CASTLEARK MANAGEMENT LLC

CHICAGO, IL · CIK 1106832 · 13F filing filed 2026-08-14

SEC-registered investment adviser since 1999 · limited liability company

Assets managed$4.6bn
Staff28 · 18 in investment roles
Main clients (by assets)State and local governments 59%, Pension plans 25%, Private funds 8%
Websitecastleark.com
Form ADV · 2026-04-01SEC adviser record

Legal entityCastleArk Management, LLC (US)

Kindinstitutions
Others nearbyChicago, IL

$3.7bn reported value +22.7% vs Q1 2026

309positions

33.9%in top 10

59 new 69 added 88 reduced 42 sold out vs Q1 2026

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#	Security	Ticker	Shares	Value	% of portfolio	Change	Shares change
1	NVIDIA CORPORATION COM NVDA	NVDA	1,299,605	$260.0m7.01%	7.01%	Added +41.6k	+41,593 3.3%
2	ALPHABET INC CAP STK CL A GOOGL	GOOGL	507,093	$181.2m4.89%	4.89%	Added +89.1k	+89,074 21.3%
3	APPLE INC COM AAPL	AAPL	472,108	$136.6m3.68%	3.68%	Added +122.1k	+122,097 34.9%
4	LAM RESEARCH CORP COM NEW LRCX	LRCX	283,808	$123.0m3.32%	3.32%	Reduced -52.9k	-52,932 -15.7%
5	MICROSOFT CORP COM MSFT	MSFT	292,770	$109.2m2.94%	2.94%	Added +28.7k	+28,668 10.8%
6	ELI LILLY & CO COM LLY	LLY	87,697	$105.2m2.84%	2.84%	Added +14.2k	+14,219 19.4%
7	BROADCOM INC COM AVGO	AVGO	243,896	$92.1m2.48%	2.48%	Added +41.2k	+41,192 20.3%
8	SPDR SER TR PORTFOLIO INTRMD SPIB	SPIB	2,688,380	$90.0m2.43%	2.43%	Unchanged
9	VISA INC COM CL A V	V	236,166	$81.0m2.18%	2.18%	Added +82.3k	+82,340 53.5%
10	ARISTA NETWORKS INC COM SHS ANET	ANET	473,319	$80.4m2.17%	2.17%	Added +42.4k	+42,384 9.8%
11	ISHARES TR US TREAS BD ETF GOVT	GOVT	3,329,569	$75.8m2.04%	2.04%	Unchanged
12	VANGUARD SCOTTSDALE FDS MTG-BKD SECS ETF VMBS	VMBS	1,487,800	$69.6m1.88%	1.88%	Unchanged
13	ADVANCED MICRO DEVICES INC COM AMD	AMD	118,865	$69.0m1.86%	1.86%	Added +29.9k	+29,911 33.6%
14	GILEAD SCIENCES INC COM GILD	GILD	527,542	$66.6m1.80%	1.80%	Added +185.4k	+185,392 54.2%
15	AMAZON COM INC COM AMZN	AMZN	268,249	$63.9m1.72%	1.72%	Added +22.4k	+22,388 9.1%
16	GE VERNOVA INC COM GEV	GEV	46,101	$54.2m1.46%	1.46%	Added +4.6k	+4,612 11.1%
17	META PLATFORMS INC CL A META	META	93,744	$52.8m1.42%	1.42%	Reduced -30.2k	-30,221 -24.4%
18	ANALOG DEVICES INC COM ADI	ADI	120,934	$48.0m1.29%	1.29%	Added +43.0k	+43,026 55.2%
19	MASTERCARD INCORPORATED CL A MA	MA	91,462	$47.0m1.27%	1.27%	Reduced -551	-551 -0.6%
20	MORGAN STANLEY COM NEW MS	MS	208,542	$43.6m1.18%	1.18%	Added +184.9k	+184,862 780.7%
21	SNOWFLAKE INC CL A SNOW	SNOW	166,818	$42.5m1.14%	1.14%	Added +30.8k	+30,774 22.6%
22	VERTIV HOLDINGS CO COM CL A VRT	VRT	123,901	$41.5m1.12%	1.12%	Added +11.5k	+11,538 10.3%
23	TAPESTRY INC COM TPR	TPR	265,749	$38.9m1.05%	1.05%	Added +61.3k	+61,279 30.0%
24	SPDR SER TR PORTFOLIO SH TSR SPTS	SPTS	1,334,080	$38.7m1.04%	1.04%	Unchanged
25	VANGUARD SCOTTSDALE FDS LG-TERM COR BD VCLT	VCLT	448,330	$33.7m0.91%	0.91%	Unchanged
26	SERVICENOW INC COM NOW	NOW	321,623	$31.9m0.86%	0.86%	Added +17.9k	+17,867 5.9%
27	ISHARES TR 10-20 YR TRS ETF TLH	TLH	258,432	$25.9m0.70%	0.70%	Unchanged
