89bio, Inc.

NasdaqGM:ETNB Stock Report

Market Cap: US$2.3b

This company has been acquired

The company may no longer be operating, as it has been acquired. Find out why through their latest events.

89bio Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGM:ETNB Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
29 Sep 25BuyUS$0Adage Capital Management, L.P.Company6,950,000US$14.99
04 Sep 25SellUS$1,413,716Adage Capital Management, L.P.Company152,413US$9.30
30 Jan 25BuyUS$49,999,994RA Capital Management, L.P.Company5,714,285US$8.75
22 Jan 25BuyUS$99,850Charles McWherterIndividual15,000US$6.71

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of ETNB?
Owner TypeNumber of SharesOwnership Percentage
Individual Insiders1,079,2310.694%
General Public2,236,0551.44%
Hedge Funds23,307,58715%
VC/PE Firms29,389,68318.9%
Institutions99,554,71564%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 46.9%.

Top Shareholders

Top 25 shareholders own 80.66% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
12.8%
RA Capital Management, L.P.
19,889,683US$295.2m0%3.13%
9.13%
Suvretta Capital Management, LLC
14,210,000US$210.9m-0.87%6.01%
6.79%
BlackRock, Inc.
10,569,355US$156.8m4.9%no data
6.11%
Deep Track Capital, LP
9,500,000US$141.0m1.97%2.7%
5.85%
Adage Capital Management, L.P.
9,097,587US$135.0m362%0.21%
5.3%
The Vanguard Group, Inc.
8,242,154US$122.3m15.1%no data
4.34%
Avoro Capital Advisors LLC
6,750,000US$100.2m6.3%1.26%
3.46%
Janus Henderson Group plc
5,378,185US$79.8m-74.1%0.03%
2.73%
State Street Global Advisors, Inc.
4,249,957US$63.1m5.45%no data
2.59%
Pictet Asset Management Limited
4,035,390US$59.9m-4.03%0.04%
2.47%
Citadel Advisors LLC
3,836,892US$56.9m-24.6%0.05%
2.17%
Westfield Capital Management Company, L.P.
3,370,817US$50.0m-13.5%0.19%
2%
Geode Capital Management, LLC
3,111,299US$46.2m7.36%no data
1.97%
Holocene Advisors, LP
3,065,387US$45.5m0%0.1%
1.92%
Emerald Advisers, LLC
2,990,183US$44.4m13.5%0.84%
1.59%
Polar Capital Holdings Plc
2,475,000US$36.7m-1%0.1%
1.46%
Point72 Asset Management, L.P.
2,274,151US$33.7m0%0.06%
1.39%
Morgan Stanley
2,164,318US$32.1m256%no data
1.31%
Silverarc Capital Management, LLC
2,037,087US$30.2m34.9%4.85%
1.26%
RTW Investments, LP
1,967,527US$29.2m0%0.31%
0.99%
Redmile Group, LLC
1,545,208US$22.9m-18.1%1.59%
0.79%
Woodline Partners LP
1,222,661US$18.1m74.5%0.09%
0.76%
Dimensional Fund Advisors LP
1,183,223US$17.6m101%no data
0.75%
Bank of America Corporation
1,164,215US$17.3m66.1%no data
0.74%
University of Wisconsin Foundation, Inc.
1,153,357US$17.1m0%16.75%

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2025/10/29 04:55
End of Day Share Price 2025/10/29 00:00
Earnings2025/06/30
Annual Earnings2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

89bio, Inc. is covered by 8 analysts. 7 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Geoffrey MeachamCitigroup Inc
Liisa BaykoEvercore ISI
null nullEvercore ISI