Corundum Group, Inc.

Q3 2025 13F-HR Holdings

Location
Colorado Springs, CO
Holdings as of
9/30/2025
Date filed
10/24/2025
Form type
13F-HR
Num holdings
103
Total value ($000)
$243,388
Net value change ($000)
+17,224 (7.6%)
New positions
3
Sold out positions
3
Turnover %
0.7%
Sector allocation + QoQ delta (equities-only)
Prev filing: 7/21/2025 Next filing: 1/12/2026 SEC filing

Snapshot: Change Analysis

Compared to Q2 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)
IWF 2,840 10.3%
IWD 2,414 10.7%
AAPL 1,063 21.7%
IWN 964 14.3%
IWO 946 11.4%
GOOGL 753 39.1%
VZ 693 NEW
EFA 691 6.1%
IWS 670 10.1%
GOOGL 550 34.5%
Top Reduces (Value $000, Stocks/ETFs)
SOLV -291 -32.6%
TMO -223 -100.0%
MRVL -216 -100.0%
NFLX -201 -100.0%
DIS -146 -17.0%
COST -112 -8.3%
FISV -105 -25.4%
V -104 -5.4%
UPS -84 -14.4%
LRGE -83 -13.5%
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