VANGUARD PORTFOLIO MANAGEMENT LLC
Position in TUSK — Mammoth Energy Services, Inc.
CIK 2100121
MALVERN, PA
Position in TUSK
as of Mar 31, 2026
· filed May 8, 2026
Position Value
$343,355
New position
Shares Held
140,145
first reported quarter
Ownership
0.291%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2026
1 quarter on record
Voting authority
Sole 0%
Shared 0%
None 100%
Position in Conglomerates
Industrials · as of Jun 30, 2026VANGUARD PORTFOLIO MANAGEMENT LLC holds $4,497,127,811 across 16 Conglomerates names.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | HON |
Honeywell International Inc
|
7,862,818 | $1,760,484,950 | |
| 2 | MMM |
3M Co
|
9,542,983 | $1,545,104,377 | |
| 3 | VMI |
Valmont Industries Inc
|
854,011 | $493,276,753 | |
| 4 | OTTR |
Otter Tail Corp
|
2,996,322 | $269,609,053 | |
| 5 | GHC |
Graham Holdings Co
|
174,802 | $199,522,498 | |
| 6 | SEB |
Seaboard Corp /De/
|
17,758 | $79,277,573 | |
| 7 | DLX |
Deluxe Corp
|
2,641,870 | $63,087,855 | |
| 8 | MATW |
Matthews International Corp
|
1,248,196 | $33,601,436 |
All Filings in TUSK
Export CSV
1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $343,355 | 140,145 | Shares | Defined | 2026-05-08 | |
| No filing history on record for this holder in this stock. | ||||||