As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of Plains All American Pipeline LP. The largest reported stake is ALPS Advisors, Inc.'s, at 9.82%. 7 filings are on record since July 9, 2025 (Schedule 13G/A, October 7, 2026).
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Key facts
- · Reporting person: ALPS Advisors, Inc. · Sole voting: 0 · Shared voting: 69,261,580 · Sole dispositive: 0 · Shared dispositive: 69,261,580 · SCHEDULE 13G/A, 2026-10-07
- · Reporting person: CIBC Private Wealth Group LLC · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-10-05
- · Holder: ALPS Advisors, Inc. · Percent: 9.99% · SCHEDULE 13G/A
- · Holder: ALPS Advisors, Inc. · Percent: 10.36% · SCHEDULE 13G/A
- · Holder: Alerian MLP ETF · Percent: 10.78% · SCHEDULE 13G/A
Plains All American Pipeline LP has 7 Schedule 13D or 13G filings on record since 2025-07-09. 1 holder's latest filing reports 5% or more of common units representing limited partner interests. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| ALPS Advisors, Inc. | 9.82% | 69,261,580 | SCHEDULE 13G/A, 2026-10-07 | 2026-09-30 |
| CIBC Private Wealth Group LLC | 0% | 0 | SCHEDULE 13G/A, 2026-10-05 | 2024-12-31 |
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More on Plains All American Pipeline LP and the records around it.
Plains All American Pipeline LP elsewhere on the record
- Leadership changes Jun 2026
- Who owns it
Companies that share a holder
- CIBC Private Wealth Group LLC also filed stake reports on 5 other companies: ARKO Petroleum Corp. (Aug 2026), INFINITY NATURAL RESOURCES, INC. (Feb 2026)
- ALPS Advisors, Inc. also filed stake reports on 9 other companies: Delek Logistics Partners LP (Oct 2026), Genesis Energy LP (Oct 2026), Global Partners LP (Oct 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| ALPS Advisors, Inc. | 0 | 69,261,580 | 0 | 69,261,580 | SCHEDULE 13G/A, 2026-10-07 |
| Alerian MLP ETF | 0 | 69,239,130 | 0 | 69,239,130 | SCHEDULE 13G/A, 2026-10-07 |
| CIBC Private Wealth Group LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-10-05 |
The latest filing identifies Plains All American Pipeline LP by CUSIP 726503105 and gives its principal executive office as 333 Clay Street, Suite 1600, Houston, TX 77002 (SCHEDULE 13G/A, 2026-10-07).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-09 | ALPS Advisors, Inc. | 10.58% | SCHEDULE 13G/A |
| 2025-10-08 | ALPS Advisors, Inc. | 10.82% | SCHEDULE 13G/A |
| 2026-01-06 | Alerian MLP ETF | 10.78% | SCHEDULE 13G/A |
| 2026-05-11 | ALPS Advisors, Inc. | 10.36% | SCHEDULE 13G/A |
| 2026-09-10 | ALPS Advisors, Inc. | 9.99% | SCHEDULE 13G/A |
| 2026-10-05 | CIBC Private Wealth Group LLC | 0% | SCHEDULE 13G/A |
| 2026-10-07 | ALPS Advisors, Inc. | 9.82% | SCHEDULE 13G/A |
Questions about who owns Plains All American Pipeline LP
Who owns Plains All American Pipeline LP?
On this page, one holder's latest ownership filing reports 5% or more of Plains All American Pipeline LP: ALPS Advisors, Inc. (9.82%, Schedule 13G/A, filed 2026-10-07).
When did ALPS Advisors, Inc. buy into Plains All American Pipeline LP?
The filings give report dates, not purchase dates. The earliest filing from ALPS Advisors, Inc. on this page is the Schedule 13G/A, filed 2025-07-09, reporting 10.58%; its latest, Schedule 13G/A filed 2026-10-07, reports 9.82%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 7 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Plains All American Pipeline LP
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| September 29, 2026 | Leadership change: Chris Chandler departs | — | Leadership changes | Source |
| June 2, 2026 | Leadership change: Russ Montgomery appointed, Chief Accounting Officer | — | Leadership changes | Source |
| May 13, 2026 | Leadership change: Cynthia B. Taylor appointed, Director | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.