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Rossby Financial’s Ultragenyx Pharmaceutical RARE Stock Holding History

Rossby Financial’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
Q2 		$1.34K Buy
40
+1
+3% +$25 ﹤0.01% 1838
2026
Q1 		$835 Buy
+39
New +$878 ﹤0.01% 2028

Other funds holding RARE

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Sands Capital Management
Sands Capital Management Arlington, Virginia $26.9B AUM 34.44% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return

Rossby Financial's RARE Position: Q2 2026 in Review

Rossby Financial increased its Ultragenyx Pharmaceutical (RARE) stake by 2.6% in Q2 2026, buying an estimated $25 and bringing the position to 40 shares worth $1.34K. The position accounts for ﹤0.01% of the portfolio, ranked #1838.

Rossby Financial first reported a position in RARE in Q1 2026 and has held it in 2 quarters since. 311 funds tracked by Wall St. Rank hold RARE as of Q2 2026.

  • Rossby Financial held 40 shares of Ultragenyx Pharmaceutical worth $1.34K as of Q2 2026.
  • Rossby Financial bought 1 Ultragenyx Pharmaceutical share in Q2 2026, an estimated $25.
  • Ultragenyx Pharmaceutical made up ﹤0.01% of Rossby Financial's portfolio in Q2 2026, its #1838 holding.
  • Rossby Financial first reported a position in Ultragenyx Pharmaceutical in Q1 2026 and has held it in 2 quarters since.
  • 311 funds tracked by Wall St. Rank held Ultragenyx Pharmaceutical as of Q2 2026.

Based on Rossby Financial's 13F filing for Q2 2026, filed 4 Aug 2026.