Proshares Trust ZBIO Institutional Ownership

ZBIO

$28.23 +0.15 (+0.53%)

At close: Oct 22, 2026 · 4:00 PM EDT

Institutions by Trading Activity

144 Institutions

Increased 92 63.9%

Unchanged 14 9.7%

Reduced 38 26.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

92.97%

▲+4.17 pp QoQ

Shares Held by Institutions

58.88Mn

of 63.33Mn outstanding

▲+6.29% QoQ

Shares Outstanding

63.33Mn

4.45Mn held outside 13F filers

Institutional Investors

144

filed 13F for Jun 2026

▲+5 vs prior quarter

Net Shares Added (QoQ)

+3.48Mn

accumulated since last quarter

Value of Holdings

$1.65Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Zenas BioPharma, Inc. (NASDAQ:ZBIO) appeared in the 13F filings of 144 institutional investors for the quarter ended June 30, 2026.

Together they owned 92.97% of the outstanding stock in Q2 2026, up from 88.80% a quarter earlier.
Total shares held in Zenas BioPharma rose 6.29% versus Q1 2026, while the number of holders rose 105.71% versus Q2 2025.
Looking at the 144 holders of ZBIO individually, 92 added to their positions, 38 reduced their stakes and 14 left their positions unchanged.
Altogether, institutional holders owned 58.88Mn ZBIO shares at the end of Q2 2026, up 3.48Mn from the prior quarter and up 25.24Mn from a year earlier.
As of June 30, 2026, FMR LLC held the largest stake in Zenas BioPharma with 9.51Mn shares, or 15.01% of shares outstanding.
Among holders that already owned Zenas BioPharma, the biggest buyers in Q2 2026 were T. Rowe Price Associates Inc (+869.66K shares), Bank of America Corp (+842.81K shares), BlackRock, Inc. (+648.68K shares), State Street Corp (+584.18K shares) and Two Sigma Investments, LP (+540.09K shares).
Holders that trimmed the most shares of Zenas BioPharma in Q2 2026 while keeping a position were Silverarc Capital Management, LLC (-626.15K shares), UBS Group AG (-189.32K shares), Marshall Wace, LLP (-178.49K shares), Polar Capital Holdings PLC (-135.67K shares) and Sio Capital Management, LLC (-123.17K shares).
Per Business Quant, the top 10 investors in ZBIO for the quarter ended June 30, 2026 were FMR LLC (9.51Mn shares), SR One Capital Management, LP (5.04Mn shares), NEA Management Company, LLC (4.02Mn shares), Enavate Sciences GP, LLC (3.92Mn shares), Federated Hermes, Inc. (3.12Mn shares), BlackRock, Inc. (2.69Mn shares), Capital International Investors (2.5Mn shares), Polar Capital Holdings PLC (2.41Mn shares), Fairmount Funds Management LLC (2.36Mn shares) and State Street Corp (2.06Mn shares).

Form 13F Holdings

144 Institutional Holders

Report period 30 Jun, 2026

Total shares held 58.88Mn

Of outstanding 92.97%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	FMR LLC	0000315066	9,506,701	15.01%	▲424,701	+4.68%	$241.28Mn
2	SR ONE CAPITAL MANAGEMENT, LP	0001910264	5,037,854	7.95%	0	0.00%	$127.86Mn
3	NEA Management Company, LLC	0001512848	4,023,219	6.35%	0	0.00%	$102.11Mn
4	Enavate Sciences GP, LLC	0001953107	3,919,159	6.19%	0	0.00%	$99.47Mn
5	Federated Hermes, Inc.	0001056288	3,116,805	4.92%	▼10,226	-0.33%	$79.10Mn
6	BlackRock, Inc.	0002012383	2,686,225	4.24%	▲648,677	+31.84%	$68.18Mn
7	Capital International Investors	0001562230	2,502,912	3.95%	▲68,912	+2.83%	$63.52Mn
8	Polar Capital Holdings Plc	0001837309	2,412,772	3.81%	▼135,672	-5.32%	$61.24Mn
9	Fairmount Funds Management LLC	0001802528	2,359,025	3.72%	0	0.00%	$59.87Mn
10	State Street Corp	0000093751	2,055,100	3.25%	▲584,177	+39.71%	$52.16Mn
11	NVP Associates, LLC	0001545692	1,838,482	2.90%	0	0.00%	$46.66Mn
12	WELLINGTON MANAGEMENT GROUP LLP	0000902219	1,593,819	2.52%	▲347,766	+27.91%	$40.45Mn
13	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,354,864	2.14%	▲109,473	+8.79%	$34.39Mn
14	Bank Of America Corp /De/	0000070858	1,231,159	1.94%	▲842,812	+217.03%	$31.25Mn
15	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	1,226,928	1.94%	▲869,662	+243.42%	$31.14K
16	ALLIANCEBERNSTEIN L.P.	0001109448	1,103,388	1.74%	▲206,067	+22.96%	$21.57Mn
17	GEODE CAPITAL MANAGEMENT, LLC	0001214717	882,654	1.39%	▲226,869	+34.60%	$22.41Mn
18	TWO SIGMA INVESTMENTS, LP	0001179392	815,150	1.29%	▲540,094	+196.36%	$20.69Mn
19	EcoR1 Capital, LLC	0001587114	789,500	1.25%	0	0.00%	$20.04Mn
20	MILLENNIUM MANAGEMENT LLC	0001273087	660,470	1.04%	▲183,652	+38.52%	$16.76Mn

Showing 1 to 20 of 144 holders