Corundum Group, Inc.

In its 13F for Q3 2025 (holdings as of September 30, 2025, filed October 24, 2025), Corundum Group, Inc. reported 103 stock positions worth $243.4 million. Its top holding was iShares Russell 1000 Growth (IWF) at 12.5% of the portfolio, followed by iShares Russell 1000 Value E (IWD, 10.3%) and 3M (MMM, 6.2%). Compared with Q2 2025, it opened 3 new positions, sold out of 3, added to 31 and reduced 52. The biggest buy was iShares Russell 1000 Value E (IWD, shares +6%) and the biggest sale 3M (MMM, shares −0%).

Most Recent 13F
Q2 2026
Location
COLORADO SPRINGS, CO
CIK
0001486083
Portfolio Value
$243.4M (Q3 2025)
SEC Filing
0001486083-25-000006 ↗ filed Oct 24, 2025

Holdings Value

0$100.0M$200.0M$300.0M$400.0M Q1 2024: $207.3M Q1 2024 Q2 2024: $256.0M Q2 2024 Q3 2024: $219.2M Q3 2024 Q4 2024: $267.8M Q4 2024 Q1 2025: $208.5M Q1 2025 Q2 2025: $226.2M Q2 2025 Q3 2025: $243.4M $243.4M Q3 2025 Q4 2025: $298.0M Q4 2025 Q1 2026: $299.2M Q1 2026 Q2 2026: $337.1M Q2 2026

