INSW Institutional Ownership & Shareholders
INTERNATIONAL SEAWAYS (INSW) is currently held by 368 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $3.12B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of INSW tracked by InsiderSet, reporting ownership valued at approximately $505.15M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $738.37M, representing an estimated gain of +46.17% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 65% of the total disclosed INSW value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Fmr Llc, Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in INTERNATIONAL SEAWAYS (INSW).
This page ranks the largest institutional INSW shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
368
Total Reported Value
$3.12B
Largest Holder
Blackrock, Inc.
Largest Position
$505.15M
Insider Transactions (90d)
13
Latest Filing Quarter
Q2 2026
New Institutional Positions
85
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 6,595,548 | $505,153,040 | $738,371,599 | +$233,218,559 | +46.17% | |
| Fmr Llc | 0.02% | 4,945,517 | $378,777,153 | $553,650,628 | +$174,873,475 | +46.17% | |
| Dimensional Fund Advisors Lp | 0.04% | 3,071,116 | $235,223,187 | $343,811,436 | +$108,588,249 | +46.16% | |
| Vanguard Portfolio Management Llc | 0.01% | 2,281,423 | $174,734,188 | $255,405,305 | +$80,671,117 | +46.17% | |
| American Century Companies Inc | 0.07% | 2,150,403 | $164,699,366 | $240,737,616 | +$76,038,250 | +46.17% | |
| Vanguard Capital Management Llc | 0.00% | 2,091,318 | $160,174,046 | $234,123,050 | +$73,949,004 | +46.17% | |
| Nomura Asset Management International Inc. | 0.21% | 1,803,512 | $138,131,000 | $201,903,168 | +$63,772,168 | +46.17% | |
| State Street Corp | 0.00% | 1,679,953 | $128,667,600 | $188,070,738 | +$59,403,138 | +46.17% | |
| Geode Capital Management, Llc | 0.01% | 1,239,772 | $94,969,014 | $138,792,475 | +$43,823,461 | +46.15% | |
| Morgan Stanley | 0.00% | 789,806 | $60,491,420 | $88,418,782 | +$27,927,362 | +46.17% | |
| Invesco Ltd. | 0.00% | 691,337 | $52,949,502 | $77,395,177 | +$24,445,675 | +46.17% | |
| Hosking Partners Llp | 1.75% | 447,206 | $49,255,269 | $50,064,712 | +$809,443 | +1.64% | |
| Charles Schwab Investment Management Inc | 0.01% | 625,736 | $47,925,120 | $70,051,145 | +$22,126,025 | +46.17% | |
| Castleknight Management Lp | 1.62% | 580,911 | $44,491,973 | $65,032,986 | +$20,541,013 | +46.17% | |
| Northern Trust Corp | 0.00% | 493,676 | $37,810,644 | $55,267,028 | +$17,456,384 | +46.17% | |
| Susquehanna International Group, Llp | 0.03% | 384,035 | $29,413,241 | $42,992,718 | +$13,579,477 | +46.17% | |
| Principal Financial Group Inc | 0.01% | 265,040 | $29,191,506 | $29,671,228 | +$479,722 | +1.64% | |
| Bridgeway Capital Management, Llc | 0.49% | 366,872 | $28,098,726 | $41,071,320 | +$12,972,594 | +46.17% | |
| Frontier Capital Management Co Llc | 0.24% | 336,180 | $25,748,026 | $37,635,351 | +$11,887,325 | +46.17% | |
| Goldman Sachs Group Inc | 0.00% | 321,454 | $24,620,171 | $35,986,775 | +$11,366,604 | +46.17% | |
| Ubs Group Ag | 0.00% | 318,434 | $24,388,861 | $35,648,686 | +$11,259,825 | +46.17% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 304,449 | $23,317,749 | $34,083,066 | +$10,765,317 | +46.17% | |
| Aqr Capital Management Llc | 0.01% | 302,901 | $23,199,189 | $33,909,767 | +$10,710,578 | +46.17% | |
| Victory Capital Management Inc | 0.01% | 286,305 | $21,928,100 | $32,051,845 | +$10,123,745 | +46.17% | |
| Vanguard Fiduciary Trust Co | 0.00% | 276,794 | $21,199,652 | $30,987,088 | +$9,787,436 | +46.17% | |
| Bank Of New York Mellon Corp | 0.00% | 275,262 | $21,082,282 | $30,815,581 | +$9,733,299 | +46.17% | |
| Empowered Funds, Llc | 0.10% | 257,357 | $19,710,973 | $28,811,116 | +$9,100,143 | +46.17% | |
