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Equibles

JANE STREET GROUP, LLC

Position in RARE — Ultragenyx Pharmaceutical Inc.

CIK 1595888 NEW YORK, NY
Back to RARE Full portfolio

Position in RARE

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$3,639,915
-$19,854,562 QoQ
Shares Held
173,743
-83.0% QoQ
Ownership
0.176%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2020
24 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 Mar 31, 2026
CallValue
$2,599,895
CallShares
124,100
PutValue
$1,611,055
PutShares
76,900

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

JANE STREET GROUP, LLC holds $1,253,826,569 across 316 Biotechnology names. RARE ranks #57 (0.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 BBIO
BridgeBio Pharma, Inc.
 1,757,672 $130,524,721
2 RPRX
Royalty Pharma plc
 2,400,382 $115,146,324
3 TGTX
Tg Therapeutics, Inc.
 2,041,669 $67,824,242
4 VRTX
Vertex Pharmaceuticals Inc / Ma
 122,946 $54,900,305
5 HALO
Halozyme Therapeutics, Inc.
 831,707 $53,753,223
6 EXEL
Exelixis, Inc.
 1,087,030 $46,622,715
7 JAZZ
Jazz Pharmaceuticals plc
 223,615 $42,274,415
8 BNTX
BioNTech SE
 336,757 $29,930,962

All Filings in RARE

Export CSV
49 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $3,639,915 173,743
2026-03-31 $2,599,895 124,100
2026-03-31 $1,611,055 76,900
2025-12-31 $1,906,700 82,900
2025-12-31 $23,494,477 1,021,499
2025-12-31 $1,782,500 77,500
2025-09-30 $3,332,864 110,800
2025-09-30 $10,653,372 354,168
2025-09-30 $3,847,232 127,900
2025-06-30 $4,062,356 111,726
2025-06-30 $12,202,416 335,600
2025-06-30 $4,268,664 117,400
2025-03-31 $3,360,288 92,800
2025-03-31 $5,998,077 165,647
2025-03-31 $6,416,412 177,200
2024-12-31 $4,661,356 110,800
2024-12-31 $803,537 19,100
2024-12-31 $3,429,335 81,515
2024-09-30 $6,549,345 117,900
2024-09-30 $1,477,630 26,600
2024-09-30 $7,301,545 131,441
2024-06-30 $7,606,005 185,061
2024-03-31 $3,055,298 65,438
2023-12-31 $5,772,590 120,715
2023-09-30 $1,057,022 29,650
2023-06-30 $3,580,933 77,627
2023-03-31 $1,153,797 28,773
2022-12-31 $1,429,881 30,863
2022-09-30 $1,449,349 35,000
2022-06-30 $664,552 11,139
2022-03-31 $1,466,924 20,200
2022-03-31 $1,394,304 19,200
2022-03-31 $209,943 2,891
2021-12-31 $4,036,320 48,000
2021-12-31 $2,355,192 28,008
2021-09-30 $3,941,303 43,700
2021-09-30 $1,488,135 16,500
2021-09-30 $2,832,055 31,401
2021-06-30 $1,802,115 18,900
2021-06-30 $6,371,572 66,823
2021-03-31 $634,541 5,573
2021-03-31 $1,719,286 15,100
2020-12-31 $4,618,578 33,364
2020-12-31 $2,671,699 19,300
2020-09-30 $1,717,524 20,897
2020-09-30 $1,660,238 20,200
2020-06-30 $1,743,366 22,288
2020-06-30 $406,744 5,200
2020-06-30 $962,106 12,300

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