Who owns STN (STN)
Which tracked institutional funds hold STN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See STN 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
68 tracked funds added or opened STN while 91 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
STN’s largest tracked holder by dollar value, VANGUARD GROUP 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 STN more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in STN 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 310 tracked filers holding STN, 158 increased or opened the position and 127 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 STN 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 22
- VANGUARD CAPITAL MANAGEMENT LLC$287M
- VANGUARD FIDUCIARY TRUST CO$87M
- Vanguard Global Advisers, LLC$39M
- Martin Investment Management, LLC$16M
- VANGUARD ASSET MANAGEMENT, Ltd$15M
- QV Investors Inc.$14M
Full exits 7
- VANGUARD GROUP INC$448M
- TWO SIGMA ADVISERS, LP$23M
- Grandeur Peak Global Advisors, LLC$11M
- NAVELLIER & ASSOCIATES INC$4M
- FORSTA AP-FONDEN$2M
- Triasima Portfolio Management inc.$2M
Largest adds
- MILLENNIUM MANAGEMENT LLC$36M
- Pictet Asset Management Holding SA$24M
- TD Waterhouse Canada Inc.$20M
- CANADA PENSION PLAN INVESTMENT BOARD$17M
- ACADIAN ASSET MANAGEMENT LLC$15M
- CITADEL ADVISORS LLC$13M
Largest trims
- MACKENZIE FINANCIAL CORP$128M
- ROYAL BANK OF CANADA$65M
- BCV Asset Management Inc.$44M
- Connor, Clark & Lunn Investment Management Ltd.$42M
- 1832 Asset Management L.P.$36M
- Clearbridge Investments, LLC$29M
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 |
|---|---|---|---|---|
| BANK OF MONTREAL /CAN/ added | 4,743,566 | $410M | 5.9% | 2026-Q1 |
| 1832 Asset Management L.P. trimmed | 3,927,603 | $339M | 4.9% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 3,463,970 | $327M | 4.7% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 3,760,103 | $325M | 4.7% | 2026-Q1 |
| Pictet Asset Management Holding SA added | 3,485,388 | $300M | 4.3% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 3,315,321 | $287M | 4.1% | 2026-Q1 |
| MACKENZIE FINANCIAL CORP trimmed | 3,105,136 | $268M | 3.8% | 2026-Q1 |
| Fiera Capital Corp added | 2,016,034 | $174M | 2.5% | 2026-Q1 |
| FMR LLC trimmed | 1,902,633 | $164M | 2.4% | 2026-Q1 |
| MORGAN STANLEY added | 1,522,921 | $132M | 1.9% | 2026-Q1 |
| Man Group plc trimmed | 1,520,891 | $131M | 1.9% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 1,394,724 | $120M | 1.7% | 2026-Q1 |
| NORGES BANK added | 1,419,621 | $118M | 1.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 1,276,934 | $110M | 1.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 1,140,686 | $99M | 1.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,119,479 | $98M | 1.4% | 2026-Q1 |
| BCV Asset Management Inc. added | 1,029,411 | $89M | 1.3% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 1,002,876 | $87M | 1.2% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 983,625 | $85M | 1.2% | 2026-Q1 |
| Amundi added | 825,641 | $81M | 1.2% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 903,925 | $77M | 1.1% | 2026-Q1 |
| NATIONAL BANK OF CANADA /FI/ trimmed | 875,748 | $75M | 1.1% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 880,550 | $75M | 1.1% | 2026-Q1 |
| Legal & General Group Plc trimmed | 840,754 | $72M | 1.0% | 2026-Q1 |
| Allianz Asset Management GmbH trimmed | 827,771 | $71M | 1.0% | 2026-Q1 |
| Invesco Ltd. added | 805,865 | $70M | 1.0% | 2026-Q1 |
| TD Asset Management Inc added | 801,207 | $69M | 1.0% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 763,617 | $66M | 0.9% | 2026-Q1 |
| TD Waterhouse Canada Inc. added | 744,408 | $64M | 0.9% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 717,255 | $62M | 0.9% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 696,342 | $60M | 0.9% | 2026-Q1 |
| DekaBank Deutsche Girozentrale | 685,175 | $60M | 0.9% | 2026-Q1 |
| Alberta Investment Management Corp added | 668,628 | $58M | 0.8% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 640,501 | $55M | 0.8% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 628,963 | $54M | 0.8% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 611,640 | $52M | 0.8% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 599,913 | $52M | 0.7% | 2026-Q1 |
| TORONTO DOMINION BANK added | 550,235 | $48M | 0.7% | 2026-Q1 |
| Federation des caisses Desjardins du Quebec added | 546,139 | $46M | 0.7% | 2026-Q1 |
