Bluebird bio Inc (BLUE) Ownership

3.84 ↑0.00 (0.00%)
As of December 31, 1969, 7:00pm EST.

Institutional Ownership

Granahan Investment Management Inc.. is the biggest individual institutional holder of Bluebird bio Inc (BLUE), owning a total of 7.7 million shares. Combined, the top 68 institutional holders of BLUE own 72.40% of the company with a total of 79.8 million shares.

In the latest ownership report on December 31st 2024, the top 68 institutional holders increased their combined ownership of BLUE by 116 thousand shares. 10 institutions bought 285,481 total additional shares and increased their ownership by an average of 235.30%. However 8 institutions sold 169,130 total shares and decreased their ownership by an average of 14.09%.

Overall this is a positive sign as the number of shares owned by the top 20 institutional holders of Bluebird bio increased by a net total of 116,351 in the latest quarter.

Institution Ownership Chart

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Latest Institutional Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
BlackRock Inc7.239%-8.226%708,669-63,5192024-12-31
Vanguard Group Inc5.367%0.327%525,4141,7142024-12-31
Geode Capital Management, LLC2.385%-0.273%233,514-6382024-12-31
State Street Corp2.022%3.032%197,9215,8252024-12-31
UBS Group AG1.086%2,045.350%106,302101,3472024-12-31
Northern Trust Corp0.835%6.390%81,7004,9072024-12-31
Avidity Partners Management LP0.833%-0.003%81,555-22024-12-31
Lion Point Capital, LP0.806%-0.001%78,912-12024-12-31
Partner Fund Management LP0.774%0.000%75,75875,7582024-12-31
Goldman Sachs Group Inc0.634%54.044%62,01821,7582024-12-31
Bank of America Corp0.547%-24.139%53,548-17,0392024-12-31
JPMorgan Chase & Co0.518%-18.429%50,726-11,4602024-12-31
Masters Capital Management LLC0.498%0.000%48,75002024-12-31
FMR Inc0.487%-61.621%47,628-76,4702024-12-31
Jane Street Group LLC0.412%210.840%40,28827,3272024-12-31
Summit X, LLC0.385%32.587%37,6449,2522024-12-31
Morgan Stanley - Brokerage Accounts0.383%0.000%37,47137,4712024-12-31
Bank of New York Mellon Corp0.297%0.421%29,0731222024-12-31
Charles Schwab Investment Management Inc0.282%-0.004%27,652-12024-12-31

