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Magnetar Financial’s Kiniksa Pharmaceuticals KNSA Stock Holding History

Magnetar Financial’s Portfolio KNSA Stock Details KNSA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-15,295
Closed -$631K – 1277
2025
Q4 		$631K Buy
+15,295
New +$614K 0.01% 515

Other funds holding KNSA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $1.97B AUM 125.1% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

Magnetar Financial's KNSA Position: Q1 2026 in Review

Magnetar Financial sold out of Kiniksa Pharmaceuticals (KNSA) in Q1 2026, closing a stake of 15,295 shares — an estimated $631K sold.

Magnetar Financial first reported a position in KNSA in Q4 2025 and held it in 1 quarter. The position peaked at $631K in Q4 2025. 228 funds tracked by Wall St. Rank hold KNSA as of Q1 2026.

  • Magnetar Financial reported no remaining Kiniksa Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Magnetar Financial sold 15,295 Kiniksa Pharmaceuticals shares in Q1 2026, an estimated $631K.
  • Magnetar Financial first reported a position in Kiniksa Pharmaceuticals in Q4 2025 and held it in 1 quarter.
  • Magnetar Financial's Kiniksa Pharmaceuticals position peaked at $631K in Q4 2025.
  • 228 funds tracked by Wall St. Rank held Kiniksa Pharmaceuticals as of Q1 2026.

Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.