INTERNATIONAL SEAWAYS (INSW) Institutional Shareholders
INTERNATIONAL SEAWAYS (INSW) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $3.08B in INSW holdings during the latest filing period.
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 $721.42M, representing an estimated gain of +42.81% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 66% 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
349
Total Reported Value
$3.08B
Largest Holder
Blackrock, Inc.
Largest Position
$505.15M
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
71
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 | $721,421,040 | +$216,268,000 | +42.81% | |
| Fmr Llc | 0.02% | 4,945,517 | $378,777,153 | $540,940,649 | +$162,163,496 | +42.81% | |
| Dimensional Fund Advisors Lp | 0.04% | 3,071,116 | $235,223,187 | $335,918,668 | +$100,695,481 | +42.81% | |
| Vanguard Portfolio Management Llc | 0.01% | 2,281,423 | $174,734,188 | $249,542,048 | +$74,807,860 | +42.81% | |
| American Century Companies Inc | 0.07% | 2,150,403 | $164,699,366 | $235,211,080 | +$70,511,714 | +42.81% | |
| Vanguard Capital Management Llc | 0.00% | 2,091,318 | $160,174,046 | $228,748,363 | +$68,574,317 | +42.81% | |
| Nomura Asset Management International Inc. | 0.21% | 1,803,512 | $138,131,000 | $197,268,143 | +$59,137,143 | +42.81% | |
| State Street Corp | 0.00% | 1,679,953 | $128,667,600 | $183,753,259 | +$55,085,659 | +42.81% | |
| Geode Capital Management, Llc | 0.01% | 1,239,772 | $94,969,014 | $135,606,261 | +$40,637,247 | +42.79% | |
| Morgan Stanley | 0.00% | 789,806 | $60,491,420 | $86,388,980 | +$25,897,560 | +42.81% | |
| Invesco Ltd. | 0.00% | 691,337 | $52,949,502 | $75,618,441 | +$22,668,939 | +42.81% | |
| Charles Schwab Investment Management Inc | 0.01% | 625,736 | $47,925,120 | $68,443,004 | +$20,517,884 | +42.81% | |
| Hosking Partners Llp | 1.55% | 608,569 | $46,610,300 | $66,565,277 | +$19,954,977 | +42.81% | |
| Castleknight Management Lp | 1.62% | 580,911 | $44,491,973 | $63,540,045 | +$19,048,072 | +42.81% | |
| Northern Trust Corp | 0.00% | 493,676 | $37,810,644 | $53,998,281 | +$16,187,637 | +42.81% | |
| Susquehanna International Group, Llp | 0.03% | 384,035 | $29,413,241 | $42,005,748 | +$12,592,507 | +42.81% | |
| Bridgeway Capital Management, Llc | 0.49% | 366,872 | $28,098,726 | $40,128,459 | +$12,029,733 | +42.81% | |
| Frontier Capital Management Co Llc | 0.24% | 336,180 | $25,748,026 | $36,771,368 | +$11,023,342 | +42.81% | |
| Goldman Sachs Group Inc | 0.00% | 321,454 | $24,620,171 | $35,160,639 | +$10,540,468 | +42.81% | |
| Ubs Group Ag | 0.00% | 318,434 | $24,388,861 | $34,830,311 | +$10,441,450 | +42.81% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 304,449 | $23,317,749 | $33,300,632 | +$9,982,883 | +42.81% | |
| Aqr Capital Management Llc | 0.01% | 302,901 | $23,199,189 | $33,131,311 | +$9,932,122 | +42.81% | |
| Victory Capital Management Inc | 0.01% | 286,305 | $21,928,100 | $31,316,041 | +$9,387,941 | +42.81% | |
| Vanguard Fiduciary Trust Co | 0.00% | 276,794 | $21,199,652 | $30,275,728 | +$9,076,076 | +42.81% | |
