GSA CAPITAL PARTNERS LLP MBIO β€” MUSTANG BIO INC

Ownership history in GSA CAPITAL PARTNERS LLP  Β·  13 quarters on record

AI Ownership Summary

GSA CAPITAL PARTNERS LLP reported MUSTANG BIO INC (MBIO) in 13 quarterly 13F filings from 2025 Q4 through 2025 Q4. The latest visible filing shows MBIO 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 MBIO ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was GSA CAPITAL PARTNERS LLP's position in MUSTANG 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
2025 Q4

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

High-water mark
Peak Conviction
0.0% in 2025 Q4

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

Time in book
Holding Window
2025 Q4 to 2025 Q4

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.

MBIO stock page GSA CAPITAL PARTNERS LLP fund profile GSA CAPITAL PARTNERS LLP full holdings
How GSA CAPITAL PARTNERS LLP held MBIO β€” position size vs. price
% of Fund (quarterly)    MBIO price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
πŸ“‹ Quarterly Holdings History 1 quarter  β–Ύ
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED 96.8% -25.5% βœ… 12,834 -388,214 -96.8% 0.00% $13K 2026-02-14 (Est.) $0.87
12 older quarters hidden  β€”  Sign in free or upgrade to Premium to see full history

🏒 Other funds also holding MBIO

As of 2026 Q1 β€” sorted by position size

Kestra Advisory Services, LLC 3Y 0.0% SBI Securities Co., Ltd. 0.0% NBC SECURITIES, INC. 0.0%

FAQ About GSA CAPITAL PARTNERS LLP and MBIO

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

How long has GSA CAPITAL PARTNERS LLP reported owning MBIO?

GSA CAPITAL PARTNERS LLP reported MBIO across 1 quarterly 13F filings, from 2025 Q4 through 2025 Q4.

What was the largest reported MBIO position in GSA CAPITAL PARTNERS LLP's portfolio?

The largest reported portfolio weight for MBIO was 0.00% in 2025 Q4.

What is the latest reported MBIO position on this page?

The most recent filing on this page is 2025 Q4, when GSA CAPITAL PARTNERS LLP reported 12,834 shares, equal to 0.00% of portfolio, with an estimated market value of $13K.

What does the chart on this MBIO ownership page compare?

The chart compares GSA CAPITAL PARTNERS LLP's quarterly MBIO 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 GSA CAPITAL PARTNERS LLP time their MBIO position?

Based on 13F filing dates vs. subsequent MBIO price moves, GSA CAPITAL PARTNERS LLP correctly timed 5 out of 12 reported position changes (42%). The annualised alpha on MBIO relative to SPY over the holding period was -51.4%.

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