Skip to content
Disclosery

Corundum Trust Company, INC

Follow

13F filer, CIK 1987720, SIOUX FALLS, SD

Corundum Trust Company, INC reported $37,448,699 across 28 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-07-29. Its ten largest share positions make up 74.42% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001987720-26-000003

Period
2026-06-30
Reported value
$37.4M
Holdings
28
Top 10 weight
74.42%
New
1
Sold out
21

Largest buys vs the previous quarter

SecurityShares changeApprox. value
BAnew+958$207K
SPYadded+1$746
EFAadded+5$519

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
SKEexited-55,250-$1.64M
DSVSFexited-247,500-$1.59M
GREATLAND RES LTD ORDINARY …exited-141,250-$1.12M
LUGDFexited-11,000-$838K
WDOFFexited-38,000-$677K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0001987720-26-000003, largest first. % of portfolio is the value over $37,448,699, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
MMM3M COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 40,667 shares; 2024Q4: 40,503 shares; 2025Q1: 40,429 shares; 2025Q2: 40,427 shares; 2025Q3: 40,424 shares; 2025Q4: 39,155 shares; 2026Q1: 39,280 shares; 2026Q2: 39,280 shares 39,280$6.36M16.98%0Timeline
IJRISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 33,290 shares; 2024Q4: 31,490 shares; 2025Q1: 33,290 shares; 2025Q2: 32,298 shares; 2025Q3: 32,098 shares; 2025Q4: 30,082 shares; 2026Q1: 31,502 shares; 2026Q2: 31,295 shares 31,295$4.64M12.39%-207Timeline
DVYISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 19,014 shares; 2024Q4: 19,014 shares; 2025Q1: 19,014 shares; 2025Q2: 19,014 shares; 2025Q3: 19,014 shares; 2025Q4: 18,872 shares; 2026Q1: 18,872 shares; 2026Q2: 18,840 shares 18,840$2.94M7.86%-32Timeline
IJKISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 22,184 shares; 2024Q4: 21,744 shares; 2025Q1: 21,744 shares; 2025Q2: 21,744 shares; 2025Q3: 21,744 shares; 2025Q4: 21,744 shares; 2026Q1: 22,354 shares; 2026Q2: 22,354 shares 22,354$2.63M7.01%0Timeline
IVVISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 2,957 shares; 2024Q4: 2,957 shares; 2025Q1: 2,957 shares; 2025Q2: 2,957 shares; 2025Q3: 2,957 shares; 2025Q4: 2,943 shares; 2026Q1: 3,306 shares; 2026Q2: 3,306 shares 3,306$2.48M6.61%0Timeline
IJJISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 13,584 shares; 2024Q4: 13,166 shares; 2025Q1: 13,166 shares; 2025Q2: 13,166 shares; 2025Q3: 13,166 shares; 2025Q4: 13,166 shares; 2026Q1: 13,166 shares; 2026Q2: 13,166 shares 13,166$1.95M5.19%0Timeline
AAPLAPPLE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 8,349 shares; 2024Q4: 7,741 shares; 2025Q1: 6,546 shares; 2025Q2: 6,540 shares; 2025Q3: 6,527 shares; 2025Q4: 6,189 shares; 2026Q1: 6,512 shares; 2026Q2: 6,512 shares 6,512$1.88M5.03%0Timeline
GOOGALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 6,362 shares; 2024Q4: 6,314 shares; 2025Q1: 6,059 shares; 2025Q2: 6,058 shares; 2025Q3: 6,027 shares; 2025Q4: 5,881 shares; 2026Q1: 5,325 shares; 2026Q2: 5,313 shares 5,313$1.88M5.01%-12Timeline
MSFTMICROSOFT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 5,731 shares; 2024Q4: 5,692 shares; 2025Q1: 5,226 shares; 2025Q2: 4,942 shares; 2025Q3: 4,830 shares; 2025Q4: 4,794 shares; 2026Q1: 4,823 shares; 2026Q2: 4,823 shares 4,823$1.8M4.8%0Timeline
EFAISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 13,694 shares; 2024Q4: 12,618 shares; 2025Q1: 12,735 shares; 2025Q2: 12,732 shares; 2025Q3: 12,726 shares; 2025Q4: 12,319 shares; 2026Q1: 12,651 shares; 2026Q2: 12,656 shares 12,656$1.31M3.51%+5Timeline
LLYELI LILLY & COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,205 shares; 2024Q4: 1,178 shares; 2025Q1: 1,145 shares; 2025Q2: 1,102 shares; 2025Q3: 1,100 shares; 2025Q4: 1,076 shares; 2026Q1: 1,095 shares; 2026Q2: 1,095 shares 1,095$1.31M3.51%0Timeline
