XTX Topco Ltd ECX — ECARX HOLDINGS INC

Ownership history in XTX Topco Ltd  ·  6 quarters on record

AI Ownership Summary

XTX Topco Ltd reported ECARX HOLDINGS INC (ECX) in 6 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 0.02% in 2023 Q4. The latest visible filing shows ECX at 0.00% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this ECX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was XTX Topco Ltd's position in ECARX HOLDINGS INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

ECX was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.02% in 2023 Q4

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

ECX stock page XTX Topco Ltd fund profile XTX Topco Ltd full holdings
How XTX Topco Ltd held ECX — position size vs. price
% of Fund (quarterly)    ECX price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 6 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 ADDED — — — 214,568 +180,209 +524.5% 0.00% $210K 2026-05-15 $1.09
2025 Q4 REDUCED 77.3% -43.0% ✅ 34,359 -117,297 -77.3% 0.00% $59K 2026-02-17 $1.67
2025 Q3 ADDED — — — 151,656 +46,314 +44.0% 0.02% $305K 2025-11-14 $2.13
2025 Q1 ADDED — — — 105,342 +80,833 +329.8% 0.01% $133K 2025-05-08 $1.40
2024 Q4 REDUCED 22.7% -40.3% ✅ 24,509 -7,205 -22.7% 0.00% $52K 2025-02-13 $2.06
2023 Q4 INITIATED — — — 31,714 — — 0.02% $100K 2024-02-13 $2.77

🏢 Other funds also holding ECX

As of 2026 Q1 — sorted by position size

Themes Management Co LLC 0.06% Green Alpha Advisors, LLC 3Y 0.05% Concentric Capital Strategies, LP 3Y 0.01% State of Wyoming 3Y 0.01% TUDOR INVESTMENT CORP ET AL 3Y 7Y 0.0% RENAISSANCE TECHNOLOGIES LLC 3Y 7Y 0.0% Susquehanna Portfolio Strategies, LLC 0.0% Quantbot Technologies LP 3Y 7Y 0.0% AXQ CAPITAL, LP 3Y 0.0% Centiva Capital, LP 3Y 7Y 0.0%

FAQ About XTX Topco Ltd and ECX

These are the practical questions this page is built to answer before you even open the full history table.

How long has XTX Topco Ltd reported owning ECX?

XTX Topco Ltd reported ECX across 6 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported ECX position in XTX Topco Ltd's portfolio?

The largest reported portfolio weight for ECX was 0.02% in 2023 Q4.

What is the latest reported ECX position on this page?

The most recent filing on this page is 2026 Q1, when XTX Topco Ltd reported 214,568 shares, equal to 0.00% of portfolio, with an estimated market value of $210K.

What does the chart on this ECX ownership page compare?

The chart compares XTX Topco Ltd's quarterly ECX portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did XTX Topco Ltd time their ECX position?

Based on 13F filing dates vs. subsequent ECX price moves, XTX Topco Ltd correctly timed 3 out of 5 reported position changes (60%). The annualised alpha on ECX relative to SPY over the holding period was -49.1%.

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