ZBIOZenas BioPharma, Inc.

$33.06

Who owns ZBIO

139 institutions reported holding ZBIO for 2026Q1, together 100% of the company, more than the 116 a quarter earlier.

139

Institutions reporting a position · as of 2026Q1 · up from 116 the quarter before

Shares held by institutions
55.4M

Shares held by institutions · 100% of the company · long US equity positions only, as reported on Form 13F

Reported value
$1.10B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
45%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
7
New positions
45
Positions exited
28
Added to
57
Reduced
17
Top 10 holdersof the company
65%
Institutional ownership by quarter, 2024Q3 to 2026Q1
QuarterFilersSharesReported value
2026Q113955.4M$1.10B
2025Q411641.6M$1.50B
2025Q37834.8M$774M
2025Q27334.1M$330M
2025Q16732.5M$257M
2024Q46531.7M$260M
2024Q34324.8M$419M
Largest reported holders, 2026Q1
HolderShares% of companyValue
FMR LLC9.1M16%$178M
SR One Capital Management, LP5.0M9.1%$98M
NEA Management Company, LLC4.0M7.2%$79M
ENAVATE SCIENCES GP, LLC3.9M7.0%$77M
FEDERATED INVESTORS INC /PA/3.1M5.6%$61M
Polar Capital Holdings Plc2.5M4.6%$50M
Capital International Investors2.4M4.4%$48M
Fairmount Funds Management LLC2.4M4.2%$46M
BlackRock Inc.2.0M3.7%$40M
NVP ASSOCIATES, LLC1.8M3.3%$36M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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