13F Portfolios

KEYSTONE INVESTORS PTE LTD 13F: Portfolio & Holdings

This page tracks the 13F filings for KEYSTONE INVESTORS PTE LTD (SEC CIK 0001926253), a SINGAPORE-based hedge fund managing $1.10 billion across 77 reported positions as of Q4 2025, per its quarterly SEC Form 13F-HR filing. The Q4 2025 13F filing shows 33.6% of Keystone's reported portfolio concentrated in Technology. Reported 13F market value decreased quarter-over-quarter.

By portfolio weight, the top holdings are ALPHABET INC (GOOG) at 13.53%, NVIDIA CORPORATION (NVDA) at 9.06%, and SEA LTD., CLASS A, ADR (SE) at 7.52%. Ranked by the share of each peer fund's 13F equity portfolio that overlaps with Keystone's disclosed positions as of Q4 2025, the closest peers are Washington University in St. Louis 13F (89.4%), CAS Investment Partners 13F (83.2%), and Voyager Global Management 13F (64.9% overlap).

Most recently, the manager opened a new position in AMAZON COM INC (AMZN) (6.70%), fully exited TENCENT MUSIC ENTMT GROUP (TME) , added to UNITED RENTALS (URI) (+6354.15% shares), and trimmed DUTCH BROS INC (BROS) (-95.31% shares). View the full Q4 2025 allocation shift and trading report →

13F AUM
$1.1B
Equity Positions
77
Top-10 Concentration
61.2%
Largest Sector · 33.6%
Technology
Longest-Held Position · 13 qtrs
MSFT
Median Holding Period
2 Qtrs

Top 10 Holdings — Keystone — Q4 2025

Largest 13F positions disclosed by Keystone, 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 Keystone in Q4 2025 — ranked by portfolio weight; share count and market value sourced from SEC Form 13F-HR filings.
# Issuer Ticker Sector Weight Position Value Detail
1 ALPHABET INC GOOG Communication Services 13.53% $150.7M Position History All Holders
2 NVIDIA CORPORATION NVDA Technology 9.06% $100.9M Position History All Holders
3 SEA LTD., CLASS A, ADR SE Consumer Cyclical 7.52% $83.8M Position History All Holders
4 AMAZON COM INC NEW AMZN Consumer Cyclical 6.70% $74.6M Position History All Holders
5 VANECK ETF TRUST NEW GDX Unknown 5.16% $57.4M Position History All Holders
6 IQVIA HLDGS INC IQV Healthcare 4.98% $55.4M Position History All Holders
7 MICROSOFT CORP MSFT Technology 4.13% $46.0M Position History All Holders
8 LUMENTUM HLDGS INC LITE Technology 3.65% $40.6M Position History All Holders
9 COHERENT CORP COHR Technology 3.43% $38.2M Position History All Holders
10 WESTERN DIGITAL CORP WDC Technology 3.05% $34.0M Position History All Holders

View Keystone's Q4 2025 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 stock77 positions · click any tile for institutional holders
Allocation by sector10 sectors · same palette as the stock tiles

Quarterly shiftsQ4 2025 vs previous quarter

Top movers in Keystone'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
UNITED RENTALSURI+1.16%+6354.15%
FLOWSERVE CORPFLS+1.45%+6114.87%
ROBLOX CORPRBLX+0.09%+341.04%
IREN LIMITEDIREN+0.03%+225.61%
PONY AI INCPONY+0.30%+202.00%
Top sells
CompanyTickerΔ WeightΔ Shares
DUTCH BROS INCBROS-0.44%-95.31%
ATLASSIAN CORPORATIONTEAM-0.96%-88.58%
ATI INCATI-2.11%-87.21%
AEROVIRONMENT INCAVAV-0.25%-85.27%
RIOT PLATFORMS INCRIOT-0.70%-82.23%

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+$248.2M · +28.70% QoQ
Δ Shares heldNet -22.54% vs. prior quarter

Holding period analytics

Distribution of holding periods for all 254 stocks the fund has ever held (up to selected quarter):

Which Funds Hold a Similar Portfolio to Keystone?

Ranked by percentage of the peer fund's 13F equity portfolio that overlaps with Keystone's positions in Q4 2025.

Funds with the most portfolio overlap with Keystone in Q4 2025 — Ranked by overlap percentage
# Fund Shared Positions Overlap %
1 Washington University in St. Louis 13F 1 89.4%
2 CAS Investment Partners 13F 1 83.2%
3 Voyager Global Management 13F 5 64.9%
4 BlueSpruce 13F 4 60.9%
5 Greenoaks 13F 2 60.3%

How Has Keystone's AUM Changed Over Time?

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

Methodology & FAQ

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

A Form 13F-HR filed by Keystone 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 Keystone’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 Keystone's portfolio allocations?

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

When is Keystone'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 Keystone. 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 Keystone 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. Keystone 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.