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BIIB Stock Ownership Breakdown

NASDAQ : BIIB

Biogen Inc.

$117.80
-0.815-0.69%
Open: 10:24 AM
70.86
B+ESG ScoreESG Rating

BIIB Stock Outstanding Shares

Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.

ShortableYes
OptionableYes
Short Percent Of Outstanding Shares2.28
Short Percent Of Float2.58
Shares Outstanding146.38M
Shares Float146.00M
Shares Short3.34M
Short Ratio1.86
2.58%
Short % of Float
2.28%
Short % of Shares Outstanding

Market Insider BIIB

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary
0.21% Percentage of Shares held by All Insiders
94.4% Percentage of Shares held by All Institutions
94.59% Percentage of Float held by Institutions
1318
Number of Institutions Holding Shares

Institutional Ownership

About 94.4% of BIIB shares are held by financial institutions. PARNASSUS INVESTMENTS, LLC is the top corporate investor, holding 360.74K shares valued at $77.79M. A 0.25% stake in Biogen Inc. is owned by the company. NUVEEN ASSET MANAGEMENT, LLC owns 347.12K shares valued at $74.85M, which translates its holding of 0.24% of the stake in the company.

DateHolder% StakeShares HeldTotal Value ($)Shares% Change in Portfolio
Mar 31, 2024PARNASSUS INVESTMENTS, LLC0.25%360.74K77.79M00
Mar 31, 2024NUVEEN ASSET MANAGEMENT, LLC0.24%347.12K74.85M-100.03K-22.37%
Mar 31, 2024FIRST TRUST ADVISORS LP0.23%334.3K72.08M-643.01K-65.79%
Mar 31, 2024NATIONAL PENSION SERVICE0.22%314.12K67.73M11.8K+3.90%
Mar 31, 2024CREDIT SUISSE AG/0.2%291.73K62.9M-26.7K-8.38%
Mar 31, 2024BNP PARIBAS ARBITRAGE, SNC0.19%281.4K60.68M83.8K+42.41%
Mar 31, 2024RHUMBLINE ADVISERS0.19%278.64K60.08M597+0.21%
Mar 31, 2024BROWN ADVISORY INC0.19%272.88K58.84M101.58K+59.30%
Mar 31, 2024CANDRIAM S.C.A.0.18%267.04K57.58M81.76K+44.13%
Mar 31, 2024BANK OF MONTREAL /CAN/0.16%236.82K58.02M-55.59K-19.01%
Mar 31, 2024ROBECO INSTITUTIONAL ASSET MANAGEMENT B.V.0.16%231.52K49.92M-62.02K-21.13%
Mar 31, 2024WELLS FARGO & COMPANY/MN0.15%221.08K47.67M-10.38K-4.48%
Mar 31, 2024CITIGROUP INC0.15%218.72K47.16M-1.94K-0.88%
Mar 31, 2024ENVESTNET ASSET MANAGEMENT INC0.15%217.74K46.95M-18.71K-7.91%
Mar 31, 2024ALLIANCEBERNSTEIN L.P.0.14%201.89K43.53M-27.92K-12.15%
Mar 31, 2024THRIVENT FINANCIAL FOR LUTHERANS0.14%201.4K43.43M-57.96K-22.35%
