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bluebird bio Ownership

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

Recent Insider Transactions

BMV:BLUE * Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
03 Mar 25	SellMex$73,792	Andrew Obenshain	Individual	921	Mex$80.12
03 Mar 25	SellMex$40,061	Thomas Klima	Individual	500	Mex$80.12
03 Mar 25	SellMex$46,791	Richard Colvin	Individual	584	Mex$80.12
03 Feb 25	SellMex$9,677	Richard Colvin	Individual	64	Mex$151.20
03 Feb 25	SellMex$13,003	Andrew Obenshain	Individual	86	Mex$151.20
03 Feb 25	SellMex$35,986	Joseph Vittiglio	Individual	238	Mex$151.20
03 Feb 25	SellMex$18,447	Thomas Klima	Individual	122	Mex$151.20
06 Jan 25	SellMex$26,259	Andrew Obenshain	Individual	140	Mex$187.57
06 Jan 25	SellMex$3,564	Richard Colvin	Individual	19	Mex$187.57
10 Dec 24	SellMex$8,214	Andrew Obenshain	Individual	48.55	Mex$169.19
10 Dec 24	SellMex$23,890	Richard Colvin	Individual	141.2	Mex$169.19

Insider Trading Volume

Insider Buying: BLUE * insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of BLUE *?
Owner Type	Number of Shares	Ownership Percentage
Public Companies	21,000	0.214%
Individual Insiders	45,444	0.464%
Institutions	3,408,106	34.8%
General Public	6,317,908	64.5%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 35.28% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
7.13%	BlackRock, Inc.	697,879	Mex$67.0m	-1.52%	no data
5.29%	The Vanguard Group, Inc.	518,238	Mex$49.8m	-1.37%	no data
4.08%	Tang Capital Management, LLC	400,000	Mex$38.4m	0%	0.1%
2.91%	CM-CIC Asset Management SA	285,000	Mex$27.4m	0%	0.01%
2.51%	Geode Capital Management, LLC	246,117	Mex$23.6m	5.4%	no data
2%	State Street Global Advisors, Inc.	196,179	Mex$18.8m	-0.88%	no data
1.68%	Acatis Anlageberatung fur Investmentfonds GmbH	165,000	Mex$15.8m	0%	0.06%
1.13%	Equitec Group, LLC, Asset Management Arm	110,714	Mex$10.6m	0%	1.8%
0.89%	FMR LLC	87,642	Mex$8.4m	84%	no data
0.83%	Quinn Opportunity Partners LLC	81,429	Mex$7.8m	0%	0.03%
0.82%	Northern Trust Global Investments	80,401	Mex$7.7m	-1.59%	no data
0.81%	Lion Point Capital, LP	78,912	Mex$7.6m	0%	2.49%
0.61%	Black Maple Capital Management LP	60,197	Mex$5.8m	0%	0.23%
0.58%	Susquehanna International Group, LLP, Asset Management Arm	56,588	Mex$5.4m	0%	no data
0.54%	Simplex Trading, LLC, Asset Management Arm	53,134	Mex$5.1m	0%	0.01%
0.53%	Murchinson Ltd.	52,000	Mex$5.0m	0%	0.05%
0.53%	UBS Asset Management AG	51,804	Mex$5.0m	-51.3%	no data
0.49%	Goldman Sachs Asset Management, L.P.	48,362	Mex$4.6m	47.8%	no data
0.33%	BNY Asset Management	32,759	Mex$3.1m	12.7%	no data
0.31%	CSS LLC/IL, Asset Management Arm	30,772	Mex$3.0m	0%	0.03%
0.29%	Morgan Stanley, Investment Banking and Brokerage Investments	28,723	Mex$2.8m	-22.4%	no data
0.26%	Summit X	25,045	Mex$2.4m	-33.5%	0.03%
0.24%	Charles Schwab Investment Management, Inc.	23,235	Mex$2.2m	-16%	no data
0.23%	Nick Leschly	22,850	Mex$2.2m	0.41%	no data
0.23%	JPMorgan Chase & Co, Brokerage and Securities Investments	22,253	Mex$2.1m	-4.8%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/05/30 03:09
End of Day Share Price	2025/04/21 00:00
Earnings	2025/03/31
Annual Earnings	2024/12/31

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.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* 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

bluebird bio, Inc. is covered by 21 analysts. 4 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Zhiqiang Shu	Berenberg
Matthew Luchini	BMO Capital Markets Equity Research
Dane Leone	BTIG