Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in INSW held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 6.3M | $456.7M | +2.1% | 12.659% | 0.01% |
| 2 | FMR LLC | 4.9M | $359.9M | +5.7% | 9.974% | 0.02% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 3.0M | $220.4M | +1.8% | 6.110% | 0.05% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.1M | $151.9M | — | 4.212% | 0.01% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.1M | $151.6M | — | 4.202% | 0.00% |
| 6 | AMERICAN CENTURY COMPANIES INC | 2.0M | $145.5M | +2.7% | 4.034% | 0.07% |
| 7 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.6M | $116.8M | -9.4% | 3.236% | 0.20% |
| 8 | STATE STREET CORP | 1.6M | $113.7M | +2.1% | 3.151% | 0.00% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1.1M | $82.9M | +12.4% | 2.296% | 0.01% |
| 10 | Hosking Partners LLP | 687K | $50.1M | -0.0% | 1.387% | 1.79% |
| 11 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 651K | $47.5M | +2.0% | 1.316% | 0.01% |
| 12 | Invesco Ltd. | 648K | $47.2M | +89.5% | 1.309% | 0.01% |
| 13 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 608K | $44.3M | +167.6% | 1.229% | 0.02% |
| 14 | MORGAN STANLEY | 594K | $43.3M | -13.6% | 1.199% | 0.00% |
| 15 | NORTHERN TRUST CORP | 415K | $30.2M | +2.5% | 0.838% | 0.00% |
| 16 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 415K | $30.2M | -0.0% | 0.837% | 0.61% |
| 17 | CITADEL ADVISORS LLC | 386K | $28.1M | +88.2% | 0.780% | 0.01% |
| 18 | FRONTIER CAPITAL MANAGEMENT CO LLC | 345K | $25.1M | +25.1% | 0.696% | 0.26% |
| 19 | CastleKnight Management LP | 287K | $20.9M | +397.5% | 0.579% | 1.80% |
| 20 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 283K | $20.6M | +438.1% | 0.572% | 0.00% |
| 21 | GOLDMAN SACHS GROUP INC | 269K | $19.6M | -26.1% | 0.543% | 0.00% |
| 22 | VANGUARD FIDUCIARY TRUST CO | 268K | $19.6M | — | 0.542% | 0.00% |
| 23 | Empowered Funds, LLC | 268K | $19.5M | +13.9% | 0.542% | 0.12% |
| 24 | Bank of New York Mellon Corp | 268K | $19.5M | -2.9% | 0.541% | 0.00% |
| 25 | AQR CAPITAL MANAGEMENT LLC | 263K | $19.2M | -7.1% | 0.532% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in INSW — a direct measure of their conviction.
Filings activity in INSW during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 325 | +16% | 68.37% | +24.48 pp | $2.78B | +56% |
| Q4 2025 | 279 | +7.7% | 43.89% | +2.28 pp | $1.78B | +5.5% |
| Q3 2025 | 259 | +4.4% | 41.61% | 28.03 pp | $1.69B | 40% |
| Q2 2025 | 248 | +1.6% | 69.64% | +41.11 pp | $2.83B | +144% |
| Q1 2025 | 244 | 1.2% | 28.53% | 15.83 pp | $1.16B | 36% |
| Q4 2024 | 247 | 1.2% | 44.36% | +6.10 pp | $1.80B | +16% |
| Q3 2024 | 250 | 11% | 38.26% | 8.01 pp | $1.55B | 17% |
| Q2 2024 | 280 | — | 46.27% | — | $1.88B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying INSW stock.
Based on Q1 2026 13F filings, institutional ownership of International Seaways, Inc. stands at 68.4%, held across 325 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of INSW, with approximately 6,266,672 shares worth $0.46B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of INSW, including CITADEL ADVISORS LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for INSW is 75 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
81 institutions opened new positions in INSW during Q1 2026, while 35 fully exited. 209 added to existing positions and 34 trimmed.
INSW institutional ownership rose by 24.48 percentage points quarter-over-quarter, with a net change of +46 holders.
The top 10 institutions account for 66.6% of all reported 13F value in INSW, and the top 25 account for 82.3%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
International Seaways, Inc. (INSW) Institutional Ownership