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Joel Greenblatt’s Kiniksa Pharmaceuticals KNSA Stock Holding History

Joel Greenblatt’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
Q2 		$307K Sell
4,799
-2,775
-37% -$144K ﹤0.01% 1645
2026
Q1 		$365K Buy
7,574
+912
+14% +$40.4K ﹤0.01% 1562
2025
Q4 		$275K Buy
6,662
+317
+5% +$12.7K ﹤0.01% 1588
2025
Q3 		$246K Sell
6,345
-8,331
-57% -$271K ﹤0.01% 1559
2025
Q2 		$406K Buy
+14,676
New +$374K ﹤0.01% 1381

Other funds holding KNSA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $2.2B AUM 156.35% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
SSC
Spruce Street Capital New York $510M AUM

Joel Greenblatt's KNSA Position: Q2 2026 in Review

Joel Greenblatt reduced its Kiniksa Pharmaceuticals (KNSA) stake by 37% in Q2 2026, selling an estimated $144K and leaving 4,799 shares worth $307K. The position accounts for ﹤0.01% of the portfolio, ranked #1645.

Joel Greenblatt first reported a position in KNSA in Q2 2025 and has held it in 5 quarters since. The position peaked at $406K in Q2 2025. 265 funds tracked by Wall St. Rank hold KNSA as of Q2 2026.

  • Joel Greenblatt held 4,799 shares of Kiniksa Pharmaceuticals worth $307K as of Q2 2026.
  • Joel Greenblatt sold 2,775 Kiniksa Pharmaceuticals shares in Q2 2026, an estimated $144K.
  • Kiniksa Pharmaceuticals made up ﹤0.01% of Joel Greenblatt's portfolio in Q2 2026, its #1645 holding.
  • Joel Greenblatt first reported a position in Kiniksa Pharmaceuticals in Q2 2025 and has held it in 5 quarters since.
  • Joel Greenblatt's Kiniksa Pharmaceuticals position peaked at $406K in Q2 2025.
  • 265 funds tracked by Wall St. Rank held Kiniksa Pharmaceuticals as of Q2 2026.

Based on Gotham Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.