Mar 31, 2024WEDGE CAPITAL MANAGEMENT L L P/NC0.13%181.52K39.14M54.04K+42.39%
Mar 31, 2024MITSUBISHI UFJ KOKUSAI ASSET MANAGEMENT CO., LTD.0.12%179.42K38.69M29.99K+20.07%
Mar 31, 2024LEGAL & GENERAL GROUP PLC1.07%1.55M334.41M-16.91K-1.08%
Mar 31, 2024NORTHERN TRUST CORP0.96%1.39M299.38M-106.58K-7.13%
Mar 31, 2024BANK OF NEW YORK MELLON CORP0.95%1.38M296.71M-13.7K-0.99%
Mar 31, 2024UBS ASSET MANAGEMENT AMERICAS INC0.67%972.14K209.62M-42.44K-4.18%
Mar 31, 2024ORBIMED ADVISORS LLC0.62%900.9K194.26M73.3K+8.86%
Mar 31, 2024RENAISSANCE TECHNOLOGIES LLC0.61%884.7K190.77M126.1K+16.62%
Mar 31, 2024BANK OF AMERICA CORP /DE/0.31%443.62K95.66M17.05K+4.00%
Mar 31, 2024SWISS NATIONAL BANK0.3%433.9K93.56M-19K-4.20%
Mar 31, 2024AXA S.A.0.28%407.84K87.94M-42.91K-9.52%
Mar 31, 2024ROYAL BANK OF CANADA0.28%404.86K87.3M30.85K+8.25%
Mar 31, 2024CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM0.28%404.42K87.2M41.21K+11.35%
Mar 31, 2024HSBC HOLDINGS PLC0.28%398.84K85.98M73.23K+22.49%
Mar 31, 2024CAMBER CAPITAL MANAGEMENT LP0.28%400K86.25M400K+100.00%
Mar 31, 2024FRANKLIN RESOURCES INC0.27%385.58K83.14M-112.77K-22.63%
Mar 31, 2024CHARLES SCHWAB INVESTMENT MANAGEMENT INC0.59%858.81K185.18M9.81K+1.15%
Mar 31, 2024VANGUARD GROUP INC11.45%16.57M3.57B2.16M+15.01%
Mar 31, 2024PRIMECAP MANAGEMENT CO/CA/11.17%16.22M3.5B-43.77K-0.27%
Mar 31, 2024BLACKROCK INC.9.78%14.14M3.05B-101.67K-0.71%
Mar 31, 2024T. ROWE PRICE INVESTMENT MANAGEMENT, INC.3.56%5.17M1.11B-187.36K-3.50%
Mar 31, 2024WELLINGTON MANAGEMENT GROUP LLP3.54%5.12M1.1B-204.25K-3.84%
Mar 31, 2024JPMORGAN CHASE & CO3.24%4.69M1.01B-316.63K-6.32%
Mar 31, 2024GEODE CAPITAL MANAGEMENT, LLC2.36%3.41M733.41M100.36K+3.03%
Mar 31, 2024VAN ECK ASSOCIATES CORP1.2%1.74M374.62M316.14K+22.24%
Mar 31, 2024MORGAN STANLEY1.18%1.7M366.87M123.61K+7.83%
Mar 31, 2024INVESCO LTD.1.15%1.67M359.67M-146.65K-8.08%
Mar 31, 2024PRICE T ROWE ASSOCIATES INC /MD/1.1%1.59M342.77M81.28K+5.39%
Mar 31, 2024BEUTEL, GOODMAN & CO LTD.1.08%1.57M337.63M570.33K+57.29%
Mar 31, 2024AMERIPRISE FINANCIAL INC0.55%798.66K172.3M596.17K+294.43%
Mar 31, 2024BARCLAYS PLC0.37%540.57K116.56M8.31K+1.56%
Mar 31, 2024UBS GROUP AG0.33%475.83K102.6M137.47K+40.63%
Mar 31, 2024ABRDN PLC0.31%455.86K98.3M18.79K+4.30%