| BlackRock, Inc. added | 515,600 | $45M | 0.6% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 458,993 | $40M | 0.6% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 456,573 | $39M | 0.6% | 2026-Q1 |
| Vontobel Holding Ltd. added | 433,004 | $37M | 0.5% | 2026-Q1 |
| Swiss National Bank added | 383,970 | $33M | 0.5% | 2026-Q1 |
| BARCLAYS PLC added | 365,789 | $32M | 0.5% | 2026-Q1 |
| GUARDIAN CAPITAL LP added | 366,389 | $32M | 0.5% | 2026-Q1 |
| CIBC WORLD MARKET INC. added | 364,027 | $31M | 0.5% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 364,700 | $31M | 0.5% | 2026-Q1 |
| UBS Group AG trimmed | 307,389 | $27M | 0.4% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 307,054 | $27M | 0.4% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 304,600 | $26M | 0.4% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 298,682 | $26M | 0.4% | 2026-Q1 |
| JUPITER ASSET MANAGEMENT LTD | 279,438 | $24M | 0.3% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 277,834 | $24M | 0.3% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 251,335 | $22M | 0.3% | 2026-Q1 |
| SCOTIA CAPITAL INC. added | 240,689 | $20M | 0.3% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 235,204 | $20M | 0.3% | 2026-Q1 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main added | 235,154 | $20M | 0.3% | 2026-Q1 |
| Northwest & Ethical Investments L.P. trimmed | 220,474 | $19M | 0.3% | 2026-Q1 |
| Zurcher Kantonalbank (Zurich Cantonalbank) trimmed | 209,029 | $18M | 0.3% | 2026-Q1 |
| NICOLA WEALTH MANAGEMENT LTD. added | 202,800 | $18M | 0.3% | 2026-Q1 |
| Martin Investment Management, LLC new | 184,293 | $16M | 0.2% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 182,915 | $16M | 0.2% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 178,380 | $15M | 0.2% | 2026-Q1 |
| Swiss Life Asset Management Ltd added | 172,158 | $15M | 0.2% | 2026-Q1 |
| Korea Investment CORP added | 165,079 | $14M | 0.2% | 2026-Q1 |
| CIDEL ASSET MANAGEMENT INC added | 163,724 | $14M | 0.2% | 2026-Q1 |
| CANADA LIFE ASSURANCE Co added | 163,141 | $14M | 0.2% | 2026-Q1 |
| QV Investors Inc. trimmed | 160,335 | $14M | 0.2% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 159,728 | $14M | 0.2% | 2026-Q1 |
| BANK OF NOVA SCOTIA trimmed | 153,432 | $13M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 135,982 | $12M | 0.2% | 2026-Q1 |
| J. Safra Sarasin Holding AG trimmed | 135,144 | $12M | 0.2% | 2026-Q1 |
| MARSHALL WACE, LLP added | 127,973 | $11M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 120,878 | $10M | 0.1% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 120,534 | $10M | 0.1% | 2026-Q1 |
| Quadrature Capital Ltd added | 115,543 | $10M | 0.1% | 2026-Q1 |
| UniSuper Management Pty Ltd | 80,364 | $10M | 0.1% | 2026-Q1 |
| CIBC Asset Management Inc added | 108,849 | $9M | 0.1% | 2026-Q1 |
| Addenda Capital Inc. | 77,400 | $9M | 0.1% | 2026-Q1 |
| AVIVA PLC added | 98,361 | $8M | 0.1% | 2026-Q1 |
| Varma Mutual Pension Insurance Co | 98,300 | $8M | 0.1% | 2026-Q1 |
| BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp added | 97,520 | $8M | 0.1% | 2026-Q1 |
| Sienna Gestion | 82,400 | $7M | 0.1% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 80,846 | $7M | 0.1% | 2026-Q1 |
| LOUISBOURG INVESTMENTS INC. added | 78,568 | $7M | 0.1% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 77,750 | $7M | 0.1% | 2026-Q1 |
| Rockefeller Capital Management L.P. trimmed | 74,383 | $6M | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 70,746 | $6M | 0.1% | 2026-Q1 |
| HSBC HOLDINGS PLC trimmed | 69,476 | $6M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 4,745,669 | $448M | 6.4% | 2025-Q4 stale |
| JARISLOWSKY, FRASER Ltd trimmed | 4,082,124 | $440M | 6.3% | 2025-Q3 stale |
| Burgundy Asset Management Ltd. trimmed | 858,122 | $93M | 1.3% | 2025-Q3 stale |
| AXA Investment Managers S.A. new | 282,041 | $30M | 0.4% | 2025-Q3 stale |
| AXA S.A. added | 266,179 | $29M | 0.4% | 2025-Q2 stale |
| FIL Ltd trimmed | 243,421 | $26M | 0.4% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 247,267 | $23M | 0.3% | 2025-Q4 stale |
| JENNISON ASSOCIATES LLC added | 115,135 | $13M | 0.2% | 2025-Q2 stale |
| Grandeur Peak Global Advisors, LLC trimmed | 114,200 | $11M | 0.2% | 2025-Q4 stale |
| BAROMETER CAPITAL MANAGEMENT INC. added | 46,990 | $7M | 0.1% | 2025-Q3 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.