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Zenas BioPharma (ZBIO) Institutional Ownership

Zenas BioPharma logo
$25.16 -1.24 (-4.70%)
Closing price 10/13/2026 04:00 PM Eastern
Extended Trading
$25.28 +0.11 (+0.46%)
As of 10/13/2026 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Zenas BioPharma (NASDAQ:ZBIO)

Number of
Institutional Buyers
(last 12 months)
67
Total
Institutional Inflows
(last 12 months)
$353.89M
Number of
Institutional Sellers
(last 12 months)
14
Total
Institutional Outflows
(last 12 months)
$37.03M
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ZBIO Institutional Buying and Selling by Quarter

Zenas BioPharma Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Engineers Gate Manager LP12,980$329K0.0%N/A0.020%
9/9/2026Squarepoint Ops LLC125,185$3.18M0.0%+192.0%0.192%
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC37,790$959K0.0%+143.4%0.058%
8/19/2026Wellington Management Group LLP1,593,819$40.45M0.0%+27.9%2.445%
8/17/2026Bank of America Corp DE1,231,159$31.25M0.0%N/A1.889%
8/15/2026Jupiter Topco LLC7,900$201K0.0%N/A0.013%
8/15/2026J. Goldman & Co LP68,232$1.73M0.0%N/A0.108%
8/14/2026Legal & General Group Plc20,023$508K0.0%N/A0.032%
8/14/2026The Manufacturers Life Insurance Company8,032$204K0.0%N/A0.013%
8/12/2026Quantbot Technologies LP1,928$49K0.0%N/A0.003%
8/10/2026DCF Advisers LLC28,184$715K0.1%N/A0.045%
8/7/2026BlackRock Inc.2,686,225$68.18M0.0%N/A4.255%
8/7/2026Deutsche Bank AG28,881$733K0.0%N/A0.046%
8/6/2026Bank of New York Mellon Corp70,477$1.79M0.0%N/A0.112%
8/3/2026Walleye Capital LLC209,050$5.31M0.0%N/A0.331%
5/19/2026Bank of America Corp DE388,347$7.59M0.0%+723.5%0.615%
5/18/2026Exome Asset Management LLC80,730$1.58M0.8%N/A0.128%
5/16/2026Quantinno Capital Management LP21,126$413K0.0%N/A0.033%
5/14/2026Sei Investments Co.12,386$242K0.0%N/A0.022%
5/14/2026Walleye Capital LLC125,232$2.45M0.0%N/A0.218%
5/8/2026PNC Financial Services Group Inc.4,767$93K0.0%-18.1%0.008%
5/7/2026SEB Asset Management AB163,860$3.20M0.0%N/A0.286%
5/6/2026Jennison Associates LLC250,000$4.89M0.0%N/A0.436%
5/5/2026Bank of New York Mellon Corp60,864$1.19M0.0%+17.5%0.106%
4/24/2026iA Global Asset Management Inc.215,830$4.22M0.1%N/A0.376%
2/19/2026Invesco Ltd.187,968$6.83M0.0%+28.9%0.350%
2/18/2026XTX Topco Ltd12,183$442K0.0%N/A0.023%
2/18/2026VARCOV Co.7,335$266K0.1%N/A0.014%
2/18/2026Voloridge Investment Management LLC133,439$4.85M0.0%N/A0.249%
2/18/2026Virtus Investment Advisers LLC6,554$238K0.1%N/A0.012%
2/18/2026Superstring Capital Management LP83,353$3.03M1.6%-13.8%0.155%
2/18/2026Millennium Management LLC49,160$1.79M0.0%-31.6%0.092%
2/18/2026Janus Henderson Group PLC7,900$287K0.0%N/A0.015%
2/18/2026EcoR1 Capital LLC789,500$28.67M1.3%N/A1.471%
2/18/2026Eversept Partners LP121,016$4.39M0.2%-23.8%0.225%
2/18/2026Balyasny Asset Management L.P.193,153$7.01M0.0%N/A0.360%
2/17/2026Schonfeld Strategic Advisors LLC9,127$331K0.0%N/A0.017%
2/17/2026AQR Capital Management LLC78,220$2.84M0.0%+218.2%0.146%
2/17/2026NEA Management Company LLC3,523,219$127.93M6.5%+28.9%6.563%
2/17/2026ArrowMark Colorado Holdings LLC751,161$27.28M0.6%-8.9%1.399%
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2/17/2026Price T Rowe Associates Inc. MD369,248$13.41M0.0%-1.3%0.688%
2/17/2026Rock Springs Capital Management LP502,077$18.23M0.9%-13.5%0.935%
2/17/2026California State Teachers Retirement System15,701$570K0.0%+1,271.3%0.029%
2/17/2026State of Wisconsin Investment Board10,221$371K0.0%N/A0.019%
