Who owns STNG (STNG)
Which tracked institutional funds hold STNG, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See STNG 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 STNG is one-sided between 2025-Q4 and 2026-Q1: 144 added or opened and 37 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
STNG’s largest tracked holder by dollar value, BlackRock, Inc., 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 gap the other way — the median holder sizes STNG more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in STNG 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 316 tracked filers holding STNG, 199 increased or opened the position and 118 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 STNG 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 35
- VANGUARD PORTFOLIO MANAGEMENT LLC$69M
- FEARNLEY ASSET MANAGEMENT AS$12M
- Connor, Clark & Lunn Investment Management Ltd.$7M
- Aquatic Capital Management LLC$7M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$6M
- Thomist Capital Management, LP$5M
Full exits 15
- VANGUARD GROUP INC$77M
- Merewether Investment Management, LP$16M
- CREDIT AGRICOLE S A$15M
- Pacer Advisors, Inc.$13M
- TWO SIGMA ADVISERS, LP$7M
- Tejara Capital Ltd$6M
Largest adds
- BlackRock, Inc.$89M
- TWO SIGMA INVESTMENTS, LP$85M
- DIMENSIONAL FUND ADVISORS LP$81M
- T. Rowe Price Investment Management, Inc.$71M
- LSV ASSET MANAGEMENT$39M
- VICTORY CAPITAL MANAGEMENT INC$36M
Largest trims
- AMERICAN CENTURY COMPANIES INC$24M
- COOPER CREEK PARTNERS MANAGEMENT LLC$21M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$19M
- FMR LLC$18M
- JANE STREET GROUP, LLC$8M
- MILLENNIUM MANAGEMENT LLC$8M
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 |
|---|---|---|---|---|
| BlackRock, Inc. added | 3,571,574 | $267M | 10.0% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 3,128,150 | $234M | 8.8% | 2026-Q1 |
| LSV ASSET MANAGEMENT trimmed | 1,702,057 | $127M | 4.8% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 1,389,010 | $104M | 3.9% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 1,321,798 | $99M | 3.7% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 1,292,734 | $97M | 3.6% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,185,215 | $88M | 3.3% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 1,009,751 | $75M | 2.8% | 2026-Q1 |
| Squarepoint Ops LLC added | 963,808 | $72M | 2.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 924,555 | $69M | 2.6% | 2026-Q1 |
| Assenagon Asset Management S.A. added | 918,223 | $69M | 2.6% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 917,698 | $69M | 2.6% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 851,631 | $64M | 2.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 840,306 | $63M | 2.4% | 2026-Q1 |
| STATE STREET CORP added | 736,585 | $55M | 2.1% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 643,968 | $48M | 1.8% | 2026-Q1 |
| MORGAN STANLEY trimmed | 483,779 | $36M | 1.4% | 2026-Q1 |
| Boston Partners added | 445,904 | $33M | 1.3% | 2026-Q1 |
| Summit Street Capital Management, LLC | 418,959 | $31M | 1.2% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 394,099 | $29M | 1.1% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 378,732 | $28M | 1.1% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 356,560 | $27M | 1.0% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 355,650 | $27M | 1.0% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 345,924 | $26M | 1.0% | 2026-Q1 |
| NORTHERN TRUST CORP added | 335,873 | $25M | 0.9% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 327,275 | $24M | 0.9% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 258,418 | $19M | 0.7% | 2026-Q1 |
| Trexquant Investment LP added | 244,610 | $18M | 0.7% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 244,364 | $18M | 0.7% | 2026-Q1 |
| Empowered Funds, LLC added | 240,545 | $18M | 0.7% | 2026-Q1 |
| First Eagle Investment Management, LLC added | 235,068 | $18M | 0.7% | 2026-Q1 |
| TCW GROUP INC added | 232,392 | $17M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 230,825 | $17M | 0.6% | 2026-Q1 |
| UBS Group AG added | 228,906 | $17M | 0.6% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 223,345 | $17M | 0.6% | 2026-Q1 |
| PRIVATE MANAGEMENT GROUP INC trimmed | 208,489 | $16M | 0.6% | 2026-Q1 |
| COOPER CREEK PARTNERS MANAGEMENT LLC trimmed | 204,064 | $15M | 0.6% | 2026-Q1 |