Holdings 103 stocks · $243.4M
IWF iShares Russell 1000 Growth 12.47% 64,778 $30.3M No change
IWD iShares Russell 1000 Value E 10.27% 122,726 $25.0M Add +5.6%
MMM 3M Co. 6.24% 97,846 $15.2M Reduce -0.3%
EFA iShares MSCI Eafe ETF 4.93% 128,551 $12.0M Add +1.6%
IWO iShares Russell 2000 Growth 3.80% 28,904 $9.3M Reduce -0.5%
SUSA iShares ESG Optimized MSCI U 3.51% 62,978 $8.5M Reduce -1.8%
SPY SS SPDR S&P 500 ETF Trust-US 3.26% 11,920 $7.9M Reduce -5.9%
MSFT Microsoft Corp. 3.18% 14,930 $7.7M Reduce -1.2%
IWN iShares Russell 2000 Value E 3.17% 43,625 $7.7M Add +2.0%
IWP iShares Russell Mid-Cap Grow 3.16% 54,033 $7.7M No change
IWS iShares Russell Mid-Cap Valu 2.99% 52,101 $7.3M Add +4.2%
AAPL Apple Inc. 2.45% 23,455 $6.0M Reduce -2.0%
VONV Vanguard Russell 1000 Value 1.54% 42,023 $3.8M Add +0.8%
GLD SPDR Gold Shares 1.34% 9,157 $3.3M Reduce -0.6%
IWB iShares Russell 1000 ETF 1.28% 8,524 $3.1M Add +1.5%
JPM JPMorgan Chase & Co. 1.27% 9,823 $3.1M Reduce -2.2%
NVDA Nvidia Corp. 1.26% 16,395 $3.1M Reduce -4.7%
SPLV Invesco S&P 500 Low Volatili 1.21% 40,145 $2.9M Add +1.0%
GOOGL Alphabet Inc. Class A 1.10% 11,010 $2.7M Add +0.8%
NUSC Nuveen ESG Small-Cap ETF 1.04% 57,666 $2.5M Reduce -1.7%
IWM iShares Russell 2000 ETF 1.03% 10,362 $2.5M Add +2.8%
IVW iShares S&P 500 Growth ETF 1.02% 20,500 $2.5M No change
ORCL Oracle Corp. 0.96% 8,326 $2.3M Reduce -1.3%
GOOG Alphabet Inc. Class C 0.88% 8,798 $2.1M Reduce -2.0%
XLU St Sr Utl SL SE SPDR ETF-Usd 0.82% 22,830 $2.0M Add +0.8%
IJH iShares Core S&P Midcap ETF 0.81% 30,295 $2.0M Reduce -2.8%
AMZN Amazon.com Inc. 0.81% 8,960 $2.0M Reduce -0.4%
FTGC First Trust Global Tactical 0.78% 73,579 $1.9M Add +1.2%
XOM Exxon Mobil Corp. 0.78% 16,875 $1.9M Reduce -1.6%
AVGO Broadcom Inc. 0.76% 5,624 $1.9M Reduce -0.0%
V Visa Inc. Class A 0.74% 5,305 $1.8M Reduce -1.6%
ABBV Abbvie Inc. 0.71% 7,498 $1.7M Reduce -0.3%
VOO Vanguard S&P 500 ETF 0.70% 2,781 $1.7M Add +1.2%
CAT Caterpillar Inc. 0.65% 3,312 $1.6M Reduce -1.0%
HD Home Depot Inc. 0.64% 3,873 $1.6M Add +1.6%
GS Goldman Sachs Group Inc. 0.60% 1,819 $1.4M Reduce -3.0%
ECL Ecolab Inc. 0.57% 5,105 $1.4M Reduce -0.5%
JNJ Johnson & Johnson 0.56% 7,363 $1.4M Reduce -0.9%
CSCO Cisco Systems Inc. 0.55% 19,617 $1.3M Reduce -0.1%
MA Mastercard Inc. Class A 0.55% 2,343 $1.3M Reduce -2.5%
USB US Bancorp 0.54% 27,394 $1.3M Reduce -2.5%
BRK.B Berkshire Hathaway Inc. Class B 0.54% 2,609 $1.3M Add +0.2%
WM Waste Management Inc. 0.52% 5,736 $1.3M Reduce -0.3%
BAC Bank of America Corp. filed as BANK AMERICA CORP 0.51% 24,243 $1.3M Reduce -2.4%
COST Costco Wholesale Corp. 0.51% 1,345 $1.2M Reduce -1.9%
IVE iShares S&P 500 Value ETF 0.51% 5,970 $1.2M Reduce -3.1%
LLY Eli Lilly & Co. 0.51% 1,613 $1.2M Reduce -1.0%
DUK Duke Energy Corp. 0.49% 9,646 $1.2M Reduce -0.3%
ABT Abbott Laboratories 0.48% 8,725 $1.2M Reduce -0.3%
BMY Bristol-Myers Squibb Co. 0.47% 25,445 $1.1M Reduce -0.1%
MCD McDonald's Corp. 0.45% 3,616 $1.1M Add +3.2%
WMT Walmart Inc. 0.44% 10,276 $1.1M Reduce -0.8%
AMGN Amgen Inc. 0.41% 3,526 $995K Add +0.2%
ADP Automatic Data Processing 0.40% 3,354 $984K Add +0.2%
IJR iShares Core S&P Small-Cap E 0.40% 8,208 $975K No change
INTC Intel Corp. 0.37% 26,969 $905K Reduce -2.2%
PG The Procter & Gamble Co. 0.37% 5,832 $896K Add +1.8%
PFE Pfizer Inc. 0.34% 32,716 $834K Add +1.7%
MRK Merck & Co. Inc. 0.34% 9,744 $818K Add +1.3%
MDT Medtronic PLC 0.33% 8,427 $803K Add +0.8%
DIS The Walt Disney Co. filed as DISNEY WALT CO 0.29% 6,247 $715K Reduce -10.0%
CVX Chevron Corp. 0.29% 4,591 $713K Add +0.8%
VZ Verizon Communications Inc. 0.28% 15,771 $693K New
KO The Coca-Cola Co. 0.28% 10,228 $678K Add +1.6%
IJK iShares S&P Mid-Cap 400 Grow 0.28% 7,000 $671K No change
HON Honeywell International Inc. 0.26% 2,970 $625K Add +2.1%
TGT Target Corp. 0.25% 6,755 $606K Add +1.4%
SOLV Solventum Corp. 0.25% 8,227 $601K Reduce -30.1%
XEL Xcel Energy Inc. 0.23% 7,083 $571K Add +2.3%
ANET Arista Networks Inc. 0.22% 3,657 $533K No change
LRGE Clearbridge Large Cap Growth 0.22% 6,363 $530K Reduce -17.7%
UPS United Parcel Service Class B 0.20% 5,965 $498K Add +3.5%
FDX FedEx Corp. 0.20% 2,069 $488K Add +1.4%
TSCO Tractor Supply Company 0.19% 7,925 $451K No change
QQQ Invesco QQQ Trust Series 1 0.18% 715 $429K No change
GE General Electric filed as GE AEROSPACE 0.18% 1,422 $428K Reduce -1.9%
TXN Texas Instruments Inc. 0.16% 2,133 $392K Reduce -1.1%
QUAL iShares MSCI USA Quality Fac 0.16% 1,994 $388K No change
RSG Republic Services Inc. 0.16% 1,683 $386K No change
IJT iShares S&P Small-Cap 600 GR 0.15% 2,600 $368K No change
MU Micron Technology Inc. 0.13% 1,879 $314K Reduce -0.2%
FISV Fiserv Inc. 0.13% 2,400 $309K No change
NUDM Nuveen ESG Intl Devel MRK Eq 0.13% 8,153 $307K Add +2.0%
META Meta Platforms Inc. Class A 0.12% 411 $302K Add +4.0%
INTU Intuit Inc. 0.11% 401 $274K Reduce -7.4%
VLTO Veralto Corp. 0.11% 2,557 $273K Reduce -6.4%
SPYM Ste STR SPDR PT S&P 500 ETF 0.11% 3,467 $272K Add +7.8%
VUG Vanguard Mrngstar GR ETF-Sui 0.11% 547 $262K No change
VO Vngrd Mrngstr MD-Cap ETF-Usd 0.11% 890 $261K No change
VUSB Vanguard Ultra Short Bond Et 0.10% 5,069 $253K Reduce -7.3%
ICE Intercontinental Exchange Inc. 0.10% 1,497 $252K Reduce -2.4%
TSM Taiwan Semiconductor-SP ADR 0.10% 887 $248K New
NOW ServiceNow Inc. 0.10% 268 $247K Reduce -10.1%
UBER Uber Technologies Inc. 0.10% 2,392 $234K Reduce -12.8%
MPWR Monolithic Power Systems Inc. 0.10% 254 $234K Reduce -8.3%
UNH Unitedhealth Group Inc. 0.10% 677 $234K Reduce -7.1%
PGR Progressive Corp. 0.10% 945 $233K Reduce -19.8%
MTN Vail Resorts Inc. 0.09% 1,500 $224K No change
MCHP Microchip Technology Inc. 0.09% 3,351 $215K Reduce -4.4%
CDNS Cadence Design SYS Inc. 0.09% 605 $213K Reduce -15.5%
AJG Arthur J Gallagher & Co. filed as GALLAGHER ARTHUR J & CO 0.09% 680 $211K New
TMC TMC the Metals Co. Inc. 0.03% 10,500 $67K No change
FUTO Futureone Inc. 0.00% 100,000 $0 No change