| Bank Of New York Mellon Corp | 0.00% | 275,262 | $21,082,282 | $30,108,158 | +$9,025,876 | +42.81% | |
| Principal Financial Group Inc | 0.01% | 259,153 | $19,848,528 | $28,346,155 | +$8,497,627 | +42.81% | |
| Empowered Funds, Llc | 0.10% | 257,357 | $19,710,973 | $28,149,709 | +$8,438,736 | +42.81% | |
| Baird Financial Group, Inc. | 0.03% | 248,506 | $19,033,124 | $27,181,586 | +$8,148,462 | +42.81% | |
| First Trust Advisors Lp | 0.01% | 218,428 | $16,729,400 | $23,891,655 | +$7,162,255 | +42.81% | |
| Allianz Asset Management Gmbh | 0.01% | 209,350 | $16,034,116 | $22,898,703 | +$6,864,587 | +42.81% | |
| Public Sector Pension Investment Board | 0.04% | 188,717 | $14,453,835 | $20,641,865 | +$6,188,030 | +42.81% | |
| Private Management Group Inc | 0.36% | 178,409 | $13,664,345 | $19,514,376 | +$5,850,031 | +42.81% | |
| Envestnet Asset Management Inc | 0.00% | 174,115 | $13,335,478 | $19,044,699 | +$5,709,221 | +42.81% | |
| Clearbridge Investments, Llc | 0.01% | 163,017 | $12,485,437 | $17,830,799 | +$5,345,362 | +42.81% | |
| Squarepoint Ops Llc | 0.02% | 156,942 | $12,020,188 | $17,166,316 | +$5,146,128 | +42.81% | |
| Bank Of America Corp | 0.00% | 154,503 | $11,833,385 | $16,899,538 | +$5,066,153 | +42.81% | |
| Jpmorgan Chase & Co | 0.00% | 121,382 | $9,592,652 | $13,276,763 | +$3,684,111 | +38.41% | |
| Nuveen, Llc | 0.00% | 123,467 | $9,456,317 | $13,504,820 | +$4,048,503 | +42.81% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | 122,143 | $9,354,932 | $13,360,001 | +$4,005,069 | +42.81% | |
| Federated Hermes, Inc. | 0.01% | 114,230 | $8,748,876 | $12,494,477 | +$3,745,601 | +42.81% | |
| Loomis Sayles & Co L P | 0.01% | 110,138 | $8,435,469 | $12,046,894 | +$3,611,425 | +42.81% | |
| Legal & General Group Plc | 0.00% | 104,455 | $8,000,208 | $11,425,288 | +$3,425,080 | +42.81% | |
| Aristotle Capital Boston, Llc | 0.53% | 103,734 | $7,944,987 | $11,346,425 | +$3,401,438 | +42.81% | |
| Bessemer Group Inc | 0.01% | 102,940 | $7,884,000 | $11,259,577 | +$3,375,577 | +42.82% | |
| Rhumbline Advisers | 0.01% | 99,271 | $7,603,143 | $10,858,262 | +$3,255,119 | +42.81% | |
| Ameriprise Financial Inc | 0.00% | 96,738 | $7,410,655 | $10,581,202 | +$3,170,547 | +42.78% | |
| Lsv Asset Management | 0.01% | 96,400 | $7,383,000 | $10,544,232 | +$3,161,232 | +42.82% | |
| Kestra Advisory Services, Llc | 0.02% | 92,471 | $7,082,361 | $10,114,478 | +$3,032,117 | +42.81% | |
| Tudor Investment Corp Et Al | 0.03% | 91,063 | $6,974,515 | $9,960,471 | +$2,985,956 | +42.81% | |
| Denali Advisors Llc | 0.65% | 84,681 | $6,485,718 | $9,262,408 | +$2,776,690 | +42.81% |
Frequently asked questions about INSW
Who owns the most INSW stock?
The largest holders of INSW are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for INTERNATIONAL SEAWAYS (INSW).
Is INSW widely held by superinvestors?
Many widely followed stocks like INSW appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly INSW is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.