DOSSIER · 13F-HR · Q1 2026

TORTOISE CAPITAL ADVISORS, L.L.C.

$9.6B in tracked AUM across 108 positions as of Q1 2026.

TC
CIK 0001280965 · last filed Mar 31, 2026
Total AUM
$9.6B
as of Q1 2026
Holdings
108
positions
Whale Score
73
73
strong
Activity
no data
changes this Q
AI Analysis · Q1 2026

Tortoise Capital Advisors' $9.60B Q1 2026 13F is the most one-thesis portfolio in this entire batch: North American energy infrastructure, expressed through 108 holdings with zero disguise. The largest positions — Targa Resources at 9.3%, Williams Cos at 8.7%, Energy Transfer at 7.9%, MPLX at 7.9%, Cheniere Energy at 7.6%, and Enterprise Products at 5.9% — are all midstream pipelines, gas processors, or LNG exporters. The quarter's activity was entirely consistent with that theme: every large increase was in a core midstream or energy-processing name (Cheniere +$280M, Targa +$264M, Williams +$154M, ONEOK +$126M, Energy Transfer +$124M, Enterprise +$104M), while every large decrease was either a midstream name being reset a few points (Sempra -$32M, Enbridge -$25M, Kinder Morgan -$12M) or a non-core energy name (Expand Energy -$14M, Clearway -$14M). Four new names entered — Marathon Petroleum, Chevron, Diamondback Energy, and Dell Technologies — adding downstream refining and a marginal tech post to an otherwise pure energy-infrastructure book.

Targa Resources ($889M), Williams Companies ($837M), Energy Transfer ($762M), MPLX ($757M), Cheniere Energy ($726M), and Enterprise Products ($562M) together represent 47.4% of the portfolio. These are not small speculative bets; they are the portfolio's anchors and they are held at $500M+ positions. The reason they anchor is that Tortoise has built a thesis around the same structural story: U.S. natural gas production growth from the Permian Basin and Marcellus/Utica shales, rising LNG export volumes from Gulf Coast facilities, and the pricing power that comes from energy infrastructure that has no substitute route to market.

Each of these six names is a different flavor of the same thesis. Targa and MPLX are NGL (natural-gas-liquid) gatherers and processors that monetize the liquids fractionation that comes out of every wellhead. Williams and Energy Transfer are long-haul interstate transmission systems that connect producing regions to consuming regions and export terminals. Cheniere is the largest U.S. LNG exporter, converting pipeline gas into supercooled cargo for Asia and Europe. Enterprise Products is the most diversified midstream franchise, with pipelines, storage, processing, and marine export facilities across the entire hydrocarbon chain.

Analysis generated by 13F Insight from SEC Form 13F filing data · Q1 2026. Methodology

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
TRGP
Targa Resources Corp.
$889M3.5M9.3%
02
WMB
WILLIAMS COS INC COM
$837M11.5M8.7%
03
ET
Energy Transfer LP
$762M39.5M7.9%
04
MPLX
MPLX LP
$757M13.3M7.9%
05
LNG
Cheniere Energy Inc.
$726M2.6M7.6%
06
EPD
Enterprise Products Partners L
$562M14.9M5.9%
07
OKE
ONEOK Inc
$551M6.1M5.7%
08
TRP
TC Energy Corp.
$501M8.0M5.2%
09
DTM
DT Midstream Inc
$405M3.0M4.2%
10
ENB
Enbridge Inc
$363M6.7M3.8%

Filing history

2026Q1Mar 31
$9.6B 22.2%
108 positionsView →
2025Q4Dec 31
$7.9B 52.3%
104 positionsView →
2025Q3Sep 30
$5.2B 32.7%
66 positionsView →
2025Q2Jun 30
$7.7B 50.3%
73 positionsLocked
2025Q1Mar 31
$5.1B 34.7%
38 positionsLocked
2024Q4Dec 31
$7.8B 0.6%
51 positionsLocked
2024Q3Sep 30
$7.8B 2.7%
105 positionsLocked
2024Q2Jun 30
$7.6B 5.6%
110 positionsLocked
2024Q1Mar 31
$7.2B 10.5%
113 positionsLocked
2023Q4Dec 31
$6.5B 1.3%
140 positionsLocked
2023Q3Sep 30
$6.6B 0.1%
142 positionsLocked
2023Q2Jun 30
$6.6B 1.5%
148 positionsLocked
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