Vault-13

MARINUS PHARMACEUTICALS INC MRNS

COM NEW · Common Stock · CUSIP 56854Q200

107 institutional holders +20 vs Q1 2023
44,264,75644.3m shares reported held*
$480.7mreported value*
42 new 23 added 28 reduced 22 sold out net bought ≈ $38.2m (+3.5m 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 ($4.3m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $10.86. Options: 16 managers hold calls ($11.1m notional), 8 hold puts ($2.0m).

Trends to Q2 2023

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 69Q4 22: 75Q1 23: 87Q2 23: 107107Q3 22Q4 22Q1 23Q2 23
Numbers
QuarterHolders
Q3 202269
Q4 202275
Q1 202387
Q2 2023107

Buyers vs sellers

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

Bought or addedCut or sold out
1000100Q4 22: 50 bought or addedQ4 22: 24 cut or sold outQ4 22Q1 23: 57 bought or addedQ1 23: 36 cut or sold outQ1 23Q2 23: 65 bought or addedQ2 23: 50 cut or sold outQ2 23
Numbers
QuarterBought or addedCut or sold out
Q4 20225024
Q1 20235736
Q2 20236550

Calls vs puts

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

CallsPuts
$0$5m$10m$15mQ3 22 calls: $4.7mQ3 22 puts: $1.5mQ3 22P/C 0.31Q4 22 calls: $5.3mQ4 22 puts: $1.1mQ4 22P/C 0.20Q1 23 calls: $8.9mQ1 23 puts: $994.0kQ1 23P/C 0.11Q2 23 calls: $11.1mQ2 23 puts: $2.0mQ2 23P/C 0.18
Numbers
QuarterCallsPutsP/C
Q3 2022$4.7m$1.5m0.31
Q4 2022$5.3m$1.1m0.20
Q1 2023$8.9m$994.0k0.11
Q2 2023$11.1m$2.0m0.18

Biggest buyers

BlackRock Inc. Added +2,769,357+2.8m
JENNISON ASSOCIATES LLC New +1,865,430+1.9m
STATE STREET CORP Added +747,302+747.3k
ADAGE CAPITAL PARTNERS GP, L.L.C. Added +696,750+696.8k
Ikarian Capital, LLC New +611,932+611.9k
Logos Global Management LP New +525,000+525.0k
GEODE CAPITAL MANAGEMENT, LLC Added +499,839+499.8k
Invesco Ltd. New +429,005+429.0k
BOOTHBAY FUND MANAGEMENT, LLC Added +392,297+392.3k
Ally Bridge Group (NY) LLC New +390,418+390.4k

Biggest sellers

Point72 Asset Management, L.P. Reduced -1,827,819-1.8m
AIGH Capital Management LLC Sold out -1,336,150-1.3m
MILLENNIUM MANAGEMENT LLC Reduced -917,526-917.5k
Woodline Partners LP Reduced -797,411-797.4k
MONTANOVA CAPITAL, LLC Reduced -773,650-773.6k
BARCLAYS PLC Reduced -585,131-585.1k
Lion Point Capital, LP Reduced -362,575-362.6k
Worth Venture Partners, LLC Reduced -301,935-301.9k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced -287,688-287.7k
Jefferies Financial Group Inc. Reduced -249,772-249.8k

Biggest calls

BOOTHBAY FUND MANAGEMENT, LLC New $3.3m300.8k shares
Sofinnova Investments, Inc. New $2.2m200.0k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $1.6m149.3k shares
SIMPLEX TRADING, LLC Added $949.0k87.4k shares
CITADEL ADVISORS LLC Added $620.1k57.1k shares
Caption Management, LLC Unchanged $543.0k50.0k shares
GROUP ONE TRADING LLC Added $495.2k45.6k shares
NOMURA HOLDINGS INC Reduced $371.4k34.2k shares
JANE STREET GROUP, LLC New $351.9k32.4k shares
Worth Venture Partners, LLC New $186.4k44.2k shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $1.1m103.8k shares
CITADEL ADVISORS LLC Reduced $305.2k28.1k shares
JANE STREET GROUP, LLC New $170.5k15.7k shares
Walleye Capital LLC Added $167.2k15.4k shares
SIMPLEX TRADING, LLC Added $127.0k11.7k shares
Walleye Trading LLC Added $78.2k7.2k shares
GROUP ONE TRADING LLC New $13.0k1.2k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

