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 		$197K Buy
+9,400
New +$212K ﹤0.01% 4317
2025
Q4 		– Sell
-23,400
Closed -$703K – 9800
2025
Q3 		$703K Sell
23,400
-104,100
-82% -$3.12M ﹤0.01% 3424
2025
Q2 		$4.63M Buy
127,500
+87,500
+219% +$3.15M ﹤0.01% 1410
2025
Q1 		$1.45M Buy
40,000
+26,300
+192% +$1.09M ﹤0.01% 2349
2024
Q4 		$576K Buy
13,700
+3,700
+37% +$184K ﹤0.01% 3376
2024
Q3 		$555K Buy
10,000
+1,100
+12% +$56K ﹤0.01% 3491
2024
Q2 		$365K Buy
8,900
+4,400
+98% +$188K ﹤0.01% 4006
2024
Q1 		$210K Sell
4,500
-200
-4% -$9.43K ﹤0.01% 4796
2023
Q4 		$224K Sell
4,700
-5,600
-54% -$217K ﹤0.01% 4560
2023
Q3 		$367K Buy
10,300
+6,600
+178% +$261K ﹤0.01% 3721
2023
Q2 		$170K Buy
3,700
+500
+16% +$23.2K ﹤0.01% 4485
2023
Q1 		$128K Buy
3,200
+2,100
+191% +$90.1K ﹤0.01% 4877
2022
Q4 		$50K Sell
1,100
-6,900
-86% -$271K ﹤0.01% 5905
2022
Q3 		$331K Buy
8,000
+7,700
+2,567% +$396K ﹤0.01% 3954
2022
Q2 		$17K Sell
300
-2,000
-87% -$123K ﹤0.01% 7780
2022
Q1 		$167K Buy
2,300
+1,600
+229% +$111K ﹤0.01% 5417
2021
Q4 		$58K Buy
+700
New +$57K ﹤0.01% 7065
2021
Q2 		– Sell
-1
Closed -$11K – 10592
2021
Q1 		$11K Buy
+1
New +$136 ﹤0.01% 7847
2020
Q4 		– Sell
-1
Closed -$8K – 8921
2020
Q3 		$8K Sell
1
-212
-100% -$17.6K ﹤0.01% 6904
2020
Q2 		$1.67M Buy
213
+140
+192% +$9.27K ﹤0.01% 1657
2020
Q1 		$324K Sell
73
-346
-83% -$18K ﹤0.01% 3066
2019
Q4 		$1.79M Buy
419
+204
+95% +$8.42K ﹤0.01% 1577
2019
Q3 		$919K Buy
215
+201
+1,436% +$10.9K ﹤0.01% 2012
2019
Q2 		$88K Hold
14
– – ﹤0.01% 4321
2019
Q1 		$97K Sell
14
-47
-77% -$2.69K ﹤0.01% 4356
2018
Q4 		$265K Buy
61
+60
+6,000% +$3.28K ﹤0.01% 2856
2018
Q3 		$7K Sell
1
-6
-86% -$488 ﹤0.01% 6614
2018
Q2 		$53K Sell
7
-2
-22% -$129 ﹤0.01% 4985
2018
Q1 		$4K Buy
9
+8
+800% +$403 ﹤0.01% 4828
2017
Q4 		$1K Buy
+1
New +$49 ﹤0.01% 5604
2017
Q3 		– Sell
-24
Closed -$10K – 6498
2017
Q2 		$10K Sell
24
-299
-93% -$18K ﹤0.01% 3987
2017
Q1 		$96K Buy
323
+43
+15% +$3.28K ﹤0.01% 1790
2016
Q4 		$113K Buy
280
+275
+5,500% +$19.5K 0.01% 1438
2016
Q3 		$3K Sell
5
-23
-82% -$1.47K ﹤0.01% 4726
2016
Q2 		$21K Buy
28
+14
+100% +$906 ﹤0.01% 2851
2016
Q1 		$11K Sell
14
-13
-48% -$851 ﹤0.01% 3388
2015
Q4 		$3K Buy
27
+14
+108% +$1.4K ﹤0.01% 4283
2015
Q3 		$13K Buy
+13
New +$1.49K ﹤0.01% 3206

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.