Institutional ownership · Form 13F
SOBO institutional ownership
South Bow Corp: reported institutional holdings as of 2026-06-30 (filed through 2026-08-31), aggregated by StockEyes from SEC Form 13F information tables. SOBO is one of 2732 tickers in the validated publication set. Mapping coverage in this publication set: 4562 of 6046 universe tickers have at least one validated CUSIP mapping (75.5%). Latest-quarter filed value resolved to any listed ticker: 77.3%; resolved to this universe: 77.2%.
SOBO: change since the prior quarter's filings
The number of reporting managers edged up from 298 in the quarter ended 2026-03-31 to 302 in the quarter ended 2026-06-30 (+4, 1.3%). Total reported shares fell to 129,091,873 (-2,806,311, 2.1%), against the direction of the manager count. Among the 25 managers listed as top holders in both quarters, the largest increases were FMR LLC (+12,223,172 shares) and BANK OF AMERICA CORP /DE/ (+763,792 shares), among 12 managers who added shares, and the largest decreases were ROYAL BANK OF CANADA (-1,835,027 shares) and BANK OF MONTREAL /CAN/ (-1,038,025 shares), among 13 managers who reduced shares. MACKENZIE FINANCIAL CORP (2,535,573 shares), AMERICAN CENTURY COMPANIES INC (2,132,078 shares) and 3 more entered the listed top holders; Capital Research Global Investors (10,278,370 shares in the prior quarter), Capital International Investors (4,313,599 shares in the prior quarter) and 3 more dropped out of the listed top holders.
New to 13F data? Read how to read a 13F filing, or see where institutions moved overall in the Smart Money Report.
Reported totals, quarter ended 2026-06-30
302 reporting managers held 129,091,873 shares, reported value $4,388,931,348 exactly as filed. Values are position values transcribed from the filings, not current market prices.
Reported quarter-over-quarter change (quarter ended 2026-03-31 to quarter ended 2026-06-30): reporting managers +4, reported shares -2,806,311 (-2.13%), reported value +4.34%. These changes compare two filing snapshots.
Shares outstanding check: 208,200,000 shares reported by the issuer (SEC XBRL, period ended 2025-12-31). Reported 13F shares equal 62.0% of that figure. This page passed the publication sanity gate before listing.
SOBO in this quarter's filings
Concentration check: the largest reported position, FMR LLC with 21,894,771 shares, is 17.0% of all shares reported for SOBO this quarter. The five largest reporting managers together account for 44.1% of the reported total, so the headline total is spread across a broad manager base rather than a few holders.
Reported quarter-over-quarter change: the reporting-manager count rose by 4 versus the quarter ended 2026-03-31, and reported shares moved -2.13% (-2,806,311 shares). That is a comparison of two filing snapshots, not a record of trades on any single day.
Shares-outstanding cross-check: reported 13F shares equal 62.0% of the issuer share count used at the publication gate (208,200,000 shares, issuer period ended 2025-12-31). The gate publishes a ticker only when that relationship is plausible; lending chains can push reported totals above a simple ownership share, which is why the figure is a sanity check and not an ownership percentage.
Largest reporting managers, SOBO
| # | Manager | Shares | Value as filed | Share of reported total |
|---|---|---|---|---|
| 1 | FMR LLC | 21,894,771 | $771,302,367 | 17.0% |
| 2 | ROYAL BANK OF CANADA | 14,568,356 | $513,388,000 | 11.3% |
| 3 | Clearbridge Investments, LLC | 8,855,108 | $312,054,010 | 6.9% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 6,048,601 | $213,074,067 | 4.7% |
| 5 | BANK OF MONTREAL /CAN/ | 5,554,724 | $195,477,565 | 4.3% |
| 6 | THORNBURG INVESTMENT MANAGEMENT INC | 3,721,332 | $130,974,108 | 2.9% |
| 7 | MACKENZIE FINANCIAL CORP | 2,535,573 | $126,677,227 | 2.0% |
| 8 | CIBC WORLD MARKET INC. | 3,403,902 | $119,802,003 | 2.6% |
| 9 | DIMENSIONAL FUND ADVISORS LP | 3,043,017 | $107,239,259 | 2.4% |
| 10 | Connor, Clark & Lunn Investment Management Ltd. | 2,779,943 | $97,829,606 | 2.2% |
| 11 | BANK OF AMERICA CORP /DE/ | 2,757,560 | $97,176,415 | 2.1% |
| 12 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 2,157,673 | $76,036,397 | 1.7% |
| 13 | AMERICAN CENTURY COMPANIES INC | 2,132,078 | $75,105,670 | 1.7% |
| 14 | TD Waterhouse Canada Inc. | 1,946,786 | $67,112,898 | 1.5% |
| 15 | VANGUARD FIDUCIARY TRUST CO | 1,844,124 | $64,962,956 | 1.4% |
Manager names and figures are transcribed from each manager's own Form 13F information table. A manager listing shares in this snapshot does not mean it holds them today.
Reported change, 2026-03-31 to 2026-06-30
| Quarter ended | Filed through | Reporting managers | Reported shares | Value as filed |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-29 | 298 | 131,898,184 | $4,206,414,642 |
| 2026-06-30 | 2026-08-31 | 302 | 129,091,873 | $4,388,931,348 |
Every change figure on this page is a reported quarter-over-quarter change between filing snapshots. It is not real-time trading activity.
SOBO reported totals over time
Quarter ended 2026-06-30: 302 reporting managers · 129,091,873 reported shares · $4,388,931,348 value as filed.
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Quarter-end 13F filed data, long positions only; filings arrive up to 45 days after quarter end.
CUSIPs behind the SOBO total
The validated bridge mapped 1 current CUSIP(s) to SOBO for this quarter: 83671M105. Option pseudo-CUSIPs, units, warrants, and preferred classes are excluded from these common-share totals. Mapping coverage in this publication set: 4562 of 6046 universe tickers have at least one validated CUSIP mapping (75.5%). Latest-quarter filed value resolved to any listed ticker: 77.3%; resolved to this universe: 77.2%.
What this page is and is not
Form 13F reports are quarterly holdings snapshots. Managers file up to about 45 days after quarter-end, so these figures describe reported positions as of the quarter-end date, not holdings today. 13F lists reportable long positions from managers above the SEC reporting threshold and omits short positions entirely.
This page is informational only. It is not investment advice, a recommendation, or a signal to buy or sell. Source: SEC Form 13F bulk data set for filings through 2026-08-31 (period ended 2026-06-30), joined to tickers through StockEyes' validated CUSIP bridge. Methodology and coverage are documented on the institutional ownership hub.
Insider transactions for SOBO (officer and director buys and sells) are covered by InsiderTrace: insidertrace.com/stock/sobo. StockEyes does not duplicate insider transaction tables.
Related StockEyes pages
Latest headlines tagged SOBO are on the market news wire. Upcoming earnings and market dates are on the events calendar. The term itself is defined in the institutional investor glossary entry, and the research workflow behind pages like this one is walked through in how to research a stock and how to compare SEC filings.