SBI Securities Co., Ltd. ARQQ — Arqit Quantum Inc

Ownership history in SBI Securities Co., Ltd.  ·  6 quarters on record

AI Ownership Summary

SBI Securities Co., Ltd. reported Arqit Quantum Inc (ARQQ) in 6 quarterly 13F filings from 2024 Q4 through 2026 Q1. Peak portfolio weight reached 0.04% in 2025 Q3. The latest visible filing shows ARQQ at 0.01% 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 ARQQ ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was SBI Securities Co., Ltd.'s position in Arqit Quantum 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

ARQQ was reported at 0.01% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.04% in 2025 Q3

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

Time in book
Holding Window
2024 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.

ARQQ stock page SBI Securities Co., Ltd. fund profile SBI Securities Co., Ltd. full holdings
How SBI Securities Co., Ltd. held ARQQ — position size vs. price
% of Fund (quarterly)    ARQQ 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 REDUCED — — — 27,109 -3,970 -12.8% 0.01% $359K 2026-04-28 $14.09
2025 Q4 REDUCED 22.8% -39.4% ✅ 31,079 -9,170 -22.8% 0.02% $680K 2026-02-03 $19.79
2025 Q3 ADDED — — — 40,249 +3,659 +10.0% 0.04% $1.6M 2025-11-05 $34.25
2025 Q2 ADDED — — — 36,590 +5,445 +17.5% 0.04% $1.4M 2025-08-08 $32.33
2025 Q1 ADDED — — — 31,145 +7,032 +29.2% 0.01% $432K 2025-05-02 $16.90
2024 Q4 INITIATED — — — 24,113 — — 0.03% $937K 2025-02-06 $20.11

🏢 Other funds also holding ARQQ

As of 2026 Q1 — sorted by position size

Kessler Investment Group, LLC 3Y 7Y 0.99% True Vision MN LLC 0.1% BANQUE PICTET & CIE SA 3Y 7Y 0.0% Leonteq Securities AG 0.0% IFP Advisors, Inc 3Y 7Y 0.0% West Financial Advisors, LLC 3Y 0.0% SIGNATUREFD, LLC 3Y 7Y 0.0% CoreCap Advisors, LLC 3Y 0.0% Vermillion Wealth Management, Inc. 0.0%

FAQ About SBI Securities Co., Ltd. and ARQQ

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

How long has SBI Securities Co., Ltd. reported owning ARQQ?

SBI Securities Co., Ltd. reported ARQQ across 6 quarterly 13F filings, from 2024 Q4 through 2026 Q1.

What was the largest reported ARQQ position in SBI Securities Co., Ltd.'s portfolio?

The largest reported portfolio weight for ARQQ was 0.04% in 2025 Q3.

What is the latest reported ARQQ position on this page?

The most recent filing on this page is 2026 Q1, when SBI Securities Co., Ltd. reported 27,109 shares, equal to 0.01% of portfolio, with an estimated market value of $359K.

What does the chart on this ARQQ ownership page compare?

The chart compares SBI Securities Co., Ltd.'s quarterly ARQQ 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 SBI Securities Co., Ltd. time their ARQQ position?

Based on 13F filing dates vs. subsequent ARQQ price moves, SBI Securities Co., Ltd. correctly timed 3 out of 5 reported position changes (60%). The annualised alpha on ARQQ relative to SPY over the holding period was -35.4%.

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