XTX Topco Ltd BOLD — BOUNDLESS BIO INC

Ownership history in XTX Topco Ltd  ·  5 quarters on record

AI Ownership Summary

XTX Topco Ltd reported BOUNDLESS BIO INC (BOLD) in 5 quarterly 13F filings from 2025 Q1 through 2026 Q1. The latest visible filing shows BOLD 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 BOLD 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 BOUNDLESS BIO 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

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

High-water mark
Peak Conviction
0.0% in 2025 Q1

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

Time in book
Holding Window
2025 Q1 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.

BOLD stock page XTX Topco Ltd fund profile XTX Topco Ltd full holdings
How XTX Topco Ltd held BOLD — position size vs. price
% of Fund (quarterly)    BOLD price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 5 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 34,671 -4,906 -12.4% 0.00% $38K 2026-05-15 $1.49
2025 Q4 ADDED — — — 39,577 +10,496 +36.1% 0.00% $47K 2026-02-17 $1.15
2025 Q3 REDUCED 27.4% -2.4% ✅ 29,081 -10,983 -27.4% 0.00% $36K 2025-11-14 $1.24
2025 Q2 ADDED — — — 40,064 +14,147 +54.6% 0.00% $40K 2025-08-12 $1.12
2025 Q1 INITIATED — — — 25,917 — — 0.00% $39K 2025-05-08 $1.50

🏢 Other funds also holding BOLD

As of 2026 Q1 — sorted by position size

SECTORAL ASSET MANAGEMENT INC 3Y 7Y 0.62% Stonepine Capital Management, LLC 3Y 7Y 0.26% Sio Capital Management, LLC 3Y 7Y 0.03% RBF Capital, LLC 3Y 7Y 0.01% GSA CAPITAL PARTNERS LLP 3Y 7Y 0.01% LANDSCAPE CAPITAL MANAGEMENT, L.L.C. 3Y 7Y 0.01% BRIDGEWAY CAPITAL MANAGEMENT, LLC 3Y 7Y 0.0% Alyeska Investment Group, L.P. 3Y 7Y 0.0% RENAISSANCE TECHNOLOGIES LLC 3Y 7Y 0.0% Ensign Peak Advisors, Inc 3Y 0.0%

FAQ About XTX Topco Ltd and BOLD

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 BOLD?

XTX Topco Ltd reported BOLD across 5 quarterly 13F filings, from 2025 Q1 through 2026 Q1.

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

The largest reported portfolio weight for BOLD was 0.00% in 2025 Q1.

What is the latest reported BOLD position on this page?

The most recent filing on this page is 2026 Q1, when XTX Topco Ltd reported 34,671 shares, equal to 0.00% of portfolio, with an estimated market value of $38K.

What does the chart on this BOLD ownership page compare?

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

Based on 13F filing dates vs. subsequent BOLD price moves, XTX Topco Ltd correctly timed 3 out of 4 reported position changes (75%). The annualised alpha on BOLD relative to SPY over the holding period was -24.5%.

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