Alyeska Investment Group
RARE icon

Alyeska Investment Group’s Ultragenyx Pharmaceutical RARE Stock Holding History

Alyeska Investment Group’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
2025
Q4 		– Sell
-531,996
Closed -$16M – 708
2025
Q3 		$16M Sell
531,996
-897,441
-63% -$26.9M 0.05% 312
2025
Q2 		$52M Sell
1,429,437
-65,914
-4% -$2.38M 0.18% 152
2025
Q1 		$54.1M Buy
1,495,351
+55,611
+4% +$2.31M 0.22% 137
2024
Q4 		$60.6M Buy
1,439,740
+269,733
+23% +$13.4M 0.23% 111
2024
Q3 		$65M Buy
1,170,007
+1,100,007
+1,571% +$56M 0.33% 104
2024
Q2 		$2.88M Buy
+70,000
New +$2.99M 0.02% 384

Other funds holding RARE

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Sands Capital Management
Sands Capital Management Arlington, Virginia $26.9B AUM 34.44% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

Alyeska Investment Group's RARE Position: Q4 2025 in Review

Alyeska Investment Group sold out of Ultragenyx Pharmaceutical (RARE) in Q4 2025, closing a stake of 531,996 shares — an estimated $16M sold.

Alyeska Investment Group first reported a position in RARE in Q2 2024 and held it in 6 quarters. The position peaked at $65M in Q3 2024. 288 funds tracked by Wall St. Rank hold RARE as of Q4 2025.

  • Alyeska Investment Group reported no remaining Ultragenyx Pharmaceutical position as of Q4 2025 after selling out during the quarter.
  • Alyeska Investment Group sold 531,996 Ultragenyx Pharmaceutical shares in Q4 2025, an estimated $16M.
  • Alyeska Investment Group first reported a position in Ultragenyx Pharmaceutical in Q2 2024 and held it in 6 quarters.
  • Alyeska Investment Group's Ultragenyx Pharmaceutical position peaked at $65M in Q3 2024.
  • 288 funds tracked by Wall St. Rank held Ultragenyx Pharmaceutical as of Q4 2025.

Based on Alyeska Investment Group's 13F filing for Q4 2025, filed 13 Feb 2026.