Round Rock Advisors LLC

CIK

1846991

Location

WILTON, CT

Portfolio Value

Small $374,337,667

Diversification

Diversified

Filing Date

Global Rank

#3,334 / 8,700 ▼ 267

Top Industry

Consumer Electronics 6.8%

Period ended 2 months ago

Filed Aug 12, 2026 · 32d

23 quarters · since Dec 2020

Portfolio Concentration

232 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

16.3%

+5.0 pts

Top 5

33.3%

−7.9 pts

Top 10

41.5%

−14.8 pts

HHI

380

Diversified−49

Portfolio Trend

23 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Technology	23.1%	$86,517,624	42
Unclassified	21.6%	$80,814,322	13
Financial Services	12.5%	$46,737,949	28
Industrials	10.1%	$37,957,569	46
Healthcare	9.1%	$34,095,445	34
Communication Services	6.3%	$23,673,764	11
Consumer Cyclical	6.3%	$23,482,518	21
Energy	5.5%	$20,669,848	16
Basic Materials	2.8%	$10,560,863	9
Consumer Defensive	1.8%	$6,785,988	7
Real Estate	0.4%	$1,667,590	3
Utilities	0.4%	$1,374,187	2

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
ARQ	Arq, Inc.	+188,271	378,979	$966,396
TMS	Teamshares Inc	+140,531	277,236	$2,278,879
CERS	Cerus Corp	+90,996	355,962	$1,039,409
HZO	Marinemax Inc	+57,521	120,030	$4,395,498
FTK	Flotek Industries Inc/Cn/	+54,620	81,471	$1,916,197
EVLV	Evolv Technologies Holdings, Inc.	+28,245	99,236	$575,568
OCC	Optical Cable Corp	+27,665	58,937	$1,235,908
WYFI	WhiteFiber, Inc.	+26,981	45,386	$1,763,246
SHLS	Shoals Technologies Group, Inc.	+22,971	185,927	$1,840,677
LPTH	Lightpath Technologies Inc	+11,452	30,691	$501,797
PCT	PureCycle Technologies, Inc.	+10,000	20,000	$162,200
JOUT	Johnson Outdoors Inc	+9,453	21,438	$987,005
LIND	Lindblad Expeditions Holdings, Inc.	+7,682	39,749	$1,122,511
GRDN	Guardian Pharmacy Services, Inc.	+6,729	18,524	$775,599
AMSC	American Superconductor Corp /De/	+6,091	26,431	$1,097,150
WT	WisdomTree, Inc.	+4,984	15,062	$255,150
CDNL	Cardinal Infrastructure Group Inc.	+3,541	22,438	$2,113,659
QQQ	Invesco Qqq Trust, Series 1	+2,834	82,898	$61,046,087
OII	Oceaneering International Inc	+2,744	20,056	$812,669
KLAC	Kla Corp	+2,022	2,240	$675,830
ALNT	Allient Inc	+1,822	24,086	$2,479,171
SPY	Spdr S&P 500 ETF Trust	+1,400	10,145	$7,575,981
LPX	Louisiana-Pacific Corp	+969	5,118	$402,581
BRK-B	Berkshire Hathaway Inc	+929	4,889	$15,916,699
ABCB	Ameris Bancorp	+883	6,688	$603,658
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
VIGI	Vanguard International Dividend Appreciation ETF	−313,037	10,109	$943,978
CPSH	Cps Technologies Corp/De/	−151,571	283,951	$1,567,409
VB	Vanguard Morningstar Small-Cap ETF	−116,852	2,223	$673,835
GETY	Getty Images Holdings, Inc.	−65,863	691,771	$594,923
ARRY	Array Technologies, Inc.	−62,198	71,605	$530,593
XERS	Xeris Biopharma Holdings, Inc.	−50,714	46,102	$365,127
LBRT	Liberty Energy Inc.	−29,565	45,279	$1,185,857
BKSY	BlackSky Technology Inc.	−19,413	35,038	$978,260
PFE	Pfizer Inc	−11,946	18,270	$439,941
REX	REX AMERICAN RESOURCES Corp	−10,227	23,197	$1,047,344
IGA	Voya Global Advantage & Premium Opportunity Fund	−7,957	39,211	$388,188
ATMU	Atmus Filtration Technologies Inc.	−5,689	6,789	$346,171
CMCSA	Comcast Corp	−5,349	14,120	$346,646
HON	Honeywell International Inc	−4,492	4,480	$1,003,072
EPD	Enterprise Products Partners L.P.	−4,180	34,255	$1,259,213
LASR	Nlight, Inc.	−2,888	13,451	$936,458
LSTR	Landstar System Inc	−2,310	2,374	$490,966
NWPX	NWPX Infrastructure, Inc.	−1,841	14,625	$2,192,872
NFLX	Netflix Inc	−1,265	8,785	$627,249
WPC	W. P. Carey Inc.	−1,200	6,434	$460,031
SPOT	Spotify Technology S.A.	−1,160	1,503	$690,072
AAON	Aaon, Inc.	−1,141	4,204	$533,319
MHO	M/I Homes, Inc.	−796	1,578	$253,726
MYRG	Myr Group Inc.	−557	2,926	$1,464,170
MU	Micron Technology Inc	−548	2,909	$3,357,829
No positions match the current search.