Top Institutions

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Granahan Investment Management Inc..4.001%-4.531%7,711,669-366,0282024-03-31
Ameriprise Financial Inc3.296%-0.009%6,391,637-5612024-06-30
Pictet Asset Manangement SA2.951%10.486%5,687,334539,7812023-12-31
NORGES BANK2.073%10,586.000%3,995,6003,958,2092023-12-31
State Street Corporation1.779%-75.276%3,428,135-10,437,5842024-03-31
Ghisallo Capital Management LLC1.634%0.000%3,150,0003,150,0002023-12-31
TANG CAPITAL MANAGEMENT LLC1.297%-41.627%2,500,000-1,782,8272024-03-31
Baker Bros Advisors LP1.297%0.000%2,499,71502023-09-30
Hudson Bay Capital Management LP1.133%233.349%2,183,4371,528,4372023-12-31
Deerfield Management Co2.043%0.000%2,175,0002,175,0002023-03-31
Vestal Point Capital LP1.116%0.000%2,150,0002,150,0002023-12-31
Farallon Capital Management, L.L.C.1.038%0.000%2,000,0002,000,0002023-12-31
Jacobs Levy Equity Management, Inc.0.956%-11.924%1,841,584-249,3262023-09-30
Credit Suisse First Boston (CSFB)0.926%-3.625%1,784,680-67,1282023-09-30
Millennium Management LLC0.827%-68.741%1,608,793-3,537,8602024-09-30
Rafferty Asset Management, LLC0.774%-18.833%1,491,411-346,0512023-09-30
Balyasny Asset Management LLC1.362%53.042%1,450,239502,6322023-03-31
Marshall Wace Asset Management Ltd1.303%131.264%1,340,806761,0332022-09-30
Citigroup Inc1.240%173.079%1,319,168836,0972023-03-31
Contrarius Investment Management Ltd0.679%0.000%1,308,0021,308,0022023-09-30
ExodusPoint Capital Management, LP0.667%0.000%1,296,6681,296,6682024-09-30
Alyeska Investment Group, L.P.0.652%0.000%1,255,9371,255,9372024-03-31
Deutsche Bank AG0.604%60.690%1,173,570443,2402024-06-30
Federated Hermes Inc1.396%26.235%1,157,322240,5192022-06-30
JANE STREET GROUP, LLC0.567%221.636%1,097,978756,6052024-06-30
Renaissance Technologies Corp0.544%33.691%1,058,172266,6682024-09-30
VOLORIDGE INVESTMENT MANAGEMENT, LLC0.989%-15.194%1,052,249-188,5242023-03-31
Bleichroeder LP0.535%0.000%1,037,37902024-06-30
Woodline Partners LP0.500%-0.597%969,336-5,8262024-06-30
Squarepoint Ops LLC0.887%110.647%943,444495,5662022-12-31
Two Sigma Investments LLC0.468%-67.269%907,977-1,866,0652024-06-30
Point72 Asset Management, L.P.0.832%-26.686%885,700-322,3892023-03-31
Walleye Trading Advisors, LLC0.782%0.000%836,760836,7602023-06-30
Ikarian Capital, LLC0.764%75.655%812,628350,0002022-12-31
Amvescap Plc.0.762%-46.609%810,835-707,8442022-12-31
HRT FINANCIAL LLC0.963%0.000%798,048798,0482022-06-30
Citadel Advisors Llc0.716%78.204%782,375343,3412023-09-30
Two Sigma Advisers, LLC0.367%-15.729%713,100-133,1002024-09-30
BlackRock Inc7.239%-8.226%708,669-63,5192024-12-31
AQR Capital Management LLC0.349%-49.177%678,248-656,2712024-09-30
Palo Alto Investors, LLC0.311%-86.959%604,260-4,029,0912024-09-30
Dimensional Fund Advisors, Inc.0.311%-19.300%603,874-144,4252024-09-30
Susquehanna International Group, LLP0.279%-39.949%541,620-360,3132024-09-30
Vanguard Group Inc5.367%0.327%525,4141,7142024-12-31
Nuveen Asset Management, LLC0.211%0.000%409,85702024-09-30
Geode Capital Management, LLC2.385%-0.273%233,514-6382024-12-31
Birchview Capital, LP0.109%-32.134%211,200-100,0002024-09-30
SIMPLEX TRADING, LLC0.105%-34.905%203,502-109,1232024-09-30
State Street Corp2.022%3.032%197,9215,8252024-12-31
Group One Trading, LP0.097%-41.357%188,628-133,0272024-09-30
Integrated Wealth Concepts LLC0.081%6.100%156,5469,0002024-09-30
UBS Group AG1.086%2,045.350%106,302101,3472024-12-31
Northern Trust Corp0.835%6.390%81,7004,9072024-12-31
Avidity Partners Management LP0.833%-0.003%81,555-22024-12-31
Lion Point Capital, LP0.806%-0.001%78,912-12024-12-31
Partner Fund Management LP0.774%0.000%75,75875,7582024-12-31
ING Investment Management LLC0.034%0.000%65,89702024-09-30
Goldman Sachs Group Inc0.634%54.044%62,01821,7582024-12-31
Bank of America Corp0.547%-24.139%53,548-17,0392024-12-31
JPMorgan Chase & Co0.518%-18.429%50,726-11,4602024-12-31
Masters Capital Management LLC0.498%0.000%48,75002024-12-31
FMR Inc0.487%-61.621%47,628-76,4702024-12-31
Jane Street Group LLC0.412%210.840%40,28827,3272024-12-31
Summit X, LLC0.385%32.587%37,6449,2522024-12-31
Morgan Stanley - Brokerage Accounts0.383%0.000%37,47137,4712024-12-31
Prudential Investment Management Inc0.018%189.750%34,20522,4002024-09-30
Bank of New York Mellon Corp0.297%0.421%29,0731222024-12-31
Charles Schwab Investment Management Inc0.282%-0.004%27,652-12024-12-31

Mutual Fund Ownership

SPDR® S&P Biotech ETF is the biggest individual fund holder of Bluebird bio Inc (BLUE), owning a total of 12.3 million shares. Combined, the top 77 mutual fund holders of BLUE own 53.53% of the company with a total of 64 million shares.

In the latest ownership report on March 31st 2025, the top 77 fund holders increased their combined ownership of BLUE by 17 thousand shares. 3 funds bought 21,131 total additional shares and increased their ownership by an average of 0.86%. However 3 funds sold 4,121 total shares and decreased their ownership by an average of 3.18%.

