ACADIAN ASSET MANAGEMENT LLC FBIO — FORTRESS BIOTECH INC

Ownership history in ACADIAN ASSET MANAGEMENT LLC  ·  9 quarters on record

AI Ownership Summary

ACADIAN ASSET MANAGEMENT LLC reported FORTRESS BIOTECH INC (FBIO) in 9 quarterly 13F filings from 2023 Q4 through 2026 Q1. The latest visible filing shows FBIO 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 FBIO ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was ACADIAN ASSET MANAGEMENT LLC's position in FORTRESS BIOTECH 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

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

High-water mark
Peak Conviction
0.0% in 2024 Q3

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.

FBIO stock page ACADIAN ASSET MANAGEMENT LLC fund profile ACADIAN ASSET MANAGEMENT LLC full holdings
How ACADIAN ASSET MANAGEMENT LLC held FBIO — position size vs. price
% of Fund (quarterly)    FBIO price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 40,450 -2,659 -6.2% 0.00% $112 2026-05-13 $2.23
2025 Q3 ADDED — — — 43,109 +24,553 +132.3% 0.00% $158K 2025-11-14 (Est.) $2.62
2025 Q2 REDUCED 79.5% +109.7% ❌ 18,556 -71,950 -79.5% 0.00% $34K 2025-08-14 (Est.) $1.96
2025 Q1 REDUCED 51.2% +19.2% ❌ 90,506 -94,971 -51.2% 0.00% $141K 2025-05-21 $1.70
2024 Q4 REDUCED 61.6% -23.1% ✅ 185,477 -297,118 -61.6% 0.00% $375K 2025-02-11 $1.71
2024 Q3 ADDED — — — 482,595 +205,087 +73.9% 0.00% $696K 2024-11-12 $1.70
2024 Q2 REDUCED — — — 277,508 -14,550 -5.0% 0.00% $473K 2024-08-06 $1.76
2024 Q1 ADDED — — — 292,058 +161,870 +124.3% 0.00% $582K 2024-05-10 $1.67
2023 Q4 INITIATED — — — 130,188 — — 0.00% $390K 2024-02-13 $1.77

🏢 Other funds also holding FBIO

As of 2026 Q1 — sorted by position size

Opaleye Management Inc. 3Y 7Y 0.38% SHIKIAR ASSET MANAGEMENT INC 3Y 7Y 0.25% GSA CAPITAL PARTNERS LLP 3Y 7Y 0.04% 180 WEALTH ADVISORS, LLC 3Y 7Y 0.02% BRIDGEWAY CAPITAL MANAGEMENT, LLC 3Y 7Y 0.01% TWO SIGMA SECURITIES, LLC 3Y 7Y 0.01% Weaver Consulting Group 3Y 0.01% Abacus Planning Group, Inc. 3Y 7Y 0.01% PFG Investments, LLC 0.0% MTM Investment Management, LLC 3Y 0.0%

FAQ About ACADIAN ASSET MANAGEMENT LLC and FBIO

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

How long has ACADIAN ASSET MANAGEMENT LLC reported owning FBIO?

ACADIAN ASSET MANAGEMENT LLC reported FBIO across 9 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported FBIO position in ACADIAN ASSET MANAGEMENT LLC's portfolio?

The largest reported portfolio weight for FBIO was 0.00% in 2024 Q3.

What is the latest reported FBIO position on this page?

The most recent filing on this page is 2026 Q1, when ACADIAN ASSET MANAGEMENT LLC reported 40,450 shares, equal to 0.00% of portfolio, with an estimated market value of $112.

What does the chart on this FBIO ownership page compare?

The chart compares ACADIAN ASSET MANAGEMENT LLC's quarterly FBIO 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 ACADIAN ASSET MANAGEMENT LLC time their FBIO position?

Based on 13F filing dates vs. subsequent FBIO price moves, ACADIAN ASSET MANAGEMENT LLC correctly timed 4 out of 8 reported position changes (50%). The annualised alpha on FBIO relative to SPY over the holding period was -8.7%.

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