% of shares outstanding not shown: this line files 20-F annual reports only — a foreign private issuer whose US listing trades as ADSs (depositary receipts), while its cover-page share count is in ORDINARY shares. The depositary ratio is not in our data. The count we hold for this line is 51,762,790 shares (as of 2025-12-31, source dei). Dividing one by the other is wrong by the whole ratio (a 5:1 ADR reads one fifth of the true percentage), so the percentage is withheld rather than served wrong. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for STNG in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 3,571,5743.6M | $267M | — | ADD 2% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 3,128,1503.1M | $234M | — | ADD 4% |
| 3 | LSV ASSET MANAGEMENT | 1,702,0571.7M | $127M | — | — |
| 4 | TWO SIGMA INVESTMENTS, LP | 1,389,0101.4M | $104M | — | ADD 276% |
| 5 | VICTORY CAPITAL MANAGEMENT INC | 1,321,7981.3M | $99M | — | ADD 7% |
| 6 | T. Rowe Price Investment Management, Inc. | 1,292,7341.3M | $97M | — | TRIM -29% |
| 7 | RENAISSANCE TECHNOLOGIES LLC | 1,185,2151.2M | $88M | — | TRIM -3% |
| 8 | AMERICAN CENTURY COMPANIES INC | 1,009,7511.0M | $75M | — | TRIM -48% |
| 9 | Squarepoint Ops LLC | 963,808963,808 | $72M | — | ADD 5% |
| 10 | GOLDMAN SACHS GROUP INC | 924,555924,555 | $69M | — | TRIM -10% |
| 11 | Assenagon Asset Management S.A. | 918,223918,223 | $69M | — | ADD 8% |
| 12 | VANGUARD PORTFOLIO MANAGEMENT LLC | 917,698917,698 | $69M | — | NEW |
| 13 | AQR CAPITAL MANAGEMENT LLC | 859,164859,164 | $64M | — | ADD 24% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 840,306840,306 | $63M | — | ADD 3% |
| 15 | STATE STREET CORP | 736,585736,585 | $55M | — | — |
| 16 | Qube Research & Technologies Ltd | 643,968643,968 | $48M | — | ADD 29% |
| 17 | MORGAN STANLEY | 483,779483,779 | $36M | — | TRIM -18% |
| 18 | Boston Partners | 445,904445,904 | $33M | — | ADD 491% |
| 19 | Summit Street Capital Management, LLC | 418,959418,959 | $31M | — | — |
| 20 | JPMORGAN CHASE & CO | 394,099394,099 | $29M | — | ADD 38% |
| 21 | TUDOR INVESTMENT CORP ET AL | 378,732378,732 | $28M | — | ADD 32% |
| 22 | JANE STREET GROUP, LLC | 356,560356,560 | $27M | — | TRIM -48% |
| 23 | AMERIPRISE FINANCIAL INC | 355,650355,650 | $27M | — | TRIM -10% |
| 24 | Balyasny Asset Management L.P. | 345,924345,924 | $26M | — | ADD 38% |
| 25 | NORTHERN TRUST CORP | 335,873335,873 | $25M | — | ADD 4% |
| 26 | MILLENNIUM MANAGEMENT LLC | 327,275327,275 | $24M | — | TRIM -49% |
| 27 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 258,418258,418 | $19M | — | ADD 6% |
| 28 | Trexquant Investment LP | 244,610244,610 | $18M | — | ADD 101% |
| 29 | BANK OF AMERICA CORP /DE/ | 244,364244,364 | $18M | — | ADD 9% |
| 30 | Empowered Funds, LLC | 240,545240,545 | $18M | — | ADD 21% |
| 31 | First Eagle Investment Management, LLC | 235,068235,068 | $18M | — | ADD 10% |
| 32 | TCW GROUP INC | 232,392232,392 | $17M | — | ADD 6% |
| 33 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 230,825230,825 | $17M | — | ADD 57% |
| 34 | UBS Group AG | 228,906228,906 | $17M | — | ADD 43% |
| 35 | ACADIAN ASSET MANAGEMENT LLC | 223,345223,345 | $17M | — | ADD 1037% |
| 36 | PRIVATE MANAGEMENT GROUP INC | 208,489208,489 | $16M | — | TRIM -17% |
| 37 | COOPER CREEK PARTNERS MANAGEMENT LLC | 204,064204,064 | $15M | — | TRIM -71% |
