Stocks/Funds/CIK 1846991

Round Rock Advisors, LLC

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1846991
Assets
$652M
+20.9% YoY
Holdings
316
Lifetime alpha vs market
-0.98% annual
Average hold time
2.3 yr
median 1.4 yr

Quarterly history

Cum return +77% vs S&P +87% · α -9% lifetimeAUM $652M · peak $664MFlow $1M (+0%)2020-122021-122022-122023-122024-122025-122026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-1.80%
trims when stocks drop
when a holding falls −10%+
Middle response
+0.64%
steady accumulation
Rally response
+6.38%
adds into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
VYMVanguard High Dividend Y$46M7.1%5.5 yr
QQQInvesco QQQ Trust, Serie$46M7.1%5.5 yr
JPSTJPMorgan Ultra-Short Inc$46M7.0%5.3 yr
SMHVanEck Semiconductor ETF$33M5.1%5.3 yr
IJRiShares Core S&P Small-C$30M4.6%5.5 yr
VOVanguard Mid-Cap ETF$28M4.2%5.5 yr
XLIState Street Industrial $18M2.8%5.5 yr
DVYiShares Select Dividend $17M2.7%5.3 yr
AAPLApple Inc.$17M2.6%+14.7%5.5 yr
XLVState Street Health Care$16M2.4%5.5 yr
SDSIAmerican Century Short D$15M2.3%0.8 yr
BRK-ABerkshire Hathaway Inc.$14M2.1%2.5 yr
NBSDNeuberger Berman Short D$13M1.9%0.8 yr
MSFTMicrosoft Corporation$12M1.8%-0.6%5.5 yr
GOOGAlphabet Inc.$11M1.6%+84.3%5.5 yr

Portfolio composition (YoY)

Industry mix
Asset Management51.1%-4.0pp$333M
Asset Management - Income9.7%-0.3pp$64M
Consumer Electronics2.7%-0.9pp$18M
Internet Content & Information2.5%+0.7pp$16M
Insurance - Diversified2.4%-1.0pp$16M
Software - Infrastructure2.1%-0.7pp$13M
Semiconductors1.6%+0.6pp$10M
Specialty Retail1.5%+0.2pp$10M
Drug Manufacturers - General1.4%-0.2pp$9M
Asset Management - Bonds1.3%-0.8pp$8M
Country
US97.9%-0.3pp
CA0.6%+0.2pp
CH0.4%-0.2pp
Unknown0.4%+0.0pp
NL0.2%-0.1pp
LU0.2%
IL0.2%
IE0.1%
Top 5: 30.9% · Top 10: 45.6% · Top 25: 64.0%

Winners

TickerPrev $PnLYoY %
GOOG$6M+0.01B84.3%
AAPL$19M+0.00B14.7%
XOM$4M+0.00B47.6%
NVDA$3M+0.00B60.9%
SPY$5M+0.00B17.6%

Losers

TickerPrev $PnLYoY %
ICE$5M-0.00B-7.8%
MSFT$14M-0.00B-0.6%

Top buys this quarter · 15

SSYS Stratasys Ltd.new+$2M
CPSH CPS Technologies Corporation+$1M
DCO Ducommun Incorporatednew+$1M
NEOG Neogen Corporation+$1M
CODA Coda Octopus Group, Inc.+$1M
LSTR Landstar System, Inc.new+$1M
CDNL Cardinal Infrastructure Group new+$1M
LRCX Lam Research Corporationnew+$1M
GLUE Monte Rosa Therapeutics, Inc.new+$1M
LIND Lindblad Expeditions Holdings,new+$1M

Top sells this quarter · 15

SPY State Street SPDR S&P 500 ETF $2M
ODC Oil-Dri Corporation of Americaexit$1M
AMZN Amazon.com, Inc.$1M
LZ LegalZoom.com, Inc.exit$1M
PLPC Preformed Line Products Compan$1M
MYE Myers Industries, Inc.exit$1M
LBRT Liberty Energy Inc.$2M
TE T1 Energy Incexit$1M
HCI HCI Group, Inc.exit$1M
VPG Vishay Precision Group, Inc.exit$1M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$652M316+16.74%+17.59%-0.85%+0.00B
2025-12-31$664M324+15.15%+17.72%-2.57%+0.02B
2025-09-30$631M326+15.33%+17.52%-2.19%-0.00B
2025-06-30$580M215+12.08%+14.94%-2.86%+0.01B
2025-03-31$539M216+10.82%+8.30%+2.52%+0.07B
2024-12-31$488M217+20.65%+24.89%-4.23%+0.05B
2024-09-30$428M183+28.59%+36.04%-7.44%-0.01B
2024-06-30$411M180+15.73%+24.49%-8.76%-0.03B
2024-03-31$417M190+19.68%+29.62%-9.95%-0.00B
2023-12-31$397M184+21.66%+26.18%-4.51%+0.11B
2023-09-30$264M141+17.23%+21.57%-4.34%-0.00B
2023-06-30$277M145+17.85%+19.42%-1.58%-0.01B
2023-03-31$261M142-6.65%-7.82%+1.16%-0.00B
2022-12-31$244M153-16.80%-18.17%+1.37%+0.01B
2022-09-30$221M142-12.63%-15.51%+2.88%+0.01B
2022-06-30$222M141-8.33%-10.62%+2.29%+0.01B