Q2 2026 13F · SEC CIK 1987720

Corundum Trust Company, INC

Bank & trustFiled 2026-07-29 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $37.4M
Reported positions: 28
Top holdings a year, 3 yrs: +21.4%
Average holding period: 2.8 yrs

Corundum Trust Company, INC is a bank & trust that reported 28 positions worth $37.4M in its Q2 2026 13F, filed 2026-07-29. Its largest holdings were 3m Co Com (MMM, 17.0%), Ishares Core S&p Small Cap ETF (IJR, 12.4%), iShares Select Dividend ETF Total (DVY, 7.9%). A portfolio copying its top holdings returned 21.4% a year over the last 3 years, against 20.4% for the S&P 500.

Corundum Trust Company, INC holdings all 28 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Corundum Trust Company, INC 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
MMM3m Co Com	17.0%	13.0%	39,280	+0.0%	$6.4M
IJRIshares Core S&p Small Cap ETF	12.4%	8.9%	31,295	-0.7%	$4.6M
DVYiShares Select Dividend ETF Total	7.9%	6.5%	18,840	-0.2%	$2.9M
IJKIshares S&p Mid-Cap 400 Growth ETF	7.0%	5.1%	22,354	+0.0%	$2.6M
IVVIshares Core S&p 500 ETF	6.6%	4.9%	3,306	+0.0%	$2.5M
IJJiShares S&P Midcap 400 Value	5.2%	4.0%	13,166	+0.0%	$1.9M
AAPLApple Inc	5.0%	3.8%	6,512	+0.0%	$1.9M
GOOGAlphabet Inc	5.0%	3.5%	5,313	-0.2%	$1.9M
MSFTMicrosoft Corp	4.8%	4.1%	4,823	+0.0%	$1.8M
EFAiShs MSCI EAFE	3.5%	2.8%	12,656	+0.0%	$1.3M
LLYLilly Eli & Co	3.5%	2.3%	1,095	+0.0%	$1.3M
SPYSpdr S&p 500 ETF Tr	2.5%	1.8%	1,233	+0.1%	$921K
CSCOCisco Sys Inc	2.4%	1.4%	7,756	+0.0%	$911K
JPMJpmorgan Chase & Co	2.2%	1.7%	2,476	+0.0%	$810K
SOLVSolventum Corp	2.0%	1.5%	9,831	+0.0%	$758K
VTHRVanguard Scottsdale Fds	1.7%	1.2%	1,892	+0.0%	$627K
UNHUnitedhealth Group Inc Com	1.7%	0.9%	1,499	+0.0%	$623K
CCitigroup Inc Com New	1.2%	0.9%	3,315	+0.0%	$464K
IVWIshares	1.1%	0.8%	3,110	+0.0%	$428K
AMZNAmazon Com Inc Com	1.1%	0.8%	1,703	+0.0%	$406K
UNPUnion Pac Corp	1.0%	0.8%	1,382	+0.0%	$376K
UGIUgi Corp New	0.9%	0.8%	9,773	+0.0%	$338K
EEMIshares	0.9%	0.6%	4,810	+0.0%	$329K
BRK-BBerkshire Hathaway Inc Del	0.9%	0.7%	653	+0.0%	$327K
IVEIshares S&p 500 Value ETF	0.7%	0.5%	1,130	+0.0%	$257K
TMOThermo Fisher Scientific Inc	0.7%	0.6%	500	+0.0%	$251K
MRKMerck & Co. Inc	0.6%	0.5%	1,824	+0.0%	$234K
BABoeing Co	0.6%	New	958	—	$207K

What Corundum Trust Company, INC bought and sold in Q2 2026, against Q1 2026.

New positions

BA Boeing Co0.6% of 13F

Added to

No position grew by more than 5%.

Reduced

No position shrank by more than 5%.

Sold out

SKE Skeena Res Ltd Newwas 3.7%
Discovery Silver Corp Commonwas 3.6%
Greatland Res Ltd Ordinary Fulwas 2.5%
LUGDF Lundin Gold Incwas 1.9%
WDOFF Wesdome Gold Mines Ltdwas 1.5%
AYASF Aya Gold & Silver Incwas 1.4%
NGXXF Ngex Minerals Ltd New Comwas 1.3%
Ishares S and P/tsx Capped Enewas 1.2%

Share counts compared with the Q1 2026 13F; a split also changes share counts.

How the holdings did against the S&P 500.

1 year: +29.5% /yr; S&P 500 +20.1%
3 years: +21.4% /yr; S&P 500 +20.4%
5 years: —

A portfolio of the filer's 20 largest 13F positions, weighted by value and rebuilt each quarter on the day the filing became public. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$37.4M	28
Q1 2026	$43.8M	48
Q4 2025	$43.9M	51
Q3 2025	$46.1M	127
Q2 2025	$37.9M	50
Q1 2025	$34.7M	50
Q4 2024	$33.3M	49
Q3 2024	$36.3M	52
Q2 2024	$34.4M	54
Q3 2023	$33.5M	37
Q2 2023	$36.6M	39

Questions about Corundum Trust Company, INC's portfolio

What stocks does Corundum Trust Company, INC own?

Corundum Trust Company, INC's latest 13F, for Q2 2026 and filed Jul 29, 2026, lists 28 positions worth $37.4M. The largest are 3m Co Com (MMM) at 17.0%, Ishares Core S&p Small Cap ETF (IJR) at 12.4%, iShares Select Dividend ETF Total (DVY) at 7.9%, Ishares S&p Mid-Cap 400 Growth ETF (IJK) at 7.0% and Ishares Core S&p 500 ETF (IVV) at 6.6%.

What did Corundum Trust Company, INC buy last quarter?

In Q2 2026, Corundum Trust Company, INC added a new position in Boeing Co (BA), compared with its Q1 2026 filing.

What did Corundum Trust Company, INC sell last quarter?

In Q2 2026, Corundum Trust Company, INC sold all of Skeena Res Ltd New (SKE), sold all of Discovery Silver Corp Common, sold all of Greatland Res Ltd Ordinary Ful, sold all of Lundin Gold Inc (LUGDF) and sold all of Wesdome Gold Mines Ltd (WDOFF), compared with its Q1 2026 filing.

How has Corundum Trust Company, INC's portfolio performed?

A portfolio copying Corundum Trust Company, INC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +21.4% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +29.5% against +20.1%.

When is Corundum Trust Company, INC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Corundum Trust Company, INC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.