28	BOOKING HOLDINGS INC COM BKNG	BKNG	136,776	$24.4m0.66%	0.66%	Added +14.4k	+14,376 11.8%
29	MOODYS CORP COM MCO	MCO	53,444	$24.2m0.65%	0.65%	Added +36.5k	+36,544 216.2%
30	TESLA INC COM TSLA	TSLA	48,070	$20.2m0.55%	0.55%	Added +8.9k	+8,890 22.7%
31	CATERPILLAR INC COM CAT	CAT	18,980	$20.2m0.54%	0.54%	Added +5.1k	+5,060 36.4%
32	GE AEROSPACE COM NEW GE	GE	52,830	$19.7m0.53%	0.53%	Added +22.1k	+22,150 72.2%
33	TAIWAN SEMICONDUCTOR MFG LTD SPONSORED ADS TSM	TSM	41,210	$19.7m0.53%	0.53%	Unchanged
34	LIGAND PHARMACEUTICALS INC COM NEW LGND	LGND	62,043	$19.6m0.53%	0.53%	Added +13.3k	+13,347 27.4%
35	SHARKNINJA INC COM SHS SN	SN	127,170	$19.4m0.52%	0.52%	New
36	ISHARES TR MBS ETF MBB	MBB	204,235	$19.3m0.52%	0.52%	Unchanged
37	TWILIO INC CL A TWLO	TWLO	92,390	$19.1m0.51%	0.51%	Added +65.6k	+65,630 245.2%
38	BAKER HUGHES COMPANY CL A BKR	BKR	330,020	$18.3m0.49%	0.49%	Reduced -57.2k	-57,170 -14.8%
39	GARRETT MOTION INC COM GTX	GTX	469,470	$17.0m0.46%	0.46%	Reduced -18.5k	-18,530 -3.8%
40	JPMORGAN CHASE & CO COM JPM	JPM	50,525	$16.5m0.45%	0.45%	Unchanged
41	ASCENDIS PHARMA A/S ORD SHS ASND	ASND	61,696	$16.5m0.44%	0.44%	New
42	HUNT J B TRANS SVCS INC COM JBHT	JBHT	56,520	$16.4m0.44%	0.44%	Added +33.9k	+33,920 150.1%
43	DIAMONDBACK ENERGY INC COM FANG	FANG	90,680	$15.9m0.43%	0.43%	Reduced -54.3k	-54,340 -37.5%
44	GENERAL MTRS CO COM GM	GM	199,440	$15.4m0.41%	0.41%	Added +100.2k	+100,160 100.9%
45	BRIGHTSPRING HEALTH SVCS INC COM BTSG	BTSG	212,430	$14.8m0.40%	0.40%	Reduced -34.8k	-34,770 -14.1%
46	SEMTECH CORP COM SMTC	SMTC	91,218	$14.8m0.40%	0.40%	Reduced -16.5k	-16,540 -15.3%
47	FIRSTCASH HOLDINGS INC COM FCFS	FCFS	68,190	$14.8m0.40%	0.40%	Reduced -2.5k	-2,540 -3.6%
48	MARRIOTT INTL INC NEW CL A MAR	MAR	37,910	$14.0m0.38%	0.38%	Added +29.6k	+29,550 353.5%
49	ISHARES TR ISHS 5-10YR INVT IGIB	IGIB	259,994	$13.8m0.37%	0.37%	Unchanged
50	TJX COS INC NEW COM TJX	TJX	90,620	$13.7m0.37%	0.37%	Unchanged
51	UBER TECHNOLOGIES INC COM UBER	UBER	189,417	$13.7m0.37%	0.37%	Added +19.5k	+19,541 11.5%
52	ULTRA CLEAN HLDGS INC COM UCTT	UCTT	95,770	$13.7m0.37%	0.37%	Reduced -4.4k	-4,360 -4.3%
53	NOVANTA INC COM NOVT	NOVT	83,190	$13.5m0.36%	0.36%	Added +48.2k	+48,200 137.8%
54	AXON ENTERPRISE INC COM AXON	AXON	23,423	$13.1m0.35%	0.35%	Added +14.6k	+14,562 164.3%
55	BOEING CO COM BA	BA	59,520	$12.9m0.35%	0.35%	Added +33.4k	+33,440 128.2%
56	SPDR SER TR S&P BIOTECH XBI	XBI	80,890	$12.8m0.35%	0.35%	Unchanged
57	ELEMENT SOLUTIONS INC COM ESI	ESI	263,644	$12.6m0.34%	0.34%	Reduced -10.2k	-10,240 -3.7%
58	MYR GROUP INC DEL COM MYRG	MYRG	24,920	$12.5m0.34%	0.34%	Added +7.4k	+7,360 41.9%
59	GUARDANT HEALTH INC COM GH	GH	80,293	$12.0m0.32%	0.32%	Reduced -80.0k	-79,990 -49.9%
60	ISHARES TR 20 YR TR BD ETF TLT	TLT	137,270	$11.9m0.32%	0.32%	Unchanged
61	JFROG LTD ORD SHS FROG	FROG	129,480	$11.8m0.32%	0.32%	Added +36.6k	+36,650 39.5%
62	CITIGROUP INC COM NEW C	C	83,734	$11.7m0.32%	0.32%	Added +36.2k	+36,250 76.3%
63	XPO INC COM XPO	XPO	57,079	$11.7m0.32%	0.32%	Added +31.2k	+31,230 120.8%
