Filed: 5/15/2026ACC: 0001106832-26-000003
📋 What this filing means
CASTLEARK MANAGEMENT LLC filed this quarterly 13F‑HR report disclosing 292 equity positions with a total reported market value of $3.02B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
292
Positions
$3.02B
Total AUM (reported)
34.27M
Total Shares
Allocation by class
COM$1.77B58.7%
CL A$165.76M5.5%
STATE STREET SPD$147.67M4.9%
COM NEW$133.83M4.4%
CAP STK CL A$120.21M4.0%
COM CL A$119.54M4.0%
COM SHS$82.04M2.7%
Portfolio Concentration
Top 3$437.37M14.5%
4–10$535.59M17.7%
11–25$617.41M20.4%
Rest$1.43B47.4%
Top 3 weight
14.5%
Top 10 weight
32.2%
Voting Authority Distribution
Total shares with voting rights: 34.27M
Sole
Full voting authority
34.27M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole292
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings292
Rows:
NVIDIA CORPORATION
SOLEShares1.26M
TypeSH
Market value$219.40M
7.26%
Sole
1.26M
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares418.02K
TypeSH
Market value$120.21M
3.98%
Sole
418.02K
Shared
0.00
None
0.00
MICROSOFT CORP
SOLEShares264.10K
TypeSH
Market value$97.76M
3.23%
Sole
264.10K
Shared
0.00
None
0.00
SPDR SERIES TRUST
SOLEShares2.69M
TypeSH
Market value$90.17M
2.98%
Sole
2.69M
Shared
0.00
None
0.00
APPLE INC
SOLEShares350.01K
TypeSH
Market value$88.83M
2.94%
Sole
350.01K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares3.33M
TypeSH
Market value$76.28M
2.52%
Sole
3.33M
Shared
0.00
None
0.00
LAM RESEARCH CORP
SOLEShares336.74K
TypeSH
Market value$71.95M
2.38%
Sole
336.74K
Shared
0.00
None
0.00
META PLATFORMS INC
SOLEShares123.97K
TypeSH
Market value$70.92M
2.35%
Sole
123.97K
Shared
0.00
None
0.00
VANGUARD SCOTTSDALE FDS
SOLEShares1.49M
TypeSH
Market value$69.85M
2.31%
Sole
1.49M
Shared
0.00
None
0.00
ELI LILLY & CO
SOLEShares73.48K
TypeSH
Market value$67.58M
2.24%
Sole
73.48K
Shared
0.00
None
0.00
BROADCOM INC
SOLEShares202.70K
TypeSH
Market value$62.74M
2.08%
Sole
202.70K
Shared
0.00
None
0.00
ARISTA NETWORKS INC
SOLEShares430.94K
TypeSH
Market value$52.91M
1.75%
Sole
430.94K
Shared
0.00
None
0.00
AMAZON COM INC
SOLEShares245.86K
TypeSH
Market value$51.21M
1.69%
Sole
245.86K
Shared
0.00
None
0.00
GILEAD SCIENCES INC
SOLEShares342.15K
TypeSH
Market value$47.69M
1.58%
Sole
342.15K
Shared
0.00
None
0.00
SCHWAB CHARLES CORP
SOLEShares504.05K
TypeSH
Market value$47.37M
1.57%
Sole
504.05K
Shared
0.00
None
0.00
VISA INC
SOLEShares153.83K
TypeSH
Market value$46.49M
1.54%
Sole
153.83K
Shared
0.00
None
0.00
MASTERCARD INCORPORATED
SOLEShares92.01K
TypeSH
Market value$45.98M
1.52%
Sole
92.01K
Shared
0.00
None
0.00
SPDR SERIES TRUST
SOLEShares1.33M
TypeSH
Market value$38.93M
1.29%
Sole
1.33M
Shared
0.00
None
0.00
SHOPIFY INC
SOLEShares310.59K
TypeSH
Market value$36.84M
1.22%
Sole
310.59K
Shared
0.00
None
0.00
GE VERNOVA INC
SOLEShares41.49K
TypeSH