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, Q2 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MONTANOVA CAPITAL, LLC 2.36% of their portfolio New York, NY 4,057,6114.1m $44.1m $44.1m 2.36% Reduced -773.6k -773,650
2 BlackRock Inc. 0.00% of their portfolio New York, NY 3,897,7703.9m $42.3m $42.3m 0.00% Added +2.8m +2,769,357
3 EVENTIDE ASSET MANAGEMENT, LLC 0.58% of their portfolio Boston, MA 3,173,1973.2m $34.5m $34.5m 0.58% Unchanged
4 Avoro Capital Advisors LLC 0.46% of their portfolio NEW YORK, NY 3,150,0003.1m $34.2m $34.2m 0.46% Unchanged
5 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.06% of their portfolio Boston, MA 2,731,2502.7m $29.7m $29.7m 0.06% Added +696.8k +696,750
6 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,546,2422.5m $27.7m $27.7m 0.00% Added +361.5k +361,498
7 Lion Point Capital, LP 18.20% of their portfolio NEW YORK, NY 2,257,5212.3m $24.5m $24.5m 18.20% Reduced -362.6k -362,575
8 Bleichroeder LP 4.13% of their portfolio NEW YORK, NY 1,872,4631.9m $20.3m $20.3m 4.13% Unchanged
9 JENNISON ASSOCIATES LLC 0.02% of their portfolio NEW YORK, NY 1,865,4301.9m $20.3m $20.3m 0.02% New
10 GMT Capital Corp 0.64% of their portfolio ATLANTA, GA 1,554,9951.6m $16.9m $16.9m 0.64% Added +373.4k +373,425
11 Bain Capital Life Sciences Investors, LLC 1.60% of their portfolio Boston, MA 1,431,0581.4m $15.5m $15.5m 1.60% Unchanged
12 Point72 Asset Management, L.P. 0.05% of their portfolio STAMFORD, CT 1,325,1811.3m $14.4m $14.4m 0.05% Reduced -1.8m -1,827,819
13 FRANKLIN RESOURCES INC 0.01% of their portfolio San Mateo, CA 1,316,8681.3m $14.3m $14.3m 0.01% Added +291.0k +291,033
14 Sofinnova Investments, Inc. 0.69% of their portfolio Menlo Park, CA 962,619962.6k $10.5m $10.5m 0.69% Reduced -237.8k -237,770
15 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 947,062947.1k $10.3m $10.3m 0.00% Added +499.8k +499,839
16 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 899,278899.3k $9.8m $9.8m 0.00% Added +747.3k +747,302
17 Woodline Partners LP 0.10% of their portfolio San Francisco, CA 800,000800.0k $8.7m $8.7m 0.10% Reduced -797.4k -797,411
18 Assenagon Asset Management S.A. 0.03% of their portfolio SENNINGERBERG, N4 682,491682.5k $7.4m $7.4m 0.03% Unchanged
19 Opaleye Management Inc. 1.62% of their portfolio BOSTON, MA 625,000625.0k $6.8m $6.8m 1.62% Reduced -140.0k -140,000
20 Ikarian Capital, LLC 2.24% of their portfolio DALLAS, TX 611,932611.9k $6.6m $6.6m 2.24% New
21 Logos Global Management LP 0.79% of their portfolio San Francisco, CA 525,000525.0k $5.7m $5.7m 0.79% New
22 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 429,005429.0k $4.7m $4.7m 0.00% New
23 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 421,844421.8k $4.6m $4.6m 0.00% Added +344.5k +344,501
24 BOOTHBAY FUND MANAGEMENT, LLC 0.14% of their portfolio NEW YORK, NY 413,211413.2k $4.5m $4.5m 0.14% Added +392.3k +392,297
25 Tekla Capital Management LLC 0.17% of their portfolio Boston, MA 411,101411.1k $4.5m $4.5m 0.17% Reduced -45.7k -45,679
26 Ally Bridge Group (NY) LLC 5.14% of their portfolio NEW YORK, NY 390,418390.4k $4.2m $4.2m 5.14% New
27 Walleye Capital LLC 0.07% of their portfolio NEW YORK, NY 360,245360.2k $3.9m $3.9m 0.07% Added +329.4k +329,362
28 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 354,748354.7k $3.9m $3.9m 0.01% Added +266.5k +266,521
29 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 302,312302.3k $3.3m $3.3m 0.00% Added +118.9k +118,904
30 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 271,280271.3k $2.9m $2.9m 0.00% New
31 Jefferies Financial Group Inc. 0.06% of their portfolio NEW YORK, NY 254,021254.0k $2.8m $2.8m 0.06% Reduced -249.8k -249,772
