Who owns INSW (INSW)
Which tracked institutional funds hold INSW, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See INSW company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on INSW is one-sided between 2025-Q4 and 2026-Q1: 142 added or opened and 29 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
INSW’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in INSW divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 332 tracked filers holding INSW, 186 increased or opened the position and 127 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in INSW between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 34
- VANGUARD PORTFOLIO MANAGEMENT LLC$152M
- VANGUARD CAPITAL MANAGEMENT LLC$152M
- VANGUARD FIDUCIARY TRUST CO$20M
- ACORN FINANCIAL ADVISORY SERVICES INC /ADV$13M
- Connor, Clark & Lunn Investment Management Ltd.$7M
- Qube Research & Technologies Ltd$6M
Full exits 12
- VANGUARD GROUP INC$193M
- FEARNLEY ASSET MANAGEMENT AS$6M
- Brandywine Global Investment Management, LLC$6M
- HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC$4M
- Weiss Asset Management LP$2M
- Verition Fund Management LLC$2M
Largest adds
- FMR LLC$133M
- DIMENSIONAL FUND ADVISORS LP$76M
- AMERICAN CENTURY COMPANIES INC$51M
- STATE STREET CORP$39M
- GEODE CAPITAL MANAGEMENT, LLC$34M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$33M
Largest trims
- Amundi$12M
- Marnell Management LLC$4M
- LOOMIS SAYLES & CO L P$3M
- EXCHANGE TRADED CONCEPTS, LLC$3M
- BARCLAYS PLC$2M
- Vident Advisory, LLC$2M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 4,936,019 | $360M | 12.2% | 2026-Q1 |
| BlackRock, Inc. trimmed | 4,259,005 | $310M | 10.5% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 3,024,755 | $220M | 7.5% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 2,084,900 | $152M | 5.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,080,181 | $152M | 5.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,996,893 | $146M | 4.9% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 1,602,070 | $117M | 4.0% | 2026-Q1 |
| STATE STREET CORP added | 1,559,828 | $114M | 3.9% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,136,638 | $83M | 2.8% | 2026-Q1 |
| Hosking Partners LLP trimmed | 686,852 | $50M | 1.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 651,449 | $47M | 1.6% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 608,265 | $44M | 1.5% | 2026-Q1 |
| MORGAN STANLEY trimmed | 593,515 | $43M | 1.5% | 2026-Q1 |
| Invesco Ltd. added | 583,065 | $42M | 1.4% | 2026-Q1 |
| NORTHERN TRUST CORP added | 414,579 | $30M | 1.0% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 414,555 | $30M | 1.0% | 2026-Q1 |
| FRONTIER CAPITAL MANAGEMENT CO LLC added | 344,697 | $25M | 0.9% | 2026-Q1 |
| CastleKnight Management LP added | 286,801 | $21M | 0.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 268,733 | $20M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 268,274 | $20M | 0.7% | 2026-Q1 |
| Empowered Funds, LLC added | 268,163 | $20M | 0.7% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 267,814 | $20M | 0.7% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 260,238 | $19M | 0.6% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 260,105 | $19M | 0.6% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 254,071 | $19M | 0.6% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 252,670 | $18M | 0.6% | 2026-Q1 |
| Baird Financial Group, Inc. added | 236,671 | $17M | 0.6% | 2026-Q1 |
| PRIVATE MANAGEMENT GROUP INC trimmed | 225,303 | $16M | 0.6% | 2026-Q1 |
| Allianz Asset Management GmbH added | 199,687 | $15M | 0.5% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 186,318 | $14M | 0.5% | 2026-Q1 |
| Public Sector Pension Investment Board added | 186,087 | $14M | 0.5% | 2026-Q1 |
| ACORN FINANCIAL ADVISORY SERVICES INC /ADV new | 180,365 | $13M | 0.4% | 2026-Q1 |
| Clearbridge Investments, LLC trimmed | 180,195 | $13M | 0.4% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 175,630 | $13M | 0.4% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 169,844 | $12M | 0.4% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 169,104 | $12M | 0.4% | 2026-Q1 |
| UBS Group AG trimmed | 163,461 | $12M | 0.4% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 160,912 | $12M | 0.4% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 157,195 | $11M | 0.4% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 158,004 | $11M | 0.4% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 111,740 | $8M | 0.3% | 2026-Q1 |
