SBI Securities Co., Ltd. CTRM — Castor Maritime Inc

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

AI Ownership Summary

SBI Securities Co., Ltd. reported Castor Maritime Inc (CTRM) in 6 quarterly 13F filings from 2024 Q4 through 2026 Q1. The latest visible filing shows CTRM 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 CTRM 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 Castor Maritime 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

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

High-water mark
Peak Conviction
0.0% in 2024 Q4

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.

CTRM stock page SBI Securities Co., Ltd. fund profile SBI Securities Co., Ltd. full holdings
How SBI Securities Co., Ltd. held CTRM — position size vs. price
% of Fund (quarterly)    CTRM 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 — — — 101 -15 -12.9% 0.00% $187 2026-04-28 $2.11
2025 Q4 UNCHANGED — — — 116 — 0% 0.00% $240 2026-02-03 $2.21
2025 Q3 REDUCED — — — 116 -1 -0.9% 0.00% $241 2025-11-05 $1.98
2025 Q2 UNCHANGED — — — 117 — 0% 0.00% $250 2025-08-08 $2.12
2025 Q1 ADDED — — — 117 +4 +3.5% 0.00% $267 2025-05-02 $2.20
2024 Q4 INITIATED — — — 113 — — 0.00% $311 2025-02-06 $2.68

🏢 Other funds also holding CTRM

As of 2026 Q1 — sorted by position size

TOWERVIEW LLC 3Y 7Y 0.29% WOLFF WIESE MAGANA LLC 3Y 0.0% GILL CAPITAL PARTNERS, LLC 3Y 0.0% GROUP ONE TRADING LLC 3Y 7Y 0.0% Caitong International Asset Management Co., Ltd 0.0% UBS Group AG 3Y 7Y 0.0% Parallel Advisors, LLC 3Y 7Y 0.0% Farther Finance Advisors, LLC 0.0% Russell Investments Group, Ltd. 3Y 7Y 0.0%

FAQ About SBI Securities Co., Ltd. and CTRM

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 CTRM?

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

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

The largest reported portfolio weight for CTRM was 0.00% in 2024 Q4.

What is the latest reported CTRM position on this page?

The most recent filing on this page is 2026 Q1, when SBI Securities Co., Ltd. reported 101 shares, equal to 0.00% of portfolio, with an estimated market value of $187.

What does the chart on this CTRM ownership page compare?

The chart compares SBI Securities Co., Ltd.'s quarterly CTRM 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 CTRM position?

Based on 13F filing dates vs. subsequent CTRM price moves, SBI Securities Co., Ltd. correctly timed 0 out of 3 reported position changes (0%). The annualised alpha on CTRM relative to SPY over the holding period was -28.7%.

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