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 		$99.1K Buy
+4,729
New +$106K ﹤0.01% 5105
2025
Q2 		– Sell
-23,991
Closed -$865K – 9552
2025
Q1 		$868K Buy
23,991
+18,062
+305% +$751K ﹤0.01% 2838
2024
Q4 		$249K Sell
5,929
-4,418
-43% -$219K ﹤0.01% 4278
2024
Q3 		$574K Buy
10,347
+5,512
+114% +$281K ﹤0.01% 3452
2024
Q2 		$198K Buy
4,835
+3,881
+407% +$166K ﹤0.01% 4660
2024
Q1 		$44K Buy
+954
New +$45K ﹤0.01% 6376
2022
Q1 		– Sell
-94
Closed -$6.54K – 11215
2021
Q4 		$7K Sell
94
-24
-20% -$1.95K ﹤0.01% 9332
2021
Q3 		$11K Hold
118
– – ﹤0.01% 8882
2021
Q2 		$11K Sell
118
-282
-71% -$29.4K ﹤0.01% 9048
2021
Q1 		$45K Buy
+400
New +$54.5K ﹤0.01% 6743
2020
Q3 		– Sell
-23,579
Closed -$1.95M – 8366
2020
Q2 		$1.84M Buy
23,579
+8,294
+54% +$549K ﹤0.01% 1576
2020
Q1 		$679K Buy
15,285
+2,513
+20% +$130K ﹤0.01% 2277
2019
Q4 		$545K Buy
12,772
+1,659
+15% +$68.4K ﹤0.01% 2660
2019
Q3 		$475K Buy
+11,113
New +$604K ﹤0.01% 2674
2019
Q2 		– Sell
-3,593
Closed -$229K – 7653
2019
Q1 		$249K Buy
+3,593
New +$205K ﹤0.01% 3377
2018
Q4 		– Sell
-831
Closed -$45.4K – 7654
2018
Q3 		$63K Buy
+831
New +$67.6K ﹤0.01% 4937
2018
Q2 		– Sell
-2,696
Closed -$174K – 7795
2018
Q1 		$137K Buy
+2,696
New +$136K 0.01% 1537
2017
Q3 		– Sell
-1,441
Closed -$85.4K – 6497
2017
Q2 		$89K Sell
1,441
-6,457
-82% -$389K ﹤0.01% 1854
2017
Q1 		$535K Buy
7,898
+700
+10% +$53.3K 0.02% 639
2016
Q4 		$506K Buy
7,198
+4,580
+175% +$325K 0.03% 539
2016
Q3 		$185K Buy
2,618
+1,451
+124% +$92.6K 0.01% 1092
2016
Q2 		$57K Buy
+1,167
New +$75.5K ﹤0.01% 1927

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. 296 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.
  • 296 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.