Corundum Group, Inc.
Registered adviserRegulatory profile
From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.
| Rosters | Regulatory AUM | Main clients |
|---|---|---|
| Apr 2026 to Nov 2026 | $1,694,340,444 | Pooled investment vehicles (59%) |
| Apr 2025 to Mar 2026 | $1,542,066,698 | Pooled investment vehicles (61%) |
| May 2024 to Mar 2025 | $1,407,752,246 | Pooled investment vehicles (63%) |
| Apr 2024 | $1,407,752,246 | Pooled investment vehicles (63%) |
| May 2023 to Mar 2024 | $1,298,984,013 | Pooled investment vehicles (60%) |
| Apr 2023 | $1,298,984,013 | Pooled investment vehicles (60%) |
Portfolio style
Measured from the filed 13F common-share book for Jun 30, 2026, the newest measured quarter, never from the firm's own description.
Closest benchmark: every 13F filer's combined book, active share 69.8%; sector active share 50.4% against the combined 13F book's sector weights.
Over time 26 measured quarters
How the bands are measured
Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.
Clone Performance
Build a hypothetical price-return history from this filer's public 13F holdings.
View clone backtestPortfolio Concentration
120 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026Portfolio Trend
Sector Breakdown
As of Sep 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Unclassified | 56.5% | $198,356,584 |
| Industrials | 11.8% | $41,565,438 |
| Technology | 11.3% | $39,495,282 |
| Healthcare | 5.5% | $19,416,384 |
| Financial Services | 4.3% | $15,164,382 |
| Communication Services | 3.4% | $11,900,903 |
| Basic Materials | 2.3% | $8,200,962 |
| Consumer Defensive | 1.5% | $5,262,495 |
| Consumer Cyclical | 1.4% | $4,791,321 |
| Energy | 1.3% | $4,396,692 |
| Utilities | 0.7% | $2,377,685 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| MMM | 3M Co | +39,093 | 138,476 | $22,730,835 | |
| IJR | iShares Core S&P Small-Cap ETF | +31,198 | 34,038 | $4,630,529 | |
| IJK | iShares S&P Mid-Cap 400 Growth ETF | +22,354 | 28,619 | $3,136,928 | |
| EFA | iShares MSCI EAFE ETF | +14,619 | 179,588 | $18,657,397 | |
| SOLV | Solventum Corp | +8,906 | 17,120 | $1,509,128 | |
| CSCO | Cisco Systems, Inc. | +8,030 | 28,266 | $3,042,269 | |
| AAPL | Apple Inc. | +6,688 | 31,139 | $10,369,909 | |
| FTGC | First Trust Global Tactical Commodity Strategy Fund | +5,147 | 89,329 | $2,732,574 | |
| MSFT | Microsoft Corp | +4,861 | 17,371 | $8,909,585 | |
| GOOG | Alphabet Inc. | +4,746 | 14,256 | $4,857,589 | |
| PFE | Pfizer Inc | +3,785 | 38,049 | $1,085,157 | |
| SPYM | State Street(R) SPDR(R) Portfolio S&P 500(R) ETF | +3,759 | 40,963 | $3,676,838 | |
| XLU | State Street(R) Utilities Select Sector SPDR(R) ETF | +3,201 | 56,576 | $2,231,357 | |
| IVW | iShares S&P 500 Growth ETF | +2,675 | 23,110 | $3,287,628 | |
| SPLV | Invesco S&P 500 Low Volatility ETF | +2,549 | 49,871 | $3,516,404 | |
| JPM | Jpmorgan Chase & Co | +2,526 | 12,361 | $4,089,389 | |
| IWF | iShares Russell 1000 Growth ETF | +2,453 | 344,169 | $43,110,608 | |
| BAC | Bank Of America Corp | +2,175 | 27,072 | $1,473,528 | |
| MRK | Merck & Co., Inc. | +2,126 | 12,829 | $1,864,181 | |
| VZ | Verizon Communications Inc | +2,009 | 19,608 | $899,418 | |
| VONV | VANGUARD RUSSELL 1000 VALUE INDEX FUND | +1,973 | 49,799 | $5,413,151 | |
| DIS | Walt Disney Co | +1,762 | 9,859 | $1,034,209 | |
| VEA | Vanguard FTSE Developed Markets ETF | +1,533 | 4,598 | $324,664 | |
| SPY | Spdr S&P 500 ETF Trust | +1,392 | 13,929 | $10,622,673 | |
