TCM
BLUE

Tang Capital Management’s bluebird bio BLUE Stock Holding History

Tang Capital Management’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
2025
Q2 		– Sell
-400,000
Closed -$1.95M – 205
2025
Q1 		$1.95M Buy
+400,000
New +$2.41M 0.11% 122
2024
Q2 		– Sell
-125,000
Closed -$3.2M – 131
2024
Q1 		$3.2M Buy
125,000
+40,000
+47% +$1.03M 0.33% 66
2023
Q4 		$2.35M Sell
85,000
-129,141
-60% -$7.87M 0.22% 87
2023
Q3 		$13M Sell
214,141
-155,000
-42% -$10.9M 1.84% 15
2023
Q2 		$24.3M Sell
369,141
-125,000
-25% -$9.14M 3.58% 6
2023
Q1 		$31.4M Buy
494,141
+262,365
+113% +$30M 4.68% 2
2022
Q4 		$32.1M Sell
231,776
-85,000
-27% -$12M 4.66% 3
2022
Q3 		$40.1M Buy
316,776
+21,242
+7% +$2.4M 4.92% 3
2022
Q2 		$24.5M Buy
295,534
+218,034
+281% +$16.9M 3.71% 9
2022
Q1 		$7.52M Buy
+77,500
New +$10.2M 1.5% 19

Other funds holding BLUE

Russell Investments Group
Russell Investments Group London, United Kingdom $93.1B AUM 28.26% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return
IA
IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

Tang Capital Management's BLUE Position: Q2 2025 in Review

Tang Capital Management sold out of bluebird bio (BLUE) in Q2 2025, closing a stake of 400,000 shares — an estimated $1.95M sold.

Tang Capital Management first reported a position in BLUE in Q1 2022 and held it in 10 quarters. The position peaked at $40.1M in Q3 2022. 3 funds tracked by Wall St. Rank hold BLUE as of Q2 2025.

  • Tang Capital Management reported no remaining bluebird bio position as of Q2 2025 after selling out during the quarter.
  • Tang Capital Management sold 400,000 bluebird bio shares in Q2 2025, an estimated $1.95M.
  • Tang Capital Management first reported a position in bluebird bio in Q1 2022 and held it in 10 quarters.
  • Tang Capital Management's bluebird bio position peaked at $40.1M in Q3 2022.
  • 3 funds tracked by Wall St. Rank held bluebird bio as of Q2 2025.

Based on Tang Capital Management's 13F filing for Q2 2025, filed 14 Aug 2025.