Overall this is a positive sign as the number of shares owned by the top 20 mutual funds holding Bluebird bio increased by a net total of 17,010 in the latest report.

Mutual Funds Chart

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Latest Mutual Fund Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Vanguard Total Stock Mkt Idx Inv2.994%0.000%293,12202025-03-31
iShares Russell 2000 ETF2.625%-0.849%256,980-2,2002025-03-31
Vanguard Institutional Extnd Mkt Idx Tr1.630%0.000%159,56902025-03-31
iShares Russell 2000 Value ETF0.905%0.000%88,63502025-03-31
Fidelity Enhanced Small Cap ETF0.597%0.000%58,39302025-03-31
State St Russell Sm/Mid Cp® Indx NL Cl C0.580%0.000%56,77402025-03-31
State St Russell Sm/Mid Cp® Indx SL Cl I0.580%0.000%56,77402025-03-31
Vanguard Russell 2000 ETF0.458%2.283%44,8041,0002025-03-31
State St Russell Sm Cap® Indx SL Cl I0.431%0.000%42,22402025-03-31
NT R2000 Index Fund - NL0.247%-3.336%24,138-8332025-03-31
Schwab Small Cap Index0.237%0.000%23,23502025-03-31
Extended Equity Market Fund K0.227%0.307%22,213682025-03-31
iShares Micro-Cap ETF0.222%0.000%21,71902025-03-31
Xtrackers Russell 2000 ETF 1C0.205%0.000%20,06320,0632025-03-31
NT R2000 Index Fund - DC - NL - 20.197%-5.341%19,283-1,0882025-03-31
iShares Russell 2000 Small-Cap Idx Instl0.190%0.000%18,59902025-03-31

