Vault-13

SEANERGY MARITIME HLDGS CORP SHIP

SHS · Common Stock · CUSIP Y73760400

76 institutional holders +10 vs Q1 2026
5,131,3115.1m shares reported held*
$68.9mreported value*
18 new 18 added 31 reduced 8 sold out net sold ≈ $2.7m (-199.1k 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. Implied quarter-end price ≈ $13.43. Options: 4 managers hold calls ($537.2k notional), 3 hold puts ($2.6m).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q1 23: 20Q2 23: 21Q3 23: 23Q4 23: 34Q1 24: 46Q2 24: 57Q3 24: 55Q4 24: 59Q1 25: 40Q2 25: 34Q3 25: 46Q4 25: 49Q1 26: 66Q2 26: 7676Q1 23Q4 23Q3 24Q2 25Q2 26
Numbers
QuarterHolders
Q1 202320
Q2 202321
Q3 202323
Q4 202334
Q1 202446
Q2 202457
Q3 202455
Q4 202459
Q1 202540
Q2 202534
Q3 202546
Q4 202549
Q1 202666
Q2 202676

Buyers vs sellers

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

Bought or addedCut or sold out
50050Q3 24: 24 bought or addedQ3 24: 35 cut or sold outQ4 24: 31 bought or addedQ4 24: 26 cut or sold outQ4 24Q1 25: 15 bought or addedQ1 25: 38 cut or sold outQ2 25: 14 bought or addedQ2 25: 25 cut or sold outQ2 25Q3 25: 28 bought or addedQ3 25: 13 cut or sold outQ4 25: 27 bought or addedQ4 25: 25 cut or sold outQ4 25Q1 26: 48 bought or addedQ1 26: 17 cut or sold outQ2 26: 36 bought or addedQ2 26: 39 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20242435
Q4 20243126
Q1 20251538
Q2 20251425
Q3 20252813
Q4 20252725
Q1 20264817
Q2 20263639

Calls vs puts

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

CallsPuts
$0$2m$4m$6mQ3 25 calls: $402.2kQ3 25 puts: $2.9mQ3 25P/C 7.16Q4 25 calls: $157.8kQ4 25 puts: $4.6mQ4 25P/C 29.14Q1 26 calls: $636.5kQ1 26 puts: $5.0mQ1 26P/C 7.92Q2 26 calls: $537.2kQ2 26 puts: $2.6mQ2 26P/C 4.88
Numbers
QuarterCallsPutsP/C
Q3 2025$402.2k$2.9m7.16
Q4 2025$157.8k$4.6m29.14
Q1 2026$636.5k$5.0m7.92
Q2 2026$537.2k$2.6m4.88

Biggest buyers

Cambridge Investment Research Advisors, Inc. Added +90,063+90.1k
Point Nemo Capital, LLC New +86,535+86.5k
Janney Montgomery Scott LLC New +72,961+73.0k
SIERRA SUMMIT ADVISORS LLC New +67,362+67.4k
JPMORGAN CHASE & CO Added +59,365+59.4k
PDT Partners, LLC Added +56,683+56.7k
Qube Research & Technologies Ltd Added +47,425+47.4k
MARSHALL WACE, LLP Added +45,603+45.6k
Marnell Management LLC Added +39,046+39.0k
LPL Financial LLC New +36,865+36.9k

Biggest sellers

ACADIAN ASSET MANAGEMENT LLC Reduced -113,197-113.2k
Point72 Asset Management, L.P. Reduced -94,229-94.2k
Jump Financial, LLC Reduced -78,543-78.5k
D. E. Shaw & Co., Inc. Reduced -75,536-75.5k
RAYMOND JAMES FINANCIAL INC Reduced -62,632-62.6k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced -62,359-62.4k
Squarepoint Ops LLC Reduced -62,313-62.3k
Numerai GP LLC Reduced -61,299-61.3k
GOLDMAN SACHS GROUP INC Reduced -56,615-56.6k
RENAISSANCE TECHNOLOGIES LLC Reduced -43,200-43.2k