32 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 222,484222.5k $2.4m $2.4m 0.01% New
33 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 188,722188.7k $2.1m $2.1m 0.00% Reduced -163.1k -163,106
34 Parkman Healthcare Partners LLC 0.32% of their portfolio STAMFORD, CT 171,075171.1k $1.9m $1.9m 0.32% Reduced -78.9k -78,925
35 Informed Momentum Co LLC 0.34% of their portfolio SOLANA BEACH, CA 170,901170.9k $1.9m $1.9m 0.34% Unchanged
36 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 163,770163.8k $1.8m $1.8m 0.00% Added +111.8k +111,757
37 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 158,338158.3k $1.7m $1.7m 0.00% Reduced -145.4k -145,400
38 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 156,978157.0k $1.7m $1.7m 0.00% New
39 Simplify Asset Management Inc. 0.30% of their portfolio Las Vegas, NV 150,000150.0k $1.6m $1.6m 0.30% Unchanged
40 Schonfeld Strategic Advisors LLC 0.01% of their portfolio NEW YORK, NY 149,477149.5k $1.6m $1.6m 0.01% Added +101.2k +101,227
41 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 139,477139.5k $1.5m $1.5m 0.00% New
42 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 135,065135.1k $1.5m $1.5m 0.00% Added +115.5k +115,496
43 Cubist Systematic Strategies, LLC 0.01% of their portfolio STAMFORD, CT 122,260122.3k $1.3m $1.3m 0.01% Added +122.2k +122,190
44 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 98,77198.8k $1.1m $1.1m 0.00% Reduced -23.1k -23,146
45 SIMPLEX TRADING, LLC 0.04% of their portfolio CHICAGO, IL 91,73591.7k $996.0k $996.0k 0.04% Reduced -19.2k -19,182
46 INTERNATIONAL BIOTECHNOLOGY TRUST PLC 0.30% of their portfolio London, X0 90,00090.0k $977.4k $977.4k 0.30% New
47 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 81,96482.0k $890.1k $890.1k 0.00% New
48 MOORE CAPITAL MANAGEMENT, LP 0.02% of their portfolio NEW YORK, NY 75,00075.0k $814.5k $814.5k 0.02% New
49 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 74,02574.0k $803.9k $803.9k 0.00% New
50 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 66,90266.9k $726.6k $726.6k 0.00% New
51 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 65,52365.5k $711.6k $711.6k 0.00% Reduced -88.6k -88,636
52 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 65,51765.5k $711.5k $711.5k 0.00% Reduced -287.7k -287,688
53 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 62,60062.6k $680.0k $680.0k 0.00% Reduced -68.7k -68,700
54 CANTOR FITZGERALD, L. P. 0.02% of their portfolio NEW YORK, NY 62,52062.5k $679.0k $679.0k 0.02% New
55 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 58,66058.7k $637.0k $637.0k 0.00% New
56 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 57,88457.9k $628.6k $628.6k 0.00% Reduced -585.1k -585,131
57 DENALI ADVISORS LLC 0.20% of their portfolio SAN DIEGO, CA 52,60052.6k $571.2k $571.2k 0.20% Added +43.0k +43,000
58 OCCUDO QUANTITATIVE STRATEGIES LP 0.06% of their portfolio FORT LAUDERDALE, FL 51,71851.7k $561.7k $561.7k 0.06% New
59 Walleye Trading LLC 0.03% of their portfolio NEW YORK, NY 45,22645.2k $491.2k $491.2k 0.03% Added +30.1k +30,083
60 Harvest Investment Services, LLC 0.28% of their portfolio Oakbrook Terrace, IL 44,57244.6k $484.1k $484.1k 0.28% New
61 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 40,28440.3k $437.5k $437.5k 0.00% Added +39.5k +39,536
62 Belvedere Trading LLC 0.13% of their portfolio CHICAGO, IL 37,78337.8k $410.3k $410.3k 0.13% New
63 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 37,30837.3k $405.2k $405.2k 0.00% Reduced -112.0k -112,009
64 UBS Group AG 0.00% of their portfolio ZURICH, V8 35,97336.0k $390.7k $390.7k 0.00% Reduced -48.8k -48,779
65 GRIMES & Co WEALTH MANAGEMENT, LLC 0.01% of their portfolio WESTBOROUGH, MA 34,75134.8k $377.4k $377.4k 0.01% Unchanged