| BARCLAYS PLC added | 203,587 | $15M | 0.6% | 2026-Q1 |
| Encompass Capital Advisors LLC | 200,000 | $15M | 0.6% | 2026-Q1 |
| Point72 Asset Management, L.P. trimmed | 194,565 | $15M | 0.5% | 2026-Q1 |
| TICINO WEALTH trimmed | 180,682 | $14M | 0.5% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 183,578 | $14M | 0.5% | 2026-Q1 |
| DNB Asset Management AS trimmed | 179,819 | $13M | 0.5% | 2026-Q1 |
| HRT FINANCIAL LP added | 176,837 | $13M | 0.5% | 2026-Q1 |
| Hosking Partners LLP trimmed | 173,704 | $13M | 0.5% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 170,069 | $13M | 0.5% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 168,958 | $13M | 0.5% | 2026-Q1 |
| FEARNLEY ASSET MANAGEMENT AS new | 162,005 | $12M | 0.5% | 2026-Q1 |
| CastleKnight Management LP added | 142,200 | $11M | 0.4% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 135,553 | $10M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp added | 132,975 | $10M | 0.4% | 2026-Q1 |
| CITIGROUP INC added | 125,711 | $9M | 0.4% | 2026-Q1 |
| IEQ CAPITAL, LLC added | 122,146 | $9M | 0.3% | 2026-Q1 |
| SEI INVESTMENTS CO added | 118,751 | $9M | 0.3% | 2026-Q1 |
| FMR LLC trimmed | 113,391 | $8M | 0.3% | 2026-Q1 |
| Invesco Ltd. added | 105,349 | $8M | 0.3% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 104,518 | $8M | 0.3% | 2026-Q1 |
| Nuveen, LLC added | 103,600 | $8M | 0.3% | 2026-Q1 |
| MIRABELLA FINANCIAL SERVICES LLP added | 101,530 | $8M | 0.3% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 100,906 | $8M | 0.3% | 2026-Q1 |
| Engineers Gate Manager LP added | 93,094 | $7M | 0.3% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. added | 92,781 | $7M | 0.3% | 2026-Q1 |
| Aquatic Capital Management LLC added | 90,735 | $7M | 0.3% | 2026-Q1 |
| Jefferies Financial Group Inc. added | 88,000 | $7M | 0.2% | 2026-Q1 |
| Bridgewater Associates, LP trimmed | 87,473 | $7M | 0.2% | 2026-Q1 |
| CAPITAL FUND MANAGEMENT S.A. added | 85,885 | $6M | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 78,483 | $6M | 0.2% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 77,686 | $6M | 0.2% | 2026-Q1 |
| Moody Aldrich Partners LLC trimmed | 76,037 | $6M | 0.2% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 75,524 | $6M | 0.2% | 2026-Q1 |
| Corigliano Investment Advisers, LLC added | 70,000 | $5M | 0.2% | 2026-Q1 |
| Creative Planning added | 69,398 | $5M | 0.2% | 2026-Q1 |
| Thomist Capital Management, LP added | 61,855 | $5M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 61,467 | $5M | 0.2% | 2026-Q1 |
| MARTINGALE ASSET MANAGEMENT L P added | 58,705 | $4M | 0.2% | 2026-Q1 |
| Tidal Investments LLC added | 54,168 | $4M | 0.2% | 2026-Q1 |
| NORGES BANK trimmed | 104,803 | $4M | 0.1% | 2026-Q1 |
| Man Group plc trimmed | 51,829 | $4M | 0.1% | 2026-Q1 |
| Inspire Advisors, LLC trimmed | 50,180 | $4M | 0.1% | 2026-Q1 |
| NOMURA HOLDINGS INC added | 47,934 | $4M | 0.1% | 2026-Q1 |
| CWM, LLC added | 46,615 | $3M | 0.1% | 2026-Q1 |
| PDT Partners, LLC | 45,181 | $3M | 0.1% | 2026-Q1 |
| DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD. new | 43,100 | $3M | 0.1% | 2026-Q1 |
| INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC trimmed | 43,389 | $3M | 0.1% | 2026-Q1 |
| GROUP ONE TRADING LLC trimmed | 42,069 | $3M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 1,509,985 | $77M | 2.9% | 2025-Q4 stale |
| TORONTO DOMINION BANK added | 500,198 | $28M | 1.1% | 2025-Q3 stale |
| Merewether Investment Management, LP trimmed | 323,861 | $16M | 0.6% | 2025-Q4 stale |
| CREDIT AGRICOLE S A | 298,010 | $15M | 0.6% | 2025-Q4 stale |
| Pacer Advisors, Inc. trimmed | 251,231 | $13M | 0.5% | 2025-Q4 stale |
| DONALD SMITH & CO., INC. new | 277,149 | $11M | 0.4% | 2025-Q2 stale |
| M&G PLC added | 258,005 | $10M | 0.4% | 2025-Q1 stale |
| TWO SIGMA ADVISERS, LP added | 141,992 | $7M | 0.3% | 2025-Q4 stale |
| LM Asset (IM) Inc. added | 170,000 | $7M | 0.2% | 2025-Q2 stale |
| Tejara Capital Ltd added | 110,738 | $6M | 0.2% | 2025-Q4 stale |
| Y-Intercept (Hong Kong) Ltd added | 103,313 | $5M | 0.2% | 2025-Q4 stale |
| Ruffer LLP added | 85,914 | $4M | 0.2% | 2025-Q4 stale |
| ROYCE & ASSOCIATES LP trimmed | 80,108 | $4M | 0.2% | 2025-Q4 stale |
| Sagil Capital LLP added | 100,000 | $4M | 0.1% | 2025-Q1 stale |
| Vestcor Inc | 86,992 | $3M | 0.1% | 2025-Q2 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.