Fund · Alerian MLP ETF · measured from SEC filings
AMLP holdings
AMLP reports 14 holdings and behaves like 9.6 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-05-31. The fact sheet publishes the first number; this page computes the second, and traces it across 27 quarters of filings.
Measured concentration
as of 2026-05-31Computed by this site from the fund's SEC Form N-PORT filing; what the measure does not tell you · every fund in one table · hold it with other funds? X-ray the mix. Pricing: 100% at a quoted market price (level 1), one issuer country.
What stands out
as of 2026-05-31AMLP's largest investment is Plains All American Pipeline LP at 13.67% of net assets. Western Midstream Partners LP and Sunoco LP follow; the three together are 40.66%. Ten companies are 93.72% of the fund; the other 4 share the rest. Among the 721 equity funds measured here, AMLP behaves like 9.6 holdings against a median of 42.4 — 4.3 times more concentrated than the median. Across 27 quarterly filings AMLP has become more concentrated: it behaved like 14.4 at 2019-11-30 and 9.6 at 2026-05-31.
Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable equity funds on this site. Nothing here is a view on the fund.
Every filing since 2019
27Between 2019-11-30 and 2026-05-31, AMLP went from behaving like 14.4 equally weighted positions to 9.6 — 33% fewer, while its top ten went from 74.74% to 93.72% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-05-31 | 14 | 9.6 | 93.72% | 12.69% |
| 2026-02-28 | 14 | 9.8 | 93.46% | 12.64% |
| 2025-11-30 | 14 | 9.8 | 93.4% | 12.76% |
| 2025-08-31 | 14 | 9.8 | 93.33% | 12.25% |
| 2025-05-31 | 14 | 10 | 92.92% | 12.37% |
| 2025-02-28 | 14 | 9.5 | 93.72% | 13.43% |
| 2024-11-30 | 15 | 10 | 92.15% | 13.29% |
| 2024-08-31 | 15 | 10.1 | 91.76% | 12.49% |
Earlier filings (19 more, back to 2019-11-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-05-31 | 15 | 10 | 91.39% | 13.09% |
| 2024-02-29 | 16 | 10.8 | 88.6% | 13.1% |
| 2023-11-30 | 12 | 8.1 | 98.92% | 18.9% |
| 2023-08-31 | 15 | 10.3 | 91.32% | 12.59% |
| 2023-05-31 | 15 | 10 | 92.04% | 13.9% |
| 2023-02-28 | 16 | 11.7 | 88.35% | 10.91% |
| 2022-11-30 | 16 | 11.8 | 88.23% | 10.73% |
| 2022-08-31 | 16 | 12.3 | 84.43% | 10.39% |
| 2022-05-31 | 16 | 12.2 | 85.36% | 10.84% |
| 2022-02-28 | 16 | 12.6 | 83.97% | 10.87% |
| 2021-11-30 | 17 | 12.8 | 82.33% | 10.61% |
| 2021-08-31 | 17 | 12.5 | 82.28% | 10.9% |
| 2021-05-31 | 17 | 12.5 | 82.59% | 11.2% |
| 2021-02-28 | 20 | 13.6 | 78.6% | 11.12% |
| 2020-11-30 | 20 | 13.7 | 78.57% | 10.51% |
| 2020-08-31 | 21 | 14.1 | 76.89% | 11.19% |
| 2020-05-31 | 22 | 13.7 | 77.46% | 11.66% |
| 2020-02-29 | 21 | 13.6 | 78.3% | 10.9% |
| 2019-11-30 | 21 | 14.4 | 74.74% | 10.62% |
One row per filed reporting period, newest first, read from EDGAR. Quarterly because that is the public filing cadence. Rows marked * are published but held out of the comparison above; the methodology page says when and why.