Biggest calls

CITADEL ADVISORS LLC Reduced $331.7k24.7k shares
JANE STREET GROUP, LLC New $184.0k13.7k shares
GROUP ONE TRADING LLC New $18.8k1.4k shares
SIMPLEX TRADING, LLC Reduced $2.7k200 shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $2.3m174.0k shares
CITADEL ADVISORS LLC Reduced $170.6k12.7k shares
SIMPLEX TRADING, LLC Reduced $116.8k8.7k 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
Tsantanis Stamatios 13D · may seek influence +1.3 pts · filed 2026-03-31 9.6% +1.3 pts 2.1m≈ $28.0m 2026-03-31
Economou George 13D · may seek influence filed 2026-03-16
Stated purposeItem 4 of the Initial 13D is hereby supplemented as set forth below. "As previously disclosed, on March 4, 2024, Sphinx, one of the Reporting Persons, commenced litigation in the Republic of the Marshall Islands against Stamatis Tsantanis, Christina Anagnostara, Dimitrios Anagnostopoulos, Elias Culucundis, Ioannis (John) Kartsonas and the Issuer by filing a complaint in the High Court of the Republic of the Marshall Islands (the "High Court"), seeking, among other things, to void and cancel the Series B Preferred Stock issued to Mr. Tsantanis, to cancel the certificate of designation for the Series B Preferred Stock, to prohibit Mr. Tsantanis from exercising the voting rights of the Series B Preferred Stock and to prohibit the Issuer from recognizing any such votes purportedly cast. The … Full filing
8.8% 1.8m≈ $24.8m 2026-03-16