| AMZN | Amazon Com Inc | +1,323 | 9,924 | $2,472,564 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| — | −1,225 | 51,848 | $0 | ||
| IJH | iShares Core S&P Mid-Cap ETF | −1,000 | 26,055 | $1,874,657 | |
| LRGE | Legg Mason ETF Investment Trust | −622 | 5,767 | $522,219 | |
| — | −438 | 47,498 | $0 | ||
| PANW | Palo Alto Networks Inc | −274 | 741 | $294,406 | |
| PGR | Progressive Corp | −219 | 1,046 | $216,846 | |
| IWO | iShares Russell 2000 Growth ETF | −160 | 34,562 | $12,335,177 | |
| MU | Micron Technology Inc | −138 | 900 | $958,599 | |
| NUSC | Nuveen ESG Small-Cap ETF | −124 | 43,193 | $2,095,940 | |
| SCHW | Schwab Charles Corp | −106 | 2,254 | $220,305 | |
| DHR | Danaher Corp | −102 | 1,538 | $340,743 | |
| CTAS | Cintas Corp | −52 | 1,348 | $262,940 | |
| GE | General Electric Co | −41 | 1,507 | $470,621 | |
| TSM | Taiwan Semiconductor Manufacturing Co Ltd | −31 | 1,143 | $521,425 | |
| TXN | Texas Instruments Inc | −28 | 2,100 | $588,189 | |
| WST | West Pharmaceutical Services Inc | −26 | 675 | $250,263 | |
| RSG | Republic Services, Inc. | −1 | 1,060 | $222,462 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarter| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| DVY | iShares Select Dividend ETF | 18,840 | $2,864,998 | |
| IVV | iShares Core S&P 500 ETF | 3,318 | $2,541,090 | |
| IJJ | iShares S&P Mid-Cap 400 Value ETF | 13,166 | $1,813,089 | |
| UNH | Unitedhealth Group Inc | 1,947 | $714,704 | |
| VTHR | VANGUARD RUSSELL 3000 INDEX FUND | 1,892 | $634,766 | |
| TMO | Thermo Fisher Scientific Inc. | 812 | $548,140 | |
| TGT | Target Corp | 2,982 | $467,249 | |
| UNP | Union Pacific Corp | 1,713 | $466,158 | |
| C | Citigroup Inc | 3,402 | $440,490 | |
| UGI | Ugi Corp | 9,773 | $348,602 | |
| EEM | iShares MSCI Emerging Markets ETF | 4,810 | $321,259 | |
| VWO | VANGUARD EMERGING MARKETS STOCK INDEX FUND | 4,683 | $277,748 | |
| IVOV | VANGUARD S&P MID-CAP 400 VALUE INDEX FUND | 2,097 | $224,127 | |
| IOT | Samsara Inc. | 5,279 | $201,288 | |
| No positions match the current search. | ||||
Sold Out
Positions the filer fully exited| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| DFAT | Dimensional U.S. Targeted Value ETF | 4,908 | $343,069 | |
| AJG | Arthur J. Gallagher & Co. | 1,079 | $247,706 | |
| DDOG | Datadog, Inc. | 898 | $233,803 | |
| MDY | Spdr S&P Midcap 400 ETF Trust | 300 | $211,002 | |
| FDXF | FedEx Freight Holding Company, Inc. | 1,340 | $202,340 | |
| No positions match the current search. | ||||
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| IWF |
iShares Russell 1000 Growth ETF
|
Added | 344,169 | $43,110,608 | 12.28% | |
| IWD |
iShares Russell 1000 Value ETF
|
Held | 167,207 | $41,455,631 | 11.81% | |
| MMM |
3M Co
Industrials
|
Added | 138,476 | $22,730,835 | 6.48% | |
| EFA |
iShares MSCI EAFE ETF
|
Added | 179,588 | $18,657,397 | 5.32% | |
| IWO |
iShares Russell 2000 Growth ETF
|
Reduced | 34,562 | $12,335,177 | 3.52% | |
| SPY |
Spdr S&P 500 ETF Trust
|
Added | 13,929 | $10,622,673 | 3.03% | |
| AAPL |
Apple Inc.
Technology
|
Added | 31,139 | $10,369,909 | 2.95% | |
| IWS |
iShares Russell Mid-Cap Value ETF
|
Added | 62,246 | $10,005,422 | 2.85% | |
| LMT |
Lockheed Martin Corp
Industrials
|
Added | 19,057 | $9,704,777 | 2.77% | |
| MSFT |
Microsoft Corp
Technology
|
Added | 17,371 | $8,909,585 | 2.54% | |
| LIN |
Linde PLC
Basic Materials
|
Added | 13,914 | $6,604,280 | 1.88% | |
| VONV |
VANGUARD RUSSELL 1000 VALUE INDEX FUND
|
Added | 49,799 | $5,413,151 | 1.54% | |
| GOOG |
Alphabet Inc.