Portfolio Sells Q2 2025 → Q3 2025
MMM 3M Co. Reduce -0.3% 6.24% −0.37
SPY SS SPDR S&P 500 ETF Trust-US Reduce -5.9% 3.26% −0.20
SOLV Solventum Corp. Reduce -30.1% 0.25% −0.15
MSFT Microsoft Corp. Reduce -1.2% 3.18% −0.15
V Visa Inc. Class A Reduce -1.6% 0.74% −0.10
TMO Thermo Fisher Scientific Inc. Sold out 0.00% −0.10
MRVL Marvell Technology Inc. Sold out 0.00% −0.10
NFLX Netflix Inc. Sold out 0.00% −0.09
COST Costco Wholesale Corp. Reduce -1.9% 0.51% −0.09
DIS The Walt Disney Co. Reduce -10.0% 0.29% −0.09
SUSA iShares ESG Optimized MSCI U Reduce -1.8% 3.51% −0.08
AMZN Amazon.com Inc. Reduce -0.4% 0.81% −0.06
WM Waste Management Inc. Reduce -0.3% 0.52% −0.06
LLY Eli Lilly & Co. Reduce -1.0% 0.51% −0.06
LRGE Clearbridge Large Cap Growth Reduce -17.7% 0.22% −0.05
CSCO Cisco Systems Inc. Reduce -0.1% 0.55% −0.05
BMY Bristol-Myers Squibb Co. Reduce -0.1% 0.47% −0.05
MA Mastercard Inc. Class A Reduce -2.5% 0.55% −0.05
ABT Abbott Laboratories Reduce -0.3% 0.48% −0.05
PGR Progressive Corp. Reduce -19.8% 0.10% −0.04
IJH iShares Core S&P Midcap ETF Reduce -2.8% 0.81% −0.04
INTU Intuit Inc. Reduce -7.4% 0.11% −0.04
TXN Texas Instruments Inc. Reduce -1.1% 0.16% −0.04
ECL Ecolab Inc. Reduce -0.5% 0.57% −0.04
XOM Exxon Mobil Corp. Reduce -1.6% 0.78% −0.04
NOW ServiceNow Inc. Reduce -10.1% 0.10% −0.03
IVE iShares S&P 500 Value ETF Reduce -3.1% 0.51% −0.03
ICE Intercontinental Exchange Inc. Reduce -2.4% 0.10% −0.02
MCHP Microchip Technology Inc. Reduce -4.4% 0.09% −0.02
USB US Bancorp Reduce -2.5% 0.54% −0.02
UBER Uber Technologies Inc. Reduce -12.8% 0.10% −0.02
VUSB Vanguard Ultra Short Bond Et Reduce -7.3% 0.10% −0.02
DUK Duke Energy Corp. Reduce -0.3% 0.49% −0.01
JPM JPMorgan Chase & Co. Reduce -2.2% 1.27% −0.01
WMT Walmart Inc. Reduce -0.8% 0.44% −0.01
NUSC Nuveen ESG Small-Cap ETF Reduce -1.7% 1.04% −0.01
CDNS Cadence Design SYS Inc. Reduce -15.5% 0.09% −0.01
VLTO Veralto Corp. Reduce -6.4% 0.11% −0.01
BAC Bank of America Corp. Reduce -2.4% 0.51% −0.01
UNH Unitedhealth Group Inc. Reduce -7.1% 0.10% −0.00
MPWR Monolithic Power Systems Inc. Reduce -8.3% 0.10% +0.01
GS Goldman Sachs Group Inc. Reduce -3.0% 0.60% +0.01
GE General Electric Reduce -1.9% 0.18% +0.01
MU Micron Technology Inc. Reduce -0.2% 0.13% +0.03
NVDA Nvidia Corp. Reduce -4.7% 1.26% +0.06
JNJ Johnson & Johnson Reduce -0.9% 0.56% +0.06
CAT Caterpillar Inc. Reduce -1.0% 0.65% +0.08
AVGO Broadcom Inc. Reduce -0.0% 0.76% +0.08
GLD SPDR Gold Shares Reduce -0.6% 1.34% +0.10
ABBV Abbvie Inc. Reduce -0.3% 0.71% +0.10

