APM
KZR

Avidity Partners Management’s Kezar Life Sciences KZR Stock Holding History

Avidity Partners Management’s Portfolio KZR Stock Details KZR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-502,600
Closed -$2.3M – 53
2025
Q2 		$2.3M Hold
502,600
– – 0.46% 47
2025
Q1 		$2.45M Hold
502,600
– – 0.47% 51
2024
Q4 		$3.38M Hold
502,600
– – 0.33% 54
2024
Q3 		$3.89M Hold
502,600
– – 0.2% 69
2024
Q2 		$3.02M Hold
502,600
– – 0.13% 79
2024
Q1 		$4.53M Buy
502,600
+55
+0% +$501 0.15% 79
2023
Q4 		$4.76M Sell
502,545
-98,565
-16% -$866K 0.17% 66
2023
Q3 		$7.15M Sell
601,110
-6,890
-1% -$122K 0.29% 71
2023
Q2 		$14.9M Sell
608,000
-43,940
-7% -$1.14M 0.52% 65
2023
Q1 		$20.4M Sell
651,940
-26,300
-4% -$1.52M 0.68% 46
2022
Q4 		$47.7M Buy
678,240
+136,800
+25% +$10.1M 1.03% 33
2022
Q3 		$46.6M Buy
541,440
+136,440
+34% +$13.3M 0.95% 34
2022
Q2 		$33.5M Buy
405,000
+53,200
+15% +$4.69M 0.77% 34
2022
Q1 		$58.5M Buy
351,800
+28,980
+9% +$4.16M 1.22% 27
2021
Q4 		$54M Buy
322,820
+296,820
+1,142% +$33.5M 1.14% 34
2021
Q3 		$2.25M Buy
+26,000
New +$1.72M 0.05% 98
2021
Q2 		– Sell
-190,708
Closed -$11.4M – 134
2021
Q1 		$11.4M Buy
+190,708
New +$11.1M 0.31% 67

Other funds holding KZR

BCM
BML Capital Management Zionsville, Indiana $176M AUM 123.21% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $1.97B AUM 125.1% 1-Year Est. Return
SCM
Suvretta Capital Management New York $3.92B AUM 86.67% 1-Year Est. Return
SCM
Stonepine Capital Management Bend, Oregon $250M AUM 77.6% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
O
OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
PLC
Peapod Lane Capital Bedford Hills, New York $148M AUM 89.92% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

Avidity Partners Management's KZR Position: Q3 2025 in Review

Avidity Partners Management sold out of Kezar Life Sciences (KZR) in Q3 2025, closing a stake of 502,600 shares — an estimated $2.3M sold.

Avidity Partners Management first reported a position in KZR in Q1 2021 and held it in 17 quarters. The position peaked at $58.5M in Q1 2022. 39 funds tracked by Wall St. Rank hold KZR as of Q3 2025.

  • Avidity Partners Management reported no remaining Kezar Life Sciences position as of Q3 2025 after selling out during the quarter.
  • Avidity Partners Management sold 502,600 Kezar Life Sciences shares in Q3 2025, an estimated $2.3M.
  • Avidity Partners Management first reported a position in Kezar Life Sciences in Q1 2021 and held it in 17 quarters.
  • Avidity Partners Management's Kezar Life Sciences position peaked at $58.5M in Q1 2022.
  • 39 funds tracked by Wall St. Rank held Kezar Life Sciences as of Q3 2025.

Based on Avidity Partners Management's 13F filing for Q3 2025, filed 14 Nov 2025.