CASTLEARK MANAGEMENT LLC

Est. AUM

$3.02B

13F long equity, this entity only

Positions

292

Period

Mar 2026 (Q1)

SEC EDGAR

View filings ↗

Mar 2026 (Q1)

#	Issuer	Class	Value	Shares	% Portfolio	Discretion
1	NVIDIA CORPORATION	COM	$219.4M	1258012	7.26%	SOLE
2	ALPHABET INC	CAP STK CL A	$120.2M	418019	3.98%	SOLE
3	MICROSOFT CORP	COM	$97.8M	264102	3.23%	SOLE
4	SPDR SERIES TRUST	STATE STREET SPD	$90.2M	2688380	2.98%	SOLE
5	APPLE INC	COM	$88.8M	350011	2.94%	SOLE
6	ISHARES TR	US TREAS BD ETF	$76.3M	3329569	2.52%	SOLE
7	LAM RESEARCH CORP	COM NEW	$71.9M	336740	2.38%	SOLE
8	META PLATFORMS INC	CL A	$70.9M	123965	2.35%	SOLE
9	VANGUARD SCOTTSDALE FDS	MTG-BKD SECS ETF	$69.9M	1487800	2.31%	SOLE
10	ELI LILLY & CO	COM	$67.6M	73478	2.24%	SOLE
11	BROADCOM INC	COM	$62.7M	202704	2.08%	SOLE
12	ARISTA NETWORKS INC	COM SHS	$52.9M	430935	1.75%	SOLE
13	AMAZON COM INC	COM	$51.2M	245861	1.69%	SOLE
14	GILEAD SCIENCES INC	COM	$47.7M	342150	1.58%	SOLE
15	SCHWAB CHARLES CORP	COM	$47.4M	504053	1.57%	SOLE
16	VISA INC	COM CL A	$46.5M	153826	1.54%	SOLE
17	MASTERCARD INCORPORATED	CL A	$46.0M	92013	1.52%	SOLE
18	SPDR SERIES TRUST	STATE STREET SPD	$38.9M	1334080	1.29%	SOLE
19	SHOPIFY INC	CL A SUB VTG SHS	$36.8M	310590	1.22%	SOLE
20	GE VERNOVA INC	COM	$36.2M	41489	1.20%	SOLE
21	VANGUARD SCOTTSDALE FDS	LG-TERM COR BD	$33.5M	448330	1.11%	SOLE
22	SERVICENOW INC	COM	$31.8M	303756	1.05%	SOLE
23	TAPESTRY INC	COM	$28.9M	204470	0.95%	SOLE
24	DIAMONDBACK ENERGY INC	COM	$28.7M	145020	0.95%	SOLE
25	CHEVRON CORPORATION	COM	$28.3M	136550	0.93%	SOLE
26	VERTIV HOLDINGS CO	COM CL A	$28.2M	112363	0.93%	SOLE
27	ULTA BEAUTY INC	COM	$26.5M	50629	0.88%	SOLE
28	ISHARES TR	10-20 YR TRS ETF	$26.0M	258432	0.86%	SOLE
29	ANALOG DEVICES INC	COM	$24.8M	77908	0.82%	SOLE
30	BAKER HUGHES COMPANY	CL A	$23.6M	387190	0.78%	SOLE
31	BOOKING HOLDINGS INC	COM	$20.6M	4896	0.68%	SOLE
32	SNOWFLAKE INC	COM SHS	$20.5M	136044	0.68%	SOLE
33	ISHARES TR	MBS ETF	$19.4M	204235	0.64%	SOLE
34	RANGE RES CORP	COM	$18.5M	410520	0.61%	SOLE
35	ADVANCED MICRO DEVICES INC	COM	$18.1M	88954	0.60%	SOLE
36	CF INDUSTRIES HOLD	COM	$16.8M	129150	0.55%	SOLE
37	DIGITALOCEAN HLDGS INC	COM	$15.6M	182249	0.52%	SOLE
38	ASCENDIS PHARMA A/S	SPONSORED ADR	$15.5M	67616	0.51%	SOLE
39	ADVANCED ENERGY INDS	COM	$15.0M	46623	0.50%	SOLE
40	JPMORGAN CHASE & CO	COM	$14.9M	50525	0.49%	SOLE
41	GUARDANT HEALTH INC	COM	$14.8M	160283	0.49%	SOLE
42	TESLA INC	COM	$14.6M	39180	0.48%	SOLE
43	TJX COS INC NEW	COM	$14.5M	90620	0.48%	SOLE
44	WALMART INC	COM	$14.1M	113270	0.47%	SOLE
45	TAIWAN SEMICONDUCTOR MANUFAC	SPONSORED ADS	$13.9M	41210	0.46%	SOLE
46	ISHARES TR	ISHS 5-10YR INVT	$13.8M	259994	0.46%	SOLE
47	NEXTPOWER INC	CLASS A COM	$13.8M	114074	0.46%	SOLE
48	PERMIAN RESOURCES CORP	CLASS A COM	$13.5M	630980	0.45%	SOLE
49	FIRSTCASH HOLDINGS INC	COM	$13.3M	70730	0.44%	SOLE
50	MICROCHIP TECHNOLOGY INC.	COM	$13.2M	204874	0.44%	SOLE

1–50 of 292

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Values in USD (reported in $thousands on 13F). Source: SEC EDGAR.