13F filer

Castleark Management

As of Jun 30, 2026 Filed Aug 14, 2026 CIK 1106832 SEC filings ↗
13F Value
$3.71B
Positions
309
Top Position
NVDA7.0%
Top 5
21.8%

Latest filing changes

vs Mar 31, 2026
1 MS Morgan Stanley +780.7%+$38.6M
2 AAPL Apple +34.9%+$35.3M
3 GOOGL Alphabet Class A +21.3%+$31.8M
4 V Visa +53.5%+$28.3M
5 BKNG Booking Holdings >999%+$23.5M
Holdings309
# Trend (4Q)
1 NVDA 7.0% $260.0M +3.3% 1.30M 7.3% Common Stock
2 GOOGL
Filing details
  • 02079K305 Jun 30, 2026 507,093 reported quantity $181,219,825 reported value
4.9% $181.2M +21.3% 507.1K 4.0% Common Stock
3 AAPL 3.7% $136.6M +34.9% 472.1K 2.9% Common Stock
4 LRCX
Filing details
  • 512807306 Jun 30, 2026 283,808 reported quantity $122,982,521 reported value
3.3% $123.0M -15.7% 283.8K 2.4% Common Stock
5 MSFT 2.9% $109.2M +10.9% 292.8K 3.2% Common Stock
6 LLY 2.8% $105.2M +19.4% 87.7K 2.2% Common Stock
7 AVGO 2.5% $92.1M +20.3% 243.9K 2.1% Common Stock
8 SPIB 2.4% $90.0M — 2.69M 3.0% ETF
9 V 2.2% $81.0M +53.5% 236.2K 1.5% Common Stock
10 ANET
Filing details
  • 040413205 Jun 30, 2026 473,319 reported quantity $80,407,432 reported value
2.2% $80.4M +9.8% 473.3K 1.8% Common Stock
11 GOVT 2.0% $75.8M — 3.33M 2.5% ETF
12 VMBS 1.9% $69.6M — 1.49M 2.3% ETF
13 AMD 1.9% $69.0M +33.6% 118.9K 0.6% Common Stock
14 GILD 1.8% $66.6M +54.2% 527.5K 1.6% Common Stock
15 AMZN 1.7% $63.9M +9.1% 268.2K 1.7% Common Stock
16 GEV 1.5% $54.2M +11.1% 46.1K 1.2% Common Stock
17 META 1.4% $52.8M -24.4% 93.7K 2.3% Common Stock
18 ADI 1.3% $48.0M +55.2% 120.9K 0.8% Common Stock
19 MA 1.3% $47.0M -0.6% 91.5K 1.5% Common Stock
20 MS 1.2% $43.6M +780.7% 208.5K 0.1% Common Stock
Change compares with the prior filing. Prior % is the share of the portfolio in that filing. Trend shows the quantity held in each of the last four filings: green rose, red fell, grey unchanged.
Exited in Latest Filing41
# Holding Prior % Prior Value Change Prior Quantity Trend (4Q) Type
Compared with the immediately prior published filing (Mar 31, 2026). Prior values are shown for context and are not included in current totals.