SPYSTATE STR SPDR S&P 500 ETF TQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,660 shares; 2024Q4: 662 shares; 2025Q1: 1,631 shares; 2025Q2: 1,629 shares; 2025Q3: 1,616 shares; 2025Q4: 662 shares; 2026Q1: 1,232 shares; 2026Q2: 1,233 shares 1,233$921K2.46%+1Timeline
CSCOCISCO SYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 7,827 shares; 2024Q4: 7,669 shares; 2025Q1: 7,808 shares; 2025Q2: 7,807 shares; 2025Q3: 7,788 shares; 2025Q4: 7,652 shares; 2026Q1: 7,756 shares; 2026Q2: 7,756 shares 7,756$911K2.43%0Timeline
JPMJPMORGAN CHASE & COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 2,512 shares; 2024Q4: 2,457 shares; 2025Q1: 2,505 shares; 2025Q2: 2,504 shares; 2025Q3: 2,487 shares; 2025Q4: 2,442 shares; 2026Q1: 2,476 shares; 2026Q2: 2,476 shares 2,476$810K2.16%0Timeline
SOLVSOLVENTUM CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 10,111 shares; 2024Q4: 10,111 shares; 2025Q1: 10,111 shares; 2025Q2: 10,111 shares; 2025Q3: 10,111 shares; 2025Q4: 9,831 shares; 2026Q1: 9,831 shares; 2026Q2: 9,831 shares 9,831$758K2.03%0Timeline
VTHRVANGUARD SCOTTSDALE FDSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,892 shares; 2024Q4: 1,892 shares; 2025Q1: 1,892 shares; 2025Q2: 1,892 shares; 2025Q3: 1,892 shares; 2025Q4: 1,892 shares; 2026Q1: 1,892 shares; 2026Q2: 1,892 shares 1,892$627K1.67%0Timeline
UNHUNITEDHEALTH GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,622 shares; 2024Q4: 1,604 shares; 2025Q1: 1,620 shares; 2025Q2: 1,508 shares; 2025Q3: 1,499 shares; 2025Q4: 1,499 shares; 2026Q1: 1,499 shares; 2026Q2: 1,499 shares 1,499$623K1.66%0Timeline
CCITIGROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 3,315 shares; 2024Q4: 3,315 shares; 2025Q1: 3,315 shares; 2025Q2: 3,315 shares; 2025Q3: 3,315 shares; 2025Q4: 3,315 shares; 2026Q1: 3,315 shares; 2026Q2: 3,315 shares 3,315$464K1.24%0Timeline
IVWISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 800 shares; 2025Q4: not reported; 2026Q1: 3,110 shares; 2026Q2: 3,110 shares 3,110$428K1.14%0Timeline
AMZNAMAZON COM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,727 shares; 2024Q4: 1,679 shares; 2025Q1: 1,722 shares; 2025Q2: 1,721 shares; 2025Q3: 1,712 shares; 2025Q4: 1,672 shares; 2026Q1: 1,703 shares; 2026Q2: 1,703 shares 1,703$406K1.08%0Timeline
UNPUNION PAC CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,382 shares; 2024Q4: 1,382 shares; 2025Q1: 1,382 shares; 2025Q2: 1,382 shares; 2025Q3: 1,382 shares; 2025Q4: 1,382 shares; 2026Q1: 1,382 shares; 2026Q2: 1,382 shares 1,382$376K1%0Timeline
UGIUGI CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 11,373 shares; 2024Q4: not reported; 2025Q1: 11,373 shares; 2025Q2: 9,773 shares; 2025Q3: 9,773 shares; 2025Q4: not reported; 2026Q1: 9,773 shares; 2026Q2: 9,773 shares 9,773$338K0.9%0Timeline
EEMISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 4,810 shares; 2024Q4: 4,810 shares; 2025Q1: 4,810 shares; 2025Q2: 4,810 shares; 2025Q3: 4,810 shares; 2025Q4: 4,810 shares; 2026Q1: 4,810 shares; 2026Q2: 4,810 shares 4,810$329K0.88%0Timeline
BRK-BBERKSHIRE HATHAWAY INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 671 shares; 2024Q4: 643 shares; 2025Q1: 667 shares; 2025Q2: 666 shares; 2025Q3: 659 shares; 2025Q4: 638 shares; 2026Q1: 653 shares; 2026Q2: 653 shares 653$327K0.87%0Timeline
IVEISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 1,130 shares; 2026Q2: 1,130 shares 1,130$257K0.69%0Timeline
TMOTHERMO FISHER SCIENTIFIC INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 500 shares; 2024Q4: 500 shares; 2025Q1: 500 shares; 2025Q2: 500 shares; 2025Q3: 500 shares; 2025Q4: 500 shares; 2026Q1: 500 shares; 2026Q2: 500 shares 500$251K0.67%0Timeline
MRKMERCK & CO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,982 shares; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 1,963 shares; 2025Q4: not reported; 2026Q1: 1,824 shares; 2026Q2: 1,824 shares 1,824$234K0.63%0Timeline
BABOEING COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 886 shares; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 958 shares 958$207K0.55%newTimeline

