Mariner
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Mariner’s Kiniksa Pharmaceuticals KNSA Stock Holding History

Mariner’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 		$952K Sell
14,882
-1,436
-9% -$74.5K ﹤0.01% 1988
2026
Q1 		$786K Buy
16,318
+2,799
+21% +$124K ﹤0.01% 2146
2025
Q4 		$558K Buy
13,519
+266
+2% +$10.7K ﹤0.01% 2369
2025
Q3 		$515K Buy
13,253
+732
+6% +$23.8K ﹤0.01% 2407
2025
Q2 		$346K Buy
12,521
+1,080
+9% +$27.5K ﹤0.01% 2611
2025
Q1 		$254K Buy
+11,441
New +$235K ﹤0.01% 2787
2024
Q4 		– Sell
-9,561
Closed -$239K – 3458
2024
Q3 		$239K Buy
+9,561
New +$233K ﹤0.01% 2773
2024
Q2 		– Sell
-13,427
Closed -$265K – 3236
2024
Q1 		$265K Buy
+13,427
New +$262K ﹤0.01% 2550

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

Mariner's KNSA Position: Q2 2026 in Review

Mariner reduced its Kiniksa Pharmaceuticals (KNSA) stake by 8.8% in Q2 2026, selling an estimated $74.5K and leaving 14,882 shares worth $952K. The position accounts for ﹤0.01% of the portfolio, ranked #1988.

Mariner first reported a position in KNSA in Q1 2024 and has held it in 8 quarters since. 266 funds tracked by Wall St. Rank hold KNSA as of Q2 2026.

  • Mariner held 14,882 shares of Kiniksa Pharmaceuticals worth $952K as of Q2 2026.
  • Mariner sold 1,436 Kiniksa Pharmaceuticals shares in Q2 2026, an estimated $74.5K.
  • Kiniksa Pharmaceuticals made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #1988 holding.
  • Mariner first reported a position in Kiniksa Pharmaceuticals in Q1 2024 and has held it in 8 quarters since.
  • 266 funds tracked by Wall St. Rank held Kiniksa Pharmaceuticals as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.