Security key
56155L108
MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (TUSK)
CUSIP: 56155L108
Q3 2018 13F Holders as of 30 Sep 2018
- Security type / class
- Equity / Common Stock, $0.01 par value
- Total 13F shares
- 35,050,749
- Total 13F value
- $1,021,370,214
- Share change
- -1,770,047
- Put/Call ratio
- 116%
- SEC-reported price per share
- $29.10
- Number of holders
- 135
- Value change
- -$60,906,238
- Number of buys
- 82
- Number of sells
- 81
- Shares outstanding
- 48,179,010
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2018
Institutions
135
Top holders
10
TUSK full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2018
Previous quarter: Q2 2018
MAMMOTH ENERGY SERVICES, INC. SEC filings
MAMMOTH ENERGY SERVICES, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 56155L108
Recent filing periods:
Ownership snapshot
Top reported holders of TUSK - MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
WEXFORD CAPITAL LP
Disclosed value leader
WEXFORD CAPITAL LP
Comparable rows
15/15
Latest evidence
30 Jun 2018
13F
Lead comparable stake: 49%
Showing 1-6 of 15 holder rows.
Quick read
WEXFORD CAPITAL LP leads the comparable SEC ownership view at 49%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens WEXFORD CAPITAL LP's linked filing trail.
Comparable ownership
Top 5
WEXFORD CAPITAL LP
49%
JANUS HENDERSON GROUP PLC
2.7%
PRINCIPAL FINANCIAL GROUP INC
1.6%
BlackRock Finance, Inc.
1.4%
MILLENNIUM MANAGEMENT LLC
1.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| WEXFORD CAPITAL LP |
13F
Company
|
49%
|
$808,106,000
23,795,804 shares
|
— | 30 Jun 2018 |
| JANUS HENDERSON GROUP PLC |
13F
Company
|
2.7%
|
$43,688,000
1,286,416 shares
|
— | 30 Jun 2018 |
| PRINCIPAL FINANCIAL GROUP INC |
13F
Company
|
1.6%
|
$26,898,000
792,073 shares
|
— | 30 Jun 2018 |
| BlackRock Finance, Inc. |
13F
Company
|
1.4%
|
$23,295,000
685,958 shares
|
— | 30 Jun 2018 |
| MILLENNIUM MANAGEMENT LLC |
13F
Company
|
1.3%
|
$21,124,000
622,038 shares
|
— | 30 Jun 2018 |
| VANGUARD GROUP INC |
13F
Company
|
1.2%
|
$20,451,000
602,197 shares
|
— | 30 Jun 2018 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2018
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
135
Shares
35,050,749
Rows available
135
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2018 vs Q2 2018 Across Filers
Q2 2018 holders
144
Q3 2018 holders
135
Holder diff
-9
| Investor | Q2 2018 Shares | Q3 2018 Shares | Share Diff | Share Chg % | Q2 2018 value | Q3 2018 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend