Russell Investments Group
ZBIO

Russell Investments Group’s Zenas BioPharma ZBIO Stock Holding History

Russell Investments Group’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 		$53.2K Buy
2,721
+1,376
+102% +$30.9K ﹤0.01% 3295
2025
Q4 		$48.8K Hold
1,345
– – ﹤0.01% 3307
2025
Q3 		$29.9K Buy
+1,345
New +$21.9K ﹤0.01% 3466

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

Russell Investments Group's ZBIO Position: Q1 2026 in Review

Russell Investments Group increased its Zenas BioPharma (ZBIO) stake by 102% in Q1 2026, buying an estimated $30.9K and bringing the position to 2,721 shares worth $53.2K. The position accounts for ﹤0.01% of the portfolio, ranked #3295.

Russell Investments Group first reported a position in ZBIO in Q3 2025 and has held it in 3 quarters since. 139 funds tracked by Wall St. Rank hold ZBIO as of Q1 2026.

  • Russell Investments Group held 2,721 shares of Zenas BioPharma worth $53.2K as of Q1 2026.
  • Russell Investments Group bought 1,376 Zenas BioPharma shares in Q1 2026, an estimated $30.9K.
  • Zenas BioPharma made up ﹤0.01% of Russell Investments Group's portfolio in Q1 2026, its #3295 holding.
  • Russell Investments Group first reported a position in Zenas BioPharma in Q3 2025 and has held it in 3 quarters since.
  • 139 funds tracked by Wall St. Rank held Zenas BioPharma as of Q1 2026.

Based on Russell Investments Group's 13F filing for Q1 2026, filed 8 May 2026.