American Century Companies’s Zymeworks ZYME Stock Holding History

American Century Companies’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	-70,851	Closed	-$1.77M	–	3011
2026 Q1	$1.77M	Buy	70,851 +12,019	+20%	+$284K	﹤0.01%	2165
2025 Q4	$1.55M	Buy	58,832 +7,816	+15%	+$170K	﹤0.01%	2177
2025 Q3	$871K	Buy	51,016 +19,869	+64%	+$284K	﹤0.01%	2343
2025 Q2	$391K	Hold	31,147	–	–	﹤0.01%	2597
2025 Q1	$371K	Sell	31,147 -8,795	-22%	-$120K	﹤0.01%	2615
2024 Q4	$585K	Buy	+39,942	New	+$559K	﹤0.01%	2443
2022 Q1	–	Sell	-140,548	Closed	-$2.3M	–	2366
2021 Q4	$2.3M	Hold	140,548	–	–	﹤0.01%	1305
2021 Q3	$4.08M	Hold	140,548	–	–	﹤0.01%	1081
2021 Q2	$4.88M	Sell	140,548 -79,456	-36%	-$2.52M	﹤0.01%	999
2021 Q1	$6.95M	Buy	220,004 +660	+0.3%	+$26.8K	0.01%	860
2020 Q4	$10.4M	Buy	219,344 +12	+0%	+$557	0.01%	757
2020 Q3	$10.2M	Buy	+219,332	New	+$7.53M	0.01%	709

Other funds holding ZYME

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 New York $6.73T AUM 46.02% 1-Year Est. Return

Perceptive Advisors New York $6.66B AUM 360.84% 1-Year Est. Return

BVF Inc San Francisco, California $3.91B AUM 304.52% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

BNP Paribas Asset Management Paris, France $99.8B AUM 45.22% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.56% 1-Year Est. Return

Nextech Invest Zurich, Switzerland $2.11B AUM 413.84% 1-Year Est. Return

American Century Companies's ZYME Position: Q2 2026 in Review

American Century Companies sold out of Zymeworks (ZYME) in Q2 2026, closing a stake of 70,851 shares — an estimated $1.77M sold.

American Century Companies first reported a position in ZYME in Q3 2020 and held it in 12 quarters. The position peaked at $10.4M in Q4 2020. 202 funds tracked by Wall St. Rank hold ZYME as of Q2 2026.

American Century Companies reported no remaining Zymeworks position as of Q2 2026 after selling out during the quarter.
American Century Companies sold 70,851 Zymeworks shares in Q2 2026, an estimated $1.77M.
American Century Companies first reported a position in Zymeworks in Q3 2020 and held it in 12 quarters.
American Century Companies's Zymeworks position peaked at $10.4M in Q4 2020.
202 funds tracked by Wall St. Rank held Zymeworks as of Q2 2026.

Based on American Century Companies's 13F filing for Q2 2026, filed 12 Aug 2026.