2/17/2026Polar Capital Holdings Plc1,057,609$38.40M0.1%N/A1.970%
2/16/2026Squarepoint Ops LLC15,541$564K0.0%N/A0.029%
2/16/2026Mariner LLC7,676$279K0.0%N/A0.014%
2/16/2026NEXTBio Capital Management LP321,983$11.69M6.9%N/A0.600%
2/16/2026Barclays PLC34,377$1.25M0.0%+50.3%0.064%
2/13/2026Marshall Wace LLP7,100$258K0.0%N/A0.013%
2/13/2026The Manufacturers Life Insurance Company 6,256$227K0.0%N/A0.012%
2/13/2026Pivotal bioVenture Partners Investment Advisor LLC591,991$21.50M8.3%-24.0%1.103%
2/13/2026Vivo Capital LLC853,495$30.99M2.0%-27.9%1.590%
2/13/2026Schroder Investment Management Group50,636$1.85M0.0%-55.0%0.094%
2/13/2026Charles Schwab Investment Management Inc.213,193$7.74M0.0%+19.5%0.397%
2/13/2026State Street Corp438,294$15.91M0.0%+16.1%0.816%
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC8,400$305K0.0%N/A0.016%
2/13/2026Wells Fargo & Company MN21,151$768K0.0%+69.8%0.039%
2/12/2026SR One Capital Management LP5,037,854$182.92M25.9%+2.6%9.385%
2/12/2026Federated Hermes Inc.2,715,578$98.60M0.2%+45.9%5.059%
2/12/2026Skandinaviska Enskilda Banken AB publ 163,860$5.95M0.0%N/A0.305%
2/12/2026Alps Advisors Inc.44,077$1.60M0.0%+119.9%0.082%
2/12/2026Swiss National Bank31,600$1.15M0.0%N/A0.059%
2/12/2026Nuveen LLC50,850$1.85M0.0%+147.8%0.095%
2/11/2026Deutsche Bank AG12,781$464K0.0%+4.5%0.024%
2/11/2026Los Angeles Capital Management LLC14,447$525K0.0%N/A0.027%
2/10/2026Goldman Sachs Group Inc.130,698$4.75M0.0%N/A0.243%
2/10/2026Intech Investment Management LLC8,863$322K0.0%N/A0.017%
2/9/2026Geode Capital Management LLC588,393$21.37M0.0%+25.2%1.096%
2/6/2026ProShare Advisors LLC5,820$211K0.0%N/A0.011%
1/29/2026UBS Group AG69,495$2.52M0.0%+95.8%0.129%
1/29/2026Vanguard Group Inc.1,453,065$52.76M0.0%+25.0%2.707%
1/29/2026China Universal Asset Management Co. Ltd.13,314$483K0.0%N/A0.025%
1/27/2026GF Fund Management CO. LTD.1,054$38K0.0%N/A0.002%
1/26/2026Mirae Asset Global Investments Co. Ltd.2,608$95K0.0%N/A0.005%
1/26/2026CWM LLC2,178$79K0.0%+48.3%0.004%
1/1/2026JPMorgan Chase & Co.6,548$145K0.0%-14.7%0.012%
11/17/2025Quarry LP1,134$25K0.0%+34.5%0.002%
11/17/2025Millennium Management LLC71,850$1.60M0.0%N/A0.134%
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.7,461$166K0.0%-16.0%0.014%
11/17/2025Bank of America Corp DE14,809$329K0.0%+5.8%0.028%
11/17/2025ArrowMark Colorado Holdings LLC824,668$18.31M0.3%-24.6%1.536%
11/17/2025Alliancebernstein L.P.18,350$407K0.0%+12.2%0.034%
11/14/2025Creative Planning11,882$264K0.0%N/A0.022%
11/14/2025Two Sigma Investments LP20,382$452K0.0%+3.9%0.048%
11/14/2025Wellington Management Group LLP857,524$19.04M0.0%-2.4%2.036%
11/13/2025Invesco Ltd.145,796$3.24M0.0%N/A0.346%
11/13/2025UBS Group AG35,492$788K0.0%+46.3%0.084%
11/13/2025BNP Paribas Financial Markets3,146$70K0.0%+120.0%0.007%
11/13/2025Russell Investments Group Ltd.1,345$30K0.0%N/A0.003%
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11/13/2025Schroder Investment Management Group112,612$2.32M0.0%-27.3%0.267%
11/7/2025Vanguard Group Inc.1,162,758$25.81M0.0%+17.2%2.761%
11/7/2025JPMorgan Chase & Co.6,548$145K0.0%-14.7%0.016%
11/7/2025PNC Financial Services Group Inc.5,843$130K0.0%-36.3%0.014%
11/6/2025Rhumbline Advisers21,214$471K0.0%+7.6%0.050%
11/5/2025Alps Advisors Inc.20,042$445K0.0%-11.1%0.048%
8/15/2025Bank of America Corp DE13,991$136K0.0%+32.3%0.033%
8/14/2025Sei Investments Co.12,142$118K0.0%N/A0.029%
8/14/2025Federated Hermes Inc.1,861,838$18.04M0.0%+60.8%4.451%
8/13/2025Schroder Investment Management Group154,916$1.48M0.0%-5.6%0.370%


