SEANERGY MARITIME HLDGS CORP SHIP
SHS · Common Stock · CUSIP Y73760400
- SectorIndustrials
- IndustryDeep Sea Foreign Transportation of Freight
- FilingsSEC EDGAR
* 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
Numbers
| Quarter | Holders |
|---|---|
| Q1 2023 | 20 |
| Q2 2023 | 21 |
| Q3 2023 | 23 |
| Q4 2023 | 34 |
| Q1 2024 | 46 |
| Q2 2024 | 57 |
| Q3 2024 | 55 |
| Q4 2024 | 59 |
| Q1 2025 | 40 |
| Q2 2025 | 34 |
| Q3 2025 | 46 |
| Q4 2025 | 49 |
| Q1 2026 | 66 |
| Q2 2026 | 76 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 24 | 35 |
| Q4 2024 | 31 | 26 |
| Q1 2025 | 15 | 38 |
| Q2 2025 | 14 | 25 |
| Q3 2025 | 28 | 13 |
| Q4 2025 | 27 | 25 |
| Q1 2026 | 48 | 17 |
| Q2 2026 | 36 | 39 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $402.2k | $2.9m | 7.16 |
| Q4 2025 | $157.8k | $4.6m | 29.14 |
| Q1 2026 | $636.5k | $5.0m | 7.92 |
| Q2 2026 | $537.2k | $2.6m | 4.88 |
Biggest buyers
| Cambridge Investment Research Advisors, Inc. | Added | +90.1k |
| Point Nemo Capital, LLC | New | +86.5k |
| Janney Montgomery Scott LLC | New | +73.0k |
| SIERRA SUMMIT ADVISORS LLC | New | +67.4k |
| JPMORGAN CHASE & CO | Added | +59.4k |
| PDT Partners, LLC | Added | +56.7k |
| Qube Research & Technologies Ltd | Added | +47.4k |
| MARSHALL WACE, LLP | Added | +45.6k |
| Marnell Management LLC | Added | +39.0k |
| LPL Financial LLC | New | +36.9k |
Biggest sellers
| ACADIAN ASSET MANAGEMENT LLC | Reduced | -113.2k |
| Point72 Asset Management, L.P. | Reduced | -94.2k |
| Jump Financial, LLC | Reduced | -78.5k |
| D. E. Shaw & Co., Inc. | Reduced | -75.5k |
| RAYMOND JAMES FINANCIAL INC | Reduced | -62.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -62.4k |
| Squarepoint Ops LLC | Reduced | -62.3k |
| Numerai GP LLC | Reduced | -61.3k |
| GOLDMAN SACHS GROUP INC | Reduced | -56.6k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -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.
| Holder | Stake |
|---|---|
| Tsantanis Stamatios 13D · may seek influence +1.3 pts · filed 2026-03-31 | 9.6% |
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% |
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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 1 | $49.8k | — |
| Q3 2026 | 0 | — | 2 | $306.7k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-06 | Anagnostara Christina Director | Sold | $257.9k15.0k shares |
| 2026-07-13 | Gyftakis Stavros Officer | Sold | $48.9k3.3k shares |
| 2026-04-06 | Gyftakis Stavros Officer | Sold | $49.8k3.6k shares |
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
| Manager | Shares | Change |
|---|---|---|
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 757.9k $10.2m | Reduced -56.6k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 609.1k $8.2m | Reduced -43.2k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 542.4k $7.3m | Reduced -14.1k |
| Walleye Capital LLC 0.02% of their portfolio | 302.4k $4.1m | Added +14.9k |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 222.4k $3.0m | Reduced -113.2k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 219.9k $3.0m | Added +45.6k |
| MORGAN STANLEY 0.00% of their portfolio | 218.2k $2.9m | Reduced -15.5k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 161.6k $2.2m | Added +1.7k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 136.7k $1.8m | Added +47.4k |
| PDT Partners, LLC 0.09% of their portfolio | 125.2k $1.7m | Added +56.7k |
| Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio | 108.2k $1.5m | Added +90.1k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 105.2k $1.4m | Added +15.3k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 103.9k $1.4m | Added +59.4k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 94.7k $1.3m | Reduced -1.5k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 90.4k $1.2m | Reduced -32.8k |
| Point Nemo Capital, LLC 0.59% of their portfolio | 86.5k $1.2m | New |
| Marnell Management LLC 0.54% of their portfolio | 78.6k $1.1m | Added +39.0k |
| Point72 Asset Management, L.P. 0.00% of their portfolio | 78.4k $1.1m | Reduced -94.2k |
| Janney Montgomery Scott LLC 0.00% of their portfolio | 73.0k $980.0k | New |
| Campbell & CO Investment Adviser LLC 0.05% of their portfolio | 68.1k $914.8k | Added +26.3k |