| 38 | BARCLAYS PLC | 203,587203,587 | $15M | — | ADD 32% |
| 39 | Encompass Capital Advisors LLC | 200,000200,000 | $15M | — | — |
| 40 | Point72 Asset Management, L.P. | 194,565194,565 | $15M | — | TRIM -28% |
| 41 | TICINO WEALTH | 180,682180,682 | $14M | — | TRIM -4% |
| 42 | ExodusPoint Capital Management, LP | 183,578183,578 | $14M | — | ADD 108% |
| 43 | DNB Asset Management AS | 179,819179,819 | $13M | — | TRIM -28% |
| 44 | HRT FINANCIAL LP | 176,837176,837 | $13M | — | ADD 164% |
| 45 | Hosking Partners LLP | 173,704173,704 | $13M | — | TRIM -8% |
| 46 | FMR LLC | 171,365171,365 | $13M | — | TRIM -68% |
| 47 | CITADEL ADVISORS LLC | 170,069170,069 | $13M | — | TRIM -16% |
| 48 | Russell Investments Group, Ltd. | 168,958168,958 | $13M | — | ADD 64% |
| 49 | FEARNLEY ASSET MANAGEMENT AS | 162,005162,005 | $12M | — | NEW |
| 50 | CastleKnight Management LP | 142,200142,200 | $11M | — | ADD 343% |
| 51 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 135,553135,553 | $10M | — | TRIM -76% |
| 52 | Bank of New York Mellon Corp | 132,975132,975 | $10M | — | ADD 10% |
| 53 | Invesco Ltd. | 128,293128,293 | $10M | — | ADD 55% |
| 54 | CITIGROUP INC | 125,711125,711 | $9M | — | ADD 148% |
| 55 | IEQ CAPITAL, LLC | 122,146122,146 | $9M | — | ADD 15% |
| 56 | SEI INVESTMENTS CO | 118,751118,751 | $9M | — | ADD 47% |
| 57 | PRINCIPAL FINANCIAL GROUP INC | 104,518104,518 | $8M | — | TRIM -10% |
| 58 | Nuveen, LLC | 103,600103,600 | $8M | — | — |
| 59 | MIRABELLA FINANCIAL SERVICES LLP | 101,530101,530 | $8M | — | ADD 1837% |
| 60 | BNP PARIBAS FINANCIAL MARKETS | 100,906100,906 | $8M | — | ADD 322% |
| 61 | Engineers Gate Manager LP | 93,09493,094 | $7M | — | ADD 77% |
| 62 | Connor, Clark & Lunn Investment Management Ltd. | 92,78192,781 | $7M | — | NEW |
| 63 | Aquatic Capital Management LLC | 90,73590,735 | $7M | — | NEW |
| 64 | Jefferies Financial Group Inc. | 88,00088,000 | $7M | — | ADD 51% |
| 65 | Bridgewater Associates, LP | 87,47387,473 | $7M | — | TRIM -55% |
| 66 | CAPITAL FUND MANAGEMENT S.A. | 85,88585,885 | $6M | — | ADD 157% |
| 67 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 78,48378,483 | $6M | — | NEW |
| 68 | MARSHALL WACE, LLP | 77,68677,686 | $6M | — | TRIM -58% |
| 69 | Moody Aldrich Partners LLC | 76,03776,037 | $6M | — | TRIM -32% |
| 70 | FRANKLIN RESOURCES INC | 75,52475,524 | $6M | — | TRIM -9% |
| 71 | Corigliano Investment Advisers, LLC | 70,00070,000 | $5M | — | ADD 5% |
| 72 | Creative Planning | 69,39869,398 | $5M | — | ADD 22% |
| 73 | Thomist Capital Management, LP | 61,85561,855 | $5M | — | NEW |
| 74 | RHUMBLINE ADVISERS | 61,46761,467 | $5M | — | TRIM -14% |
| 75 | MARTINGALE ASSET MANAGEMENT L P | 58,70558,705 | $4M | — | ADD 60% |
| 76 | Tidal Investments LLC | 54,16854,168 | $4M | — | ADD 74% |
| 77 | Man Group plc | 51,82951,829 | $4M | — | NEW |
| 78 | Inspire Advisors, LLC | 50,18050,180 | $4M | — | TRIM -7% |
| 79 | NOMURA HOLDINGS INC | 47,93447,934 | $4M | — | NEW |
| 80 | CWM, LLC | 46,61546,615 | $3M | — | ADD 26% |
| 81 | PDT Partners, LLC | 45,18145,181 | $3M | — | — |
| 82 | DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD. | 43,10043,100 | $3M | — | NEW |
| 83 | INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC | 43,38943,389 | $3M | — | TRIM -12% |
| 84 | GROUP ONE TRADING LLC | 42,06942,069 | $3M | — | NEW |
| 85 | DEUTSCHE BANK AG\ | 37,70337,703 | $3M | — | ADD 12% |