ZBIO Institutional Ownership - Frequently Asked Questions

During the previous two years, 80 institutional investors and hedge funds held shares of Zenas BioPharma. The most heavily invested institutionals were SR One Capital Management LP ($182.92M), NEA Management Company LLC ($127.93M), Federated Hermes Inc. ($98.60M), BlackRock Inc. ($68.18M), Vanguard Group Inc. ($52.76M), Wellington Management Group LLP ($40.45M), and Polar Capital Holdings Plc ($38.40M).Learn more on Zenas BioPharma's institutional investors.

Of the 70 institutional investors that purchased Zenas BioPharma's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($2.69M), Bank of America Corp DE ($1.58M), Federated Hermes Inc. ($1.56M), Polar Capital Holdings Plc ($1.06M), NEA Management Company LLC ($789.50K), EcoR1 Capital LLC ($789.50K), and Vanguard Group Inc. ($460.85K).

Institutional investors have bought a total of 11,924,809 shares in the last 24 months. This purchase volume represents approximately $353.89M in transactions.

Of the 14 institutional investors that sold Zenas BioPharma's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: ArrowMark Colorado Holdings LLC ($343.18K), Vivo Capital LLC ($329.77K), Pivotal bioVenture Partners Investment Advisor LLC ($187.05K), Schroder Investment Management Group ($104.28K), Rock Springs Capital Management LP ($78.60K), Eversept Partners LP ($37.73K), and Millennium Management LLC ($22.69K).

Institutional investors have sold a total of 1,153,633 shares in the last 24 months. This volume of shares sold represents approximately $37.03M in transactions.


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Institutional ownership data for NASDAQ:ZBIO is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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