Samsara BioCapital, LLC ABVX — ABIVAX SA

Ownership history in Samsara BioCapital, LLC  ·  9 quarters on record

AI Ownership Summary

Samsara BioCapital, LLC reported ABIVAX SA (ABVX) in 9 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 2.35% in 2024 Q2. The latest visible filing shows ABVX at 0.61% 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 ABVX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Samsara BioCapital, LLC's position in ABIVAX SA, 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

ABVX was reported at 0.61% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
2.35% in 2024 Q2

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.

ABVX stock page Samsara BioCapital, LLC fund profile Samsara BioCapital, LLC full holdings
How Samsara BioCapital, LLC held ABVX — position size vs. price
% of Fund (quarterly)    ABVX 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 — — — 56,581 -18,861 -25.0% 0.61% $6.3M 2026-05-15 $114.53
2025 Q4 UNCHANGED — — — 75,442 — 0% 1.05% $10.2M 2026-02-17 $125.63
2025 Q3 REDUCED 82.2% +65.4% ❌ 75,442 -349,558 -82.2% 0.84% $6.4M 2025-11-14 $110.39
2025 Q1 REDUCED 50.0% +22.4% ❌ 425,000 -425,000 -50.0% 0.47% $2.7M 2025-05-15 $5.99
2024 Q4 UNCHANGED — — — 850,000 — 0% 0.85% $6.2M 2025-02-14 $7.40
2024 Q3 UNCHANGED — — — 850,000 — 0% 1.88% $9.8M 2024-11-14 $9.96
2024 Q2 UNCHANGED — — — 850,000 — 0% 2.35% $11.2M 2024-08-14 $10.99
2024 Q1 UNCHANGED — — — 850,000 — 0% 1.88% $12.2M 2024-05-15 $13.95
2023 Q4 INITIATED — — — 850,000 — — 1.41% $9.1M 2024-02-14 $12.02

🏢 Other funds also holding ABVX

As of 2026 Q1 — sorted by position size

TCG Crossover Management, LLC 3Y 20.65% Artia Global Partners LP 3Y 13.39% Saturn V Capital Management LP 3Y 10.94% Caligan Partners LP 3Y 10.83% Brummer Multi-Strategy AB 10.4% Darwin Global Management, Ltd. 3Y 9.34% ADAR1 Capital Management, LLC 9.14% Kite Lake Capital Management (UK) LLP 3Y 8.93% Octagon Capital Advisors LP 3Y 8.34% Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. 7.23%

FAQ About Samsara BioCapital, LLC and ABVX

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

How long has Samsara BioCapital, LLC reported owning ABVX?

Samsara BioCapital, LLC reported ABVX across 9 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported ABVX position in Samsara BioCapital, LLC's portfolio?

The largest reported portfolio weight for ABVX was 2.35% in 2024 Q2.

What is the latest reported ABVX position on this page?

The most recent filing on this page is 2026 Q1, when Samsara BioCapital, LLC reported 56,581 shares, equal to 0.61% of portfolio, with an estimated market value of $6.3M.

What does the chart on this ABVX ownership page compare?

The chart compares Samsara BioCapital, LLC's quarterly ABVX 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 Samsara BioCapital, LLC time their ABVX position?

Based on 13F filing dates vs. subsequent ABVX price moves, Samsara BioCapital, LLC correctly timed 1 out of 3 reported position changes (33%). The annualised alpha on ABVX relative to SPY over the holding period was +126.1%.

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