Sold out in Q2 2026

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
SKESKEENA RES LTD NEW55,250$1.64Mshares
DSVSFDISCOVERY SILVER CORP COM (CAN247,500$1.59Mshares
GREATLAND RES LTD ORDINARY …GREATLAND RES LTD ORDINARY FUL141,250$1.12Mshares
LUGDFLUNDIN GOLD INC (CANADA)11,000$838Kshares
WDOFFWESDOME GOLD MINES LTD (CANADA38,000$677Kshares
AYAAYA GOLD & SILVER INC40,000$612Kshares
NGXXFNGEX MINERALS LTD NEW COM (CAN32,500$587Kshares
ISHARES S AND P/TSX CAPPED …ISHARES S AND P/TSX CAPPED ENE28,000$547Kshares
FNVFRANCO NEV CORP2,000$494Kshares
NEMNEWMONT CORP4,000$433Kshares
AEMAGNICO EAGLE MINES LTD2,000$406Kshares
KGCKINROSS GOLD CORP10,000$305Kshares
SNWGFSNOWLINE GOLD CORP COM SHS (CA27,000$269Kshares
EVOLUTION MINING LTD US LIS…EVOLUTION MINING LTD US LISTED30,000$264Kshares
AGFIRST MAJESTIC SILVER CORP12,000$258Kshares
GMINFG MNG VENTURES CORP NEW COM (C7,000$245Kshares
VZLAVIZSLA SILVER CORP70,250$232Kshares
NORTHERN STAR RESOURCES LTD…NORTHERN STAR RESOURCES LTD SHS13,500$196Kshares
SXGCFSOUTHERN CROSS GOLD CONS LTD C30,000$183Kshares
RUPRFRUPERT RES LTD33,500$154Kshares
OGNNFOROGEN ROYALTIES INC NEW COM (50,000$130Kshares

How Q2 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001987720-26-000003 base2026-07-29acceptance time not in the bulk data set

Filings

Every filing of this filer: 13F reports and notices, the 13D and 13G it filed or is a reporting person of, and Forms 3, 4 and 5 it reported as an owner.

FilingSubjectFiledAcceptedIngested
13F-HR 0001987720-26-000003 Quarter ended 2026-06-302026-07-29acceptance time not in the bulk data set
13F-HR 0001987720-26-000002 Quarter ended 2026-03-312026-04-15acceptance time not in the bulk data set
13F-HR 0001987720-26-000001 Quarter ended 2025-12-312026-01-20acceptance time not in the bulk data set
13F-HR 0001987720-25-000007 Quarter ended 2025-09-302025-10-24acceptance time not in the bulk data set
13F-HR 0001987720-25-000006 Quarter ended 2025-06-302025-07-28acceptance time not in the bulk data set
13F-HR 0001987720-25-000004 Quarter ended 2025-03-312025-04-24acceptance time not in the bulk data set
13F-HR 0001987720-25-000001 Quarter ended 2024-12-312025-01-17acceptance time not in the bulk data set
13F-HR 0001987720-24-000002 Quarter ended 2024-09-302024-10-22acceptance time not in the bulk data set
13F-HR 0001987720-24-000001 Quarter ended 2024-06-302024-07-24acceptance time not in the bulk data set
13F-HR 0001987720-23-000002 Quarter ended 2023-09-302023-10-23acceptance time not in the bulk data set
13F-HR 0001987720-23-000001 Quarter ended 2023-06-302023-08-03acceptance time not in the bulk data set