Mar 31, 2024AMUNDI0.68%985.8K187.81M-215.9K-17.97%
Mar 31, 2024AMERICAN CENTURY COMPANIES INC0.58%842.47K181.66M-146.21K-14.79%
Mar 31, 2024RA CAPITAL MANAGEMENT, L.P.0.51%740.73K159.72M207.84K+39.00%
Mar 31, 2024FIL LTD0.48%702.41K151.46M45.91K+6.99%
Mar 31, 2024SARISSA CAPITAL MANAGEMENT LP0.44%643K138.65M00
Mar 31, 2024FMR LLC0.43%620.85K133.87M-380.29K-37.99%
Mar 31, 2024ALLIANZ ASSET MANAGEMENT GMBH0.43%620.24K133.74M-98.48K-13.70%
Mar 31, 2024MASSACHUSETTS FINANCIAL SERVICES CO /MA/0.4%574.98K123.98M-5.09K-0.88%
Mar 31, 2024BNP PARIBAS ASSET MANAGEMENT HOLDING S.A.0.39%570.53K123.02M122.1K+27.23%
Mar 31, 2024SUMITOMO MITSUI TRUST HOLDINGS, INC.0.27%386.48K83.34M3.38K+0.88%
Mar 31, 2024SUSQUEHANNA INTERNATIONAL GROUP, LLP0.26%371.5K80.11M-222.7K-37.48%
Mar 31, 2024TD ASSET MANAGEMENT INC0.25%367.24K79.19M-22.75K-5.83%
Mar 31, 2024STATE STREET CORP4.66%6.75M1.45B-198.66K-2.86%
Mar 31, 2024CLEARBRIDGE INVESTMENTS, LLC1.08%1.56M336.74M-117.64K-7.01%
Mar 31, 2024DIMENSIONAL FUND ADVISORS LP0.91%1.32M284.84M-103.67K-7.28%
Mar 31, 2024DEUTSCHE BANK AG\0.73%1.06M228.02M-132.43K-11.13%
Mar 31, 2024PICTET ASSET MANAGEMENT HOLDING SA0.7%1.01M218.92M-243.68K-19.37%
Mar 31, 2024GOLDMAN SACHS GROUP INC0.69%994.37K214.41M-101.46K-9.26%
Dec 31, 2023BNP PARIBAS ASSET MANAGEMENT HOLDING S.A.0.31%448.43K116.04M-212.11K-32.11%
Dec 31, 2023VANGUARD GROUP INC9.94%14.41M3.73B2.22M+18.20%
Dec 31, 2023BLACKROCK INC.9.83%14.25M3.69B272.07K+1.95%
Dec 31, 2023STATE STREET CORP4.79%6.95M1.8B80.01K+1.17%
Dec 31, 2023T. ROWE PRICE INVESTMENT MANAGEMENT, INC.3.7%5.36M1.39B602.34K+12.67%
Dec 31, 2023WELLINGTON MANAGEMENT GROUP LLP3.67%5.32M1.38B5.32M+100.00%
Dec 31, 2023JPMORGAN CHASE & CO3.46%5.01M1.3B25.57K+0.51%
Dec 31, 2023GEODE CAPITAL MANAGEMENT, LLC2.28%3.31M854.14M72.43K+2.24%
Dec 31, 2023INVESCO LTD.1.25%1.81M469.58M633.29K+53.61%
Dec 31, 2023CLEARBRIDGE INVESTMENTS, LLC1.16%1.68M434.55M-143.88K-7.89%
Dec 31, 2023MORGAN STANLEY1.09%1.58M408.28M84.66K+5.67%
Dec 31, 2023LEGAL & GENERAL GROUP PLC1.08%1.57M405.69M228.67K+17.08%
Dec 31, 2023PRICE T ROWE ASSOCIATES INC /MD/1.04%1.51M390.32M344.82K+29.64%
Dec 31, 2023NORTHERN TRUST CORP1.03%1.49M386.85M-148.07K-9.01%
Dec 31, 2023NORGES BANK1.01%1.46M378.73M1.46M+100.00%