Largest positions, as filed
as of 2026-05-31The 14 largest of 14 positions in AMLP's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: AMLP.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | Plains All American Pipeline Lp | 12.69% | 12.7% |
| 2 | Western Midstream Partners Lp | 12.65% | 25.3% |
| 3 | Sunoco Lp | 12.42% | 37.8% |
| 4 | Energy Transfer Lp | 12.39% | 50.2% |
| 5 | Enterprise Products Partners Lp | 12.06% | 62.2% |
| 6 | Mplx Lp | 11.23% | 73.4% |
| 7 | Hess Midstream Lp | 8.85% | 82.3% |
| 8 | Cheniere Energy Partners Lp | 4.36% | 86.6% |
| 9 | Usa Compression Partners Lp | 4.08% | 90.7% |
| 10 | Genesis Energy Lp | 3.00% | 93.7% |
| 11 | Suburban Propane Partners Lp | 2.32% | 96.0% |
| 12 | Global Partners Lp/ma | 2.22% | 98.3% |
| 13 | Delek Logistics Partners Lp | 1.74% | 100.0% |
| 14 | State Street Institutional Treasury Plus Money Market Fund | 0.00% | 100.0% |
Returns the fund reported
2019-09 – 2026-05Monthly total returns from Item B.5 of AMLP's own filings, 81 months on record. Not computed here and not from a price feed.
Cross-checked against a series computed separately from prices: median difference — percentage points over 0 months, which is roughly the distributions. Every month with the filing it came from: AMLP.json · all funds.
Since the previous filing
2026-02-28 → 2026-05-3114 positions became 14: 0 added (0.0% of the fund at the later date), 0 dropped (0.0% at the earlier date). Half the sum of all weight changes, a turnover proxy: 1.8%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of AMLP compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-02-28 | 2026-05-31 | Largest decreases | 2026-02-28 | 2026-05-31 |
|---|---|---|---|---|---|
| Western Midstream Partners Lp | 11.46% | 12.65% | Genesis Energy Lp | 3.55% | 3.00% |
| Usa Compression Partners Lp | 3.86% | 4.08% | Hess Midstream Lp | 9.19% | 8.85% |
| Energy Transfer Lp | 12.19% | 12.39% | Mplx Lp | 11.49% | 11.23% |
| Enterprise Products Partners Lp | 11.91% | 12.06% | Sunoco Lp | 12.61% | 12.42% |
| Plains All American Pipeline Lp | 12.64% | 12.69% | Cheniere Energy Partners Lp | 4.55% | 4.36% |
| Suburban Propane Partners Lp | 2.43% | 2.32% |
Asset categories and pricing
as of 2026-05-31100.00% equity as filed; 100.0% carried at a quoted market price (fair-value level 1). Categories and levels are the filer's; what a low level-1 share does and does not mean is in the measure's page.
Neighbours by effective holdings, equity funds
10Every measured equity fund lined up by how many holdings it behaves like; these sit either side of AMLP (9.6). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| ELM Elm Market Navigator ETF | 18 | 6.7 | 90.37% | 2026-06-30 |
| XLSR State Street(R) US Sector Rotation ETF | 29 | 7.2 | 88.52% | 2026-06-30 |
| EPU iShares MSCI Peru and Global Exposure ETF | 34 | 8 | 73.44% | 2026-05-31 |
| EWS iShares MSCI Singapore ETF | 20 | 8.2 | 80.68% | 2026-05-31 |
| IHE iShares U.S. Pharmaceuticals ETF | 58 | 8.7 | 76.11% | 2026-06-30 |
| FLKR Franklin FTSE South Korea ETF | 159 | 9.7 | 67.9% | 2026-06-30 |
| PSFF Pacer Swan SOS Fund of Funds ETF | 13 | 9.7 | 92.19% | 2026-07-31 |
| XLY State Street(R) Consumer Discretionary Select Sector SPDR(R) ETF | 50 | 9.8 | 69.18% | 2026-06-30 |
| DRSK Aptus Defined Risk ETF | 23 | 9.8 | 97.18% | 2026-07-31 |
| XLE State Street(R) Energy Select Sector SPDR(R) ETF | 23 | 9.9 | 75.57% | 2026-06-30 |
Essays that examine AMLP
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Mentions are detected across the full text of every article, so an appearance may be a passing comparison rather than the subject. Nothing here is a recommendation to buy or sell — see the disclaimer.