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Ikarian Capital, LLC

Position in RARE — Ultragenyx Pharmaceutical Inc.

CIK 1778253 DALLAS, TX

Position in RARE

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$10,109,862
+$9,818,429 QoQ
Shares Held
482,571
+3708.5% QoQ
Ownership
0.490%
of shares outstanding
% of Portfolio
1.41%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
12 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in RARE Over Time

Shares Held

Position Value (USD)

Derivatives in RARE

reported options exposure · as of Dec 31, 2025
CallValue
$5,750,000
CallShares
250,000
PutValue
$5,867,300
PutShares
255,100

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Mar 31, 2026

Ikarian Capital, LLC holds $657,306,791 across 105 Biotechnology names. RARE ranks #22 (1.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in RARE

Export CSV
19 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $10,109,862 482,571
2025-12-31 $5,867,300 255,100
2025-12-31 $5,750,000 250,000
2025-12-31 $291,433 12,671
2025-09-30 $2,785,408 92,600
2025-06-30 $20,474,316 563,100
2025-06-30 $10,908,000 300,000
2025-03-31 $3,621,000 100,000
2025-03-31 $4,095,351 113,100
2025-03-31 $7,857,171 216,989
2024-12-31 $7,530,067 178,989
2024-09-30 $9,943,450 179,000
2023-09-30 $6,236,789 174,945
2023-06-30 $5,612,083 121,658
2021-03-31 $2,095,024 18,400
2020-06-30 $180,922 2,313
2020-06-30 $5,749,170 73,500
2020-03-31 $4,443,000 100,000
2020-03-31 $633,216 14,252