Primecap Management
KYNB

Primecap Management’s Kyntra Bio KYNB Stock Holding History

Primecap Management’s Portfolio KYNB Stock Details KYNB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-58,879
Closed -$721K – 325
2025
Q3 		$721K Sell
58,879
-30,817
-34% -$289K ﹤0.01% 314
2025
Q2 		$475K Sell
89,696
-59,937
-40% -$437K ﹤0.01% 321
2025
Q1 		$1.16M Sell
149,633
-35,012
-19% -$420K ﹤0.01% 315
2024
Q4 		$2.44M Sell
184,645
-211,804
-53% -$1.97M ﹤0.01% 299
2024
Q3 		$3.96M Sell
396,449
-149,789
-27% -$2.26M ﹤0.01% 290
2024
Q2 		$12.2M Sell
546,238
-30,608
-5% -$946K 0.01% 252
2024
Q1 		$33.9M Sell
576,846
-2,031
-0.4% -$87.5K 0.03% 211
2023
Q4 		$12.8M Sell
578,877
-10,122
-2% -$153K 0.01% 252
2023
Q3 		$12.7M Buy
588,999
+41,895
+8% +$1.65M 0.01% 250
2023
Q2 		$36.9M Sell
547,104
-17,964
-3% -$7.43M 0.03% 198
2023
Q1 		$264M Buy
565,068
+9,265
+2% +$4.9M 0.23% 85
2022
Q4 		$223M Buy
555,803
+28,607
+5% +$11M 0.2% 91
2022
Q3 		$171M Sell
527,196
-899
-0.2% -$290K 0.17% 104
2022
Q2 		$139M Sell
528,095
-4,619
-0.9% -$1.18M 0.12% 114
2022
Q1 		$160M Buy
532,714
+13,149
+3% +$4.58M 0.12% 119
2021
Q4 		$183M Buy
519,565
+7,895
+2% +$2.46M 0.13% 120
2021
Q3 		$131M Buy
511,670
+9,928
+2% +$3.52M 0.09% 141
2021
Q2 		$334M Buy
501,742
+30,872
+7% +$17.8M 0.22% 92
2021
Q1 		$409M Buy
470,870
+101,749
+28% +$108M 0.28% 81
2020
Q4 		$342M Buy
369,121
+85,760
+30% +$90.1M 0.25% 88
2020
Q3 		$291M Buy
283,361
+64,086
+29% +$69M 0.24% 88
2020
Q2 		$222M Buy
219,275
+18,374
+9% +$17.1M 0.19% 100
2020
Q1 		$175M Buy
200,901
+159,166
+381% +$158M 0.17% 105
2019
Q4 		$44.8M Buy
+41,735
New +$42.6M 0.03% 180

Other funds holding KYNB

AC
Armistice Capital New York $8.17B AUM 68.82% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
HighTower Advisors
HighTower Advisors Chicago, Illinois $104B AUM 28.3% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
DS
DRW Securities Chicago, Illinois $4.11B AUM 21.98% 1-Year Est. Return

Primecap Management's KYNB Position: Q4 2025 in Review

Primecap Management sold out of Kyntra Bio (KYNB) in Q4 2025, closing a stake of 58,879 shares — an estimated $721K sold.

Primecap Management first reported a position in KYNB in Q4 2019 and held it in 24 quarters. The position peaked at $409M in Q1 2021. 34 funds tracked by Wall St. Rank hold KYNB as of Q4 2025.

  • Primecap Management reported no remaining Kyntra Bio position as of Q4 2025 after selling out during the quarter.
  • Primecap Management sold 58,879 Kyntra Bio shares in Q4 2025, an estimated $721K.
  • Primecap Management first reported a position in Kyntra Bio in Q4 2019 and held it in 24 quarters.
  • Primecap Management's Kyntra Bio position peaked at $409M in Q1 2021.
  • 34 funds tracked by Wall St. Rank held Kyntra Bio as of Q4 2025.

Based on Primecap Management's 13F filing for Q4 2025, filed 11 Feb 2026.