SOCM
ZBIO

SR One Capital Management’s Zenas BioPharma ZBIO Stock Holding History

SR One Capital Management’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 		$98.5M Hold
5,037,854
– – 10.76% 3
2025
Q4 		$183M Buy
5,037,854
+126,315
+3% +$4.15M 25.9% 1
2025
Q3 		$109M Hold
4,911,539
– – 15.77% 3
2025
Q2 		$47.6M Hold
4,911,539
– – 10.32% 4
2025
Q1 		$38.8M Hold
4,911,539
– – 9.97% 4
2024
Q4 		$40.2M Hold
4,911,539
– – 9.81% 5
2024
Q3 		$83.1M Buy
+4,911,539
New +$88.3M 16.66% 2

Other funds holding ZBIO

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
NMC
NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return
ES
Enavate Sciences Menlo Park, California $352M AUM 220.14% 1-Year Est. Return
Federated Hermes
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
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
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NA
NVP Associates Menlo Park, California $328M AUM 166.51% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

SR One Capital Management's ZBIO Position: Q1 2026 in Review

SR One Capital Management held its Zenas BioPharma (ZBIO) position steady in Q1 2026 at 5,037,854 shares worth $98.5M. The position accounts for 10.76% of the portfolio, ranked #3.

SR One Capital Management first reported a position in ZBIO in Q3 2024 and has held it in 7 quarters since. The position peaked at $183M in Q4 2025. 139 funds tracked by Wall St. Rank hold ZBIO as of Q1 2026.

  • SR One Capital Management held 5,037,854 shares of Zenas BioPharma worth $98.5M as of Q1 2026.
  • SR One Capital Management left its Zenas BioPharma share count unchanged in Q1 2026.
  • Zenas BioPharma made up 10.76% of SR One Capital Management's portfolio in Q1 2026, its #3 holding.
  • SR One Capital Management first reported a position in Zenas BioPharma in Q3 2024 and has held it in 7 quarters since.
  • SR One Capital Management's Zenas BioPharma position peaked at $183M in Q4 2025.
  • 139 funds tracked by Wall St. Rank held Zenas BioPharma as of Q1 2026.

Based on SR One Capital Management's 13F filing for Q1 2026, filed 14 May 2026.