Communication Services
|
Added | 14,256 | $4,857,589 | 1.38% | |
| IWB |
iShares Russell 1000 ETF
|
Added | 11,474 | $4,774,675 | 1.36% | |
| IJR |
iShares Core S&P Small-Cap ETF
|
Added | 34,038 | $4,630,529 | 1.32% | |
| IWM |
iShares Russell 2000 ETF
|
Added | 14,779 | $4,106,936 | 1.17% | |
| NVDA |
Nvidia Corp
Technology
|
Added | 17,941 | $4,097,365 | 1.17% | |
| JPM |
Jpmorgan Chase & Co
Financial Services
|
Added | 12,361 | $4,089,389 | 1.17% | |
| INTC |
Intel Corp
Technology
|
Added | 31,041 | $3,732,059 | 1.06% | |
| GLD |
Spdr Gold Trust
|
Added | 9,776 | $3,723,091 | 1.06% | |
| SPYM |
State Street(R) SPDR(R) Portfolio S&P 500(R) ETF
|
Added | 40,963 | $3,676,838 | 1.05% | |
| SPLV |
Invesco S&P 500 Low Volatility ETF
|
Added | 49,871 | $3,516,404 | 1.00% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
Added | 9,809 | $3,375,080 | 0.96% | |
| IVW |
iShares S&P 500 Growth ETF
|
Added | 23,110 | $3,287,628 | 0.94% | |
| LLY |
ELI LILLY & Co
Healthcare
|
Added | 2,801 | $3,240,981 | 0.92% | |
| IJK |
iShares S&P Mid-Cap 400 Growth ETF
|
Added | 28,619 | $3,136,928 | 0.89% | |
| XOM |
ExxonMobil Holdings Corp
Energy
|
Added | 19,213 | $3,126,915 | 0.89% | |
| CSCO |
Cisco Systems, Inc.
Technology
|
Added | 28,266 | $3,042,269 | 0.87% | |
| VOO |
VANGUARD 500 INDEX FUND
|
Added | 4,330 | $3,034,723 | 0.86% | |
| DVY |
iShares Select Dividend ETF
|
NEW | 18,840 | $2,864,998 | 0.82% | |
| FTGC |
First Trust Global Tactical Commodity Strategy Fund
|
Added | 89,329 | $2,732,574 | 0.78% | |
| CAT |
Caterpillar Inc
Industrials
|
Added | 3,368 | $2,730,740 | 0.78% | |
| IVV |
iShares Core S&P 500 ETF
|
NEW | 3,318 | $2,541,090 | 0.72% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
Added | 9,924 | $2,472,564 | 0.70% | |
| AVGO |
Broadcom Inc.
Technology
|
Added | 6,801 | $2,388,443 | 0.68% | |
| V |
Visa Inc.
Financial Services
|
Added | 6,223 | $2,236,110 | 0.64% | |
| XLU |
State Street(R) Utilities Select Sector SPDR(R) ETF
|
Added | 56,576 | $2,231,357 | 0.64% | |
| ABBV |
AbbVie Inc.
Healthcare
|
Added | 8,240 | $2,155,501 | 0.61% | |
| JNJ |
Johnson & Johnson
Healthcare
|
Added | 7,996 | $2,116,861 | 0.60% | |
| NUSC |
Nuveen ESG Small-Cap ETF
|
Reduced | 43,193 | $2,095,940 | 0.60% | |
| IJH |
iShares Core S&P Mid-Cap ETF
|
Reduced | 26,055 | $1,874,657 | 0.53% | |
| MRK |
Merck & Co., Inc.
Healthcare
|
Added | 12,829 | $1,864,181 | 0.53% | |
| IJJ |
iShares S&P Mid-Cap 400 Value ETF
|
NEW | 13,166 | $1,813,089 | 0.52% | |
| GS |
Goldman Sachs Group Inc
Financial Services
|
Added | 1,957 | $1,762,004 | 0.50% | |
| USB |
US Bancorp De
Financial Services
|
Added | 29,037 | $1,677,177 | 0.48% | |
| BMY |
Bristol Myers Squibb Co
Healthcare
|
Added | 26,645 | $1,662,648 | 0.47% | |
| BRK-B |
Berkshire Hathaway Inc
Financial Services
|
Added | 3,225 | $1,605,888 | 0.46% | |
| AMGN |
Amgen Inc
Healthcare
|
Added | 3,808 | $1,605,110 | 0.46% | |
| ECL |
Ecolab Inc.
Basic Materials
|
Added | 5,815 | $1,596,682 | 0.45% | |
| SOLV |
Solventum Corp
Healthcare
|
Added | 17,120 | $1,509,128 | 0.43% |
Showing the top 50 of 120 positions. Create a free account to see every position, past quarters, search, filters and CSV export.
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.