Castleark Management
Castleark Management reported 309 stocks worth $3.7B in its 13F filing for Q2 2026, filed Aug 14, 2026. Its largest holdings are NVDA (7.0%), GOOGL (4.9%) and AAPL (3.7%). Compared with Q1 2026, the fund opened new positions in SN, ASND and HXL, added to NVDA, GOOGL and AAPL, trimmed LRCX, META and MA and sold out of ULTA, ASND and FIVE.
Holdings
| # | Stock | Value | Weight | Shares | Change | Shares, 8 qtrs | Held |
|---|---|---|---|---|---|---|---|
| 1 |  NVDA Nvidia Corporation | $260M | 7.0% | 1.3M | +42K (+3%) | 8 of 8 | |
| 2 |  GOOGL Alphabet Inc | $181M | 4.9% | 507K | +89K (+21%) | 8 of 8 | |
| 3 |  AAPL Apple Inc | $137M | 3.7% | 472K | +122K (+35%) | 8 of 8 | |
| 4 |  LRCX Lam Research Corp | $123M | 3.3% | 284K | −53K (−16%) | 7 of 8 | |
| 5 |  MSFT Microsoft Corp | $109M | 2.9% | 293K | +29K (+11%) | 8 of 8 | |
| 6 |  LLY Eli Lilly & Co | $105M | 2.8% | 88K | +14K (+19%) | 8 of 8 | |
| 7 |  AVGO Broadcom Inc | $92.1M | 2.5% | 244K | +41K (+20%) | 6 of 8 | |
| 8 |  SPIB Spdr Series Trust | $90M | 2.4% | 2.7M | No change | 7 of 8 | |
| 9 |  V Visa Inc | $81M | 2.2% | 236K | +82K (+54%) | 8 of 8 | |
| 10 |  ANET Arista Networks Inc | $80.4M | 2.2% | 473K | +42K (+10%) | 7 of 8 |
Positions at Jun 30, 2026, as reported. Change is against the fund's Q1 2026 filing; weight is the share of the fund's reported stocks.
Sold out
held in Q1 2026, gone in Q2 2026| Stock | Value last quarter | Shares sold |
|---|---|---|
 ULTA Ulta Beauty Inc | $26.5M | 51K |
 ASND Ascendis Pharma A/s | $15.5M | 68K |
 FIVE Five Below Inc | $9.2M | 40K |
 TPC Tutor Perini Corp | $9M | 116K |
 HAS Hasbro Inc | $8.9M | 95K |
🔒 Free account: see all 30.
Reported value
last 8 quartersThe value of the US stocks the fund reported, at quarter end prices. It moves with the market as well as with buying and selling.
Filings for Q2 2026
straight from the SEC| Filed | Form | Quarter | |
|---|---|---|---|
| Aug 14, 2026 | 13F-HR | Q2 2026 | SEC filing ↗ |
Other superinvestors
All hedge fund holdings →Castleark Management 13F FAQ
What does Castleark Management own?
Castleark Management reported 309 stocks worth $3.7B in its 13F filing for Q2 2026, filed Aug 14, 2026. Its largest holdings are NVDA (7.0%), GOOGL (4.9%) and AAPL (3.7%). The table above lists every position in the filing (the top 10 without an account).
What did Castleark Management buy and sell in Q2 2026?
Compared with Q1 2026: 59 new positions, 71 added to, 88 trimmed and 42 sold out. New positions include SN, ASND and HXL. It sold all of ULTA, ASND and FIVE.
When will Castleark Management file its next 13F?
Holdings as of Sep 30, 2026 are due by Nov 16, 2026. The filing appears on this page within minutes of reaching the SEC.
How much is Castleark Management's portfolio worth?
The Q2 2026 filing reports $3.7B in US stocks. That leaves out cash, bonds, short positions and most foreign holdings, so the fund's total assets are usually larger.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Holdings come from the fund's SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. The fund may have changed its positions since. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.