| 86 | WELLS FARGO & COMPANY/MN | 36,44736,447 | $3M | — | TRIM -40% |
| 87 | ALLIANCEBERNSTEIN L.P. | 52,59752,597 | $3M | — | TRIM -44% |
| 88 | VOLORIDGE INVESTMENT MANAGEMENT, LLC | 35,45535,455 | $3M | — | TRIM -63% |
| 89 | VANGUARD CAPITAL MANAGEMENT LLC | 33,89433,894 | $3M | — | NEW |
| 90 | Integrated Advisors Network LLC | 33,84533,845 | $3M | — | NEW |
| 91 | ALGERT GLOBAL LLC | 33,35033,350 | $2M | — | NEW |
| 92 | Game Creek Capital, LP | 33,25033,250 | $2M | — | — |
| 93 | GSA CAPITAL PARTNERS LLP | 32,91932,919 | $2M | — | TRIM -48% |
| 94 | PRICE T ROWE ASSOCIATES INC /MD/ | 32,61132,611 | $2M | — | ADD 26% |
| 95 | Walleye Capital LLC | 31,11731,117 | $2M | — | ADD 8449% |
| 96 | WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 32,95832,958 | $2M | — | ADD 29% |
| 97 | Glenorchy Capital Ltd | 30,25430,254 | $2M | — | ADD 4% |
| 98 | Caption Management, LLC | 30,00030,000 | $2M | — | ADD 59% |
| 99 | Oceanic Investment Management LTD | 29,86429,864 | $2M | — | TRIM -54% |
| 100 | HSBC HOLDINGS PLC | 29,74029,740 | $2M | — | — |
Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 2.8M | 3.1M | 3.1M | 3.2M | 3.5M | 3.6M | $267M |
| DIMENSIONAL FUND ADVISORS LP | 3.5M | 3.0M | 2.9M | 2.9M | 3.0M | 3.1M | $234M |
| LSV ASSET MANAGEMENT | 1.9M | 1.8M | 1.8M | 1.8M | 1.7M | 1.7M | $127M |
| TWO SIGMA INVESTMENTS, LP | — | — | — | — | 370K | 1.4M | $104M |
| VICTORY CAPITAL MANAGEMENT INC | 143K | 254K | 1.2M | 1.2M | 1.2M | 1.3M | $99M |
| T. Rowe Price Investment Management, Inc. | — | — | — | 1.5M | 1.8M | 1.3M | $97M |
| RENAISSANCE TECHNOLOGIES LLC | 1.1M | 967K | 1.2M | 1.1M | 1.2M | 1.2M | $88M |
| AMERICAN CENTURY COMPANIES INC | 1.6M | 1.6M | 1.8M | 1.9M | 1.9M | 1.0M | $75M |
| Squarepoint Ops LLC | 594K | 115K | 37K | 18K | 921K | 964K | $72M |
| GOLDMAN SACHS GROUP INC | 1.3M | 982K | 1.0M | 1.5M | 1.0M | 925K | $69M |
| Assenagon Asset Management S.A. | 202K | 51K | 357K | 361K | 854K | 918K | $69M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | — | — | — | — | — | 918K | $69M |
| AQR CAPITAL MANAGEMENT LLC | 216K | 335K | 643K | 699K | 691K | 859K | $64M |
| GEODE CAPITAL MANAGEMENT, LLC | 762K | 795K | 799K | 815K | 814K | 840K | $63M |
| STATE STREET CORP | 762K | 740K | 752K | 744K | 733K | 737K | $55M |
Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.
Short interest has its own tab now — open SI →
Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| TWO SIGMA INVESTMENTS, LP | +1,019,152 | $76M | ADD |
| VANGUARD PORTFOLIO MANAGEMENT LLC | +917,698 | $69M | OPEN |
| Boston Partners | +370,469 | $28M | ADD |
| ACADIAN ASSET MANAGEMENT LLC | +203,702 | $15M | ADD |
| AQR CAPITAL MANAGEMENT LLC | +168,626 | $13M | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD GROUP INC | −1,558,491 | $116M | CLOSE |
| AMERICAN CENTURY COMPANIES INC | −938,385 | $70M | TRIM |
| T. Rowe Price Investment Management, Inc. | −525,315 | $39M | TRIM |
| COOPER CREEK PARTNERS MANAGEMENT LLC | −502,669 | $38M | TRIM |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | −434,488 | $32M | TRIM |
The 2025-Q4 register is as-filed in ITS OWN share basis; every count below was rebased into the 2026-Q1 basis (no split in between, factor 1). Dollar figures value the SHARE delta at one price — the 2026-03-31 close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure.
