AllianceBernstein
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AllianceBernstein’s Zenas BioPharma ZBIO Stock Holding History

AllianceBernstein’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 		$21.6M Buy
1,103,388
+206,067
+23% +$4.1M 0.01% 886
2026
Q1 		$32.6M Buy
897,321
+878,971
+4,790% +$19.7M 0.01% 735
2025
Q4 		$666K Hold
18,350
– – ﹤0.01% 2521
2025
Q3 		$407K Buy
18,350
+1,990
+12% +$32.4K ﹤0.01% 2796
2025
Q2 		$159K Buy
+16,360
New +$159K ﹤0.01% 3099

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
PCH
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

AllianceBernstein's ZBIO Position: Q2 2026 in Review

AllianceBernstein increased its Zenas BioPharma (ZBIO) stake by 23% in Q2 2026, buying an estimated $4.1M and bringing the position to 1,103,388 shares worth $21.6M. The position accounts for 0.01% of the portfolio, ranked #886.

AllianceBernstein first reported a position in ZBIO in Q2 2025 and has held it in 5 quarters since. The position peaked at $32.6M in Q1 2026. 144 funds tracked by Wall St. Rank hold ZBIO as of Q2 2026.

  • AllianceBernstein held 1,103,388 shares of Zenas BioPharma worth $21.6M as of Q2 2026.
  • AllianceBernstein bought 206,067 Zenas BioPharma shares in Q2 2026, an estimated $4.1M.
  • Zenas BioPharma made up 0.01% of AllianceBernstein's portfolio in Q2 2026, its #886 holding.
  • AllianceBernstein first reported a position in Zenas BioPharma in Q2 2025 and has held it in 5 quarters since.
  • AllianceBernstein's Zenas BioPharma position peaked at $32.6M in Q1 2026.
  • 144 funds tracked by Wall St. Rank held Zenas BioPharma as of Q2 2026.

Based on AllianceBernstein's 13F filing for Q2 2026, filed 14 Aug 2026.