Baker Bros. Advisors’s bluebird bio BLUE Stock Holding History

Baker Bros. Advisors’s Portfolio BLUE Stock Details BLUE Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2023 Q4	–	Sell	-124,986	Closed	-$7.6M	–	89
2023 Q3	$7.6M	Hold	124,986	–	–	0.04%	54
2023 Q2	$8.22M	Hold	124,986	–	–	0.05%	62
2023 Q1	$7.95M	Hold	124,986	–	–	0.04%	57
2022 Q4	$17.3M	Hold	124,986	–	–	0.1%	46
2022 Q3	$15.8M	Hold	124,986	–	–	0.1%	54
2022 Q2	$10.3M	Hold	124,986	–	–	0.06%	60
2022 Q1	$12.1M	Hold	124,986	–	–	0.07%	60
2021 Q4	$25M	Sell	124,986 -67,992	-35%	-$16M	0.12%	50
2021 Q3	$47.8M	Buy	192,978 +175,455	+1,001%	+$50.2M	0.21%	39
2021 Q2	$7.26M	Hold	17,523	–	–	0.03%	86
2021 Q1	$6.84M	Hold	17,523	–	–	0.03%	86
2020 Q4	$9.82M	Sell	17,523 -1,931	-10%	-$1.22M	0.04%	74
2020 Q3	$13.6M	Sell	19,454 -1,004	-5%	-$783K	0.05%	61
2020 Q2	$16.2M	Buy	20,458 +17,370	+563%	+$13.1M	0.07%	51
2020 Q1	$1.84M	Hold	3,088	–	–	0.01%	91
2019 Q4	$3.51M	Hold	3,088	–	–	0.02%	77
2019 Q3	$3.67M	Hold	3,088	–	–	0.03%	71
2019 Q2	$5.09M	Hold	3,088	–	–	0.03%	64
2019 Q1	$6.29M	Hold	3,088	–	–	0.04%	55
2018 Q4	$3.97M	Sell	3,088 -1,501	-33%	-$2.3M	0.03%	58
2018 Q3	$8.68M	Sell	4,589 -10,851	-70%	-$22.4M	0.06%	55
2018 Q2	$31.4M	Hold	15,440	–	–	0.24%	33
2018 Q1	$34.1M	Hold	15,440	–	–	0.29%	30
2017 Q4	$35.6M	Sell	15,440 -3,199	-17%	-$6.49M	0.31%	31
2017 Q3	$33.2M	Sell	18,639 -4,632	-20%	-$6.47M	0.27%	24
2017 Q2	$31.7M	Sell	23,271 -3,860	-14%	-$4.66M	0.28%	23
2017 Q1	$31.9M	Hold	27,131	–	–	0.26%	27
2016 Q4	$21.7M	Buy	27,131 +4,439	+20%	+$3.52M	0.21%	33
2016 Q3	$19.9M	Hold	22,692	–	–	0.18%	34
2016 Q2	$12.7M	Sell	22,692 -4,555	-17%	-$2.58M	0.13%	47
2016 Q1	$15M	Buy	27,247 +16,354	+150%	+$10M	0.16%	42
2015 Q4	$9.06M	Hold	10,893	–	–	0.08%	64
2015 Q3	$12.1M	Sell	10,893 -772	-7%	-$1.41M	0.11%	56
2015 Q2	$25.4M	Buy	11,665 +349	+3%	+$711K	0.22%	42
2015 Q1	$17.7M	Sell	11,316 -264	-2%	-$348K	0.15%	45
2014 Q4	$13.8M	Hold	11,580	–	–	0.14%	44
2014 Q3	$5.38M	Sell	11,580 -3,726	-24%	-$1.72M	0.07%	60
2014 Q2	$7.65M	Hold	15,306	–	–	0.09%	52
2014 Q1	$4.51M	Buy	15,306 +6,470	+73%	+$1.96M	0.06%	77
2013 Q4	$2.4M	Buy	8,836 +227	+3%	+$63.4K	0.03%	78
2013 Q3	$3.01M	Buy	+8,609	New	+$3.2M	0.04%	67

Other funds holding BLUE

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

GIM

Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return

Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return

Pictet Asset Management Carouge, Switzerland $94.8B AUM 24.11% 1-Year Est. Return

Norges Bank Oslo, Norway $935B AUM

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

PAI

Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return

GCM

Ghisallo Capital Management Boston, Massachusetts $3.63B AUM 30.51% 1-Year Est. Return

Baker Bros. Advisors's BLUE Position: Q4 2023 in Review

Baker Bros. Advisors sold out of bluebird bio (BLUE) in Q4 2023, closing a stake of 124,986 shares — an estimated $7.6M sold.

Baker Bros. Advisors first reported a position in BLUE in Q3 2013 and held it in 41 quarters. The position peaked at $47.8M in Q3 2021. 187 funds tracked by Wall St. Rank hold BLUE as of Q4 2023.

Baker Bros. Advisors reported no remaining bluebird bio position as of Q4 2023 after selling out during the quarter.
Baker Bros. Advisors sold 124,986 bluebird bio shares in Q4 2023, an estimated $7.6M.
Baker Bros. Advisors first reported a position in bluebird bio in Q3 2013 and held it in 41 quarters.
Baker Bros. Advisors's bluebird bio position peaked at $47.8M in Q3 2021.
187 funds tracked by Wall St. Rank held bluebird bio as of Q4 2023.

Based on Baker Bros. Advisors's 13F filing for Q4 2023, filed 14 Feb 2024.