New Positions

Positions the filer opened this quarter

21 positions

Ticker	Company	Shares	Value
IBIT	iShares Bitcoin Trust ETF	93,841	$3,123,966
TDAY	USA TODAY Co., Inc.	249,273	$2,131,284
HONA	Honeywell Aerospace Inc.	4,480	$990,438
SND	Smart Sand, Inc.	162,334	$813,293
OMDA	Omada Health, Inc.	33,932	$744,807
CGXU	Capital Group International Focus Equity ETF	17,373	$601,453
GENI	Genius Sports Ltd	98,245	$595,364
RES	Rpc Inc	100,088	$583,513
XRAY	DENTSPLY SIRONA Inc.	53,922	$572,112
FENC	Fennec Pharmaceuticals Inc.	48,683	$523,342
TUSK	Mammoth Energy Services, Inc.	152,841	$496,733
KVHI	Kvh Industries Inc \De\	36,376	$360,486
TCBK	Trico Bancshares /	6,685	$359,987
HWKN	Hawkins Inc	2,366	$336,208
OPLN	OPENLANE, Inc.	7,640	$315,073
TGTX	Tg Therapeutics, Inc.	4,964	$272,722
SAIA	Saia Inc	561	$236,270
SNDR	Schneider National, Inc.	6,401	$233,828
CSCO	Cisco Systems, Inc.	1,827	$214,599
LLY	ELI LILLY & Co	177	$212,299
—		835	$205,585
No positions match the current search.

Sold Out

Positions the filer fully exited

25 positions

Ticker	Company	Shares	Value
AAXJ	iShares MSCI All Country Asia ex Japan ETF	749,455	$70,722,375
XLBI	State Street Materials Select Sector SPDR Premium Income ETF	408,877	$47,776,987
BBAG	JPMorgan BetaBuilders U.S. Aggregate Bond ETF	924,246	$46,865,378
AFK	VanEck Africa Index ETF	94,019	$33,939,273
ACSG	American Century Small Cap Growth Insights ETF	287,522	$14,746,715
NBCE	Neuberger China Equity ETF	248,191	$12,585,765
ABI	VictoryShares Pioneer Asset-Based Income ETF	47,064	$8,979,085
IVZ	Invesco Ltd.	14,138	$3,359,471
—		19,933	$2,864,253
FNDA	Schwab Fundamental U.S. Small Company ETF	90,877	$2,789,471
BNDW	Vanguard Total World Bond ETF	27,853	$2,243,535
EZBC	Franklin Templeton Digital Holdings Trust	54,727	$2,144,751
EDV	Vanguard World Funds Extended Duration ETF	16,231	$1,797,737
TDOC	Teladoc Health, Inc.	233,868	$1,274,580
AGRH	iShares Interest Rate Hedged U.S. Aggregate Bond ETF	20,226	$1,023,840
VCHY	Vanguard U.S. High-Yield Corporate Bond Index ETF	19,727	$985,363
BWX	State Street SPDR Bloomberg International Treasury Bond ETF	9,052	$931,591
BAB	Invesco Taxable Municipal Bond ETF	12,558	$918,492
SWIM	Latham Group, Inc.	164,558	$883,676
CCLD	CareCloud, Inc.	216,388	$789,816
BKF	iShares MSCI BIC ETF	13,417	$761,951
CRMD	CorMedix Inc.	92,681	$629,303
BDTX	Black Diamond Therapeutics, Inc.	274,367	$584,401
BILZ	PIMCO Ultra Short Government Active ETF	5,986	$577,392
ARLO	Arlo Technologies, Inc.	38,355	$545,791
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

232 tracked positions · $374,337,667 total · filing declares 318 positions · $776,350,375 · as of Jun 30, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 232 positions by value · page 1 of 5