Top Mutual Funds

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
SPDR® S&P Biotech ETF6.361%1.904%12,261,062229,0802024-02-29
Vanguard US Total Market Shares ETF2.994%0.000%5,862,46412024-09-30
Columbia Acorn Inst2.768%0.000%5,365,98302024-07-31
Vanguard Instl Ttl Stck Mkt Idx Tr3.010%20.953%3,221,729558,0992023-03-31
Pictet Biopharmaceutical Mother1.366%67.090%2,632,2001,056,8792023-10-13
Fidelity Select Pharmaceuticals Port1.145%0.000%2,226,00002024-09-30
M&G (ACS) Granahan US Sm Cp Gr GBPZ1AAcc0.932%4.998%1,808,16586,0722024-01-31
JNL Multi-Manager Small Cap Growth A0.927%-15.164%1,787,512-319,4982024-03-31
CS (Lux) Digital Health Equity SB USD0.778%0.000%1,500,00002023-11-30
Vanguard Extended Market Index Investor1.385%-0.022%1,481,097-3192023-08-31
iShares Biotechnology ETF0.647%0.000%1,258,67002024-11-30
Granahan US SMID Select I GBP Acc0.629%0.638%1,212,6167,6842024-02-29
Direxion Daily S&P Biotech Bull 3X ETF0.582%0.000%1,121,85902024-02-29
Contrarius Global Equity Investor0.570%-7.503%1,098,339-89,0912023-12-31
Fidelity® Small Cap Index0.532%2.050%1,025,65820,6082023-10-31
Victory Small Cap Stock0.528%8.970%1,018,23683,8142024-03-31
Wanger Acorn0.525%0.000%1,017,47102024-07-31
Granahan Inv Mgt Sm-Cap Core Gr0.528%8.884%1,017,44083,0182024-03-31
Granahan SMID Select0.521%-16.249%1,003,239-194,6482024-03-31
Multi-Manager Small Cap Eq Strat Inst0.455%0.000%883,02202024-08-31
DWS Global Small Cap S0.411%0.000%796,49102024-07-31
TIAA-CREF Quant Small-Cap Equity Instl0.658%-9.612%699,840-74,4202023-01-31
Fidelity® Extended Market Index0.330%0.000%635,50102023-11-30
Dimensional US Targeted Value ETF0.304%0.000%586,70102023-12-29
Federated Hermes MDT SCC Institutional0.688%-46.680%570,481-499,4332022-09-30
Federated Hermes MDT Small Cap Core IS0.688%-46.680%570,481-499,4332022-09-30
DFA US Small Cap I0.530%0.000%563,44102023-04-30
DFA US Micro Cap I0.494%-1.240%525,464-6,5972023-03-31
LVIP FranklinTempletonMltFctSMIDCapEqStd0.464%1.895%493,7659,1832023-03-31
LVIP SSgA Small/Mid Cap 200 Std0.456%-0.104%484,582-5022022-12-31
JPM Thematics Genetic Thrps C2 Acc USD0.237%-6.775%461,180-33,5132024-11-30
JPMorgan Small Cap Value I0.238%0.000%459,20302024-03-31
Granahan SC Advantage0.236%0.000%457,02802024-03-31
BlackRock Extended Equity Market K0.231%-0.043%449,019-1912024-09-30
Global X Genomics & Biotechnology ETF0.404%0.000%430,27302023-06-30
NVIT Multi-Manager Small Company I0.203%16.241%392,93454,9002024-08-31
Galileo - Biotech Innovation Fund S USD0.199%0.000%389,27302024-09-30
State St Russell Sm Cap® Indx NL Cl C0.366%-3.809%388,916-15,4002023-06-30
Northern Trust Russell 2000 Value Index0.197%0.000%383,21802024-09-30
NT R2000 Value Index Fund - L0.197%0.000%383,21802024-09-30
L&G Pharma Breakthrough ETF0.356%0.000%378,99302023-05-31
Invesco DWA Healthcare Momentum ETF0.353%0.000%375,27302023-03-31
DFA US Core Equity 2 I0.306%0.000%325,47302023-05-31
BlackRock Advantage Small Cap Core Instl0.303%-2.988%311,466-9,5932022-12-31
Vanguard Total Stock Mkt Idx Inv2.994%0.000%293,12202025-03-31
Fidelity Series Total Market Index0.132%0.000%257,12102024-11-30
iShares Russell 2000 ETF2.625%-0.849%256,980-2,2002025-03-31
Nuveen Small Cap Blend Idx R60.129%0.000%251,27102024-11-30
EQ/2000 Managed Volatility IB0.129%0.000%250,40302024-11-30
Fidelity Nasdaq Composite Index0.108%-1.774%209,312-3,7802024-11-30
AQR Small Cap Multi-Style I0.105%104.520%205,021104,7762024-09-30
Northern Trust Extended Eq Market Idx0.103%0.000%200,99002024-09-30
Bridgeway Ultra-Small Company Market0.103%-21.569%200,000-55,0002024-09-30
Russell Personalized DI All Cap SMA0.098%0.234%189,7934432024-09-30
Fidelity Small Cap Value Index0.096%0.000%187,52202024-11-30
EQ/Small Company Index IB0.089%0.000%172,80002024-11-30
ACATIS Datini Valueflex Fonds A1.685%0.000%165,00002025-02-28
Vanguard Institutional Extnd Mkt Idx Tr1.630%0.000%159,56902025-03-31
Fidelity Small Cap Index0.964%-1.838%94,359-1,7672025-01-31
iShares Russell 2000 Value ETF0.905%0.000%88,63502025-03-31
Fidelity Enhanced Small Cap ETF0.597%0.000%58,39302025-03-31
State St Russell Sm/Mid Cp® Indx NL Cl C0.580%0.000%56,77402025-03-31
State St Russell Sm/Mid Cp® Indx SL Cl I0.580%0.000%56,77402025-03-31
Fidelity Extended Market Index0.536%-0.633%52,421-3342025-02-28
Vanguard Russell 2000 ETF0.458%2.283%44,8041,0002025-03-31
State St Russell Sm Cap® Indx SL Cl I0.431%0.000%42,22402025-03-31
NT R2000 Value Index Fund - NL0.258%13.350%25,2422,9732024-12-31
NT R2000 Index Fund - NL0.247%-3.336%24,138-8332025-03-31
Schwab Small Cap Index0.237%0.000%23,23502025-03-31
JPM Thematics Genetic Thrps C2 dist USD0.237%0.000%23,05902025-01-31
Extended Equity Market Fund K0.227%0.307%22,213682025-03-31
iShares Micro-Cap ETF0.222%0.000%21,71902025-03-31
SPDR® Russell 2000 US Small Cap ETF0.205%-1.277%20,094-2602025-02-28
Xtrackers Russell 2000 ETF 1C0.205%0.000%20,06320,0632025-03-31
Fidelity Total Market Index0.197%-0.078%19,306-152025-02-28
NT R2000 Index Fund - DC - NL - 20.197%-5.341%19,283-1,0882025-03-31
iShares Russell 2000 Small-Cap Idx Instl0.190%0.000%18,59902025-03-31

Discussions

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Modok4/9/25 01:53pm

$BLUE it's just a matter of time and patience...

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easymoneyFAM9/20/24 04:54am

$BLUE Bears always win...
Bulls have to be forever bagholders....

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