| SIERRA SUMMIT ADVISORS LLC 0.10% of their portfolio | 67.4k $904.7k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 50.3k $675.8k | Reduced -62.4k |
| Engineers Gate Manager LP 0.01% of their portfolio | 49.9k $669.8k | Reduced -29.5k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio | 48.4k $650.4k | Added +20.4k |
| Numerai GP LLC 0.05% of their portfolio | 47.8k $641.5k | Reduced -61.3k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 44.7k $599.8k | Reduced -37.9k |
| Triumph Capital Management 0.10% of their portfolio | 41.1k $552.4k | Reduced -353 |
| LPL Financial LLC 0.00% of their portfolio | 36.9k $495.1k | New |
| BlackRock, Inc. 0.00% of their portfolio | 35.3k $474.2k | Added +462 |
| WINTON GROUP Ltd 0.01% of their portfolio | 32.8k $440.6k | Reduced -11.2k |
| Jump Financial, LLC 0.00% of their portfolio | 32.6k $437.2k | Reduced -78.5k |
| Centiva Capital, LP 0.01% of their portfolio | 32.4k $435.1k | Reduced -30.1k |
| STATE STREET CORP 0.00% of their portfolio | 28.2k $384.9k | Reduced -756 |
| R Squared Ltd 0.20% of their portfolio | 28.0k $375.7k | Reduced -1.1k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 27.3k $366.4k | Reduced -22.2k |
| NAVELLIER & ASSOCIATES INC 0.03% of their portfolio | 26.5k $355.3k | New |
| EntryPoint Capital, LLC 0.09% of their portfolio | 26.3k $352.7k | New |
| NewEdge Advisors, LLC 0.00% of their portfolio | 21.6k $289.5k | New |
| Cetera Investment Advisers 0.00% of their portfolio | 19.7k $264.0k | Reduced -844 |
| HRT FINANCIAL LP 0.00% of their portfolio | 19.5k $262.0k | Added +8.6k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 18.7k $251.0k | Reduced -62.6k |
| nVerses Capital, LLC 0.36% of their portfolio | 17.5k $234.6k | Reduced -2.3k |
| Semanteon Capital Management, LP 0.99% of their portfolio | 16.3k $219.3k | Added +3.0k |
| BARCLAYS PLC 0.00% of their portfolio | 15.4k $206.9k | Unchanged |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 14.8k $199.0k | Reduced -75.5k |
| Virtu Financial LLC 0.01% of their portfolio | 14.7k $197.0k | New |
| XTX Topco Ltd 0.00% of their portfolio | 14.7k $197.0k | Reduced -11.6k |
| Squarepoint Ops LLC 0.00% of their portfolio | 13.1k $175.5k | Reduced -62.3k |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 12.3k $165.6k | Added +28 |
| TRUIST FINANCIAL CORP 0.00% of their portfolio | 12.2k $163.8k | Reduced -800 |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 11.8k $159.0k | Unchanged |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 11.8k $157.9k | New |
| MANGROVE PARTNERS IM, LLC 0.01% of their portfolio | 11.5k $155.1k | New |
| MACKENZIE FINANCIAL CORP 0.00% of their portfolio | 10.2k $136.4k | Reduced -8.7k |
| CenterBook Partners LP 0.01% of their portfolio | 10.0k $134.7k | New |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 5.4k $72.8k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 5.2k $69.8k | Unchanged |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 3.2k $42.7k | Reduced -3.3k |
| Founders Capital Management 0.01% of their portfolio | 2.0k $26.9k | Unchanged |
| HUNTINGTON NATIONAL BANK 0.00% of their portfolio | 1.7k $22.8k | Unchanged |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 1.6k $23.0k | New |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 1.6k $21.1k | Added +1.3k |
| Federation des caisses Desjardins du Quebec 0.00% of their portfolio | 1.4k $18.3k | Unchanged |
| LANARK FINANCIAL, INC. 0.00% of their portfolio | 1.3k $17.0k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 1.2k $16.0k | Added +472 |
| Strategic Advocates LLC 0.03% of their portfolio | 564 $7.6k | New |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 507 $6.8k | Added +7 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 500 $6.7k | Reduced -2.2k |
| Strive Financial Group ,LLC 0.00% of their portfolio | 500 $6.7k | Unchanged |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 205 $2.8k | Unchanged |
| Clearstead Advisors, LLC 0.00% of their portfolio | 105 $1.4k | New |
| Ameritas Advisory Services, LLC 0.00% of their portfolio | 100 $1.3k | New |
| Key Capital Management, INC 0.00% of their portfolio | 69 $927 | Unchanged |
| UBS Group AG 0.00% of their portfolio | 31 $417 | Reduced -2.1k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 30 $403 | Reduced -3.4k |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 3 $40 | New |