Vault-13

BLUEBIRD BIO INC

COM · CUSIP 09609G100

177 institutional holders -3 vs Q1 2023
93,796,31293.8m shares reported held*
$308.6mreported value*
23 new 67 added 43 reduced 29 sold out net sold ≈ $13.2m (-4.0m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($710 this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $3.29. Options: 11 managers hold calls ($3.9m notional), 9 hold puts ($5.7m).

Trends to Q2 2023

Institutional holders

Managers reporting a position, each quarter

0100200Q3 22: 162Q4 22: 185Q1 23: 180Q2 23: 177177Q3 22Q4 22Q1 23Q2 23
Numbers
QuarterHolders
Q3 2022162
Q4 2022185
Q1 2023180
Q2 2023177

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
2000200Q4 22: 102 bought or addedQ4 22: 64 cut or sold outQ4 22Q1 23: 95 bought or addedQ1 23: 71 cut or sold outQ1 23Q2 23: 90 bought or addedQ2 23: 72 cut or sold outQ2 23
Numbers
QuarterBought or addedCut or sold out
Q4 202210264
Q1 20239571
Q2 20239072

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$2.5m$5m$7.5m$10mQ3 22 calls: $8.1mQ3 22 puts: $6.4mQ3 22P/C 0.79Q4 22 calls: $8.5mQ4 22 puts: $4.9mQ4 22P/C 0.58Q1 23 calls: $3.5mQ1 23 puts: $4.0mQ1 23P/C 1.14Q2 23 calls: $3.9mQ2 23 puts: $5.7mQ2 23P/C 1.47
Numbers
QuarterCallsPutsP/C
Q3 2022$8.1m$6.4m0.79
Q4 2022$8.5m$4.9m0.58
Q1 2023$3.5m$4.0m1.14
Q2 2023$3.9m$5.7m1.47

Biggest buyers

Granahan Investment Management, LLC Added +3,411,065+3.4m
PFM Health Sciences, LP Added +2,699,339+2.7m
PICTET ASSET MANAGEMENT SA Added +1,562,062+1.6m
Walleye Capital LLC New +836,760+836.8k
JACOBS LEVY EQUITY MANAGEMENT, INC Added +738,987+739.0k
GROUP ONE TRADING LLC Added +635,031+635.0k
RENAISSANCE TECHNOLOGIES LLC New +550,200+550.2k
Lion Point Capital, LP New +531,256+531.3k
JPMORGAN CHASE & CO Added +519,354+519.4k
JANE STREET GROUP, LLC Added +439,219+439.2k

Biggest sellers

TANG CAPITAL MANAGEMENT LLC Reduced -2,500,000-2.5m
DEERFIELD MANAGEMENT COMPANY, L.P. Sold out -2,175,000-2.2m
CITADEL ADVISORS LLC Reduced -1,742,336-1.7m
MILLENNIUM MANAGEMENT LLC Sold out -1,619,161-1.6m
Balyasny Asset Management L.P. Sold out -1,450,239-1.5m
STATE STREET CORP Reduced -1,407,416-1.4m
DIMENSIONAL FUND ADVISORS LP Reduced -1,211,649-1.2m
VOLORIDGE INVESTMENT MANAGEMENT, LLC Sold out -1,052,249-1.1m
Point72 Asset Management, L.P. Reduced -885,592-885.6k
CITIGROUP INC Reduced -791,731-791.7k

Biggest calls

JPMORGAN CHASE & CO New $1.1m338.4k shares
GROUP ONE TRADING LLC Added $946.2k287.6k shares
JANE STREET GROUP, LLC Added $838.6k254.9k shares
CITADEL ADVISORS LLC Reduced $405.7k123.3k shares
Caption Management, LLC New $164.5k50.0k shares
CITIGROUP INC Unchanged $164.2k49.9k shares
SIMPLEX TRADING, LLC Reduced $109.0k36.2k shares
WOLVERINE TRADING, LLC Reduced $81.8k25.4k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $64.8k19.7k shares
Walleye Trading LLC Unchanged $2.0k600 shares