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
QQQ	Invesco Qqq Trust, Series 1	Added	82,898	+2,834	$61,046,087	+32.1%	16.31%
AAPL	Apple Inc. Technology	Reduced	66,412	-409	$19,216,976	+13.3%	5.13%
GOOGL	Alphabet Inc. Communication Services	Reduced	46,616	-172	$16,509,250	+22.9%	4.41%
BRK-B	Berkshire Hathaway Inc Financial Services	Added	4,889	+929	$15,916,699	+2.5%	4.25%
MSFT	Microsoft Corp Technology	Added	31,894	+55	$11,897,099	+0.9%	3.18%
AMZN	Amazon Com Inc Consumer Cyclical	Reduced	33,963	-114	$8,094,741	+14.1%	2.16%
SPY	Spdr S&P 500 ETF Trust	Added	10,145	+1,400	$7,575,981	+33.2%	2.02%
APH	Amphenol Corp /De/ Technology	Held	16,789	0	$5,920,472	+39.5%	1.58%
NVDA	Nvidia Corp Technology	Reduced	23,521	-254	$4,706,316	+13.5%	1.26%
ABBV	AbbVie Inc. Healthcare	Reduced	18,032	-48	$4,537,572	+15.4%	1.21%
HZO	Marinemax Inc Consumer Cyclical	Added	120,030	+57,521	$4,395,498	+159.9%	1.17%
XOM	ExxonMobil Holdings Corp Energy	Added	31,771	+111	$4,343,731	−19.1%	1.16%
UNH	Unitedhealth Group Inc Healthcare	Reduced	9,062	-295	$3,766,439	+48.8%	1.01%
MU	Micron Technology Inc Technology	Reduced	2,909	-548	$3,357,829	+187.5%	0.90%
IBM	International Business Machines Corp Technology	Added	11,577	+370	$3,255,568	+19.8%	0.87%
WMB	Williams Companies, Inc. Energy	Held	42,776	0	$3,179,967	+2.1%	0.85%
IBIT	iShares Bitcoin Trust ETF	NEW	93,841	NEW	$3,123,966	NEW	0.83%
FEIM	Frequency Electronics Inc Technology	Held	46,092	0	$3,058,204	+49.9%	0.82%
DELL	Dell Technologies Inc. Technology	Held	7,056	0	$3,044,381	+162.9%	0.81%
APD	Air Products & Chemicals, Inc. Basic Materials	Held	10,133	0	$2,970,792	+0.9%	0.79%
ICE	Intercontinental Exchange, Inc. Financial Services	Held	23,854	0	$2,936,665	−21.7%	0.78%
CB	Chubb Ltd Financial Services	Held	7,921	0	$2,699,001	+4.5%	0.72%
JNJ	Johnson & Johnson Healthcare	Added	10,503	+42	$2,667,446	+4.3%	0.71%
COF	Capital One Financial Corp Financial Services	Added	13,117	+11	$2,631,532	+10.1%	0.70%
PKE	Park Aerospace Corp Industrials	Held	67,808	0	$2,587,553	+39.4%	0.69%
C	Citigroup Inc Financial Services	Held	17,988	0	$2,517,600	+23.4%	0.67%
ALNT	Allient Inc Technology	Added	24,086	+1,822	$2,479,171	+88.4%	0.66%
TMS	Teamshares Inc Financial Services	Added	277,236	+140,531	$2,278,879	+60.3%	0.61%
CVX	Chevron Corp Energy	Held	13,353	0	$2,213,393	−19.9%	0.59%
NWPX	NWPX Infrastructure, Inc. Basic Materials	Reduced	14,625	-1,841	$2,192,872	+71.0%	0.59%
NEOG	Neogen Corp Healthcare	Added	242,211	+83	$2,177,476	−3.2%	0.58%
VIG	Vanguard Dividend Appreciation ETF	Reduced	9,107	-56	$2,154,898	+9.4%	0.58%
TDAY	USA TODAY Co., Inc. Communication Services	NEW	249,273	NEW	$2,131,284	NEW	0.57%
CDNL	Cardinal Infrastructure Group Inc. Industrials	Added	22,438	+3,541	$2,113,659	+182.1%	0.56%
ELV	Elevance Health, Inc. Healthcare	Reduced	5,303	-544	$2,050,829	+19.8%	0.55%
SSYS	Stratasys Ltd. Technology	Held	223,922	0	$1,916,772	+9.6%	0.51%
FTK	Flotek Industries Inc/Cn/ Energy	Added	81,471	+54,620	$1,916,197	+320.5%	0.51%
PLPC	Preformed Line Products Co Industrials	Held	4,576	0	$1,878,722	+51.6%	0.50%
SHLS	Shoals Technologies Group, Inc. Technology	Added	185,927	+22,971	$1,840,677	+71.7%	0.49%
ANET	Arista Networks, Inc. Technology	Added	10,421	+1	$1,770,319	+38.4%	0.47%
TRNS	Transcat Inc Industrials	Held	19,024	0	$1,764,856	+26.3%	0.47%
WYFI	WhiteFiber, Inc. Technology	Added	45,386	+26,981	$1,763,246	+704.4%	0.47%
JPM	Jpmorgan Chase & Co Financial Services	Added	5,271	+21	$1,725,356	+11.7%	0.46%
PLUS	Eplus Inc Technology	Held	20,197	0	$1,680,996	+10.6%	0.45%
DIA	Spdr Dow Jones Industrial Average ETF Trust	Added	3,199	+11	$1,671,125	+13.2%	0.45%
VTOL	Bristow Group Inc. Energy	Added	39,996	+12	$1,652,634	−11.9%	0.44%
NXPI	NXP Semiconductors N.V. Technology	Reduced	5,609	-51	$1,576,297	+41.5%	0.42%
CPSH	Cps Technologies Corp/De/ Technology	Reduced	283,951	-151,571	$1,567,409	−3.8%	0.42%
OPY	Oppenheimer Holdings Inc Financial Services	Held	14,605	0	$1,541,411	+18.3%	0.41%
MYFW	First Western Financial Inc Financial Services	Held	47,431	0	$1,523,009	+30.6%	0.41%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.