| Baird Financial Group, Inc. | 0.03% | 248,506 | $19,033,124 | $27,820,247 | +$8,787,123 | +46.17% | |
| First Trust Advisors Lp | 0.01% | 218,428 | $16,729,400 | $24,453,015 | +$7,723,615 | +46.17% | |
| Allianz Asset Management Gmbh | 0.01% | 209,350 | $16,034,116 | $23,436,733 | +$7,402,617 | +46.17% | |
| Public Sector Pension Investment Board | 0.04% | 188,717 | $14,453,835 | $21,126,868 | +$6,673,033 | +46.17% | |
| Private Management Group Inc | 0.36% | 178,409 | $13,664,345 | $19,972,888 | +$6,308,543 | +46.17% | |
| Envestnet Asset Management Inc | 0.00% | 174,115 | $13,335,478 | $19,492,174 | +$6,156,696 | +46.17% | |
| Clearbridge Investments, Llc | 0.01% | 163,017 | $12,485,437 | $18,249,753 | +$5,764,316 | +46.17% | |
| Squarepoint Ops Llc | 0.02% | 156,942 | $12,020,188 | $17,569,657 | +$5,549,469 | +46.17% | |
| Bank Of America Corp | 0.00% | 154,503 | $11,833,385 | $17,296,611 | +$5,463,226 | +46.17% | |
| Creative Planning | 0.01% | 88,636 | $9,762,412 | $9,922,800 | +$160,388 | +1.64% | |
| Jpmorgan Chase & Co | 0.00% | 121,382 | $9,592,652 | $13,588,715 | +$3,996,063 | +41.66% | |
| Nuveen, Llc | 0.00% | 123,467 | $9,456,317 | $13,822,131 | +$4,365,814 | +46.17% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | 122,143 | $9,354,932 | $13,673,909 | +$4,318,977 | +46.17% | |
| Federated Hermes, Inc. | 0.01% | 114,230 | $8,748,876 | $12,788,049 | +$4,039,173 | +46.17% | |
| Loomis Sayles & Co L P | 0.01% | 110,138 | $8,435,469 | $12,329,949 | +$3,894,480 | +46.17% | |
| Brookstone Capital Management | 0.08% | 74,253 | $8,178,211 | $8,312,623 | +$134,412 | +1.64% | |
| Legal & General Group Plc | 0.00% | 104,455 | $8,000,208 | $11,693,737 | +$3,693,529 | +46.17% | |
| Aristotle Capital Boston, Llc | 0.53% | 103,734 | $7,944,987 | $11,613,021 | +$3,668,034 | +46.17% | |
| Bessemer Group Inc | 0.01% | 102,940 | $7,884,000 | $11,524,133 | +$3,640,133 | +46.17% | |
| Rhumbline Advisers | 0.01% | 99,271 | $7,603,143 | $11,113,388 | +$3,510,245 | +46.17% | |
| Ameriprise Financial Inc | 0.00% | 96,738 | $7,410,655 | $10,829,819 | +$3,419,164 | +46.14% | |
| Lsv Asset Management | 0.01% | 96,400 | $7,383,000 | $10,791,980 | +$3,408,980 | +46.17% | |
| Tudor Investment Corp Et Al | 0.03% | 91,063 | $6,974,515 | $10,194,503 | +$3,219,988 | +46.17% |
Frequently asked questions about INSW
Who are the largest institutional holders of INSW?
The largest institutional holders of INSW reported in the latest SEC Form 13F filings include Blackrock, Inc., Fmr Llc, Dimensional Fund Advisors Lp, Vanguard Portfolio Management Llc, and American Century Companies Inc. InsiderSet ranks institutional holders by their latest reported INSW position.
What is INSW institutional ownership?
This page tracks INSW positions reported by institutional investment managers through SEC Form 13F. INTERNATIONAL SEAWAYS (INSW) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own INSW?
InsiderSet currently tracks 368 institutional managers reporting INSW holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of INSW shareholders.
How much INSW stock do institutions own?
Institutional investment managers disclosed approximately $3.12B in INSW holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was INSW institutional ownership last updated?
The latest INSW institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional INSW holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its INSW position after the reporting date.
Are institutions buying or selling INSW?
Institutional buying and selling can be analyzed by comparing INSW positions across consecutive 13F reporting periods. InsiderSet's INSW Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View INSW ownership changes.
How has INSW institutional ownership changed over time?
InsiderSet tracks INSW institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.