DMKJ
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David M. Knott Jr’s Ultragenyx Pharmaceutical RARE Stock Holding History

David M. Knott Jr’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 		$1.27M Buy
38,069
+5,000
+15% +$124K 0.67% 28
2026
Q1 		$693K Buy
33,069
+13,063
+65% +$294K 0.41% 41
2025
Q4 		$460K Sell
20,006
-31,994
-62% -$1.05M 0.21% 51
2025
Q3 		$1.56M Hold
52,000
– – 0.63% 26
2025
Q2 		$1.89M Buy
52,000
+4,000
+8% +$144K 0.86% 21
2025
Q1 		$1.74M Buy
+48,000
New +$2M 0.82% 21

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

David M. Knott Jr's RARE Position: Q2 2026 in Review

David M. Knott Jr increased its Ultragenyx Pharmaceutical (RARE) stake by 15% in Q2 2026, buying an estimated $124K and bringing the position to 38,069 shares worth $1.27M. The position accounts for 0.67% of the portfolio, ranked #28.

David M. Knott Jr first reported a position in RARE in Q1 2025 and has held it in 6 quarters since. The position peaked at $1.89M in Q2 2025. 310 funds tracked by Wall St. Rank hold RARE as of Q2 2026.

  • David M. Knott Jr held 38,069 shares of Ultragenyx Pharmaceutical worth $1.27M as of Q2 2026.
  • David M. Knott Jr bought 5,000 Ultragenyx Pharmaceutical shares in Q2 2026, an estimated $124K.
  • Ultragenyx Pharmaceutical made up 0.67% of David M. Knott Jr's portfolio in Q2 2026, its #28 holding.
  • David M. Knott Jr first reported a position in Ultragenyx Pharmaceutical in Q1 2025 and has held it in 6 quarters since.
  • David M. Knott Jr's Ultragenyx Pharmaceutical position peaked at $1.89M in Q2 2025.
  • 310 funds tracked by Wall St. Rank held Ultragenyx Pharmaceutical as of Q2 2026.

Based on David M. Knott Jr's 13F filing for Q2 2026, filed 12 Aug 2026.