Round Rock Advisors LLC

Q4 2025 13F-HR/A Holdings

Location
Wilton, CT
Holdings as of
12/31/2025
Date filed
4/7/2026
Form type
13F-HR/A - RESTATEMENT
Num holdings
326
Total value ($000)
$664,791
Net value change ($000)
+33,602 (5.3%)
New positions
44
Sold out positions
45
Turnover %
6.2%
Sector allocation + QoQ delta (equities-only)
Prev filing: 11/14/2025 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q3 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
SDSI 3,622 41.9%
NBSD 3,021 35.2%
SMH 2,432 8.3%
EZBC 2,088 NEW
XLV 2,069 14.9%
GOOGL 1,906 19.5%
FEIM 1,851 242.0%
SPOT 1,547 NEW
QQQ 1,440 3.0%
VYM 1,439 3.4%
Top Reduces (Value $000, Stocks/ETFs)
RSP -5,048 -37.0%
ITT -3,650 -100.0%
IBDQ -2,639 -100.0%
MSFT -2,133 -12.1%
TSLA -1,992 -73.0%
AAMI -1,082 -100.0%
CIFR -944 -100.0%
BRK-B -743 -4.9%
SWIM -721 -41.0%
NFLX -701 -43.1%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type