Dec 31, 2023DIMENSIONAL FUND ADVISORS LP0.98%1.42M368.68M43.44K+3.15%
Dec 31, 2023VAN ECK ASSOCIATES CORP0.98%1.42M367.76M231.65K+19.47%
Dec 31, 2023BANK OF NEW YORK MELLON CORP0.96%1.39M359.61M-40.43K-2.83%
Dec 31, 20230.87%1.26M325.52M45.48K+3.75%
Dec 31, 2023AMUNDI0.83%1.2M307.44M108.18K+9.89%
Dec 31, 2023DEUTSCHE BANK AG\0.82%1.19M307.91M253.41K+27.06%
Dec 31, 2023GOLDMAN SACHS GROUP INC0.76%1.1M283.57M304.98K+38.56%
Dec 31, 2023UBS ASSET MANAGEMENT AMERICAS INC0.7%1.01M262.54M-50.94K-4.78%
Dec 31, 2023FMR LLC0.69%1M259.07M-359.91K-26.44%
Dec 31, 2023BEUTEL, GOODMAN & CO LTD.0.69%995.46K257.59M-3.82K-0.38%
Dec 31, 2023AMERICAN CENTURY COMPANIES INC0.68%988.68K255.84M89.75K+9.98%
Dec 31, 2023FIRST TRUST ADVISORS LP0.67%977.31K252.9M571.8K+141.01%
Dec 31, 2023CHARLES SCHWAB INVESTMENT MANAGEMENT INC0.59%849K219.7M310+0.04%
Dec 31, 2023ORBIMED ADVISORS LLC0.57%827.6K214.16M270.8K+48.64%
Dec 31, 2023RENAISSANCE TECHNOLOGIES LLC0.52%758.61K196.3M-327.79K-30.17%
Dec 31, 2023ALLIANZ ASSET MANAGEMENT GMBH0.5%718.72K185.98M-53.64K-6.94%
Dec 31, 2023FIL LTD0.45%656.5K169.88M593.16K+936.41%
Dec 31, 2023SARISSA CAPITAL MANAGEMENT LP0.44%643K166.39M00
Dec 31, 2023MASSACHUSETTS FINANCIAL SERVICES CO /MA/0.4%580.07K150.1M133.46K+29.88%
Dec 31, 2023RA CAPITAL MANAGEMENT, L.P.0.37%532.89K137.9M00
Dec 31, 2023BARCLAYS PLC0.37%532.26K137.73M136.58K+34.52%
Dec 31, 2023FRANKLIN RESOURCES INC0.34%498.35K128.96M-130.19K-20.71%
Dec 31, 2023BANK OF AMERICA CORP /DE/0.29%426.57K110.38M72.48K+20.47%
Dec 31, 2023SWISS NATIONAL BANK0.31%452.9K117.2M-12.7K-2.73%
Dec 31, 2023AXA S.A.0.31%450.74K116.64M9.49K+2.15%
Dec 31, 2023PRIMECAP MANAGEMENT CO/CA/11.22%16.26M4.21B251.92K+1.57%
Dec 31, 2023NUVEEN ASSET MANAGEMENT, LLC0.31%447.15K115.71M-135.6K-23.27%
Dec 31, 2023ABRDN PLC0.3%437.08K113.1M307.53K+237.40%
Dec 31, 2023ALYESKA INVESTMENT GROUP, L.P.0.29%422.68K109.38M-19.4K-4.39%
Dec 31, 2023TD ASSET MANAGEMENT INC0.27%389.98K100.92M108.96K+38.77%
Dec 31, 2023SUMITOMO MITSUI TRUST HOLDINGS, INC.0.26%383.1K99.14M4.59K+1.21%
Dec 31, 2023PALO ALTO INVESTORS LP0.26%380.42K98.44M-865-0.23%
Dec 31, 2023ROYAL BANK OF CANADA0.26%374.01K96.79M67.46K+22.01%
Dec 31, 2023CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM0.25%363.21K93.99M82.05K+29.18%