66 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 32,08932.1k $348.5k $348.5k 0.00% Unchanged
67 Graham Capital Management, L.P. 0.01% of their portfolio ROWAYTON, CT 31,16231.2k $338.4k $338.4k 0.01% Reduced -46.9k -46,901
68 Worth Venture Partners, LLC 0.16% of their portfolio FORT LEE, NJ 26,80026.8k $291.0k $291.0k 0.16% Reduced -301.9k -301,935
69 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 26,35626.4k $286.2k $286.2k 0.00% New
70 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 25,99026.0k $282.3k $282.3k 0.00% New
71 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 25,79825.8k $281.0k $281.0k 0.00% Added +6.1k +6,098
72 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 25,22425.2k $273.9k $273.9k 0.00% New
73 Maven Securities LTD 0.04% of their portfolio ST HELIER, Y9 25,00025.0k $271.5k $271.5k 0.04% Reduced -10.0k -10,000
74 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 23,98224.0k $260.4k $260.4k 0.00% New
75 Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio VANCOUVER, A1 23,33523.3k $253.4k $253.4k 0.00% New
76 GROUP ONE TRADING LLC 0.01% of their portfolio CHICAGO, IL 23,00923.0k $249.9k $249.9k 0.01% Reduced -29.1k -29,084
77 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 22,64022.6k $245.9k $245.9k 0.00% New
78 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 20,76720.8k $225.5k $225.5k 0.00% Added +20.5k +20,455
79 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 20,06320.1k $217.9k $217.9k 0.00% New
80 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 19,99420.0k $217.1k $217.1k 0.00% New
81 Engineers Gate Manager LP 0.01% of their portfolio NEW YORK, NY 19,87419.9k $215.8k $215.8k 0.01% New
82 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 19,50019.5k $211.8k $211.8k 0.00% New
83 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 16,57416.6k $180.0k $180.0k 0.00% New
84 Values First Advisors, Inc. 0.11% of their portfolio JOHNSON CITY, TN 16,24516.2k $176.4k $176.4k 0.11% Reduced -2.0k -2,027
85 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 15,69615.7k $170.5k $170.5k 0.00% Reduced -89.6k -89,590
86 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 14,15014.2k $153.7k $153.7k 0.00% New
87 Man Group plc 0.00% of their portfolio LONDON, X0 13,94713.9k $151.5k $151.5k 0.00% New
88 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 13,24013.2k $143.8k $143.8k 0.00% Reduced -917.5k -917,526
89 Campbell & CO Investment Adviser LLC 0.02% of their portfolio BALTIMORE, MD 11,85611.9k $128.8k $128.8k 0.02% New
90 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 7,5547.6k $82.0k $82.0k 0.00% New
91 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 7,4397.4k $81.0k $81.0k 0.00% Added +7.0k +6,983
92 Legal & General Group Plc 0.00% of their portfolio London, X0 6,0366.0k $65.6k $65.6k 0.00% New
93 FMR LLC 0.00% of their portfolio BOSTON, MA 4,4194.4k $48.0k $48.0k 0.00% Reduced -4.4k -4,447
94 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 4,1144.1k $44.7k $44.7k 0.00% New
95 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3,8803.9k $42.1k $42.1k 0.00% Added +1.4k +1,375
96 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 3,8603.9k $41.9k $41.9k 0.00% New
97 Metropolitan Life Insurance Co/NY 0.00% of their portfolio New York, NY 2,7312.7k $29.7k $29.7k 0.00% New
98 Dorsey Wright & Associates 0.01% of their portfolio PASADENA, CA 2,4462.4k $26.6k $26.6k 0.01% New
99 China Universal Asset Management Co., Ltd. 0.00% of their portfolio SHANGHAI, F4 662662 $7.2k $7.2k 0.00% Reduced -10 -10
100 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 524524 $5.7k $5.7k 0.00% Unchanged