Biggest puts

GROUP ONE TRADING LLC Added $2.3m687.4k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $1.0m316.8k shares
CITADEL ADVISORS LLC Added $758.0k230.4k shares
JANE STREET GROUP, LLC Reduced $684.3k208.0k shares
SIMPLEX TRADING, LLC Reduced $605.0k184.1k shares
Caption Management, LLC New $164.5k50.0k shares
CITIGROUP INC Unchanged $164.2k49.9k shares
WOLVERINE TRADING, LLC Reduced $55.7k17.3k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Holders, Q2 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 16,358,13016.4m $53.8m $53.8m 0.00% Reduced -1.4m -1,407,416
2 BlackRock Inc. 0.00% of their portfolio New York, NY 8,792,7228.8m $28.9m $28.9m 0.00% Reduced -153.3k -153,255
3 TANG CAPITAL MANAGEMENT LLC 3.58% of their portfolio SAN DIEGO, CA 7,382,8277.4m $24.3m $24.3m 3.58% Reduced -2.5m -2,500,000
4 PFM Health Sciences, LP 0.96% of their portfolio SAN FRANCISCO, CA 7,285,1217.3m $24.0m $24.0m 0.96% Added +2.7m +2,699,339
5 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 5,571,2445.6m $18.3m $18.3m 0.00% Added +149.0k +148,970
6 Granahan Investment Management, LLC 0.49% of their portfolio WALTHAM, MA 4,856,3224.9m $16.0m $16.0m 0.49% Added +3.4m +3,411,065
7 PICTET ASSET MANAGEMENT SA 0.02% of their portfolio GENEVA 73, V8 4,666,8134.7m $15.4m $15.4m 0.02% Added +1.6m +1,562,062
8 BAKER BROS. ADVISORS LP 0.05% of their portfolio NEW YORK, NY 2,499,7152.5m $8.2m $8.2m 0.05% Unchanged
9 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 2,219,7582.2m $7.3m $7.3m 0.00% Added +121.1k +121,116
10 JACOBS LEVY EQUITY MANAGEMENT, INC 0.04% of their portfolio FLORHAM PARK, NJ 2,090,9102.1m $6.9m $6.9m 0.04% Added +739.0k +738,987
11 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 1,934,5991.9m $6.4m $6.4m 0.00% Reduced -30.7k -30,674
12 CREDIT SUISSE AG/ 0.01% of their portfolio ZURICH, V8 1,851,8081.9m $6.1m $6.1m 0.01% Added +163.6k +163,584
13 Rafferty Asset Management, LLC 0.03% of their portfolio New York, NY 1,837,4621.8m $6.0m $6.0m 0.03% Added +129.0k +129,019
14 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 1,764,3211.8m $5.8m $5.8m 0.00% Added +519.4k +519,354
15 Frazier Life Sciences Management, L.P. 0.34% of their portfolio PALO ALTO, CA 1,709,9071.7m $5.6m $5.6m 0.34% Added +269.1k +269,150
16 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 1,384,8201.4m $4.6m $4.6m 0.00% Reduced -1.2m -1,211,649
17 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 1,123,4911.1m $3.7m $3.7m 0.00% Added +200.7k +200,731
18 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 1,058,6081.1m $3.5m $3.5m 0.00% Reduced -549.2k -549,153
19 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 953,295953.3k $3.1m $3.1m 0.00% Added +439.2k +439,219
20 Walleye Capital LLC 0.05% of their portfolio NEW YORK, NY 836,760836.8k $2.8m $2.8m 0.05% New
21 GROUP ONE TRADING LLC 0.11% of their portfolio CHICAGO, IL 795,953796.0k $2.6m $2.6m 0.11% Added +635.0k +635,031
22 Woodline Partners LP 0.03% of their portfolio San Francisco, CA 782,892782.9k $2.6m $2.6m 0.03% Reduced -5.0k -5,033
23 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 750,753750.8k $2.5m $2.5m 0.00% Added +193.7k +193,676
24 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 555,595555.6k $1.8m $1.8m 0.00% Added +325.2k +325,234
25 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 550,200550.2k $1.8m $1.8m 0.00% New
26 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 540,471540.5k $1.8m $1.8m 0.00% Added +154.5k +154,491
27 Lion Point Capital, LP 1.30% of their portfolio NEW YORK, NY 531,256531.3k $1.7m $1.7m 1.30% New
28 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 527,437527.4k $1.7m $1.7m 0.00% Reduced -791.7k -791,731
29 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 513,134513.1k $1.7m $1.7m 0.00% Reduced -775.7k -775,685
30 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 465,813465.8k $1.5m $1.5m 0.00% Reduced -53.8k -53,844
