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 		– Sell
-24,421
Closed -$620K – 14692
2026
Q1 		$612K Sell
24,421
-151,667
-86% -$3.59M ﹤0.01% 9139
2025
Q4 		$4.64M Buy
176,088
+124,034
+238% +$2.71M ﹤0.01% 4142
2025
Q3 		$889K Sell
52,054
-207,083
-80% -$2.96M ﹤0.01% 7620
2025
Q2 		$3.25M Sell
259,137
-92,024
-26% -$1.1M ﹤0.01% 4806
2025
Q1 		$4.18M Buy
351,161
+299,645
+582% +$4.09M ﹤0.01% 3998
2024
Q4 		$754K Buy
51,516
+35,130
+214% +$491K ﹤0.01% 7648
2024
Q3 		$206K Sell
16,386
-43,993
-73% -$479K ﹤0.01% 10422
2024
Q2 		$514K Buy
60,379
+25,085
+71% +$223K ﹤0.01% 8195
2024
Q1 		$371K Sell
35,294
-41,446
-54% -$460K ﹤0.01% 9206
2023
Q4 		$797K Buy
76,740
+11,219
+17% +$89.4K ﹤0.01% 7552
2023
Q3 		$415K Sell
65,521
-66,178
-50% -$489K ﹤0.01% 8663
2023
Q2 		$1.14M Sell
131,699
-254,415
-66% -$2.28M ﹤0.01% 6383
2023
Q1 		$3.49M Buy
386,114
+291,886
+310% +$2.55M ﹤0.01% 4016
2022
Q4 		$741K Sell
94,228
-87,519
-48% -$615K ﹤0.01% 6873
2022
Q3 		$1.12M Sell
181,747
-32,734
-15% -$197K ﹤0.01% 6341
2022
Q2 		$1.14M Buy
214,481
+88,801
+71% +$537K ﹤0.01% 6210
2022
Q1 		$823K Sell
125,680
-23,925
-16% -$213K ﹤0.01% 7636
2021
Q4 		$2.45M Buy
149,605
+101,519
+211% +$2.12M ﹤0.01% 5040
2021
Q3 		$1.4M Buy
48,086
+22,285
+86% +$741K ﹤0.01% 6672
2021
Q2 		$895K Sell
25,801
-43,082
-63% -$1.37M ﹤0.01% 8071
2021
Q1 		$2.17M Buy
68,883
+55,917
+431% +$2.27M ﹤0.01% 5719
2020
Q4 		$613K Buy
+12,966
New +$602K ﹤0.01% 7842
2020
Q1 		– Sell
-36,442
Closed -$1.49M – 11011
2019
Q4 		$1.66M Buy
36,442
+2,257
+7% +$82K ﹤0.01% 4628
2019
Q3 		$848K Sell
34,185
-2,670
-7% -$66.9K ﹤0.01% 6066
2019
Q2 		$811K Buy
+36,855
New +$677K ﹤0.01% 6164
2019
Q1 		– Sell
-14,207
Closed -$220K – 9994
2018
Q4 		$209K Buy
+14,207
New +$186K ﹤0.01% 7658

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.