13Fs disclose LONG US-listed positions only — shorts, most derivatives, bonds and non-US listings are invisible here, and a filer's quarter-over-quarter change is not necessarily a trade (index rebalances, in-kind transfers and entity successions all read as flow).
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 315 | 34,791,749 | — | $2.6B |
| 2025-Q4 | 271 | 36,383,298 | — | $1.8B |
| 2025-Q3 | 266 | 36,752,441 | — | $2.1B |
| 2025-Q2 | 237 | 34,473,357 | — | $1.3B |
| 2025-Q1 | 233 | 36,207,640 | — | $1.4B |
| 2024-Q4 | 256 | 36,323,762 | — | $1.8B |
| 2024-Q3 | 292 | 37,335,133 | — | $2.5B |
| 2024-Q2 | 309 | 36,155,972 | — | $2.9B |
| 2024-Q1 | 291 | 37,159,272 | — | $2.6B |
| 2023-Q4 | 267 | 31,199,790 | — | $1.9B |
| 2023-Q3 | 233 | 30,024,426 | — | $1.6B |
| 2023-Q2 | 230 | 32,932,522 | — | $1.6B |
| 2023-Q1 | 232 | 38,028,718 | — | $2.1B |
| 2022-Q4 | 239 | 38,396,694 | — | $1.9B |
| 2022-Q3 | 202 | 32,307,419 | — | $1.4B |
| 2022-Q2 | 168 | 29,605,196 | — | $1.0B |
| 2022-Q1 | 138 | 26,390,540 | — | $564M |
| 2021-Q4 | 135 | 25,807,063 | — | $331M |
| 2021-Q3 | 146 | 25,908,283 | — | $480M |
| 2021-Q2 | 154 | 26,883,453 | — | $593M |
| 2021-Q1 | 151 | 24,838,467 | — | $458M |
| 2020-Q4 | 151 | 23,378,673 | — | $264M |
| 2020-Q3 | 148 | 23,392,907 | — | $257M |
| 2020-Q2 | 169 | 28,059,536 | — | $359M |
| 2020-Q1 | 171 | 29,427,456 | — | $559M |
| 2019-Q4 | 183 | 32,557,761 | — | $1.3B |
| 2019-Q3 | 146 | 29,162,006 | — | $859M |
| 2019-Q2 | 134 | 29,842,495 | — | $881M |
| 2019-Q1 | 107 | 29,654,457 | — | $582M |
| 2018-Q4 | 112 | 273,156,485 | — | $480M |
| 2018-Q3 | 123 | 201,756,591 | — | $405M |
| 2018-Q2 | 129 | 204,490,987 | — | $574M |
| 2018-Q1 | 132 | 192,231,885 | — | $378M |
| 2017-Q4 | 145 | 211,508,800 | — | $645M |
| 2017-Q3 | 152 | 183,730,845 | — | $625M |
| 2017-Q2 | 152 | 147,104,347 | — | $583M |
| 2017-Q1 | 151 | 132,863,171 | — | $596M |
| 2016-Q4 | 153 | 129,120,079 | — | $590M |
| 2016-Q3 | 163 | 137,878,155 | — | $643M |
| 2016-Q2 | 154 | 142,308,701 | — | $601M |
| 2016-Q1 | 164 | 145,509,590 | — | $849M |
| 2015-Q4 | 187 | 151,532,224 | — | $1.2B |
| 2015-Q3 | 176 | 155,399,186 | — | $1.4B |
| 2015-Q2 | 164 | 164,350,827 | — | $1.7B |
| 2015-Q1 | 147 | 159,582,404 | — | $1.5B |
| 2014-Q4 | 135 | 157,331,595 | — | $1.4B |
| 2014-Q3 | 122 | 152,076,847 | — | $1.3B |
| 2014-Q2 | 141 | 163,394,621 | — | $1.7B |
| 2014-Q1 | 144 | 173,438,944 | — | $1.7B |
| 2013-Q4 | 143 | 165,402,804 | — | $2.0B |
| 2013-Q3 | 135 | 157,774,293 | — | $1.5B |
| 2013-Q2 | 121 | 134,814,196 | — | $1.2B |
| 2013-Q1 | 4 | 414,601 | — | $4M |
| 2025-12-31 |
| SEC → |
Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).