31 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 439,034439.0k $1.4m $1.4m 0.00% Reduced -1.7m -1,742,336
32 UBS Group AG 0.00% of their portfolio ZURICH, V8 419,187419.2k $1.4m $1.4m 0.00% Reduced -127.5k -127,458
33 Ikarian Capital, LLC 0.46% of their portfolio DALLAS, TX 412,628412.6k $1.4m $1.4m 0.46% Unchanged
34 Legal & General Group Plc 0.00% of their portfolio London, X0 410,557410.6k $1.4m $1.4m 0.00% Added +369.8k +369,774
35 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 405,422405.4k $1.3m $1.3m 0.00% Added +6.8k +6,842
36 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 383,191383.2k $1.3m $1.3m 0.00% Added +173.3k +173,289
37 Cubist Systematic Strategies, LLC 0.01% of their portfolio STAMFORD, CT 373,488373.5k $1.2m $1.2m 0.01% New
38 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio TORONTO, A6 353,000353.0k $1.2m $1.2m 0.01% New
39 PANAGORA ASSET MANAGEMENT INC 0.01% of their portfolio BOSTON, MA 352,603352.6k $1.2m $1.2m 0.01% Added +30.3k +30,302
40 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 350,871350.9k $1.2m $1.2m 0.00% Added +37.4k +37,373
41 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 330,297330.3k $1.1m $1.1m 0.00% Reduced -282.2k -282,195
42 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 307,755307.8k $1.0m $1.0m 0.00% Added +13.5k +13,546
43 Hudson Bay Capital Management LP 0.01% of their portfolio STAMFORD, CT 300,000300.0k $987.0k $987.0k 0.01% Reduced -300.0k -300,000
44 PROFUND ADVISORS LLC 0.05% of their portfolio BETHESDA, MD 294,681294.7k $969.5k $969.5k 0.05% Reduced -2.3k -2,337
45 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 292,054292.1k $960.9k $960.9k 0.00% Added +58.8k +58,774
46 Endurant Capital Management LP 1.19% of their portfolio San Mateo, CA 281,441281.4k $925.9k $925.9k 1.19% Reduced -243.6k -243,618
47 ExodusPoint Capital Management, LP 0.01% of their portfolio NEW YORK, NY 271,627271.6k $894.0k $894.0k 0.01% New
48 Birchview Capital, LP 0.61% of their portfolio BURLINGTON, VT 249,200249.2k $819.9k $819.9k 0.61% Added +50.0k +50,000
49 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 248,834248.8k $818.7k $818.7k 0.00% Added +170.9k +170,871
50 SIMPLEX TRADING, LLC 0.03% of their portfolio CHICAGO, IL 239,291239.3k $787.0k $787.0k 0.03% Reduced -42.1k -42,116
51 Swiss National Bank 0.00% of their portfolio ZURICH, V8 231,600231.6k $762.0k $762.0k 0.00% Added +9.4k +9,400
52 Summit X, LLC 0.18% of their portfolio CHESTERFIELD, MO 222,445222.4k $731.9k $731.9k 0.18% Added +30.7k +30,736
53 Jump Financial, LLC 0.03% of their portfolio Chicago, IL 222,260222.3k $731.2k $731.2k 0.03% Added +198.2k +198,157
54 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 182,056182.1k $599.0k $599.0k 0.00% Reduced -426.0k -426,013
55 Marex Group Ltd 0.10% of their portfolio London, X0 169,333169.3k $557.1k $557.1k 0.10% Added +33.9k +33,917
56 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 168,593168.6k $554.7k $554.7k 0.00% New
57 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 165,830165.8k $545.6k $545.6k 0.00% Added +1.6k +1,580
58 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 157,640157.6k $518.6k $518.6k 0.00% Added +58.8k +58,830
59 PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio COLUMBUS, OH 157,338157.3k $518.0k $518.0k 0.00% Added +88.8k +88,834
60 FMR LLC 0.00% of their portfolio BOSTON, MA 154,139154.1k $507.1k $507.1k 0.00% Reduced -64.0k -64,043
61 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 129,165129.2k $425.0k $425.0k 0.00% Added +427 +427
62 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 113,093113.1k $372.0k $372.0k 0.00% New
63 Ghisallo Capital Management LLC 0.04% of their portfolio BOSTON, MA 100,000100.0k $329.0k $329.0k 0.04% Unchanged
64 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 99,15899.2k $326.2k $326.2k 0.00% Added +295 +295
65 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 97,59297.6k $321.1k $321.1k 0.00% Added +65.0k +65,000
