International Seaways INSW Institutional Ownership

Updated Oct 11, 2026

International Seaways, Inc. (NYSE:INSW) was reported as a holding by 364 institutional investors in 13F filings for the quarter ended June 30, 2026.

• These investors held 81.74% of outstanding shares in Q2 2026, up from 77.76% the quarter before.
• Total holdings of INSW shares rose 5.16% from Q1 2026, and the holder count rose 46.18% from Q2 2025.
• Looking at the 364 holders of INSW individually, 228 added to their positions, 86 reduced their stakes and 50 left their positions unchanged.
• Altogether, institutional holders owned 40.48Mn INSW shares at the end of Q2 2026, up 1.98Mn from the prior quarter and up 4.67Mn from a year earlier.
• BlackRock, Inc. held the largest position in INSW at 6.6Mn shares as of June 30, 2026, or 13.32% of shares outstanding.
• Holders that added the most shares of International Seaways in Q2 2026 were BlackRock, Inc. (+328.88K shares), CastleKnight Management LP (+294.11K shares), Susquehanna International Group, LLP (+283.18K shares), Nomura Asset Management International Inc. (+201.44K shares) and Vanguard Portfolio Management LLC (+196.52K shares).
• The biggest cuts to INSW positions during Q2 2026 came from Arrowstreet Capital, Limited Partnership (-303.82K shares), Citadel Advisors LLC (-181.23K shares), Tudor Investment Corp (-78.78K shares), Millennium Management LLC (-78.53K shares) and Hosking Partners LLP (-78.28K shares).
• According to Business Quant data, the leading holders of INSW for Q2 2026 were BlackRock, Inc. (6.6Mn shares), FMR LLC (4.95Mn shares), Dimensional Fund Advisors LP (3.07Mn shares), Vanguard Portfolio Management LLC (2.28Mn shares), American Century Companies Inc (2.15Mn shares), Vanguard Capital Management LLC (2.09Mn shares), Nomura Asset Management International Inc. (1.8Mn shares), State Street Corp (1.68Mn shares), Geode Capital Management, LLC (1.24Mn shares) and Morgan Stanley (789.81K shares).