Fidelity Investments
ZBIO

Fidelity Investments’s Zenas BioPharma ZBIO Stock Holding History

Fidelity Investments’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 		$178M Buy
9,082,000
+1,377,745
+18% +$30.9M 0.01% 919
2025
Q4 		$280M Buy
7,704,255
+2,883,885
+60% +$94.8M 0.01% 730
2025
Q3 		$107M Buy
4,820,370
+1,496,836
+45% +$24.4M 0.01% 1152
2025
Q2 		$32.2M Buy
3,323,534
+471,163
+17% +$4.59M ﹤0.01% 1547
2025
Q1 		$22.5M Buy
2,852,371
+1,070,656
+60% +$8.38M ﹤0.01% 1636
2024
Q4 		$14.6M Sell
1,781,715
-218,285
-11% -$3.4M ﹤0.01% 1828
2024
Q3 		$33.8M Buy
+2,000,000
New +$36M ﹤0.01% 1529

Other funds holding ZBIO

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
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

Fidelity Investments's ZBIO Position: Q1 2026 in Review

Fidelity Investments increased its Zenas BioPharma (ZBIO) stake by 18% in Q1 2026, buying an estimated $30.9M and bringing the position to 9,082,000 shares worth $178M. The position accounts for 0.01% of the portfolio, ranked #919.

Fidelity Investments first reported a position in ZBIO in Q3 2024 and has held it in 7 quarters since. The position peaked at $280M in Q4 2025. 139 funds tracked by Wall St. Rank hold ZBIO as of Q1 2026.

  • Fidelity Investments held 9,082,000 shares of Zenas BioPharma worth $178M as of Q1 2026.
  • Fidelity Investments bought 1,377,745 Zenas BioPharma shares in Q1 2026, an estimated $30.9M.
  • Zenas BioPharma made up 0.01% of Fidelity Investments's portfolio in Q1 2026, its #919 holding.
  • Fidelity Investments first reported a position in Zenas BioPharma in Q3 2024 and has held it in 7 quarters since.
  • Fidelity Investments's Zenas BioPharma position peaked at $280M in Q4 2025.
  • 139 funds tracked by Wall St. Rank held Zenas BioPharma as of Q1 2026.

Based on Fidelity Investments's 13F filing for Q1 2026, filed 15 May 2026.