BIIB Insiders

Among the BIIB insiders holding of 0.21% of the stake in company, BIOGEN INC., 10 percent owner, holds the largest shares of 17.65M. DENNER ALEXANDER J, director, is the second largest BIIB insider with ownership of 643K shares. SCANGOS GEORGE A, Chief Executive Officer, stands third with possession of 54.78K shares of that stake.

InsidersDesignationShares Held
BIOGEN INC.10 percent owner17.65M
DENNER ALEXANDER Jdirector643K
SCANGOS GEORGE AChief Executive Officer54.78K
ALEXANDER SUSAN HEVP Chief Legal Off & Corp Sec39.4K
VOUNATSOS MICHELChief Executive Officer34.81K
COX JOHNEVP Pharmaceutical Oper & Tech25.57K
ROWINSKY ERIC Kdirector20.63K
PANGIA ROBERT Wdirector18.59K
DORSA CAROLINEdirector17.09K
WILLIAMS DOUGLAS EEVP Research & Development11.82K
SHERWIN STEPHEN Adirector11.32K
CLANCY PAUL JExecutive VP and CFO10.81K
SANDROCK ALFREDHead of Research & Development10.17K
GREGORY GINGEREVP, Human Resources8.48K
POSNER BRIAN Sdirector7.4K
KARABOUTIS ADRIANAEVP, Tech, Bus. Sol & Corp Aff7.36K
SINGHAL PRIYAHead of Development5.43K
PAPADOPOULOS STELIOSdirector5K
EHLERS MICHAEL DEVP, Research and Development4.28K
MANTAS JESUS Bdirector2.94K
GUINDO CHIRFIHead of Glob Prod Strat & Com2.92K
KOPPEL ADAMEVP, Strategy and Bus. Dev.2.4K
DIPIETRO KENNETHEVP Human Resources0