Fell to 5% or below in the last year: Konstantakopoulos Konstantinos (4.9%, 2026-09-21)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
202Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 1 sellingQ3 26: 0 buyingQ3 26: 2 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20260—0——
Q2 20260—1$49.8k—
Q3 20260—2$306.7k—
DateInsiderTradeSharesPrice ValueTheir holding
2026-08-06 Anagnostara Christina Director Sold 15,000 $17.19 $257.9k15.0k shares -8%
2026-07-13 Gyftakis Stavros Officer Sold 3,300 $14.81 $48.9k3.3k shares -1%
2026-04-06 Gyftakis Stavros Officer Sold 3,570 $13.95 $49.8k3.6k shares -2%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 757,938757.9k $10.2m $10.2m 0.00% Reduced -56.6k -56,615
2 RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio NEW YORK, NY 609,100609.1k $8.2m $8.2m 0.01% Reduced -43.2k -43,200
3 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 542,398542.4k $7.3m $7.3m 0.01% Reduced -14.1k -14,058
4 Walleye Capital LLC 0.02% of their portfolio NEW YORK, NY 302,380302.4k $4.1m $4.1m 0.02% Added +14.9k +14,871
5 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 222,391222.4k $3.0m $3.0m 0.00% Reduced -113.2k -113,197
6 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 219,950219.9k $3.0m $3.0m 0.00% Added +45.6k +45,603
7 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 218,175218.2k $2.9m $2.9m 0.00% Reduced -15.5k -15,511
8 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 161,648161.6k $2.2m $2.2m 0.00% Added +1.7k +1,676
9 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 136,680136.7k $1.8m $1.8m 0.00% Added +47.4k +47,425
10 PDT Partners, LLC 0.09% of their portfolio New York, NY 125,189125.2k $1.7m $1.7m 0.09% Added +56.7k +56,683
11 Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio FAIRFIELD, IA 108,208108.2k $1.5m $1.5m 0.00% Added +90.1k +90,063
12 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 105,185105.2k $1.4m $1.4m 0.00% Added +15.3k +15,339
13 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 103,852103.9k $1.4m $1.4m 0.00% Added +59.4k +59,365
14 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 94,65294.7k $1.3m $1.3m 0.00% Reduced -1.5k -1,483
15 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 90,35490.4k $1.2m $1.2m 0.00% Reduced -32.8k -32,759
16 Point Nemo Capital, LLC 0.59% of their portfolio DRIPPING SPRINGS, TX 86,53586.5k $1.2m $1.2m 0.59% New
17 Marnell Management LLC 0.54% of their portfolio FARMINGTON HILLS, MI 78,60578.6k $1.1m $1.1m 0.54% Added +39.0k +39,046
18 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 78,37278.4k $1.1m $1.1m 0.00% Reduced -94.2k -94,229
19 Janney Montgomery Scott LLC 0.00% of their portfolio PHILADELPHIA, PA 72,96173.0k $980.0k $980.0k 0.00% New
20 Campbell & CO Investment Adviser LLC 0.05% of their portfolio BALTIMORE, MD 68,11468.1k $914.8k $914.8k 0.05% Added +26.3k +26,336
21 SIERRA SUMMIT ADVISORS LLC 0.10% of their portfolio INCLINE VILLAGE, NV 67,36267.4k $904.7k $904.7k 0.10% New
22 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 50,32050.3k $675.8k $675.8k 0.00% Reduced -62.4k -62,359
23 Engineers Gate Manager LP 0.01% of their portfolio NEW YORK, NY 49,87149.9k $669.8k $669.8k 0.01% Reduced -29.5k -29,488
24 SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio BALA CYNWYD, PA 48,43148.4k $650.4k $650.4k 0.01% Added +20.4k +20,428
25 Numerai GP LLC 0.05% of their portfolio SAN FRANCISCO, CA 47,76947.8k $641.5k $641.5k 0.05% Reduced -61.3k -61,299
26 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio BOSTON, MA 44,66044.7k $599.8k $599.8k 0.00% Reduced -37.9k -37,897
27 Triumph Capital Management 0.10% of their portfolio DENVER, CO 41,13241.1k $552.4k $552.4k 0.10% Reduced -353 -353
28 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 36,86536.9k $495.1k $495.1k 0.00% New
29 BlackRock, Inc. 0.00% of their portfolio New York, NY 35,30635.3k $474.2k $474.2k 0.00% Added +462 +462
30 WINTON GROUP Ltd 0.01% of their portfolio LONDON, X0 32,81032.8k $440.6k $440.6k 0.01% Reduced -11.2k -11,193
31 Jump Financial, LLC 0.00% of their portfolio Chicago, IL 32,55732.6k $437.2k $437.2k 0.00% Reduced -78.5k -78,543
32 Centiva Capital, LP 0.01% of their portfolio New York, NY 32,39932.4k $435.1k $435.1k 0.01% Reduced -30.1k -30,122
33 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 28,23728.2k $384.9k $384.9k 0.00% Reduced -756 -756
34 R Squared Ltd 0.20% of their portfolio HONG KONG, K3 27,97628.0k $375.7k $375.7k 0.20% Reduced -1.1k -1,086
