California State Teachers Retirement System (CalSTRS)
ZBIO

California State Teachers Retirement System (CalSTRS)’s Zenas BioPharma ZBIO Stock Holding History

California State Teachers Retirement System (CalSTRS)’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 		$309K Buy
15,819
+118
+0.8% +$2.65K ﹤0.01% 2163
2025
Q4 		$570K Buy
15,701
+14,556
+1,271% +$479K ﹤0.01% 2037
2025
Q3 		$25.4K Buy
1,145
+1
+0.1% +$16 ﹤0.01% 2463
2025
Q2 		$11.1K Hold
1,144
– – ﹤0.01% 2705
2025
Q1 		$9.04K Hold
1,144
– – ﹤0.01% 2790
2024
Q4 		$9.37K Buy
+1,144
New +$17.8K ﹤0.01% 2880

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 $5.72T AUM 30.48% 1-Year Est. Return
NA
NVP Associates Menlo Park, California $176M AUM 208.78% 1-Year Est. Return

California State Teachers Retirement System (CalSTRS)'s ZBIO Position: Q1 2026 in Review

California State Teachers Retirement System (CalSTRS) increased its Zenas BioPharma (ZBIO) stake by 0.75% in Q1 2026, buying an estimated $2.65K and bringing the position to 15,819 shares worth $309K. The position accounts for ﹤0.01% of the portfolio, ranked #2163.

California State Teachers Retirement System (CalSTRS) first reported a position in ZBIO in Q4 2024 and has held it in 6 quarters since. The position peaked at $570K in Q4 2025. 139 funds tracked by Wall St. Rank hold ZBIO as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 15,819 shares of Zenas BioPharma worth $309K as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) bought 118 Zenas BioPharma shares in Q1 2026, an estimated $2.65K.
  • Zenas BioPharma made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #2163 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Zenas BioPharma in Q4 2024 and has held it in 6 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Zenas BioPharma position peaked at $570K in Q4 2025.
  • 139 funds tracked by Wall St. Rank held Zenas BioPharma as of Q1 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q1 2026, filed 18 May 2026.