Buying/Selling by Insiders

DateInsiderTypeCostSharesValue ($)Shares Total
Mar 07, 2025SHERWIN STEPHEN ASALE150.028.76K1.31M11.32K
Dec 09, 2024SINGHAL PRIYASALE157.2111017.29K5.43K
Sep 03, 2024SINGHAL PRIYASALE204.2243188.02K5.32K
Apr 02, 2024SINGHAL PRIYASALE213.099319.82K4.89K
Feb 22, 2024SINGHAL PRIYASALE221.2326257.96K4.89K
Feb 16, 2024SINGHAL PRIYASALE221.4910823.92K5.15K
Feb 15, 2024ROWINSKY ERIC KPURCHASE222.54455101.26K20.63K
Feb 12, 2024SINGHAL PRIYASALE239.45419100.33K4.52K
Feb 02, 2024SINGHAL PRIYASALE245.93634155.92K4.1K
Dec 11, 2023SINGHAL PRIYASALE248.0011027.28K3.46K
Sep 26, 2023BIOGEN INC.SALE0.506M3M17.65M
Sep 05, 2023SINGHAL PRIYASALE269.43431116.12K3.35K
Jul 03, 2023SINGHAL PRIYASALE282.878122.91K2.92K
Apr 28, 2023GREGORY GINGERSALE300.002.68K804.3K8.48K
Apr 04, 2023SINGHAL PRIYASALE277.119125.22K2.84K
Mar 28, 2023SINGHAL PRIYASALE270.06568153.39K2.84K
Nov 14, 2022GREGORY GINGERSALE300.115.61K1.68M5.71K
Oct 27, 2022ALEXANDER SUSAN HSALE280.705.53K1.55M39.4K
Dec 28, 2021BIOGEN INC.SALE8.512.76K23.52K24.15M
Dec 27, 2021BIOGEN INC.SALE8.566005.14K24.16M
Dec 23, 2021BIOGEN INC.SALE8.5581.19K694.53K24.16M
Dec 09, 2021BIOGEN INC.SALE8.5623.66K202.54K24.24M
Dec 08, 2021BIOGEN INC.SALE8.6475.81K654.83K24.26M
Dec 07, 2021BIOGEN INC.SALE8.5252.18K444.44K24.34M
Nov 26, 2021BIOGEN INC.SALE8.6028.88K248.43K24.39M
Jun 07, 2021GUINDO CHIRFISALE440.003.09K1.36M2.92K
Jun 07, 2021SANDROCK ALFREDSALE440.007.67K3.38M10.17K
Jun 04, 2021POSNER BRIAN SSALE274.1736098.7K7.4K
Feb 09, 2021MANTAS JESUS BPURCHASE267.00898239.77K2.94K
Nov 30, 2020VOUNATSOS MICHELPURCHASE241.313.1K748.05K34.81K
Nov 04, 2020SANDROCK ALFREDSALE350.001.5K525K13.07K
Mar 11, 2020SHERWIN STEPHEN ASALE295.212.16K638.85K14.35K
Dec 02, 2019POSNER BRIAN SSALE292.351.06K308.43K7K
May 02, 2019DENNER ALEXANDER JPURCHASE231.2438K8.79M643K
May 01, 2019DENNER ALEXANDER JPURCHASE229.4630K6.88M605K
May 01, 2019VOUNATSOS MICHELPURCHASE231.484.35K1.01M21.01K
Apr 30, 2019DENNER ALEXANDER JPURCHASE229.2550.34K11.54M575K
Mar 18, 2019PANGIA ROBERT WSALE328.556.11K2.01M18.59K
Feb 01, 2019DENNER ALEXANDER JPURCHASE328.457K2.3M524.66K
Jan 31, 2019DENNER ALEXANDER JPURCHASE330.5225.8K8.53M517.66K
Jan 30, 2019DENNER ALEXANDER JPURCHASE324.8630K9.75M491.86K
Sep 26, 2018EHLERS MICHAEL DSALE350.001K350K4.28K
Apr 25, 2018DENNER ALEXANDER JPURCHASE269.9148K12.96M461.86K
Feb 27, 2018SANDROCK ALFREDSALE290.8325975.32K6.55K
Feb 23, 2018SANDROCK ALFREDSALE293.44908266.44K6.55K
Feb 20, 2018SANDROCK ALFREDSALE292.00743216.96K6.55K
Feb 15, 2018SANDROCK ALFREDSALE298.851.29K386.71K7.3K
Jan 09, 2018PANGIA ROBERT WSALE329.655.83K1.92M17.71K
Dec 29, 2017VOUNATSOS MICHELPURCHASE320.55780250.03K4.88K
Nov 29, 2017DENNER ALEXANDER JPURCHASE319.8410K3.2M413.86K
Nov 28, 2017DENNER ALEXANDER JPURCHASE316.1220K6.32M403.86K
Jul 25, 2017ALEXANDER SUSAN HSALE290.014.97K1.44M22.26K