35 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 27,28527.3k $366.4k $366.4k 0.00% Reduced -22.2k -22,174
36 NAVELLIER & ASSOCIATES INC 0.03% of their portfolio Reno, NV 26,45626.5k $355.3k $355.3k 0.03% New
37 EntryPoint Capital, LLC 0.09% of their portfolio NEW YORK, NY 26,26426.3k $352.7k $352.7k 0.09% New
38 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 21,55621.6k $289.5k $289.5k 0.00% New
39 Cetera Investment Advisers 0.00% of their portfolio SCHAUMBURG, IL 19,66019.7k $264.0k $264.0k 0.00% Reduced -844 -844
40 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 19,54719.5k $262.0k $262.0k 0.00% Added +8.6k +8,565
41 RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio ST. PETERSBURG, FL 18,68818.7k $251.0k $251.0k 0.00% Reduced -62.6k -62,632
42 nVerses Capital, LLC 0.36% of their portfolio WELLINGTON, FL 17,46617.5k $234.6k $234.6k 0.36% Reduced -2.3k -2,285
43 Semanteon Capital Management, LP 0.99% of their portfolio NEWTON, MA 16,33016.3k $219.3k $219.3k 0.99% Added +3.0k +2,993
44 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 15,40815.4k $206.9k $206.9k 0.00% Unchanged
45 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 14,81614.8k $199.0k $199.0k 0.00% Reduced -75.5k -75,536
46 Virtu Financial LLC 0.01% of their portfolio New York, NY 14,70614.7k $197.0k $197.0k 0.01% New
47 XTX Topco Ltd 0.00% of their portfolio LONDON, X0 14,67214.7k $197.0k $197.0k 0.00% Reduced -11.6k -11,599
48 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 13,07013.1k $175.5k $175.5k 0.00% Reduced -62.3k -62,313
49 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 12,32812.3k $165.6k $165.6k 0.00% Added +28 +28
50 TRUIST FINANCIAL CORP 0.00% of their portfolio CHARLOTTE, NC 12,20012.2k $163.8k $163.8k 0.00% Reduced -800 -800
51 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 11,83611.8k $159.0k $159.0k 0.00% Unchanged
52 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 11,75811.8k $157.9k $157.9k 0.00% New
53 MANGROVE PARTNERS IM, LLC 0.01% of their portfolio Greenwich, CT 11,54911.5k $155.1k $155.1k 0.01% New
54 MACKENZIE FINANCIAL CORP 0.00% of their portfolio TORONTO ONTARIO, A6 10,15510.2k $136.4k $136.4k 0.00% Reduced -8.7k -8,705
55 CenterBook Partners LP 0.01% of their portfolio GREENWICH, CT 10,03210.0k $134.7k $134.7k 0.01% New
56 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 5,4235.4k $72.8k $72.8k 0.00% New
57 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 5,2015.2k $69.8k $69.8k 0.00% Unchanged
58 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 3,1833.2k $42.7k $42.7k 0.00% Reduced -3.3k -3,259
59 Founders Capital Management 0.01% of their portfolio HOUSTON, TX 2,0002.0k $26.9k $26.9k 0.01% Unchanged
60 HUNTINGTON NATIONAL BANK 0.00% of their portfolio COLUMBUS, OH 1,7001.7k $22.8k $22.8k 0.00% Unchanged
61 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 1,6261.6k $23.0k $23.0k 0.00% New
62 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 1,5681.6k $21.1k $21.1k 0.00% Added +1.3k +1,267
63 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 1,3641.4k $18.3k $18.3k 0.00% Unchanged
64 LANARK FINANCIAL, INC. 0.00% of their portfolio BIRMINGHAM, AL 1,2661.3k $17.0k $17.0k 0.00% New
65 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 1,2021.2k $16.0k $16.0k 0.00% Added +472 +472
66 Strategic Advocates LLC 0.03% of their portfolio SACRAMENTO, CA 564564 $7.6k $7.6k 0.03% New
67 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 507507 $6.8k $6.8k 0.00% Added +7 +7
68 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 500500 $6.7k $6.7k 0.00% Reduced -2.2k -2,229
69 Strive Financial Group ,LLC 0.00% of their portfolio CARMEL, IN 500500 $6.7k $6.7k 0.00% Unchanged
70 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 205205 $2.8k $2.8k 0.00% Unchanged
71 Clearstead Advisors, LLC 0.00% of their portfolio CLEVELAND, OH 105105 $1.4k $1.4k 0.00% New
72 Ameritas Advisory Services, LLC 0.00% of their portfolio Lincoln, NE 100100 $1.3k $1.3k 0.00% New
73 Key Capital Management, INC 0.00% of their portfolio HENDERSONVILLE, TN 37075, TN 6969 $927 $927 0.00% Unchanged
74 UBS Group AG 0.00% of their portfolio ZURICH, V8 3131 $417 $417 0.00% Reduced -2.1k -2,119
75 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 3030 $403 $403 0.00% Reduced -3.4k -3,441
76 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 33 $40 $40 0.00% New