Portfolio Buys Q2 2025 → Q3 2025
IWD iShares Russell 1000 Value E Add +5.6% 10.27% +0.29
VZ Verizon Communications Inc. New 0.28% +0.28
GOOGL Alphabet Inc. Class A Add +0.8% 1.10% +0.25
IWN iShares Russell 2000 Value E Add +2.0% 3.17% +0.18
TSM Taiwan Semiconductor-SP ADR New 0.10% +0.10
AJG Arthur J Gallagher & Co. New 0.09% +0.09
IWS iShares Russell Mid-Cap Valu Add +4.2% 2.99% +0.07
IWM iShares Russell 2000 ETF Add +2.8% 1.03% +0.07
HD Home Depot Inc. Add +1.6% 0.64% +0.03
XEL Xcel Energy Inc. Add +2.3% 0.23% +0.03
IWB iShares Russell 1000 ETF Add +1.5% 1.28% +0.02
VOO Vanguard S&P 500 ETF Add +1.2% 0.70% +0.01
SPYM Ste STR SPDR PT S&P 500 ETF Add +7.8% 0.11% +0.01
MDT Medtronic PLC Add +0.8% 0.33% +0.01
CVX Chevron Corp. Add +0.8% 0.29% +0.00
NUDM Nuveen ESG Intl Devel MRK Eq Add +2.0% 0.13% +0.00
XLU St Sr Utl SL SE SPDR ETF-Usd Add +0.8% 0.82% +0.00
MRK Merck & Co. Inc. Add +1.3% 0.34% −0.00
MCD McDonald's Corp. Add +3.2% 0.45% −0.00
PFE Pfizer Inc. Add +1.7% 0.34% −0.00
FDX FedEx Corp. Add +1.4% 0.20% −0.00
META Meta Platforms Inc. Class A Add +4.0% 0.12% −0.00
FTGC First Trust Global Tactical Add +1.2% 0.78% −0.01
BRK.B Berkshire Hathaway Inc. Class B Add +0.2% 0.54% −0.02
AMGN Amgen Inc. Add +0.2% 0.41% −0.03
VONV Vanguard Russell 1000 Value Add +0.8% 1.54% −0.03
PG The Procter & Gamble Co. Add +1.8% 0.37% −0.04
KO The Coca-Cola Co. Add +1.6% 0.28% −0.04
TGT Target Corp. Add +1.4% 0.25% −0.04
HON Honeywell International Inc. Add +2.1% 0.26% −0.04
ADP Automatic Data Processing Add +0.2% 0.40% −0.05
UPS United Parcel Service Class B Add +3.5% 0.20% −0.05
SPLV Invesco S&P 500 Low Volatili Add +1.0% 1.21% −0.07
EFA iShares MSCI Eafe ETF Add +1.6% 4.93% −0.07

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 112$337.1MIWF, IWD, EFA, MMM, IWO
Q1 2026 108$299.2MIWF, IWD, EFA, MMM, LMT
Q4 2025 113$298.0MIWF, IWD, MMM, EFA, LMT
Q3 2025 103$243.4MIWF, IWD, MMM, EFA, IWO
Q2 2025 103$226.2MIWF, IWD, MMM, EFA, IWO
Q1 2025 98$208.5MIWF, IWD, MMM, EFA, SUSA
Q4 2024 100$267.8MIWF, IWD, SPY, MMM, EFA
Q3 2024 100$219.2MIWF, IWD, MMM, EFA, IWO
Q2 2024 101$256.0MIWF, IWD, SPY, EFA, MMM
Q1 2024 98$207.3MIWF, IWD, MMM, EFA, IWO