13F Portfolios

140 Summer Partners LP 13F: Portfolio & Holdings

This page tracks the 13F filings for 140 Summer Partners LP (SEC CIK 0001820788), a NEW YORK-based hedge fund managing $1.10 billion across 20 reported positions as of Q1 2026, per its quarterly SEC Form 13F-HR filing. As evidenced by the Q1 2026 13F report, 140 Summer Partners allocates 20.7% of 13F-reported holdings to Industrials — largest sector exposure.

By portfolio weight, the top holdings are MASTEC INC (MTZ) at 9.35%, PG&E CORP (PCG) at 7.65%, and VIKING HOLDINGS LTD (VIK) at 7.46%. Ranked by the share of each peer fund's 13F equity portfolio that overlaps with 140 Summer Partners's disclosed positions as of Q1 2026, the closest peers are High Ground Investment Management 13F (30.9%), Third Point 13F (27.6%), and Browning West 13F (27.0% overlap).

Most recently, the manager opened a new position in PG&E CORP (PCG) (7.65%), fully exited PENNYMAC FINL SVCS INC NEW (PFSI) , added to VISTRA CORP. (VST) (+39.68% shares), and trimmed ECHOSTAR CORP (SATS) (-42.16% shares). View the full Q1 2026 allocation shift and trading report →

13F AUM
$1.1B
Equity Positions
20
Top-10 Concentration
70.0%
Largest Sector · 20.7%
Industrials
Longest-Held Position · 22 qtrs
TMUS
Median Holding Period
2 Qtrs

Top 10 Holdings — 140 Summer Partners — Q1 2026

Largest 13F positions disclosed by 140 Summer Partners, ranked by portfolio weight. Full multi-quarter history and the broader institutional holder base for each ticker linked per row.

Top 10 disclosed equity positions for 140 Summer Partners in Q1 2026 — ranked by portfolio weight; share count and market value sourced from SEC Form 13F-HR filings.
# Issuer Ticker Sector Weight Position Value Detail
1 MASTEC INC MTZ Industrials 9.35% $105.9M Position History All Holders
2 PG&E CORP NEW PCG Utilities 7.65% $86.7M Position History All Holders
3 VIKING HOLDINGS LTD VIK Consumer Cyclical 7.46% $84.5M Position History All Holders
4 GAMING & LEISURE P GLPI Real Estate 7.30% $82.7M Position History All Holders
5 T-MOBILE US INC TMUS Communication Services 7.17% $81.2M Position History All Holders
6 KODIAK GAS SERVICES INC NEW KGS Energy 6.67% $75.6M Position History All Holders
7 VISTRA CORP. VST Utilities 6.41% $72.6M Position History All Holders
8 CAPITAL ONE FINL CORP COF Financial Services 6.32% $71.6M Position History All Holders
9 AERCAP HOLDINGS NV AER Industrials 6.16% $69.8M Position History All Holders
10 ECHOSTAR CORP SATS Communication Services 5.48% $62.1M Position History All Holders

View 140 Summer Partners's Q1 2026 allocation shift and trading report →

Latest

Portfolio composition

Sectors, concentrations, and a tap-through treemap of every position in the fund's latest 13F.

Allocation by stock20 positions · click any tile for institutional holders
Allocation by sector9 sectors · same palette as the stock tiles

Quarterly shiftsQ1 2026 vs previous quarter

Top movers in 140 Summer Partners's Form 13F versus the prior reporting quarter. Δ Weight is the change in portfolio weight (percentage points); Δ Shares is the percent change in share count.

Top buys
CompanyTickerΔ WeightΔ Shares
VISTRA CORP.VST+2.05%+39.68%
VIKING HOLDINGS LTDVIK+2.20%+21.96%
SOMNIGROUP INTERNATIONAL INCSGI+0.11%+9.27%
JBT MAREL CORPORATIONJBTM+0.00%+4.24%
GAMING & LEISURE PGLPI+0.96%+2.49%
Top sells
CompanyTickerΔ WeightΔ Shares
ECHOSTAR CORPSATS-2.30%-42.16%
CAPITAL ONE FINL CORPCOF-5.25%-35.84%
OPTIMUM COMMUNICATIONS INCOPTU-0.11%-19.70%
MASTEC INCMTZ3.00%-12.03%
AERCAP HOLDINGS NVAER-0.22%-10.50%
Top exited positions

Waterfall analysis

Top movers versus the prior reporting quarter. Left panel bridges market-value change in USD millions; right panel shows share-count change in %.

Δ Market value-$148.2M · -11.57% QoQ
Δ Shares heldNet +31.16% vs. prior quarter

Holding period analytics

Distribution of holding periods for all 88 stocks the fund has ever held (up to selected quarter):

Which Funds Hold a Similar Portfolio to 140 Summer Partners?

