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BLUEBIRD BIO INC
BLUEBIRD BIO INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q4)
Portfolio Summary: 219 Institutional holders with a total value of $2,602,224,824.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 FMR LLC 5,501,537 353,309,000 13.58%
2 BAILLIE GIFFORD & CO 4,883,321 313,607,000 12.05%
3 Capital Research Global Investors 4,452,741 285,955,000 10.99%
4 VANGUARD GROUP INC 2,371,577 152,303,000 5.85%
5 Capital World Investors 2,075,000 133,257,000 5.12%
6 PRICE T ROWE ASSOCIATES INC /MD/ 2,005,303 128,781,000 4.95%
7 OppenheimerFunds, Inc. 1,316,324 84,534,000 3.25%
8 STATE STREET CORP 954,682 61,310,000 2.36%
9 ORBIMED ADVISORS LLC 941,700 60,476,000 2.32%
10 BlackRock Institutional Trust Company, N.A. 879,313 56,469,000 2.17%
11 JENNISON ASSOCIATES LLC 864,314 55,506,000 2.13%
12 BlackRock Fund Advisors 771,142 49,523,000 1.90%
13 FRANKLIN RESOURCES INC 765,661 49,171,000 1.89%
14 PFM Health Sciences, LP 667,840 42,889,000 1.65%
15 EVENTIDE ASSET MANAGEMENT, LLC 539,500 34,647,000 1.33%
16 RS INVESTMENT MANAGEMENT CO LLC 515,846 33,128,000 1.27%
17 AMERIPRISE FINANCIAL INC 503,407 32,331,000 1.24%
18 WELLS FARGO & COMPANY/MN 474,832 30,492,000 1.17%
19 SUSQUEHANNA INTERNATIONAL GROUP, LLP 434,600 27,910,000 1.07% Put
20 DEUTSCHE BANK AG\ 429,645 27,590,000 1.06%
21 Artal Group S.A. 360,000 23,119,000 0.89%
22 COLUMBUS CIRCLE INVESTORS 315,957 20,291,000 0.78%
23 GILDER GAGNON HOWE & CO LLC 295,327 18,966,000 0.73%
24 GOLDMAN SACHS GROUP INC 266,034 17,085,000 0.66%
25 CAPITAL FUND MANAGEMENT S.A. 258,634 16,609,000 0.64%
26 ArrowMark Colorado Holdings LLC 248,328 15,948,000 0.61%
27 NORGES BANK 241,230 15,492,000 0.60%
28 EMERALD ADVISERS, LLC 230,252 14,787,000 0.57%
29 Invesco Ltd. 227,322 14,598,000 0.56%
30 SUSQUEHANNA INTERNATIONAL GROUP, LLP 226,000 14,514,000 0.56% Call
31 GEODE CAPITAL MANAGEMENT, LLC 220,243 14,143,000 0.54%
32 EMERALD MUTUAL FUND ADVISERS TRUST 192,375 12,354,000 0.47%
33 State of Tennessee, Department of Treasury 191,963 12,328,000 0.47%
34 BANK OF AMERICA CORP /DE/ 175,271 11,256,000 0.43%
35 NEW YORK STATE COMMON RETIREMENT FUND 171,022 10,983,000 0.42%
36 MARSHALL WACE, LLP 168,427 10,816,000 0.42%
37 Mitsubishi UFJ Trust & Banking Corp 163,850 10,522,000 0.40%
38 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 156,472 10,049,000 0.39%
39 Bank of New York Mellon Corp 149,263 9,587,000 0.37%
40 FRONTIER CAPITAL MANAGEMENT CO LLC 146,707 9,422,000 0.36%
41 UBS Group AG 145,883 9,369,000 0.36%
42 TIAA CREF INVESTMENT MANAGEMENT LLC 145,057 9,316,000 0.36%
43 JANUS HENDERSON INVESTORS US LLC 143,469 9,214,000 0.35%
44 BAKER BROS. ADVISORS LP 141,105 9,062,000 0.35%
45 BALYASNY ASSET MANAGEMENT L.P. 134,261 8,622,000 0.33%
46 AQR CAPITAL MANAGEMENT LLC 134,169 8,616,000 0.33%
47 NORTHERN TRUST CORP 134,065 8,610,000 0.33%
48 AXA S.A. 124,798 8,015,000 0.31%
49 Ghost Tree Capital, LLC 120,000 7,706,000 0.30%
50 CASDIN CAPITAL, LLC 100,000 6,422,000 0.25%
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From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.