64	KULICKE & SOFFA INDS INC COM KLIC	KLIC	86,950	$11.6m0.31%	0.31%	Reduced -19.4k	-19,430 -18.3%
65	HEALTHEQUITY INC COM HQY	HQY	127,770	$11.5m0.31%	0.31%	Added +79.3k	+79,260 163.4%
66	XOMETRY INC CLASS A COM XMTR	XMTR	117,518	$11.3m0.31%	0.31%	Added +62.8k	+62,750 114.6%
67	LATTICE SEMICONDUCTOR CORP COM LSCC	LSCC	73,979	$11.3m0.31%	0.31%	Reduced -17.7k	-17,660 -19.3%
68	JAZZ PHARMACEUTICALS PLC SHS USD JAZZ	JAZZ	46,920	$11.3m0.30%	0.30%	Reduced -1.8k	-1,820 -3.7%
69	HELIOS TECHNOLOGIES INC COM HLIO	HLIO	125,409	$11.2m0.30%	0.30%	Reduced -35.0k	-35,000 -21.8%
70	KINIKSA PHARMACEUTICALS INTL ORD SHS CL A KNSA	KNSA	174,032	$11.1m0.30%	0.30%	Reduced -7.5k	-7,480 -4.1%
71	ESCO TECHNOLOGIES INC COM ESE	ESE	31,572	$11.1m0.30%	0.30%	Added +13.7k	+13,720 76.8%
72	VSE CORP COM VSEC	VSEC	48,216	$11.0m0.30%	0.30%	Reduced -1.9k	-1,870 -3.7%
73	TIMKEN CO COM TKR	TKR	75,400	$11.0m0.30%	0.30%	Added +35.0k	+35,010 86.7%
74	HEXCEL CORP NEW COM HXL	HXL	106,050	$10.6m0.29%	0.29%	New
75	BORGWARNER INC COM BWA	BWA	158,726	$10.5m0.28%	0.28%	Added +10.2k	+10,220 6.9%
76	AAR CORP COM AIR	AIR	73,664	$10.5m0.28%	0.28%	Added +13.4k	+13,400 22.2%
77	WALMART INC COM WMT	WMT	91,570	$10.4m0.28%	0.28%	Reduced -21.7k	-21,700 -19.2%
78	CROCS INC COM CROX	CROX	85,810	$10.4m0.28%	0.28%	New
79	EQT CORP COM EQT	EQT	193,845	$10.3m0.28%	0.28%	Unchanged
80	SENSIENT TECHNOLOGIES CORP COM SXT	SXT	82,920	$10.2m0.28%	0.28%	New
81	MAXLINEAR INC COM MXL	MXL	79,780	$10.2m0.28%	0.28%	New
82	SOLARIS ENERGY INFRAS INC COM CL A SEI	SEI	125,806	$10.1m0.27%	0.27%	Added +31.6k	+31,550 33.5%
83	EVERCORE INC CLASS A EVR	EVR	29,266	$10.0m0.27%	0.27%	Reduced -1.1k	-1,150 -3.8%
84	SHOPIFY INC CL A SUB VTG SHS SHOP	SHOP	87,164	$10.0m0.27%	0.27%	Reduced -223.4k	-223,426 -71.9%
85	ALLEGRO MICROSYSTEMS INC COM ALGM	ALGM	141,900	$9.9m0.27%	0.27%	Reduced -5.5k	-5,520 -3.7%
86	UL SOLUTIONS INC CLASS A COM SHS ULS	ULS	96,780	$9.9m0.27%	0.27%	New
87	WILLIAMS COS INC COM WMB	WMB	131,770	$9.8m0.26%	0.26%	Unchanged
88	CASELLA WASTE SYS INC CL A CWST	CWST	100,460	$9.7m0.26%	0.26%	New
89	CARDINAL INFRASTRUCTURE GROU CL A CDNL	CDNL	103,023	$9.7m0.26%	0.26%	New
90	SOLSTICE ADVANCED MATLS INC COM SHS SOLS	SOLS	108,980	$9.7m0.26%	0.26%	Reduced -4.1k	-4,070 -3.6%
91	DYCOM INDS INC COM DY	DY	18,816	$9.5m0.26%	0.26%	Reduced -13.7k	-13,690 -42.1%
92	RALLIANT CORP COM RAL	RAL	128,740	$9.5m0.26%	0.26%	New
93	WESCO INTL INC COM WCC	WCC	27,347	$9.4m0.25%	0.25%	Reduced -1.1k	-1,050 -3.7%
94	WILLSCOT HLDGS CORP COM CL A WSC	WSC	325,950	$9.4m0.25%	0.25%	New
95	KNIGHT-SWIFT TRANSN HLDGS IN CL A KNX	KNX	120,560	$9.4m0.25%	0.25%	Reduced -5.5k	-5,470 -4.3%
96	LIFE TIME GROUP HOLDINGS INC COMMON STOCK LTH	LTH	229,298	$9.4m0.25%	0.25%	New
97	COGNEX CORP COM CGNX	CGNX	128,730	$9.3m0.25%	0.25%	Added +18.5k	+18,490 16.8%
98	AMERICAN EXPRESS CO COM AXP	AXP	27,295	$9.2m0.25%	0.25%	Added +24.6k	+24,620 920.4%
99	ASSOCIATED BANC CORP COM ASB	ASB	299,403	$9.2m0.25%	0.25%	Reduced -12.0k	-12,020 -3.9%
100	BROOKDALE SR LIVING INC COM BKD	BKD	570,084	$9.2m0.25%	0.25%	Reduced -28.4k	-28,370 -4.7%

