§ 13F · FUND PROFILE
CASTLEARK MANAGEMENT LLC.
Institutional filer · behavioral pattern: Other. Summary pending.
AUM · $3.3B (13F)Positions · 275Turnover · — · Q1Filed · May 15, 2026
CONCENTRATION
—
Top 10 holdings
NEW BUYS
0
+$345M deployed
EXITS
0
No exits
SECTOR SHIFT
—
No prior quarter data
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q1 2026
FILED MAY 15, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q1 |
|---|---|---|---|---|---|---|
| 1 | NVDA | NVIDIA CORPORATION | 1.26M | $219M | 7.3% | −11% |
| 2 | GOOGL | ALPHABET INC | 418K | $120M | 4.0% | +10% |
| 3 | MSFT | MICROSOFT CORP | 264K | $98M | 3.2% | −29% |
| 4 | SPIB | SPDR SERIES TRUST | 2.69M | $90M | 3.0% | +7% |
| 5 | AAPL | APPLE INC | 350K | $89M | 2.9% | −10% |
| 6 | GOVT | ISHARES TR | 3.33M | $76M | 2.5% | ±0% |
| 7 | LRCX | LAM RESEARCH CORP | 337K | $72M | 2.4% | −10% |
| 8 | META | META PLATFORMS INC | 124K | $71M | 2.3% | +1% |
| 9 | VMBS | VANGUARD SCOTTSDALE FDS | 1.49M | $70M | 2.3% | −13% |
| 10 | LLY | ELI LILLY & CO | 73K | $68M | 2.2% | −10% |
§ 02 · SECTOR ALLOCATION
Where the money is
Sector data pending
§ 03 · THE CASTLEARK SIGNAL
AC read
CASTLEARK MANAGEMENT LLC is a Other fund managing $3.3 billion in assets. The fund runs a broad portfolio of 275 positions.
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
1 FILINGS
Q1 2026
Steady book
+0 buys · −0 exits · 0 changed
Q4 2025
Steady book
+0 buys · −0 exits · 0 changed
Q2 2025
Steady book
+0 buys · −0 exits · 0 changed
Q1 2025
Steady book
+0 buys · −0 exits · 0 changed