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SOBO in the 13F filings

South Bow Corp · CUSIP 83671M105

Sector · EnergyTheme · Energy and power infrastructure· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
22
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 2 listed it in both
Shares listed
30,082,073
combined, among listed positions
Reported value
$1.0bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 16 buyers (opened or added shares) and 6 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +9,976,736.

Managers listing SOBO in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

22 of 22 holders

ActionFiling
Capital Research Global Investors10,278,370$342m0.05%Newnew13 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)9,671,599$322munder 0.1%Trimmed-411,25915 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc5,237,110$175munder 0.1%Trimmed-1,218,92215 May 2026 (the filing on sec.gov)
Invesco Ltd1,522,659$51munder 0.1%Trimmed-51012 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,389,388$46munder 0.1%Added+623,45615 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.442,774$15munder 0.1%Added+433,54715 May 2026 (the filing on sec.gov)
Citadel Advisors LLC402,525$13munder 0.1%Trimmed-297,67515 May 2026 (the filing on sec.gov)
Man Group PLC236,872$7.9munder 0.1%Added+119,20115 May 2026 (the filing on sec.gov)
Millennium Management LLC222,373$7.4munder 0.1%Trimmed-18,10215 May 2026 (the filing on sec.gov)
Jane Street Group LLC156,308$5.2munder 0.1%Added+109,81312 May 2026 (the filing on sec.gov)
Capital World Investors109,565$3.6munder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Quantbot Technologies LP108,408$3.6m0.15%Added+36,59713 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC80,726$2.7munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC43,340$1.4munder 0.1%Added+19,36515 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC37,732$1.3munder 0.1%Added+11,80927 Oct 2026 (the filing on sec.gov)
Renaissance Technologies LLC34,880$1.2munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
AQR Capital Management LLC28,560$950kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
AllianceBernstein LP29,590$813kunder 0.1%Trimmed-20315 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC19,163$639kunder 0.1%Added+7,38715 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP12,038$401kunder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP11,993$400kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP6,100$203kunder 0.1%Newnew14 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (8)

Exited (0)

No exit shown by a manager’s own filing.

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
3 in Q4 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

0123Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
SOBO by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20243$328m30
Q1 20253$820m22
Q2 20252$335m20
Q3 20253$273m12
Q4 20252$179m615
Q1 20263$520m166
Q2 20261$771m1011

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

SOBO and GEV →SOBO and XOM →SOBO and CVX →Choose a stock to compare with SOBO →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own SOBO, latest filings →Back to the 13F Explorer →