XT
ZBIO

XTX Topco’s Zenas BioPharma ZBIO Stock Holding History

XTX Topco’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 		$378K Buy
19,311
+7,128
+59% +$160K 0.01% 2280
2025
Q4 		$442K Buy
+12,183
New +$401K 0.01% 1718

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

XTX Topco's ZBIO Position: Q1 2026 in Review

XTX Topco increased its Zenas BioPharma (ZBIO) stake by 59% in Q1 2026, buying an estimated $160K and bringing the position to 19,311 shares worth $378K. The position accounts for 0.01% of the portfolio, ranked #2280.

XTX Topco first reported a position in ZBIO in Q4 2025 and has held it in 2 quarters since. The position peaked at $442K in Q4 2025. 139 funds tracked by Wall St. Rank hold ZBIO as of Q1 2026.

  • XTX Topco held 19,311 shares of Zenas BioPharma worth $378K as of Q1 2026.
  • XTX Topco bought 7,128 Zenas BioPharma shares in Q1 2026, an estimated $160K.
  • Zenas BioPharma made up 0.01% of XTX Topco's portfolio in Q1 2026, its #2280 holding.
  • XTX Topco first reported a position in Zenas BioPharma in Q4 2025 and has held it in 2 quarters since.
  • XTX Topco's Zenas BioPharma position peaked at $442K in Q4 2025.
  • 139 funds tracked by Wall St. Rank held Zenas BioPharma as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.