Jul 19, 2017ALEXANDER SUSAN HSALE285.007.76K2.21M27.23K
Jun 09, 2017POSNER BRIAN SSALE256.311.08K277.84K6.33K
May 01, 2017VOUNATSOS MICHELPURCHASE271.351.4K380.43K2.93K
Apr 27, 2017DENNER ALEXANDER JPURCHASE278.5815K4.18M325K
Apr 25, 2017CLANCY PAUL JSALE290.009.89K2.87M10.81K
Apr 03, 2017SANDROCK ALFREDSALE274.081.98K542.95K7.06K
Mar 13, 2017CLANCY PAUL JSALE291.559.89K2.88M20.71K
Mar 01, 2017SANDROCK ALFREDSALE290.07973282.24K9.04K
Feb 27, 2017VOUNATSOS MICHELPURCHASE285.391.33K380.42K1.43K
Jan 09, 2017PANGIA ROBERT WSALE295.395.45K1.61M16.63K
Dec 01, 2016KARABOUTIS ADRIANASALE296.534814.23K7.36K
Oct 04, 2016KARABOUTIS ADRIANASALE311.9426281.73K7.58K
Oct 03, 2016KARABOUTIS ADRIANASALE313.00380118.94K7.84K
Sep 22, 2016DORSA CAROLINESALE314.0027.57K8.66M17.09K
Jul 21, 2016SCANGOS GEORGE ASALE280.0015743.96K54.78K
Jun 06, 2016KOPPEL ADAMSALE290.00555160.95K2.4K
Jun 03, 2016SCANGOS GEORGE ASALE290.00842244.18K54.94K
Jun 01, 2016SCANGOS GEORGE ASALE287.97487140.24K55.78K
May 31, 2016SCANGOS GEORGE ASALE290.003.37K976.72K56.27K
May 25, 2016SCANGOS GEORGE ASALE280.0015743.96K59.63K
May 02, 2016SCANGOS GEORGE ASALE274.74487133.8K59.79K
Apr 06, 2016SCANGOS GEORGE ASALE280.0015743.96K60.28K
Apr 06, 2016KOPPEL ADAMSALE275.0010228.05K1.85K
Apr 01, 2016SCANGOS GEORGE ASALE258.83487126.05K60.43K
Mar 01, 2016SCANGOS GEORGE ASALE261.37487127.29K60.92K
Feb 25, 2016SANDROCK ALFREDSALE261.9018347.93K7.99K
Feb 25, 2016KARABOUTIS ADRIANASALE261.908422K8.13K
Feb 17, 2016SANDROCK ALFREDSALE256.16722184.95K7.99K
Feb 17, 2016SCANGOS GEORGE ASALE256.16487124.75K59.85K
Feb 09, 2016SANDROCK ALFREDSALE246.54852210.05K7.74K
Dec 04, 2015SANDROCK ALFREDSALE277.00441122.16K7.74K
Dec 02, 2015KARABOUTIS ADRIANASALE289.144813.88K7.88K
Oct 23, 2015DENNER ALEXANDER JPURCHASE276.77100K27.68M310K
Oct 22, 2015DENNER ALEXANDER JPURCHASE277.80210K58.34M210K
Oct 05, 2015KARABOUTIS ADRIANASALE291.4326978.39K8.09K
Oct 02, 2015KARABOUTIS ADRIANASALE283.38417118.17K8.36K
Jul 27, 2015PAPADOPOULOS STELIOSPURCHASE304.785K1.52M5K
Jun 22, 2015POSNER BRIAN SSALE415.00470195.05K5.28K
Jun 19, 2015WILLIAMS DOUGLAS ESALE410.003.84K1.57M11.82K
Jun 15, 2015POSNER BRIAN SSALE386.64400154.66K5.75K
Jun 01, 2015SCANGOS GEORGE ASALE398.871.36K543.26K41.09K
May 01, 2015SCANGOS GEORGE ASALE377.521.36K514.18K42.45K
Apr 01, 2015SCANGOS GEORGE ASALE423.201.36K576.4K43.81K
Mar 27, 2015SANDROCK ALFREDSALE430.12430184.95K8.57K
Mar 25, 2015COX JOHNSALE449.0612.01K5.39M25.57K
Mar 20, 2015ROWINSKY ERIC KSALE475.0011.67K5.54M11.31K
Mar 19, 2015ROWINSKY ERIC KSALE436.142.33K1.02M11.31K
Mar 17, 2015ROWINSKY ERIC KSALE425.454.67K1.99M11.31K
Mar 16, 2015DIPIETRO KENNETHSALE415.46803333.61K0
Mar 13, 2015SCANGOS GEORGE ASALE412.69537221.61K45.18K
Mar 10, 2015SHERWIN STEPHEN ASALE409.676K2.46M4.15K
Mar 10, 2015PANGIA ROBERT WSALE413.991K413.99K15.8K
Mar 09, 2015ROWINSKY ERIC KSALE417.234.67K1.95M11.31K

