Plains All American Pipeline, L.P. - Limited Partnership
US ˙ NasdaqGS ˙ US7265031051

SecurityPAA / Plains All American Pipeline, L.P. - Limited Partnership
InstitutionBlackstone Group Inc
Latest Disclosed Ownership18,740,802 shares
Latest Disclosed Value $ 418,482,109
Blackstone Group Inc reports 40.99% increase in ownership of PAA / Plains All American Pipeline, L.P. - Limited Partnership

On May 15, 2026 - Blackstone Group Inc filed a 13F-HR form disclosing ownership of 18,740,802 shares of Plains All American Pipeline, L.P. - Limited Partnership (US:PAA) valued at $418,482,109 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,292,576 shares of Plains All American Pipeline, L.P. - Limited Partnership. This represents a change in shares of 40.99% during the quarter. The current value of the position is $429,539,182 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 18,740,802 5,448,226 40.99 418,482 75.29 1.2557
2026-02-17 2025-12-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 13,292,576 -471,647 -3.43 238,735 1.67 0.9432
2025-11-14 2025-09-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 13,764,223 -2,222,237 -13.90 234,818 -19.82 0.9452
2025-08-14 2025-06-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 15,986,460 -304,603 -1.87 292,872 -10.11 1.2505
2025-05-15 2025-03-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 16,291,063 1,857,902 12.87 325,821 32.17 1.3531
2025-02-14 2024-12-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 14,433,161 -15,756,944 -52.19 246,518 -52.99 1.1219
2024-11-14 2024-09-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 30,190,105 554,068 1.87 524,402 -0.93 2.2872
2024-08-14 2024-06-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 29,636,037 6,097,002 25.90 529,300 28.05 2.2117
2024-05-15 2024-03-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 23,539,035 318,944 1.37 413,345 17.50 1.6691
2024-02-14 2023-12-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 23,220,091 -1,046,931 -4.31 351,784 -5.38 1.5813
2023-11-14 2023-09-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 24,267,022 13,787,485 131.57 371,771 151.60 1.5575
2023-08-14 2023-06-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 10,479,537 6,126,986 140.77 147,761 172.24 0.6320
2023-05-15 2023-03-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 4,352,551 -3,391,685 -43.80 54,276 -40.40 0.2222
2023-02-14 2022-12-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 7,744,236 -5,024,027 -39.35 91,072 67,864.18 0.3454
2023-02-10 2022-09-30 13F/A-1 PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 12,768,263 -4,333,626 -25.34 134 -99.92 0.4962
2022-11-14 2022-09-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 12,768,263 -4,333,626 134,322 0.4192
2022-08-15 2022-06-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 17,101,889 -7,968,692 -31.79 167,941 -37.74 0.5588
2022-05-16 2022-03-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 25,070,581 -9,284,969 -27.03 269,759 -15.93 0.6846
2022-02-14 2021-12-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 34,355,550 -476,456 -1.37 320,881 -9.42 0.8038
2022-01-28 2021-09-30 13F/A-1 PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 34,832,006 -200,509 -0.57 354,242 -10.99 0.7897
2021-11-16 2021-09-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 34,832,006 -200,509 354,242 0.7918
2021-08-18 2021-06-30 13F/A-1 PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 35,032,515 459,082 1.33 397,969 26.49 0.8979
2021-08-16 2021-06-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 35,032,515 459,082 397,969 0.6350
2021-05-19 2021-03-31 13F/A-1 PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 34,573,433 -305,869 -0.88 314,618 9.47 0.6269
2021-05-17 2021-03-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 34,573,433 -305,869 314,618 0.5354
2021-02-16 2020-12-31 13F PLAINS ALL AMER PIPELINE UNIT LTD PARTN 726503105 34,879,302 1,685,028 5.08 287,405 44.79 1.0105
2020-11-16 2020-09-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 33,194,274 -853,175 -2.51 198,502 -34.05 0.7698
2020-08-18 2020-06-30 13F/A-1 PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 34,047,449 34,047,449 300,979 1.2721
2020-08-14 2020-06-30 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 34,047,449 34,047,449 300,979 678,247.3425
2018-05-15 2018-03-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 0 -17,836,735 -100.00 0 -100.00
2018-02-14 2017-12-31 13F PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 17,836,735 17,836,735 368,150 1.4987
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.