| LOOMIS SAYLES & CO L P trimmed | 111,612 | $8M | 0.3% | 2026-Q1 |
| Aristotle Capital Boston, LLC trimmed | 108,956 | $8M | 0.3% | 2026-Q1 |
| Legal & General Group Plc trimmed | 106,720 | $8M | 0.3% | 2026-Q1 |
| BESSEMER GROUP INC added | 102,940 | $8M | 0.3% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 100,858 | $7M | 0.2% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. added | 98,732 | $7M | 0.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 96,735 | $7M | 0.2% | 2026-Q1 |
| Nuveen, LLC trimmed | 89,049 | $6M | 0.2% | 2026-Q1 |
| Swiss National Bank | 82,800 | $6M | 0.2% | 2026-Q1 |
| Energy Income Partners, LLC added | 82,321 | $6M | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 79,949 | $6M | 0.2% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 78,950 | $6M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 78,159 | $6M | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 77,000 | $6M | 0.2% | 2026-Q1 |
| Cercano Management LLC trimmed | 73,147 | $5M | 0.2% | 2026-Q1 |
| GABELLI FUNDS LLC trimmed | 71,730 | $5M | 0.2% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 70,222 | $5M | 0.2% | 2026-Q1 |
| LPL Financial LLC added | 68,643 | $5M | 0.2% | 2026-Q1 |
| Kingsview Wealth Management, LLC added | 67,236 | $5M | 0.2% | 2026-Q1 |
| Informed Momentum Co LLC added | 66,410 | $5M | 0.2% | 2026-Q1 |
| SummitTX Capital, L.P. new | 65,059 | $5M | 0.2% | 2026-Q1 |
| Creative Planning added | 64,958 | $5M | 0.2% | 2026-Q1 |
| Lesa Sroufe & Co added | 59,688 | $4M | 0.1% | 2026-Q1 |
| IEQ CAPITAL, LLC added | 56,768 | $4M | 0.1% | 2026-Q1 |
| CSM Advisors, LLC added | 56,603 | $4M | 0.1% | 2026-Q1 |
| Glenorchy Capital Ltd added | 53,180 | $4M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 49,848 | $4M | 0.1% | 2026-Q1 |
| MARTINGALE ASSET MANAGEMENT L P added | 49,738 | $4M | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 47,324 | $3M | 0.1% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 41,299 | $3M | 0.1% | 2026-Q1 |
| Vident Advisory, LLC trimmed | 41,203 | $3M | 0.1% | 2026-Q1 |
| Knights of Columbus Asset Advisors LLC trimmed | 38,483 | $3M | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 37,958 | $3M | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 35,265 | $3M | 0.1% | 2026-Q1 |
| ExodusPoint Capital Management, LP trimmed | 34,038 | $2M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 50,504 | $2M | 0.1% | 2026-Q1 |
| DENALI ADVISORS LLC added | 32,528 | $2M | 0.1% | 2026-Q1 |
| Tidal Investments LLC added | 32,038 | $2M | 0.1% | 2026-Q1 |
| SPROTT INC. added | 30,182 | $2M | 0.1% | 2026-Q1 |
| HighTower Advisors, LLC trimmed | 30,025 | $2M | 0.1% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 29,449 | $2M | 0.1% | 2026-Q1 |
| Amundi trimmed | 29,314 | $2M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 3,968,907 | $193M | 6.5% | 2025-Q4 stale |
| MACQUARIE GROUP LTD trimmed | 1,892,857 | $87M | 3.0% | 2025-Q3 stale |
| Encompass Capital Advisors LLC added | 874,204 | $40M | 1.4% | 2025-Q3 stale |
| DONALD SMITH & CO., INC. added | 709,036 | $26M | 0.9% | 2025-Q2 stale |
| FULLER & THALER ASSET MANAGEMENT, INC. trimmed | 407,452 | $15M | 0.5% | 2025-Q2 stale |
| Pacer Advisors, Inc. added | 197,380 | $9M | 0.3% | 2025-Q3 stale |
| Condire Management, LP | 194,763 | $9M | 0.3% | 2025-Q3 stale |
| FEARNLEY ASSET MANAGEMENT AS new | 39,200 | $6M | 0.2% | 2025-Q4 stale |
| Brandywine Global Investment Management, LLC trimmed | 120,975 | $6M | 0.2% | 2025-Q4 stale |
| WINMILL & CO. INC | 175,600 | $6M | 0.2% | 2025-Q1 stale |
| KETTLE HILL CAPITAL MANAGEMENT, LLC added | 123,209 | $4M | 0.2% | 2025-Q2 stale |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 75,639 | $4M | 0.1% | 2025-Q4 stale |
| Marex Group plc trimmed | 79,259 | $4M | 0.1% | 2025-Q3 stale |
| Pale Fire Capital SE trimmed | 76,059 | $4M | 0.1% | 2025-Q3 stale |
| Keeley-Teton Advisors, LLC added | 101,303 | $3M | 0.1% | 2025-Q1 stale |
| GeoSphere Capital Management, LLC added | 60,000 | $3M | 0.1% | 2025-Q3 stale |
| GRAHAM CAPITAL WEALTH MANAGEMENT, LLC new | 73,065 | $2M | 0.1% | 2025-Q1 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.