Ranked by percentage of the peer fund's 13F equity portfolio that overlaps with 140 Summer Partners's positions in Q1 2026.

Funds with the most portfolio overlap with 140 Summer Partners in Q1 2026 — Ranked by overlap percentage
# Fund Shared Positions Overlap %
1 High Ground Investment Management 13F 1 30.9%
2 Third Point 13F 4 27.6%
3 Browning West 13F 1 27.0%
4 Hill City 13F 1 24.8%
5 Kite Lake Capital Management 13F 2 23.4%

How Has 140 Summer Partners's AUM Changed Over Time?

Quarterly 13F-reported AUM for 140 Summer Partners, derived from aggregate reported position market values disclosed to the U.S. SEC.

Methodology & FAQ

How We Track 140 Summer Partners Holdings

Our data is systematically aggregated directly from quarterly Form 13F-HR disclosures submitted to the U.S. Securities and Exchange Commission (SEC).

  • Who Must File (Reporting Threshold): This dataset includes filings from U.S. institutional investment managers, hedge funds, mutual funds, university endowments, and family offices managing at least $100 million in Section 13(f) securities (including equities, options, convertibles, ETFs, and warrants).
  • What is Included (Data Scope): By regulation, 13F filings include long positions in U.S. exchange-listed stocks, ETFs, shares of closed-end investment companies, and convertible debt, as defined in the SEC's official Section 13(f) securities list . For listed options (calls/puts) the reported value is based on the notional value.
  • Portfolio Weight Explained (Metric Definition): “Portfolio Weight” shows how much of a fund's total reported 13F portfolio value (excluding listed options) is allocated to a specific position on the reporting date.
  • How to Use This Data (Interpretation): Quarter-over-quarter changes in shares and portfolio weight reflect a combination of active trading and market price movements. These are descriptive metrics of fund allocation, not explicit buy or sell signals.
What does 140 Summer Partners's 13F filing disclose about their portfolio?

A Form 13F-HR filed by 140 Summer Partners with the U.S. SEC discloses all long positions in Section 13(f) securities — U.S.-listed equities, ETFs, closed-end funds, and listed put/call options — held at quarter-end with a market value of at least $200,000 or 10,000 or more shares. Pactolio aggregates these filings to surface 140 Summer Partners’s reported portfolio weights, share counts, and quarter-over-quarter allocation shifts in a structured format. The filing represents a point-in-time snapshot of disclosed long-side exposure, not a real-time or complete view of the fund’s total book.

How do you measure conviction in 140 Summer Partners's portfolio allocations?

Conviction is measured by portfolio weight — the percentage of 140 Summer Partners’s total reported 13F market value allocated to a given position — rather than by absolute share count or dollar value alone. A position representing a disproportionately large share of the fund’s disclosed book signals high-conviction allocation, regardless of whether it ranks among the fund’s largest absolute holdings. Tracking how that weight changes quarter-over-quarter separates active reallocation decisions from passive price appreciation drift.

What is excluded from 140 Summer Partners's 13F — short positions, swaps, and derivatives?

SEC Form 13F requires disclosure of long positions only. Specifically excluded are: short interest, total return swaps, credit default swaps, and all OTC derivatives — none of which appear in 13F filings regardless of position size. Listed put and call options must be disclosed but are excluded from portfolio weight calculations on this platform so that reported weights reflect direct equity exposure and remain comparable across filers. This means 140 Summer Partners’s 13F represents the reported long book, which may differ materially from its net economic exposure.

When is 140 Summer Partners's 13F data available, and how large is the reporting lag?

Investment managers must submit Form 13F within 45 calendar days of each quarter-end (the T+45 deadline). Pactolio ingests filings directly from SEC EDGAR as they are published — managers who file early appear in our system before the deadline, while late filers are captured on their actual filing date. The quarter label shown at the top of this page reflects the most recently processed 13F cycle for 140 Summer Partners. The inherent reporting lag means the data always reflects positions as of the prior quarter-end, not current holdings.

Who must file a Form 13F with the SEC, and does 140 Summer Partners qualify?

Under SEC Rule 13f-1, any investment manager — including hedge funds, family offices, registered investment advisers, pension funds, and university endowments — that exercises investment discretion over $100 million or more in Section 13(f) securities at any point during a calendar year must file Form 13F for that year. 140 Summer Partners meets this threshold, which is why its holdings are publicly disclosed and accessible on this platform. The $100 million threshold is evaluated on a rolling basis, meaning new filers can enter and existing filers can exit the disclosure regime as AUM crosses that boundary.