Russell Investments Group
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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
Q2 		$323K Buy
12,740
+10,019
+368% +$199K ﹤0.01% 2985
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 $2.3T AUM 54.33% 1-Year Est. Return
SOCM
SR One Capital Management Wayne, Pennsylvania $1.04B AUM 262.99% 1-Year Est. Return
NMC
NEA Management Company Timonium, Maryland $1.59B AUM 234.06% 1-Year Est. Return
ES
Enavate Sciences Menlo Park, California $345M AUM 134.64% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
Polar Capital Holdings
Polar Capital Holdings London, United Kingdom $42.4B AUM 181.11% 1-Year Est. Return
RPSM
Royalty Pharma Sub-Manager New York $242M AUM
FFM
Fairmount Funds Management West Conshohocken, Pennsylvania $1.51B AUM 546.08% 1-Year Est. Return

Russell Investments Group's ZBIO Position: Q2 2026 in Review

Russell Investments Group increased its Zenas BioPharma (ZBIO) stake by 368% in Q2 2026, buying an estimated $199K and bringing the position to 12,740 shares worth $323K. The position accounts for ﹤0.01% of the portfolio, ranked #2985.

Russell Investments Group first reported a position in ZBIO in Q3 2025 and has held it in 4 quarters since. 144 funds tracked by Wall St. Rank hold ZBIO as of Q2 2026.

  • Russell Investments Group held 12,740 shares of Zenas BioPharma worth $323K as of Q2 2026.
  • Russell Investments Group bought 10,019 Zenas BioPharma shares in Q2 2026, an estimated $199K.
  • Zenas BioPharma made up ﹤0.01% of Russell Investments Group's portfolio in Q2 2026, its #2985 holding.
  • Russell Investments Group first reported a position in Zenas BioPharma in Q3 2025 and has held it in 4 quarters since.
  • 144 funds tracked by Wall St. Rank held Zenas BioPharma as of Q2 2026.

Based on Russell Investments Group's 13F filing for Q2 2026, filed 6 Aug 2026.