Simplex Trading
RARE icon

Simplex Trading’s Ultragenyx Pharmaceutical RARE Stock Holding History

Simplex Trading’s Portfolio RARE Stock Details RARE Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$325K Buy
+15,500
New +$349K ﹤0.01% 3735
2025
Q4 		– Sell
-64,500
Closed -$1.94M – 9799
2025
Q3 		$1.94M Sell
64,500
-48,400
-43% -$1.45M ﹤0.01% 2354
2025
Q2 		$4.11M Buy
112,900
+66,700
+144% +$2.4M ﹤0.01% 1510
2025
Q1 		$1.67M Buy
46,200
+38,100
+470% +$1.59M ﹤0.01% 2208
2024
Q4 		$340K Buy
8,100
+1,100
+16% +$54.6K ﹤0.01% 3930
2024
Q3 		$388K Sell
7,000
-7,500
-52% -$382K ﹤0.01% 3863
2024
Q2 		$595K Sell
14,500
-12,900
-47% -$551K ﹤0.01% 3471
2024
Q1 		$1.28M Buy
27,400
+4,600
+20% +$217K ﹤0.01% 2864
2023
Q4 		$1.09M Sell
22,800
-23,900
-51% -$927K ﹤0.01% 2934
2023
Q3 		$1.66M Buy
46,700
+7,600
+19% +$301K ﹤0.01% 2238
2023
Q2 		$1.8M Buy
39,100
+18,400
+89% +$853K ﹤0.01% 2046
2023
Q1 		$830K Buy
20,700
+13,500
+188% +$579K ﹤0.01% 2757
2022
Q4 		$333K Sell
7,200
-5,100
-41% -$201K ﹤0.01% 3618
2022
Q3 		$509K Buy
12,300
+12,000
+4,000% +$617K ﹤0.01% 3452
2022
Q2 		$17K Buy
300
+100
+50% +$6.15K ﹤0.01% 7779
2022
Q1 		$14K Buy
+200
New +$13.9K ﹤0.01% 8604
2021
Q4 		– Sell
-600
Closed -$56K – 11261
2021
Q3 		$56K Hold
600
– – ﹤0.01% 7388
2021
Q2 		$57K Buy
600
+497
+483% +$51.8K ﹤0.01% 7488
2021
Q1 		$1.17M Sell
103
-5
-5% -$681 ﹤0.01% 2219
2020
Q4 		$1.5M Buy
108
+106
+5,300% +$12.6K ﹤0.01% 2077
2020
Q3 		$16K Sell
2
-58
-97% -$4.81K ﹤0.01% 6511
2020
Q2 		$469K Buy
60
+27
+82% +$1.79K ﹤0.01% 2990
2020
Q1 		$146K Sell
33
-21
-39% -$1.09K ﹤0.01% 3953
2019
Q4 		$230K Buy
54
+49
+980% +$2.02K ﹤0.01% 3601
2019
Q3 		$21K Sell
5
-4
-44% -$217 ﹤0.01% 5782
2019
Q2 		$57K Buy
9
+2
+29% +$127 ﹤0.01% 4742
2019
Q1 		$48K Buy
+7
New +$400 ﹤0.01% 5040
2018
Q4 		– Sell
-15
Closed -$114K – 7653
2018
Q3 		$114K Hold
15
– – ﹤0.01% 4305
2018
Q2 		$115K Buy
15
+3
+25% +$194 ﹤0.01% 4126
2018
Q1 		$15K Sell
12
-4
-25% -$201 ﹤0.01% 3641
2017
Q4 		$2K Sell
16
-129
-89% -$6.33K ﹤0.01% 5244
2017
Q3 		$16K Buy
145
+50
+53% +$2.96K ﹤0.01% 3372
2017
Q2 		$17K Sell
95
-3
-3% -$181 ﹤0.01% 3469
2017
Q1 		$16K Buy
98
+44
+81% +$3.35K ﹤0.01% 3497
2016
Q4 		$18K Buy
54
+46
+575% +$3.26K ﹤0.01% 3142
2016
Q3 		$7K Sell
8
-37
-82% -$2.36K ﹤0.01% 3972
2016
Q2 		$1K Buy
45
+16
+55% +$1.03K ﹤0.01% 5413
2016
Q1 		$1K Buy
29
+4
+16% +$262 ﹤0.01% 5213
2015
Q4 		$18K Sell
25
-14
-36% -$1.4K ﹤0.01% 2793
2015
Q3 		$18K Sell
39
-6
-13% -$687 ﹤0.01% 2912
2015
Q2 		$89K Buy
45
+39
+650% +$3.03K 0.01% 1282
2015
Q1 		$3K Buy
+6
New +$333 ﹤0.01% 3892

Other funds holding RARE

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Sands Capital Management
Sands Capital Management Arlington, Virginia $25.5B AUM 26.46% 1-Year Est. Return
SI
Sofinnova Investments Menlo Park, California $2.63B AUM 117.41% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
BG
Bellevue Group Kuesnacht, Switzerland $4.2B AUM 54.85% 1-Year Est. Return

Simplex Trading's RARE Position: Q1 2026 in Review

Simplex Trading opened a new position in Ultragenyx Pharmaceutical (RARE) in Q1 2026: 4,729 shares worth $99.1K. The stake represents ﹤0.01% of the portfolio and ranks #5105 among its holdings. This is a return to the name: Simplex Trading previously reported a position in RARE as recently as Q1 2025.

Simplex Trading first reported a position in RARE in Q2 2016 and has held it in 22 quarters since. The position peaked at $1.84M in Q2 2020. 295 funds tracked by Wall St. Rank hold RARE as of Q1 2026.

  • Simplex Trading held 4,729 shares of Ultragenyx Pharmaceutical worth $99.1K as of Q1 2026.
  • Ultragenyx Pharmaceutical was a new Simplex Trading position in Q1 2026.
  • Ultragenyx Pharmaceutical made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #5105 holding.
  • Simplex Trading first reported a position in Ultragenyx Pharmaceutical in Q2 2016 and has held it in 22 quarters since.
  • Simplex Trading's Ultragenyx Pharmaceutical position peaked at $1.84M in Q2 2020.
  • 295 funds tracked by Wall St. Rank held Ultragenyx Pharmaceutical as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.