Plains GP Holdings LP
PAGP- Exchange
- Nasdaq
- Industry
- Pipe Lines (No Natural Gas)
- SEC CIK
- 0001581990
No open-market purchases or sales by Plains GP Holdings LP insiders were filed in the last 90 days; 341 institutions reported holding it in 13F filings for Q2 2026, worth $3.89B in total; no superinvestor holds it.
Holders of 5% or more of PAGP
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Plains GP Holdings LP, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Massachusetts Financial Services Co | 13G | 5.10%10.1M shares | +0.10 ppfrom 5.00% | May 15, 20252 filings | Aug 4, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
2 Schedule 13D and 13G filings on Plains GP Holdings LP, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 4, 20254:24 PM ET | Massachusetts Financial Services Co | 13G | 5.10%10.1M shares | +0.10 ppfrom 5.00% | Jun 30, 2025 | SEC |
| May 15, 202511:06 AM ET | Massachusetts Financial Services Co | 13G/A | 5.00%9.87M shares | – | Mar 31, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Plains GP Holdings LP shares.
No Form 144 notices for Plains GP Holdings LP are on file.