BlackRock’s Generation Bio GBIO Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | – | Sell |
-60,070
| Closed | -$341K | – | 5730 |
|
|
2025
Q4 | $341K | Sell |
60,070
-46
| -0.1% | -$260 | ﹤0.01% | 4586 |
|
|
2025
Q3 | $368K | Sell |
60,116
-56,042
| -48% | -$290K | ﹤0.01% | 4538 |
|
|
2025
Q2 | $372K | Sell |
116,158
-224,360
| -66% | -$864K | ﹤0.01% | 4517 |
|
|
2025
Q1 | $1.38M | Sell |
340,518
-5,389
| -2% | -$37.9K | ﹤0.01% | 4094 |
|
|
2024
Q4 | $3.67M | Buy |
345,907
+4,307
| +1% | +$76.8K | ﹤0.01% | 3847 |
|
|
2024
Q3 | $8.44M | Buy |
341,600
+12,175
| +4% | +$322K | ﹤0.01% | 3493 |
|
|
2024
Q2 | $9.29M | Buy |
329,425
+24,540
| +8% | +$797K | ﹤0.01% | 3423 |
|
|
2024
Q1 | $12.4M | Sell |
304,885
-11,957
| -4% | -$282K | ﹤0.01% | 3240 |
|
|
2023
Q4 | $5.23M | Sell |
316,842
-18,532
| -6% | -$323K | ﹤0.01% | 3674 |
|
|
2023
Q3 | $12.7M | Sell |
335,374
-18,322
| -5% | -$868K | ﹤0.01% | 3186 |
|
|
2023
Q2 | $19.5M | Buy |
353,696
+9,060
| +3% | +$416K | ﹤0.01% | 3054 |
|
|
2023
Q1 | $14.8M | Sell |
344,636
-26,171
| -7% | -$1.27M | ﹤0.01% | 3115 |
|
|
2022
Q4 | $14.6M | Buy |
370,807
+9,202
| +3% | +$483K | ﹤0.01% | 3193 |
|
|
2022
Q3 | $19.2M | Buy |
361,605
+11,409
| +3% | +$714K | ﹤0.01% | 3053 |
|
|
2022
Q2 | $23M | Buy |
350,196
+33,315
| +11% | +$2.18M | ﹤0.01% | 3013 |
|
|
2022
Q1 | $23.3M | Buy |
316,881
+115
| +0% | +$6.66K | ﹤0.01% | 3082 |
|
|
2021
Q4 | $22.4M | Buy |
316,766
+4,252
| +1% | +$742K | ﹤0.01% | 3203 |
|
|
2021
Q3 | $78.3M | Buy |
312,514
+27,500
| +10% | +$6.58M | ﹤0.01% | 2365 |
|
|
2021
Q2 | $76.7M | Sell |
285,014
-6,332
| -2% | -$1.89M | ﹤0.01% | 2416 |
|
|
2021
Q1 | $82.9M | Buy |
291,346
+157,657
| +118% | +$50.5M | ﹤0.01% | 2293 |
|
|
2020
Q4 | $37.9M | Buy |
133,689
+66,565
| +99% | +$21.4M | ﹤0.01% | 2644 |
|
|
2020
Q3 | $20.7M | Buy |
67,124
+65,174
| +3,342% | +$15.6M | ﹤0.01% | 2839 |
|
|
2020
Q2 | $409K | Buy |
+1,950
| New | +$434K | ﹤0.01% | 4246 |
|
Other funds holding GBIO
BlackRock's GBIO Position: Q1 2026 in Review
BlackRock sold out of Generation Bio (GBIO) in Q1 2026, closing a stake of 60,070 shares — an estimated $341K sold.
BlackRock first reported a position in GBIO in Q2 2020 and held it in 23 quarters. The position peaked at $82.9M in Q1 2021. 2 funds tracked by Wall St. Rank hold GBIO as of Q1 2026.
- BlackRock reported no remaining Generation Bio position as of Q1 2026 after selling out during the quarter.
- BlackRock sold 60,070 Generation Bio shares in Q1 2026, an estimated $341K.
- BlackRock first reported a position in Generation Bio in Q2 2020 and held it in 23 quarters.
- BlackRock's Generation Bio position peaked at $82.9M in Q1 2021.
- 2 funds tracked by Wall St. Rank held Generation Bio as of Q1 2026.
Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.