DOSSIER · 13F-HR · Q1 2026

ORBIMED ADVISORS LLC

$5.0B in tracked AUM across 112 positions as of Q1 2026.

OA
CIK 0001055951 · last filed Mar 31, 2026
Total AUM
$5.0B
as of Q1 2026
Holdings
112
positions
Whale Score
66
66
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026
Comprehensive Analysis of Orbimed Advisors LLC SEC 13F Filing (Q3 2025)
1. Portfolio Overview

Orbimed Advisors LLC reported a significant contraction in its disclosed portfolio value for the quarter ended September 30, 2025. The total portfolio value decreased by 45.0%, dropping from $3.99 billion to $2.20 billion. This reduction is not solely attributable to market performance but is largely the result of a substantial shift in asset allocation, characterized by the exit of major larg...

2. Key Holdings

The portfolio composition reveals a distinct high-conviction approach, with the top ten holdings accounting for approximately 53% of the total portfolio value.

  • Top Position: Edgewise Therapeutics Inc is the dominant holding, comprising 11.46% ($251.71M) of the portfolio. This represents a massive, concentrated bet on a single clinical-stage biotechnology company.
  • Significant Weightings: Sinovac Biotech Ltd follows at 8.40% ($184.47M), a notable concentration in a vaccine/biotech name outside the typical US-centric large-cap focus.
  • Established Biotech: The fund maintains substantial positions in established commercial-stage biotech companies such as Alnylam Pharmaceuticals (ALNY) at 6.26% and argenx SE (ARGX) at 5.79%. These positions serve as anchors within the portfolio, offering a balance to the smaller, clinical-stage names.
  • High Beta Exposure: Positions like Upstream Bio Inc (4.88%), ARS Pharmaceuticals (3.79%), and Avidity Biosciences (3.25%) indicate a strong appetite for companies with binary event risk or high growth potential.
Analysis generated by 13F Insight from SEC Form 13F filing data · Q1 2026. Methodology

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
EWTX
EDGEWISE THERAPEUTICS INC
$489M15.5M9.7%
02
ELVN
ENLIVEN THERAPEUTICS INC
$312M8.0M6.2%
03
B5950S113
MDXHEALTH SA
$286M124.3M5.7%
04
LLY
ELI LILLY & CO
$218M237K4.3%
05
RCEL
AVITA MEDICAL INC
$197M82.0M3.9%
06
P8696W104
SINOVAC BIOTECH LTD
$184M2.7M3.7%
07
BSX
BOSTON SCIENTIFIC CORP
$149M2.4M3.0%
08
SION
SIONNA THERAPEUTICS INC
$142M3.5M2.8%
09
G0593M107
ASTRAZENECA PLC
$132M670K2.6%
10
MYGN
MYRIAD GENETICS INC
$123M125.0M2.4%

Filing history

2026Q1Mar 31
$5.0B 3.0%
112 positionsView →
2025Q4Dec 31
$4.9B 122.2%
106 positionsView →
2025Q3Sep 30
$2.2B 45.0%
70 positionsView →
2025Q2Jun 30
$4.0B 4.6%
101 positionsLocked
2025Q1Mar 31
$4.2B 13.7%
109 positionsLocked
2024Q4Dec 31
$4.8B 11.6%
117 positionsLocked
2024Q3Sep 30
$5.5B 8.9%
117 positionsLocked
2024Q2Jun 30
$5.0B 7.2%
113 positionsLocked
2024Q1Mar 31
$5.4B 9.1%
113 positionsLocked
2023Q4Dec 31
$5.0B 6.6%
109 positionsLocked
2023Q3Sep 30
$4.7B 14.5%
126 positionsLocked
2023Q2Jun 30
$5.5B 8.2%
125 positionsLocked
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