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 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 $2.36B AUM 204.53% 1-Year Est. Return

RCMNY

Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return

Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

BNP Paribas Asset Management Paris, France $86.1B AUM 29.11% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

American Century Companies's ZYME Position: Q1 2026 in Review

American Century Companies increased its Zymeworks (ZYME) stake by 20% in Q1 2026, buying an estimated $284K and bringing the position to 70,851 shares worth $1.77M. The position accounts for ﹤0.01% of the portfolio, ranked #2165.

American Century Companies first reported a position in ZYME in Q3 2020 and has held it in 12 quarters since. The position peaked at $10.4M in Q4 2020. 211 funds tracked by Wall St. Rank hold ZYME as of Q1 2026.

American Century Companies held 70,851 shares of Zymeworks worth $1.77M as of Q1 2026.
American Century Companies bought 12,019 Zymeworks shares in Q1 2026, an estimated $284K.
Zymeworks made up ﹤0.01% of American Century Companies's portfolio in Q1 2026, its #2165 holding.
American Century Companies first reported a position in Zymeworks in Q3 2020 and has held it in 12 quarters since.
American Century Companies's Zymeworks position peaked at $10.4M in Q4 2020.
211 funds tracked by Wall St. Rank held Zymeworks as of Q1 2026.

Based on American Century Companies's 13F filing for Q1 2026, filed 15 May 2026.