How many shares of RARE does CITADEL ADVISORS LLC own?

As of 2026-Q1, CITADEL ADVISORS LLC holds 2.1M shares of RARE (ULTRAGENYX PHARMACEUTICAL IN).

What is CITADEL ADVISORS LLC's RARE position worth?

As of 2026-Q1, CITADEL ADVISORS LLC's RARE position is worth $44.3M.

In 2026-Q1, CITADEL ADVISORS LLC decreased their RARE position (-9.1% change in shares).

Based on available 13F filings, CITADEL ADVISORS LLC first reported a position in RARE in 2018-Q4. They have held the position across 30 quarters.

Position history for CITADEL ADVISORS LLC's holdings in ULTRAGENYX PHARMACEUTICAL IN

Current Value

$44.3M

Current Shares

2.1M

Total Value Change

+$43.9M

Total Shares Change

+2.1M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Decreased	2.1M	-9.1%	$44.3M	0.0%	$22.07	0
2025-Q4	Increased	2.3M	+602.9%	$53.5M	0.0%	$22.78	47
2025-Q3	Increased	330,953	+779.6%	$10M	0.0%	$30.36	45
2025-Q2	Decreased	37,627	-85.3%	$1.4M	0.0%	$36.52	0
2025-Q1	Decreased	256,549	-10.3%	$9.3M	0.0%	$37.82	0
2024-Q4	Increased	286,179	+496.8%	$12M	0.0%	$42.27	45
2024-Q3	Decreased	47,953	-72.4%	$2.7M	0.0%	$54.43	0
2024-Q2	Decreased	173,948	-40.7%	$7.1M	0.0%	$41.10	0
2024-Q1	Increased	293,305	+46.6%	$13.7M	0.0%	$46.69	38
2023-Q4	Increased	200,054	+142x	$9.6M	0.0%	$47.82	45
2023-Q3	Decreased	1,401	-99.5%	$49,946	0.0%	$35.65	0
2023-Q2	Decreased	276,683	-50.4%	$12.8M	0.0%	$46.65	0
2023-Q1	Increased	557,816	+153.6%	$22.4M	0.0%	$38.64	46
2022-Q4	Increased	219,976	+20.2%	$10.2M	0.0%	$46.33	33
2022-Q3	Decreased	183,006	-82.0%	$7.6M	0.0%	$40.55	0
2022-Q2	Decreased	1M	-22.6%	$60.7M	0.0%	$60.24	0
2022-Q1	Decreased	1.3M	-8.9%	$95.5M	0.0%	$71.36	0
2021-Q4	Decreased	1.4M	-2.7%	$121.4M	0.0%	$84.25	0
2021-Q3	Decreased	1.5M	-20.1%	$133.8M	0.0%	$86.12	0
2021-Q2	Increased	1.9M	+96.5%	$177M	0.0%	$96.29	49
2021-Q1	Increased	944,513	+86.5%	$107.5M	0.0%	$112.06	47
2020-Q4	Increased	506,510	+12.7%	$70.1M	0.0%	$144.37	33
2020-Q3	Decreased	449,387	-31.6%	$36.9M	0.0%	$85.10	0
2020-Q2	Decreased	657,220	-59.6%	$51.4M	0.0%	$73.66	0
2020-Q1	Increased	1.6M	+8.6%	$72.3M	0.0%	$44.32	32
2019-Q4	Increased	1.5M	+241.6%	$64M	0.0%	$42.69	48
2019-Q3	Decreased	438,746	-9.4%	$18.8M	0.0%	$42.50	0
2019-Q2	Decreased	484,066	-50.3%	$30.7M	0.0%	$63.50	0
2019-Q1	Increased	974,072	+9200.8%	$67.6M	0.0%	$69.36	48
2018-Q4	New	10,473	-	$456,000	0.0%	$41.87	33