Security key
56854Q200
MARINUS PHARMACEUTICALS, INC. - COMMON STOCK (MRNS)
CUSIP: 56854Q200
Q3 2021 13F Holders as of 30 Sep 2021
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 31,795,764
- Total 13F value
- $361,957,260
- Share change
- +398,214
- Put/Call ratio
- 193%
- SEC-reported price per share
- $11.38
- Number of holders
- 78
- Value change
- -$2,691,074
- Number of buys
- 28
- Number of sells
- 32
- Shares outstanding
- 54,731,500
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 2021
Institutions
78
Top holders
10
MRNS full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2021
Previous quarter: Q2 2021
MARINUS PHARMACEUTICALS, INC. SEC filings
MARINUS PHARMACEUTICALS, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 56854Q200
Recent filing periods:
Ownership snapshot
Top reported holders of MRNS - MARINUS PHARMACEUTICALS, INC. - COMMON STOCK (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
Lion Point Capital, LP
Disclosed value leader
Lion Point Capital, LP
Comparable rows
15/15
Latest evidence
30 Jun 2021
13F
Lead comparable stake: 6.6%
Showing 1-6 of 15 holder rows.
Quick read
Lion Point Capital, LP leads the comparable SEC ownership view at 6.6%.
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 Lion Point Capital, LP's linked filing trail.
Comparable ownership
Top 5
Lion Point Capital, LP
6.6%
Avoro Capital Advisors LLC
5.9%
BlackRock Finance, Inc.
5.5%
Venrock Adviser, LLC
4.8%
Boxer Capital, LLC
4.4%
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 |
|---|---|---|---|---|---|
| Lion Point Capital, LP |
13F
Company
|
6.6%
|
$65,152,000
3,631,694 shares
|
— | 30 Jun 2021 |
| Avoro Capital Advisors LLC |
13F
Company
|
5.9%
|
$58,036,000
3,235,000 shares
|
— | 30 Jun 2021 |
| BlackRock Finance, Inc. |
13F
Company
|
5.5%
|
$54,090,000
3,015,028 shares
|
— | 30 Jun 2021 |
| Venrock Adviser, LLC |
13F
Company
|
4.8%
|
$47,394,000
2,641,809 shares
|
— | 30 Jun 2021 |
| Boxer Capital, LLC |
13F
Company
|
4.4%
|
$43,056,000
2,400,000 shares
|
— | 30 Jun 2021 |
| 683 Capital Management, LLC |
13F
Company
|
3.5%
|
$34,623,000
1,929,929 shares
|
— | 30 Jun 2021 |
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 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
78
Shares
31,795,764
Rows available
78
| 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 2021 vs Q2 2021 Across Filers
Q2 2021 holders
79
Q3 2021 holders
78
Holder diff
-1
| Investor | Q2 2021 Shares | Q3 2021 Shares | Share Diff | Share Chg % | Q2 2021 value | Q3 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend