Security key
56854Q200
MARINUS PHARMACEUTICALS, INC. - COMMON STOCK (MRNS)
CUSIP: 56854Q200
Q1 2021 13F Holders as of 31 Mar 2021
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 31,028,457
- Total 13F value
- $480,277,396
- Share change
- +1,535,414
- Put/Call ratio
- 354%
- SEC-reported price per share
- $15.48
- Number of holders
- 85
- Value change
- +$31,148,764
- Number of buys
- 58
- Number of sells
- 28
- 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
Q1 2021
Institutions
85
Top holders
10
MRNS full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2021
Previous quarter: Q4 2020
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
31 Dec 2020
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%
Venrock Adviser, LLC
4.7%
Boxer Capital, LLC
4.4%
BlackRock Finance, Inc.
3.8%
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%
|
$44,143,000
3,618,334 shares
|
— | 31 Dec 2020 |
| Avoro Capital Advisors LLC |
13F
Company
|
5.9%
|
$39,432,000
3,232,142 shares
|
— | 31 Dec 2020 |
| Venrock Adviser, LLC |
13F
Company
|
4.7%
|
$31,585,000
2,588,941 shares
|
— | 31 Dec 2020 |
| Boxer Capital, LLC |
13F
Company
|
4.4%
|
$29,280,000
2,400,000 shares
|
— | 31 Dec 2020 |
| BlackRock Finance, Inc. |
13F
Company
|
3.8%
|
$25,378,000
2,080,091 shares
|
— | 31 Dec 2020 |
| 683 Capital Management, LLC |
13F
Company
|
3.3%
|
$22,218,000
1,821,149 shares
|
— | 31 Dec 2020 |
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 Q1 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
85
Shares
31,028,457
Rows available
85
| 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 Q1 2021 vs Q4 2020 Across Filers
Q4 2020 holders
82
Q1 2021 holders
85
Holder diff
3
| Investor | Q4 2020 Shares | Q1 2021 Shares | Share Diff | Share Chg % | Q4 2020 value | Q1 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend