CASTLEARK MANAGEMENT LLC

All Holdings — 2025 Q4

AI Portfolio Summary
In 2025 Q4, CASTLEARK MANAGEMENT LLC maintained a portfolio of 347 distinct positions. The most significant new addition to the portfolio was ULTA BEAUTY INC, which now represents 0.89% of the total fund value. They heavily accumulated shares in NVIDIA CORPORATION, increasing their position by 2.2%. The fund also reduced its exposure to LAM RESEARCH CORP by 26.0%.
PCA Score Concentration Risk
Risk ENB
Total Positions
347
Quarter
2025 Q4
Top Holding
NVDA (7.7%)
Top 10 Concentration
34.8%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 347
Stock History Sector / Type Port % Prev % Rank / Prev Conviction Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
NVDA
NVIDIA CORPORAT...
Technology 7.71% 7.21% #1 1
Prev: #2
5.6 30,630 2.2%
P
S
1,408,146 $262,619,229 2020 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
MSFT
MICROSOFT CORP
Technology 5.25% 5.25% #2 1
Prev: #3
4.1 7,856 2.2%
P
S
369,460 $178,678,245 1999 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
GOOGL
ALPHABET INC
Communication Services 3.51% 2.55% #3 3
Prev: #6
2.9 7,760 2.1%
P
S
381,639 $119,453,007 2015 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
AMZN
AMAZON COM INC
Consumer Cyclical 3.20% 2.40% #4 3
Prev: #7
4.3 81,542 20.9%
P
S
472,149 $108,981,432 2008 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
AAPL
APPLE INC
Technology 3.09% 2.71% #5
Prev: #5
2.2 7,020 1.8%
P
S
387,041 $105,220,966 2001 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
LLY
ELI LILLY & CO
Healthcare 2.57% 0.95% #6 16
Prev: #22
4.0 37,025 83.1%
P
S
81,578 $87,670,245 2002 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
SPIB
SPDR SERIES TRU...
ETF 2.50% 2.39% #7 1
Prev: #8
2.0 no change no change
P
S
2,519,370 $85,179,900 2024 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
META
META PLATFORMS ...
Communication Services 2.37% 3.03% #8 4
Prev: #4
1.4 -24,960 -16.9%
P
S
122,415 $80,804,917 2014 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
VMBS
VANGUARD SCOTTS...
ETF 2.36% 2.25% #9
Prev: #9
1.9 no change no change
P
S
1,705,540 $80,296,823 2024 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
GOVT
ISHARES TR
ETF 2.25% 2.11% #10
Prev: #10
1.4 71,470 2.2%
P
S
3,329,569 $76,663,326 2024 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
AVGO
BROADCOM INC
Technology 2.09% 1.90% #11
Prev: #11
1.3 -6 -0.0%
P
S
205,880 $71,255,068 2016 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
LRCX
LAM RESEARCH CO...
Technology 1.87% 1.89% #12
Prev: #12
0.7 -131,244 -26.0%
P
S
372,876 $63,828,914 2018 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
SCHW
SCHWAB CHARLES ...
Financial Services 1.83% 1.64% #13 2
Prev: #15
1.2 10,861 1.8%
P
S
622,535 $62,197,472 1999 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
V
VISA INC
Financial Services 1.76% 1.60% #14 3
Prev: #17
1.2 3,388 2.0%
P
S
170,478 $59,788,339 2014 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
MA
MASTERCARD INCO...
Financial Services 1.72% 1.60% #15 1
Prev: #16
1.2 2,122 2.1%
P
S
102,451 $58,487,227 2007 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
SHOP
SHOPIFY INC
Technology 1.63% 1.41% #16 2
Prev: #18
1.2 7,138 2.1%
P
S
345,382 $55,596,141 2016 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
ANET
ARISTA NETWORKS...
Technology 1.58% 1.64% #17 3
Prev: #14
1.1 8,798 2.2%
P
S
411,277 $53,889,625 2017 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
NOW
SERVICENOW INC
Technology 1.22% 1.37% #18 1
Prev: #19
3.5 217,442 410.4%
P
S
270,420 $41,425,640 2014 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
SPTS
SPDR SERIES TRU...
ETF 1.15% 1.10% #19 2
Prev: #21
1.5 no change no change
P
S
1,334,080 $39,061,862 2024 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
BX
BLACKSTONE INC
Financial Services 1.11% 1.15% #20
Prev: #20
0.9 5,094 2.1%
P
S
244,268 $37,651,470 2019 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
GILD
GILEAD SCIENCES...
Healthcare 1.00% 0.44% #21 18
Prev: #39
3.4 136,296 96.6%
P
S
277,328 $34,039,239 2001 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
EFA
ISHARES TR
ETF 0.98% 0.91% #22 2
Prev: #24
1.4 no change no change
P
S
347,580 $33,378,107 2007 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
SNOW
SNOWFLAKE INC
Technology 0.97% 0.94% #23
Prev: #23
0.9 3,082 2.1%
P
S
151,192 $33,165,477 2025 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
MCHP
MICROCHIP TECHN...
Technology 0.96% 0.85% #24 1
Prev: #25
2.4 43,150 9.1%
P
S
515,494 $32,847,278 2002 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
GEV
GE VERNOVA INC
Industrials 0.92% 0.80% #25 1
Prev: #26
0.9 1,168 2.5%
P
S
47,741 $31,202,085 2024 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
ULTA
ULTA BEAUTY INC
Consumer Cyclical 0.89% #26
Prev: #—
3.9 49,941 no change
NEW
49,941 $30,214,804 2008 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
BKNG
BOOKING HOLDING...
Consumer Cyclical 0.86% 0.31% #27 29
Prev: #56
3.3 3,412 165.6%
P
S
5,472 $29,304,366 2025 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
TLH
ISHARES TR
ETF 0.77% 0.75% #28 1
Prev: #27
1.3 no change no change
P
S
258,432 $26,274,781 2024 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
UBER
UBER TECHNOLOGI...
Technology 0.74% 0.71% #29 1
Prev: #28
2.8 51,868 20.2%
P
S
309,136 $25,259,503 2024 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
PODD
INSULET CORP
Healthcare 0.68% 0.44% #30 10
Prev: #40
3.3 30,460 60.3%
P
S
80,957 $23,011,218 2012 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
AMD
ADVANCED MICRO ...
Technology 0.66% #31
Prev: #—
3.8 104,746 no change
NEW
104,746 $22,432,403 2000 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
VRT
VERTIV HOLDINGS...
Industrials 0.59% 0.52% #32
Prev: #32
0.7 2,536 2.1%
P
S
124,737 $20,208,641 2022 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
MBB
ISHARES TR
ETF 0.57% 0.53% #33 2
Prev: #31
0.7 7,330 3.7%
P
S
204,235 $19,447,257 2024 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
SPOT
SPOTIFY TECHNOL...
Communication Services 0.57% 0.64% #34 5
Prev: #29
0.7 714 2.2%
P
S
33,465 $19,433,460 2025 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
GE
GE AEROSPACE
Industrials 0.56% 0.44% #35 3
Prev: #38
2.2 8,640 16.4%
P
S
61,380 $18,906,881 1999 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
TPR
TAPESTRY INC
Consumer Cyclical 0.53% #36
Prev: #—
3.7 142,084 no change
NEW
142,084 $18,154,073 2017 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
DAL
DELTA AIR LINES...
Industrials 0.53% 0.37% #37 15
Prev: #52
2.2 31,250 13.6%
P
S
260,740 $18,095,356 2014 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
VCLT
VANGUARD SCOTTS...
ETF 0.53% 0.51% #38 5
Prev: #33
1.2 no change no change
P
S
236,450 $17,934,733 2025 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
GH
GUARDANT HEALTH...
Healthcare 0.49% 0.28% #39 25
Prev: #64
0.7 4,970 3.1%
P
S
165,043 $16,857,492 2019 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
ADI
ANALOG DEVICES ...
Technology 0.49% 0.41% #40 3
Prev: #43
0.7 1,696 2.9%
P
S
61,172 $16,589,846 2009 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
ODFL
OLD DOMINION FR...
Industrials 0.44% #41
Prev: #—
3.7 95,730 no change
NEW
95,730 $15,010,464 2004 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
JPM
JPMORGAN CHASE ...
Financial Services 0.42% 0.47% #42 8
Prev: #34
0.7 -8,730 -16.4%
P
S
44,635 $14,382,290 2003 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
ETN
EATON CORP PLC
Industrials 0.42% 0.45% #43 6
Prev: #37
0.7 1,462 3.4%
P
S
44,514 $14,178,154 2023 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
ASND
ASCENDIS PHARMA...
Healthcare 0.42% 0.24% #44 37
Prev: #81
3.2 23,680 55.5%
P
S
66,336 $14,145,489 2019 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
MS
MORGAN STANLEY
Financial Services 0.41% 0.40% #45 3
Prev: #48
0.7 -10,770 -11.9%
P
S
79,470 $14,108,309 2004 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
IGIB
ISHARES TR
ETF 0.41% 0.39% #46 4
Prev: #50
1.2 no change no change
P
S
259,994 $14,008,477 2024 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
TJX
TJX COS INC NEW
Consumer Cyclical 0.41% 0.31% #47 10
Prev: #57
2.2 13,680 17.8%
P
S
90,620 $13,920,138 2007 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
C
CITIGROUP INC
Financial Services 0.40% 0.22% #48 42
Prev: #90
3.2 39,520 50.7%
P
S
117,464 $13,706,874 1999 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
DY
DYCOM INDS INC
Industrials 0.38% 0.25% #49 27
Prev: #76
2.7 8,140 27.1%
P
S
38,166 $12,896,291 2011 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
TSLA
TESLA INC
Consumer Cyclical 0.37% 0.03% #50 166
Prev: #216
3.1 25,300 903.6%
P
S
28,100 $12,637,132 2017 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
Showing 1-50 of 347 holdings

Unlock Full CASTLEARK MANAGEMENT LLC Analysis

PRO subscribers get access to all historical quarters, Excel/CSV exports, Portfolio Concentration Analytics (PCA), and Risk-Based ENB.

Full Historical Quarters
Excel & CSV Export
PCA & Risk-Based ENB
Auto Cost Basis
Position Change Alerts
Price-Held Analytics