13F Portfolios

LANSDOWNE PARTNERS (UK) LLP 13F: Portfolio & Holdings

This page tracks the 13F filings for LANSDOWNE PARTNERS (UK) LLP (SEC CIK 0001608485), a LONDON-based hedge fund managing $1.90 billion across 22 reported positions as of Q1 2026, per its quarterly SEC Form 13F-HR filing. The Q1 2026 13F filing shows 45.7% of Lansdowne Partners's reported portfolio concentrated in Technology.

By portfolio weight, the top holdings are TAIWAN SEMICONDUCTOR MANUFAC (TSM) at 24.19%, LINDE PLC (LIN) at 11.93%, and ANALOG DEVICES INC (ADI) at 11.32%. Ranked by the share of each peer fund's 13F equity portfolio that overlaps with Lansdowne Partners's disclosed positions as of Q1 2026, the closest peers are AltaRock Partners 13F (38.2%), Rudius 13F (37.8%), and BlueSpruce 13F (37.7% overlap).

Most recently, the manager opened a new position in SCHLUMBERGER LTD (SLB) (8.14%), fully exited CRH PLC (CRH) (CRH) , added to SMURFIT WESTROCK PUBLIC LIMITED COMPANY (SW) (+627.08% shares), and trimmed ROCKWELL AUTOMATION INC (ROK) (-54.77% shares). View the full Q1 2026 allocation shift and trading report →

13F AUM
$1.9B
Equity Positions
22
Top-10 Concentration
91.8%
Largest Sector · 45.7%
Technology
Longest-Held Position · 41 qtrs
DAL
Median Holding Period
3 Qtrs

Top 10 Holdings — Lansdowne Partners — Q1 2026

Largest 13F positions disclosed by Lansdowne 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 Lansdowne 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 TAIWAN SEMICONDUCTOR MANUFAC TSM Technology 24.19% $451.4M Position History All Holders
2 LINDE PLC LIN Basic Materials 11.93% $222.7M Position History All Holders
3 ANALOG DEVICES INC ADI Technology 11.32% $211.3M Position History All Holders
4 DELTA AIR LINES INC DEL DAL Industrials 8.85% $165.3M Position History All Holders
5 SCHLUMBERGER LTD NEW SLB Energy 8.14% $152.0M Position History All Holders
6 ARM HOLDINGS PLC ARM Technology 7.58% $141.5M Position History All Holders
7 UNITED AIRLINES HOLDINGS INC UAL Industrials 7.55% $140.9M Position History All Holders
8 TECK RESOURCES LTD., CLASS B TECK Basic Materials 5.66% $105.6M Position History All Holders
9 SMURFIT WESTROCK PUBLIC LIMITED COMPANY SW Consumer Cyclical 3.99% $74.5M Position History All Holders
10 ACUSHNET HLDGS CORP GOLF Consumer Cyclical 2.62% $48.9M Position History All Holders

View Lansdowne 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 stock22 positions · click any tile for institutional holders
Allocation by sector6 sectors · same palette as the stock tiles

Quarterly shiftsQ1 2026 vs previous quarter

Top movers in Lansdowne 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
SMURFIT WESTROCK PUBLIC LIMITED COMPANYSW+3.26%+627.08%
MEDTRONIC PLCMDT+0.19%+182.94%
ARM HOLDINGS PLCARM+3.80%+98.17%
LINDE PLCLIN+4.82%+97.49%
RALLIANT CORPRAL+0.06%+94.91%
Top sells
CompanyTickerΔ WeightΔ Shares
ROCKWELL AUTOMATION INCROK-0.62%-54.77%
ACUSHNET HLDGS CORPGOLF-0.48%-1.28%
Top new positions
CompanyTickerNew weight
SCHLUMBERGER LTDNEWSLB8.14%
BAKER HUGHES COMPANYNEWBKR0.13%
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+$502.6M · +36.86% QoQ
Δ Shares heldNet +25.96% vs. prior quarter

Holding period analytics

Distribution of holding periods for all 248 stocks the fund has ever held (up to selected quarter):

Which Funds Hold a Similar Portfolio to Lansdowne Partners?

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

Funds with the most portfolio overlap with Lansdowne Partners in Q1 2026 — Ranked by overlap percentage
# Fund Shared Positions Overlap %
1 AltaRock Partners 13F 1 38.2%
2 Rudius 13F 1 37.8%
3 BlueSpruce 13F 2 37.7%
4 Voyager Global Management 13F 2 28.6%
5 AKO Capital 13F 4 28.4%

How Has Lansdowne Partners's AUM Changed Over Time?

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

Methodology & FAQ

How We Track Lansdowne 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 Lansdowne Partners's 13F filing disclose about their portfolio?

A Form 13F-HR filed by Lansdowne 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 Lansdowne 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 Lansdowne Partners's portfolio allocations?

Conviction is measured by portfolio weight — the percentage of Lansdowne 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 Lansdowne 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 Lansdowne Partners’s 13F represents the reported long book, which may differ materially from its net economic exposure.

When is Lansdowne 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 Lansdowne 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 Lansdowne 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. Lansdowne 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.