66 LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio LOS ANGELES, CA 97,14897.1k $319.6k $319.6k 0.00% Added +1.5k +1,500
67 Graham Capital Management, L.P. 0.01% of their portfolio ROWAYTON, CT 95,05295.1k $312.7k $312.7k 0.01% New
68 VIRTUS ADVISERS, LLC 0.17% of their portfolio HARTFORD, CT 89,02289.0k $292.9k $292.9k 0.17% Added +52.2k +52,223
69 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 88,73688.7k $291.9k $291.9k 0.00% Added +2.1k +2,129
70 E Fund Management Co., Ltd. 0.02% of their portfolio GUANGZHOU, F4 88,59088.6k $291.0k $291.0k 0.02% Reduced -3.6k -3,553
71 BIT Capital GmbH 0.03% of their portfolio BERLIN, 2M 81,15481.2k $261.3k $261.3k 0.03% Added +46.2k +46,154
72 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 77,59277.6k $255.3k $255.3k 0.00% Reduced -2.2k -2,163
73 Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio TOKYO, M0 73,24573.2k $241.0k $241.0k 0.00% Added +35.3k +35,333
74 BOOTHBAY FUND MANAGEMENT, LLC 0.01% of their portfolio NEW YORK, NY 72,42772.4k $238.3k $238.3k 0.01% Unchanged
75 Point72 Middle East FZE 0.01% of their portfolio DUBAI, C0 63,35263.4k $208.4k $208.4k 0.01% New
76 Hennion & Walsh Asset Management, Inc. 0.01% of their portfolio Parsippany, NJ 58,27458.3k $192.0k $192.0k 0.01% Reduced -42.0k -42,050
77 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 54,52754.5k $179.4k $179.4k 0.00% Unchanged
78 CAXTON ASSOCIATES LP 0.03% of their portfolio NEW YORK, NY 52,92552.9k $174.1k $174.1k 0.03% New
79 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 51,51051.5k $169.5k $169.5k 0.00% Added +1.8k +1,764
80 TUDOR INVESTMENT CORP ET AL 0.00% of their portfolio STAMFORD, CT 49,70449.7k $163.5k $163.5k 0.00% Reduced -274.3k -274,297
81 CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio RALEIGH, NC 48,97449.0k $161.1k $161.1k 0.00% Added +35.7k +35,701
82 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 43,54743.5k $143.3k $143.3k 0.00% Added +4.6k +4,600
83 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 43,31343.3k $143.0k $143.0k 0.00% Added +9.2k +9,224
84 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 43,03143.0k $141.6k $141.6k 0.00% Added +11.3k +11,258
85 GTS SECURITIES LLC 0.00% of their portfolio NEW YORK, NY 41,55441.6k $136.7k $136.7k 0.00% First filing
86 JANUS HENDERSON GROUP PLC 0.00% of their portfolio LONDON, X0 40,59540.6k $133.4k $133.4k 0.00% Reduced -43 -43
87 COLONY GROUP LLC 0.00% of their portfolio Boston, MA 39,31939.3k $129.0k $129.0k 0.00% Reduced -1.7k -1,666
88 PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio DES MOINES, IA 38,39138.4k $126.3k $126.3k 0.00% Added +7.0k +7,034
89 HORIZON KINETICS ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 38,00038.0k $125.0k $125.0k 0.00% Unchanged
90 Allspring Global Investments Holdings, LLC 0.00% of their portfolio CHARLOTTE, NC 37,90537.9k $124.7k $124.7k 0.00% Added +32.5k +32,540
91 NORGES BANK 0.00% of their portfolio OSLO, Q8 37,39137.4k $123.0k $123.0k 0.00% Unchanged
92 Mariner, LLC 0.00% of their portfolio Overland Park, KS 35,65235.7k $117.3k $117.3k 0.00% Reduced -3.8k -3,840
93 Dynamic Technology Lab Private Ltd 0.01% of their portfolio SINGAPORE, U0 34,65434.7k $114.0k $114.0k 0.01% New
94 Quent Capital, LLC 0.02% of their portfolio NEW YORK, NY 33,00033.0k $108.6k $108.6k 0.02% Unchanged
95 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 32,96033.0k $108.4k $108.4k 0.00% New
96 Jefferies Financial Group Inc. 0.00% of their portfolio NEW YORK, NY 31,45331.5k $103.5k $103.5k 0.00% New
97 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 30,51330.5k $100.4k $100.4k 0.00% Added +15.7k +15,720
98 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 30,37630.4k $99.9k $99.9k 0.00% Added +2.7k +2,680
99 ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio PHOENIX, AZ 29,87729.9k $98.3k $98.3k 0.00% Added +55 +55
100 Cerity Partners LLC 0.00% of their portfolio NEW YORK, NY 29,62329.6k $97.5k $97.5k 0.00% Added +10.0k +10,000