castleark Management's biggest Q2 2026 reduction was Charles Schwab, cutting an estimated $45.1M.
- Castleark Management fully exited Ulta Beauty in Q2 2026, selling an estimated $26.5M.
- Castleark Management's ten largest holdings make up 34% of its $3.71B portfolio in Q2 2026.
- Castleark Management opened 58 new positions and closed 41 in Q2 2026.
- Castleark Management's portfolio value rose 23% quarter-over-quarter to $3.71B.
Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.