Insider Transaction Summary (6 Months)

SHARESTRANS
PURCHASE00
SALES8.87K2
NET SHARES-8.87K2
SHARES HELD16.74K2
% NET SHARES-152.97%0%

Frequently Asked Questions

How many institutions own BIIB stock?
A company's 13F filings with the Securities and Exchange Commission (SEC) provides investors with comprehensive information about institutional ownership in a listed company, a sign of strength in terms of how many institutions have confidence in that company. The number of institutional investors who currently own BIIB shares is 1318, representing 94.4% of the company's common stock.
Who are the major shareholders selling Biogen Inc. stock?
NUVEEN ASSET MANAGEMENT, LLC, in the last quarter, reduced its stake in BIIB by -22.37% restricting it's holding to 347.12 thousand shares of worth nearly $74.85M. FIRST TRUST ADVISORS LP also lessened -65.79% of the BIIB shares from its portfolio, reducing its holding to 334.3 thousand shares of worth $72.08M. CREDIT SUISSE AG/ also shunned BIIB shares holding by -8.38% last quarter which brought its holding to 291.73 thousand shares worth $62.90M.
Investors who are buying BIIB stock?
As per its latest 13F filing, NATIONAL PENSION SERVICE increased its stake in BIIB by 3.9% in the last quarter. The institutional holder raised its holding to 314.12 thousand shares having worth more than $67.73M. BNP PARIBAS ARBITRAGE, SNC also added 42.41% more shares of BIIB to its portfolio, raising its holding to 281.4 thousand shares of worth $60.68M. RHUMBLINE ADVISERS also increased its BIIB shares holding by 0.21% which brought its holding to 278.64 thousand shares worth $60.08M.
BIIB's major insiders: who are they?
The insider with the most stakes in BIIB is BIOGEN INC. , 10 percent owner at the company. Additionally, BIIB stock is highly held by director DENNER ALEXANDER J and Chief Executive Officer SCANGOS GEORGE A among others.
Did an insider recently sell BIIB stock?
Company executives, directors, and other insiders own 0.21% percent of Biogen Inc.'s stock. Within the last six months, there have been 2 transaction(s) in which BIIB insiders have sold stock, totaling 8.87K shares. Insiders that have sold shares include SHERWIN STEPHEN A, SINGHAL PRIYA, and BIOGEN INC..
Which insider recently purchased BIIB stock?
There have been 0 transaction(s) during the past 6-months in which Biogen Inc. insiders have bought stock, totalling 0 shares
How much of BIIB does insiders own?
Around 16.74K Biogen Inc. shares are held by insiders, which represents about 0.21% of BIIB stock.
Who is the insider with the largest stake?
BIIB 10 percent owner, BIOGEN INC. holds the largest portfolio of the company's shares. BIIB shares owned by BIOGEN total nearly 17.65 million.
Which institution holds the most shares in BIIB?
PARNASSUS INVESTMENTS, LLC is the largest institutional owner in BIIB which holds 360.74 thousand shares worth $77.79M or 0.25% of the total BIIB shares outstanding followed by NUVEEN ASSET MANAGEMENT, LLC with ownership of 347.12 thousand shares representing 0.24% of the BIIB ownership. FIRST TRUST ADVISORS LP is the third largest stakeholder with 334.3 thousand shares or 0.23% of the ownership worth more than $72.08M.
Is Biogen Inc. stock optionable?
Stock options give the owner the ability but not the obligation to buy or sell a security at a predetermined price and date. Stock options can be classified into two types: puts and calls. A put is a bet on falling stock, and a call is a bet on rising stock. As far as the BIIB is concerned, it is a stock which is optionable.
Is there a short position on BIIB's shares?
Number of BIIB shares short is 3.34M. Shares short is a market sentiment in which investors have sold their shares short in a given stock but have not yet covered them or closed them out.
About how many outstanding BIIB shares are there?
As of today, 146.38M shares of BIIB are outstanding.
Is there many float in BIIB stock?
Float represents the number of tradeable shares in a specific stock. By subtracting restricted and closely-held shares from a firm's total outstanding shares, we can calculate its floating stock. The term "closely-held shares" refers to shares held by employees, major shareholders, and company insiders. At present, BIIB has 146.00M shares in float.
BIIB short ratio: what is it?
Short ratio is calculated by dividing the number of short shares, short interest or bets that shareholders will sell short from the average daily volume. A higher ratio indicates longer times needed to repurchase borrowed shares (sold). The short ratio for BIIB is 1.86.
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