Sold out since Q1 2026

Security	Ticker	Shares held before	Value then
ULTA BEAUTY INC ULTA	ULTA	50,629	$26.5m50.6k shares
ASCENDIS PHARMA A/S		67,616	$15.5m67.6k shares
FIVE BELOW INC FIVE	FIVE	40,110	$9.2m40.1k shares
TUTOR PERINI CORP TPC	TPC	116,440	$9.0m116.4k shares
HASBRO INC HAS	HAS	94,701	$8.9m94.7k shares
SPX TECHNOLOGIES INC SPXC	SPXC	41,567	$8.3m41.6k shares
PHIBRO ANIMAL HEALTH CORP PAHC	PAHC	142,900	$7.9m142.9k shares
KRATOS DEFENSE & SEC SOLUTIO KTOS	KTOS	109,634	$7.7m109.6k shares
AUTODESK INC ADSK	ADSK	31,940	$7.6m31.9k shares
IPG PHOTONICS CORP IPGP	IPGP	60,456	$6.9m60.5k shares
PATRICK INDS INC PATK	PATK	62,180	$6.9m62.2k shares
ATMUS FILTRATION TECHNOLOGIE ATMU	ATMU	119,350	$6.8m119.3k shares
SIMPSON MFG INC SSD	SSD	38,382	$6.6m38.4k shares
CHURCHILL DOWNS INC CHDN	CHDN	67,810	$6.1m67.8k shares
INTERDIGITAL INC IDCC	IDCC	19,876	$6.0m19.9k shares
ONTO INNOVATION INC ONTO	ONTO	29,030	$6.0m29.0k shares
FASTLY INC FSLY	FSLY	177,688	$5.2m177.7k shares
MEDPACE HLDGS INC MEDP	MEDP	10,030	$4.8m10.0k shares
RHYTHM PHARMACEUTICALS INC RYTM	RYTM	52,279	$4.5m52.3k shares
FORD MTR CO F	F	380,230	$4.4m380.2k shares
MANHATTAN ASSOCIATES INC MANH	MANH	30,580	$4.1m30.6k shares
IQVIA HLDGS INC IQV	IQV	22,580	$3.9m22.6k shares
BEL FUSE INC BELFB	BELFB	16,311	$3.2m16.3k shares
IRHYTHM TECHNOLOGIES INC IRTC	IRTC	27,193	$3.2m27.2k shares
COINBASE GLOBAL INC COIN	COIN	17,630	$3.1m17.6k shares