XTX Topco Ltd ATER — ATERIAN INC

Ownership history in XTX Topco Ltd  ·  15 quarters on record

AI Ownership Summary

XTX Topco Ltd reported ATERIAN INC (ATER) in 15 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 0.01% in 2024 Q2. The latest visible filing shows ATER 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. Older history is available after unlock; the visible window still shows the most recent pattern.

What this ATER 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 ATERIAN 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

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

High-water mark
Peak Conviction
0.01% in 2024 Q2

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.

ATER stock page XTX Topco Ltd fund profile XTX Topco Ltd full holdings
How XTX Topco Ltd held ATER — position size vs. price
% of Fund (quarterly)    ATER price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 7 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 ADDED — — — 57,918 +31,783 +121.6% 0.00% $33K 2026-05-15 $1.09
2025 Q4 ADDED — — — 26,135 +1,197 +4.8% 0.00% $18K 2026-02-17 $0.58
2025 Q3 REDUCED 24.6% -37.1% ✅ 24,938 -8,154 -24.6% 0.00% $26K 2025-11-14 $0.84
2025 Q2 ADDED — — — 33,092 +19,705 +147.2% 0.00% $55K 2025-08-12 $1.30
2024 Q3 REDUCED 36.2% -11.5% ✅ 13,387 -7,587 -36.2% 0.00% $39K 2024-11-14 $2.76
2024 Q2 REDUCED 63.9% +2.5% ❌ 20,974 -37,048 -63.9% 0.01% $59K 2024-08-12 $2.99
2023 Q4 REDUCED 21.6% -40.1% ✅ 58,022 -15,943 -21.6% 0.00% $20K 2024-02-13 $4.68
8 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding ATER

As of 2026 Q1 — sorted by position size

Virtu Financial LLC 3Y 7Y 0.0% RENAISSANCE TECHNOLOGIES LLC 3Y 7Y 0.0% Tower Research Capital LLC (TRC) 3Y 7Y 0.0% Apollo Management Holdings, L.P. 3Y 7Y 0.0% STANCE CAPITAL LLC 0.0% SBI Securities Co., Ltd. 0.0% GEODE CAPITAL MANAGEMENT, LLC 3Y 7Y 0.0% VANGUARD FIDUCIARY TRUST CO 0.0% PROATHLETE WEALTH MANAGEMENT LLC 0.0% SUSQUEHANNA INTERNATIONAL GROUP, LLP 3Y 7Y 0.0%

FAQ About XTX Topco Ltd and ATER

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 ATER?

XTX Topco Ltd reported ATER across 7 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

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

The largest reported portfolio weight for ATER was 0.01% in 2024 Q2.

What is the latest reported ATER position on this page?

The most recent filing on this page is 2026 Q1, when XTX Topco Ltd reported 57,918 shares, equal to 0.00% of portfolio, with an estimated market value of $33K.

What does the chart on this ATER ownership page compare?

The chart compares XTX Topco Ltd's quarterly ATER 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 ATER position?

Based on 13F filing dates vs. subsequent ATER price moves, XTX Topco Ltd correctly timed 8 out of 14 reported position changes (57%). The annualised alpha on ATER relative to SPY over the holding period was -65.0%.

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