ArrowMark Colorado Holdings’s Zenas BioPharma ZBIO Stock Holding History

ArrowMark Colorado Holdings’s Portfolio ZBIO Stock Details ZBIO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$12.9M	Sell	658,909 -92,252	-12%	-$2.07M	0.34%	87
2025 Q4	$27.3M	Sell	751,161 -73,507	-9%	-$2.42M	0.6%	50
2025 Q3	$18.3M	Sell	824,668 -269,670	-25%	-$4.39M	0.34%	82
2025 Q2	$10.6M	Sell	1,094,338 -3,031	-0.3%	-$29.5K	0.19%	122
2025 Q1	$8.67M	Buy	1,097,369 +469,700	+75%	+$3.68M	0.14%	136
2024 Q4	$5.14M	Buy	627,669 +327,669	+109%	+$5.11M	0.07%	190
2024 Q3	$5.08M	Buy	+300,000	New	+$5.39M	0.07%	188

Other funds holding ZBIO

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

SOCM

SR One Capital Management Wayne, Pennsylvania $915M AUM 209.71% 1-Year Est. Return

NMC

NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return

Enavate Sciences Menlo Park, California $352M AUM 220.14% 1-Year Est. Return

Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return

PCH

Polar Capital Holdings London, United Kingdom $28.2B AUM 115.26% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

FFM

Fairmount Funds Management West Conshohocken, Pennsylvania $1.38B AUM 407.79% 1-Year Est. Return

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

NVP Associates Menlo Park, California $176M AUM 208.78% 1-Year Est. Return

ArrowMark Colorado Holdings's ZBIO Position: Q1 2026 in Review

ArrowMark Colorado Holdings reduced its Zenas BioPharma (ZBIO) stake by 12% in Q1 2026, selling an estimated $2.07M and leaving 658,909 shares worth $12.9M. The position accounts for 0.34% of the portfolio, ranked #87.

ArrowMark Colorado Holdings first reported a position in ZBIO in Q3 2024 and has held it in 7 quarters since. The position peaked at $27.3M in Q4 2025. 139 funds tracked by Wall St. Rank hold ZBIO as of Q1 2026.

ArrowMark Colorado Holdings held 658,909 shares of Zenas BioPharma worth $12.9M as of Q1 2026.
ArrowMark Colorado Holdings sold 92,252 Zenas BioPharma shares in Q1 2026, an estimated $2.07M.
Zenas BioPharma made up 0.34% of ArrowMark Colorado Holdings's portfolio in Q1 2026, its #87 holding.
ArrowMark Colorado Holdings first reported a position in Zenas BioPharma in Q3 2024 and has held it in 7 quarters since.
ArrowMark Colorado Holdings's Zenas BioPharma position peaked at $27.3M in Q4 2025.
139 funds tracked by Wall St. Rank held Zenas BioPharma as of Q1 2026.

Based on ArrowMark Colorado Holdings's 13F filing for Q1 2026, filed 15 May 2026.