Vault-13

MARINUS PHARMACEUTICALS INC MRNS

COM NEW · Common Stock · CUSIP 56854Q200

0 institutional holders -54 vs Q4 2024
—reported value*
0 new 0 added 0 reduced 52 sold out net sold ≈ $14.4m (-26.8m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable.

Trends to Q1 2025

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 69Q4 22: 75Q1 23: 87Q2 23: 107Q3 23: 105Q4 23: 106Q1 24: 113Q2 24: 91Q3 24: 77Q4 24: 54Q1 25: 00Q3 22Q1 23Q3 23Q1 24Q3 24Q1 25
Numbers
QuarterHolders
Q3 202269
Q4 202275
Q1 202387
Q2 2023107
Q3 2023105
Q4 2023106
Q1 2024113
Q2 202491
Q3 202477
Q4 202454
Q1 20250

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q2 23: 65 bought or addedQ2 23: 50 cut or sold outQ3 23: 58 bought or addedQ3 23: 49 cut or sold outQ3 23Q4 23: 53 bought or addedQ4 23: 52 cut or sold outQ1 24: 60 bought or addedQ1 24: 48 cut or sold outQ1 24Q2 24: 54 bought or addedQ2 24: 82 cut or sold outQ3 24: 31 bought or addedQ3 24: 52 cut or sold outQ3 24Q4 24: 21 bought or addedQ4 24: 53 cut or sold outQ1 25: 0 bought or addedQ1 25: 52 cut or sold outQ1 25
Numbers
QuarterBought or addedCut or sold out
Q2 20236550
Q3 20235849
Q4 20235352
Q1 20246048
Q2 20245482
Q3 20243152
Q4 20242153
Q1 2025052

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$200k$400k$600kQ2 24 calls: $406.2kQ2 24 puts: $87.1kQ2 24P/C 0.21Q3 24 calls: $397.9kQ3 24 puts: $143.6kQ3 24P/C 0.36Q4 24 calls: $227.5kQ4 24 puts: $11.8kQ4 24P/C 0.05Q1 25 calls: $0Q1 25 puts: $0Q1 25P/C —
Numbers
QuarterCallsPutsP/C
Q2 2024$406.2k$87.1k0.21
Q3 2024$397.9k$143.6k0.36
Q4 2024$227.5k$11.8k0.05
Q1 2025$0$0—

Biggest buyers

None

Biggest sellers

Beryl Capital Management LLC Sold out -4,227,460-4.2m
MORGAN STANLEY Sold out -3,299,229-3.3m
Bain Capital Life Sciences Investors, LLC Sold out -2,693,380-2.7m
Aberdeen Group plc Sold out -2,658,527-2.7m
VANGUARD GROUP INC Sold out -2,596,768-2.6m
Woodline Partners LP Sold out -2,335,681-2.3m
GSA CAPITAL PARTNERS LLP Sold out -1,837,491-1.8m
TANG CAPITAL MANAGEMENT LLC Sold out -1,641,945-1.6m
BlackRock, Inc. Sold out -883,675-883.7k
ACADIAN ASSET MANAGEMENT LLC Sold out -696,740-696.7k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
SUVRETTA CAPITAL MANAGEMENT, LLC 13G · passive investor +1.7 pts · filed 2025-02-11 5.5% +1.7 pts 3.0m 2025-02-11

Holders, Q1 2025

#ManagerLocationShares Value% of their portfolioChangeShares change