State of Wisconsin Investment Board
ZBIO

State of Wisconsin Investment Board’s Zenas BioPharma ZBIO Stock Holding History

State of Wisconsin Investment Board’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 		$407K Buy
20,814
+10,593
+104% +$238K ﹤0.01% 2098
2025
Q4 		$371K Buy
+10,221
New +$336K ﹤0.01% 2079

Other funds holding ZBIO

Fidelity Investments
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
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

State of Wisconsin Investment Board's ZBIO Position: Q1 2026 in Review

State of Wisconsin Investment Board increased its Zenas BioPharma (ZBIO) stake by 104% in Q1 2026, buying an estimated $238K and bringing the position to 20,814 shares worth $407K. The position accounts for ﹤0.01% of the portfolio, ranked #2098.

State of Wisconsin Investment Board first reported a position in ZBIO in Q4 2025 and has held it in 2 quarters since. 139 funds tracked by Wall St. Rank hold ZBIO as of Q1 2026.

  • State of Wisconsin Investment Board held 20,814 shares of Zenas BioPharma worth $407K as of Q1 2026.
  • State of Wisconsin Investment Board bought 10,593 Zenas BioPharma shares in Q1 2026, an estimated $238K.
  • Zenas BioPharma made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #2098 holding.
  • State of Wisconsin Investment Board first reported a position in Zenas BioPharma in Q4 2025 and has held it in 2 quarters since.
  • 139 funds tracked by Wall St. Rank held Zenas BioPharma as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.