BlackRock’s bluebird bio BLUE Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2025
Q2
Sell
-697,973
Closed -$3.41M 5467
2025
Q1
$3.41M Sell
697,973
-10,696
-2% -$64.3K ﹤0.01% 3796
2024
Q4
$5.91M Sell
708,669
-63,519
-8% -$555K ﹤0.01% 3654
2024
Q3
$8.02M Buy
772,188
+77
+0% +$1.28K ﹤0.01% 3514
2024
Q2
$15.2M Buy
772,111
+13,183
+2% +$264K ﹤0.01% 3146
2024
Q1
$19.4M Buy
758,928
+309,778
+69% +$7.94M ﹤0.01% 3008
2023
Q4
$12.4M Buy
449,150
+7,729
+2% +$471K ﹤0.01% 3278
2023
Q3
$26.8M Buy
441,421
+1,785
+0.4% +$125K ﹤0.01% 2771
2023
Q2
$28.9M Sell
439,636
-7,663
-2% -$561K ﹤0.01% 2798
2023
Q1
$28.4M Buy
447,299
+78,866
+21% +$9.01M ﹤0.01% 2788
2022
Q4
$51M Buy
368,433
+23,484
+7% +$3.31M ﹤0.01% 2453
2022
Q3
$43.7M Buy
344,949
+54,282
+19% +$6.14M ﹤0.01% 2543
2022
Q2
$24.1M Sell
290,667
-1,189
-0.4% -$92.2K ﹤0.01% 2992
2022
Q1
$28.3M Sell
291,856
-3,744
-1% -$494K ﹤0.01% 2947
2021
Q4
$59.1M Sell
295,600
-149,822
-34% -$35.4M ﹤0.01% 2539
2021
Q3
$110M Sell
445,422
-10,760
-2% -$3.08M ﹤0.01% 2152
2021
Q2
$189M Buy
456,182
+148,345
+48% +$58.8M 0.01% 1808
2021
Q1
$120M Buy
307,837
+9,718
+3% +$4.79M ﹤0.01% 2081
2020
Q4
$167M Buy
298,119
+9,978
+3% +$6.32M 0.01% 1747
2020
Q3
$201M Sell
288,141
-20,123
-7% -$15.7M 0.01% 1385
2020
Q2
$244M Buy
308,264
+85,749
+39% +$64.7M 0.01% 1220
2020
Q1
$132M Sell
222,515
-3,321
-1% -$3.24M 0.01% 1457
2019
Q4
$257M Sell
225,836
-445
-0.2% -$484K 0.01% 1291
2019
Q3
$269M Buy
226,281
+2,208
+1% +$3.37M 0.01% 1185
2019
Q2
$369M Sell
224,073
-6,030
-3% -$10.4M 0.02% 981
2019
Q1
$469M Sell
230,103
-427
-0.2% -$752K 0.02% 771
2018
Q4
$296M Buy
230,530
+2,629
+1% +$4.03M 0.02% 1010
2018
Q3
$431M Buy
227,901
+16,745
+8% +$34.6M 0.02% 847
2018
Q2
$429M Sell
211,156
-87,466
-29% -$199M 0.02% 835
2018
Q1
$660M Buy
298,622
+2,840
+1% +$7.22M 0.03% 569
2017
Q4
$682M Buy
295,782
+17,887
+6% +$36.3M 0.03% 551
2017
Q3
$494M Buy
277,895
+21,566
+8% +$30.1M 0.02% 673
2017
Q2
$349M Buy
256,329
+10,664
+4% +$12.9M 0.02% 862
2017
Q1
$289M Buy
245,665
+245,120
+44,976% +$250M 0.02% 1003
2016
Q4
$436K Sell
545
-1,319
-71% -$1.05M ﹤0.01% 1763
2016
Q3
$1.64M Buy
1,864
+1,313
+238% +$951K ﹤0.01% 1287
2016
Q2
$309K Buy
551
+198
+56% +$112K ﹤0.01% 1871
2016
Q1
$194K Buy
353
+273
+341% +$168K ﹤0.01% 1745
2015
Q4
$67K Buy
80
+6
+8% +$5.99K ﹤0.01% 1907
2015
Q3
$82K Buy
74
+5
+7% +$9.12K ﹤0.01% 1769
2015
Q2
$150K Buy
69
+20
+41% +$40.7K ﹤0.01% 1727
2015
Q1
$77K Sell
49
-11
-18% -$14.5K ﹤0.01% 1823
2014
Q4
$71K Sell
60
-2,181
-97% -$1.46M ﹤0.01% 1823
2014
Q3
$1.04M Buy
2,241
+2,206
+6,303% +$1.02M ﹤0.01% 1202
2014
Q2
$17K Buy
35
+18
+106% +$5.77K ﹤0.01% 2464
2014
Q1
$5K Sell
17
-2,851
-99% -$864K ﹤0.01% 3040
2013
Q4
$779K Buy
2,868
+2,857
+25,973% +$798K ﹤0.01% 1233
2013
Q3
$4K Buy
+11
New +$4.08K ﹤0.01% 3033

Other funds holding BLUE

BlackRock's BLUE Position: Q2 2025 in Review

BlackRock sold out of bluebird bio (BLUE) in Q2 2025, closing a stake of 697,973 shares — an estimated $3.41M sold.

BlackRock first reported a position in BLUE in Q3 2013 and held it in 47 quarters. The position peaked at $682M in Q4 2017. 3 funds tracked by Wall St. Rank hold BLUE as of Q2 2025.

  • BlackRock reported no remaining bluebird bio position as of Q2 2025 after selling out during the quarter.
  • BlackRock sold 697,973 bluebird bio shares in Q2 2025, an estimated $3.41M.
  • BlackRock first reported a position in bluebird bio in Q3 2013 and held it in 47 quarters.
  • BlackRock's bluebird bio position peaked at $682M in Q4 2017.
  • 3 funds tracked by Wall St. Rank held bluebird bio as of Q2 2025.

Based on BlackRock's 13F filing for Q2 2025, filed 12 Aug 2025.