JY
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Jeff Yass’s Zymeworks ZYME Stock Holding History

Jeff Yass’s Portfolio ZYME Stock Details ZYME Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.41M Sell
130,400
-86,000
-40% -$2.19M ﹤0.01% 5373
2026
Q1 		$5.42M Buy
216,400
+22,300
+11% +$528K ﹤0.01% 4092
2025
Q4 		$5.11M Buy
194,100
+39,900
+26% +$870K ﹤0.01% 3984
2025
Q3 		$2.63M Buy
154,200
+86,100
+126% +$1.23M ﹤0.01% 5226
2025
Q2 		$855K Buy
68,100
+48,800
+253% +$581K ﹤0.01% 7838
2025
Q1 		$230K Sell
19,300
-1,500
-7% -$20.5K ﹤0.01% 10647
2024
Q4 		$305K Sell
20,800
-25,000
-55% -$350K ﹤0.01% 9800
2024
Q3 		$575K Buy
45,800
+4,500
+11% +$49K ﹤0.01% 8123
2024
Q2 		$351K Buy
41,300
+15,100
+58% +$134K ﹤0.01% 9110
2024
Q1 		$276K Sell
26,200
-15,900
-38% -$177K ﹤0.01% 9890
2023
Q4 		$437K Buy
42,100
+21,200
+101% +$169K ﹤0.01% 8993
2023
Q3 		$133K Sell
20,900
-26,900
-56% -$199K ﹤0.01% 10679
2023
Q2 		$413K Sell
47,800
-77,100
-62% -$690K ﹤0.01% 8762
2023
Q1 		$1.13M Buy
124,900
+11,900
+11% +$104K ﹤0.01% 6497
2022
Q4 		$888K Buy
113,000
+20,200
+22% +$142K ﹤0.01% 6447
2022
Q3 		$571K Sell
92,800
-8,200
-8% -$49.4K ﹤0.01% 8137
2022
Q2 		$535K Buy
101,000
+72,400
+253% +$438K ﹤0.01% 8092
2022
Q1 		$187K Sell
28,600
-4,600
-14% -$41K ﹤0.01% 11313
2021
Q4 		$544K Sell
33,200
-51,100
-61% -$1.07M ﹤0.01% 8961
2021
Q3 		$2.45M Sell
84,300
-19,100
-18% -$635K ﹤0.01% 5401
2021
Q2 		$3.59M Buy
103,400
+48,300
+88% +$1.53M ﹤0.01% 4671
2021
Q1 		$1.74M Sell
55,100
-43,600
-44% -$1.77M ﹤0.01% 6254
2020
Q4 		$4.67M Sell
98,700
-11,700
-11% -$543K ﹤0.01% 3514
2020
Q3 		$5.14M Buy
110,400
+56,900
+106% +$1.95M ﹤0.01% 3007
2020
Q2 		$1.93M Buy
53,500
+8,300
+18% +$306K ﹤0.01% 4571
2020
Q1 		$1.6M Sell
45,200
-25,500
-36% -$1.04M ﹤0.01% 4378
2019
Q4 		$3.21M Buy
70,700
+46,400
+191% +$1.69M ﹤0.01% 3588
2019
Q3 		$603K Sell
24,300
-21,700
-47% -$544K ﹤0.01% 6860
2019
Q2 		$1.01M Buy
46,000
+16,800
+58% +$308K ﹤0.01% 5634
2019
Q1 		$472K Buy
29,200
+10,500
+56% +$163K ﹤0.01% 6398
2018
Q4 		$275K Buy
+18,700
New +$245K ﹤0.01% 7161

Other funds holding ZYME

EC
EcoR1 Capital San Francisco, California $2.06B AUM 215.32% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PA
Perceptive Advisors New York $6.66B AUM 360.84% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.91B AUM 304.52% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
BNP Paribas Asset Management
BNP Paribas Asset Management Paris, France $99.8B AUM 45.22% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.56% 1-Year Est. Return
NI
Nextech Invest Zurich, Switzerland $2.11B AUM 413.84% 1-Year Est. Return

Jeff Yass's ZYME Position: Q2 2026 in Review

Jeff Yass sold out of Zymeworks (ZYME) in Q2 2026, closing a stake of 24,421 shares — an estimated $620K sold.

Jeff Yass first reported a position in ZYME in Q4 2018 and held it in 26 quarters. The position peaked at $4.64M in Q4 2025. 201 funds tracked by Wall St. Rank hold ZYME as of Q2 2026.

  • Jeff Yass reported no remaining Zymeworks position as of Q2 2026 after selling out during the quarter.
  • Jeff Yass sold 24,421 Zymeworks shares in Q2 2026, an estimated $620K.
  • Jeff Yass first reported a position in Zymeworks in Q4 2018 and held it in 26 quarters.
  • Jeff Yass's Zymeworks position peaked at $4.64M in Q4 2025.
  • 201 funds tracked by Wall St. Rank held Zymeworks as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.