Market value$36.22M
1.20%
Sole
41.49K
Shared
0.00
None
0.00
VANGUARD SCOTTSDALE FDS
SOLEShares448.33K
TypeSH
Market value$33.50M
1.11%
Sole
448.33K
Shared
0.00
None
0.00
SERVICENOW INC
SOLEShares303.76K
TypeSH
Market value$31.76M
1.05%
Sole
303.76K
Shared
0.00
None
0.00
TAPESTRY INC
SOLEShares204.47K
TypeSH
Market value$28.85M
0.95%
Sole
204.47K
Shared
0.00
None
0.00
DIAMONDBACK ENERGY INC
SOLEShares145.02K
TypeSH
Market value$28.68M
0.95%
Sole
145.02K
Shared
0.00
None
0.00
CHEVRON CORPORATION
SOLEShares136.55K
TypeSH
Market value$28.25M
0.93%
Sole
136.55K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
NVIDIA CORPORATIONSOLE | COM | 1.26M | SH | $219.40M 7.26% | 1.26M | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL A | 418.02K | SH | $120.21M 3.98% | 418.02K | 0.00 | 0.00 |
MICROSOFT CORPSOLE | COM | 264.10K | SH | $97.76M 3.23% | 264.10K | 0.00 | 0.00 |
SPDR SERIES TRUSTSOLE | STATE STREET SPD | 2.69M | SH | $90.17M 2.98% | 2.69M | 0.00 | 0.00 |
APPLE INCSOLE | COM | 350.01K | SH | $88.83M 2.94% | 350.01K | 0.00 | 0.00 |
ISHARES TRSOLE | US TREAS BD ETF | 3.33M | SH | $76.28M 2.52% | 3.33M | 0.00 | 0.00 |
LAM RESEARCH CORPSOLE | COM NEW | 336.74K | SH | $71.95M 2.38% | 336.74K | 0.00 | 0.00 |
META PLATFORMS INCSOLE | CL A | 123.97K | SH | $70.92M 2.35% | 123.97K | 0.00 | 0.00 |
VANGUARD SCOTTSDALE FDSSOLE | MTG-BKD SECS ETF | 1.49M | SH | $69.85M 2.31% | 1.49M | 0.00 | 0.00 |
ELI LILLY & COSOLE | COM | 73.48K | SH | $67.58M 2.24% | 73.48K | 0.00 | 0.00 |
BROADCOM INCSOLE | COM | 202.70K | SH | $62.74M 2.08% | 202.70K | 0.00 | 0.00 |
ARISTA NETWORKS INCSOLE | COM SHS | 430.94K | SH | $52.91M 1.75% | 430.94K | 0.00 | 0.00 |
AMAZON COM INCSOLE | COM | 245.86K | SH | $51.21M 1.69% | 245.86K | 0.00 | 0.00 |
GILEAD SCIENCES INCSOLE | COM | 342.15K | SH | $47.69M 1.58% | 342.15K | 0.00 | 0.00 |
SCHWAB CHARLES CORPSOLE | COM | 504.05K | SH | $47.37M 1.57% | 504.05K | 0.00 | 0.00 |
VISA INCSOLE | COM CL A | 153.83K | SH | $46.49M 1.54% | 153.83K | 0.00 | 0.00 |
MASTERCARD INCORPORATEDSOLE | CL A | 92.01K | SH | $45.98M 1.52% | 92.01K | 0.00 | 0.00 |
SPDR SERIES TRUSTSOLE | STATE STREET SPD | 1.33M | SH | $38.93M 1.29% | 1.33M | 0.00 | 0.00 |
SHOPIFY INCSOLE | CL A SUB VTG SHS | 310.59K | SH | $36.84M 1.22% | 310.59K | 0.00 | 0.00 |
GE VERNOVA INCSOLE | COM | 41.49K | SH | $36.22M 1.20% | 41.49K | 0.00 | 0.00 |
VANGUARD SCOTTSDALE FDSSOLE | LG-TERM COR BD | 448.33K | SH | $33.50M 1.11% | 448.33K | 0.00 | 0.00 |
SERVICENOW INCSOLE | COM | 303.76K | SH | $31.76M 1.05% | 303.76K | 0.00 | 0.00 |
TAPESTRY INCSOLE | COM | 204.47K | SH | $28.85M 0.95% | 204.47K | 0.00 | 0.00 |
DIAMONDBACK ENERGY INCSOLE | COM | 145.02K | SH | $28.68M 0.95% | 145.02K | 0.00 | 0.00 |
CHEVRON CORPORATIONSOLE | COM | 136.55K | SH | $28.25M 0.93% | 136.55K | 0.00 | 0.00 |
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