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MRNS

Marinus Pharmaceuticals, Inc
MRNS

Delisted

MRNS was delisted on the 10th of February, 2025.

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88 hedge funds and large institutions have $378M invested in Marinus Pharmaceuticals, Inc in 2020 Q4 according to their latest regulatory filings, with 24 funds opening new positions, 37 increasing their positions, 16 reducing their positions, and 13 closing their positions.

New
Increased
Maintained
Reduced
Closed

131% more repeat investments, than reductions

Existing positions increased: 37 | Existing positions reduced: 16

85% more first-time investments, than exits

New positions opened: 24 | Existing positions closed: 13

23% more capital invested

Capital invested by funds: $307M → $378M (+$70.4M)

14% more funds holding

Funds holding: 77 → 88 (+11)

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

50% less call options, than puts

Call options by funds: $6.33M | Put options by funds: $12.7M

Holders
88
Holders Change
+11
Holders Change %
+14.29%
% of All Funds
1.56%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
24
Increased
37
Reduced
16
Closed
13
Calls
$6.33M
Puts
$12.7M
Net Calls
-$6.38M
Net Calls Change
-$17.5M

Top Buyers

Rank Fund Capital Flow
1
VA
VR Adviser
New York
+$19.5M
2
RCM
RA Capital Management
Massachusetts
+$18.1M
3
LPC
Lion Point Capital
New York
+$12.5M
4
6CM
683 Capital Management
New York
+$11.8M
5
SCM
Suvretta Capital Management
New York
+$9.07M

Top Sellers

Rank Fund Capital Flow
1
IM
Islet Management
New York
-$8.35M
2
MS
Maven Securities
Jersey
-$7.33M
3
JG
Jefferies Group
New York
-$6.53M
4
Millennium Management
Millennium Management
New York
-$4.33M
5
CM
Caption Management
Oklahoma
-$1.49M
Name Holding Trade Value Shares
Change 		Change in
Stake
LCM
26
Laurion Capital Management
New York
$1.95M +$2.23M +160,161 New
SM
27
Sabby Management
Florida
$1.23M +$1.41M +100,800 New
MIM
28
Monashee Investment Management
Massachusetts
$1.22M +$1.39M +100,000 New
Two Sigma Advisers
29
Two Sigma Advisers
New York
$1.18M -$137K -9,800 -9%
Assenagon Asset Management
30
Assenagon Asset Management
Luxembourg
$1.12M – – –
Bank of New York Mellon
31
Bank of New York Mellon
New York
$1.08M +$322K +23,077 +35%
Victory Capital Management
32
Victory Capital Management
Texas
$1.04M -$193K -13,880 -14%
N
33
Nuveen
North Carolina
$1.02M -$65.3K -4,682 -5%
First Trust Advisors
34
First Trust Advisors
Illinois
$831K -$41.4K -2,973 -4%
Two Sigma Investments
35
Two Sigma Investments
New York
$800K +$687K +49,299 +302%
Dimensional Fund Advisors
36
Dimensional Fund Advisors
Texas
$771K +$407K +29,188 +86%
Goldman Sachs
37
Goldman Sachs
New York
$768K +$436K +31,253 +99%
Charles Schwab
38
Charles Schwab
California
$750K +$55.1K +3,954 +7%
Los Angeles Capital Management
39
Los Angeles Capital Management
California
$719K +$54.4K +3,902 +7%
California Public Employees Retirement System
40
California Public Employees Retirement System
California
$675K -$26.1K -1,873 -3%
SC
41
Saltoro Capital
Texas
$666K +$761K +54,623 New
California State Teachers Retirement System (CalSTRS)
42
California State Teachers Retirement System (CalSTRS)
California
$462K – – –
Millennium Management
43
Millennium Management
New York
$448K -$4.33M -310,295 -89%
Morgan Stanley
44
Morgan Stanley
New York
$417K +$253K +18,153 +113%
Squarepoint
45
Squarepoint
New York
$394K +$276K +19,822 +159%
PAI
46
Palo Alto Investors
California
$382K – – –
Group One Trading
47
Group One Trading
Illinois
$379K +$24.8K +1,782 +6%
State of Wisconsin Investment Board
48
State of Wisconsin Investment Board
Wisconsin
$371K -$53K -3,800 -11%
RhumbLine Advisers
49
RhumbLine Advisers
Massachusetts
$324K +$52.9K +3,797 +17%
DMK
50
David M. Knott
$305K +$349K +25,000 New
1
2
3 4 5

MRNS Hedge Fund Activity: Q4 2020 in Review

88 of the 5,651 institutional investors tracked by Wall St. Rank reported a position in Marinus Pharmaceuticals, Inc (MRNS) for Q4 2020, worth a combined $378M — up 23% from $307M a quarter earlier.

Buyers outnumbered sellers: 24 funds opened new MRNS positions and 13 closed out — a net gain of 11 holders — while 37 added to existing stakes and 16 trimmed.

The largest buyer was VR Adviser, adding an estimated $19.5M. The largest seller was Islet Management, exiting entirely with an estimated $8.35M sold.

  • 88 institutional investors held Marinus Pharmaceuticals, Inc (MRNS) as of Q4 2020, up from 77 in Q3 2020.
  • Funds reported $378M of Marinus Pharmaceuticals, Inc stock for Q4 2020, up 23% quarter-over-quarter.
  • 24 funds opened new Marinus Pharmaceuticals, Inc positions in Q4 2020 and 13 closed out, a net change of +11 holders.
  • The largest Marinus Pharmaceuticals, Inc buyer in Q4 2020 was VR Adviser, an estimated $19.5M added.
  • The largest Marinus Pharmaceuticals, Inc seller in Q4 2020 was Islet Management, an estimated $8.35M sold.

Based on aggregated 13F filings for Q4 2020.