Granahan Investment Management’s Repligen RGEN Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $10.2M | Buy |
86,953
+14,951
| +21% | +$2.09M | 0.5% | 55 |
|
|
2025
Q4 | $11.8M | Buy |
72,002
+2,131
| +3% | +$334K | 0.51% | 55 |
|
|
2025
Q3 | $9.34M | Sell |
69,871
-65,175
| -48% | -$7.92M | 0.38% | 65 |
|
|
2025
Q2 | $16.8M | Buy |
135,046
+33,849
| +33% | +$4.31M | 0.68% | 41 |
|
|
2025
Q1 | $12.9M | Sell |
101,197
-6,218
| -6% | -$957K | 0.64% | 51 |
|
|
2024
Q4 | $15.5M | Buy |
107,415
+19,160
| +22% | +$2.75M | 0.65% | 47 |
|
|
2024
Q3 | $13.1M | Buy |
+88,255
| New | +$12.7M | 0.52% | 58 |
|
|
2024
Q2 | – | Sell |
-124,765
| Closed | -$22.9M | – | 196 |
|
|
2024
Q1 | $22.9M | Sell |
124,765
-4,921
| -4% | -$937K | 0.81% | 36 |
|
|
2023
Q4 | $23.3M | Sell |
129,686
-3,072
| -2% | -$478K | 0.77% | 39 |
|
|
2023
Q3 | $21.1M | Sell |
132,758
-18,014
| -12% | -$2.94M | 0.75% | 38 |
|
|
2023
Q2 | $21.3M | Buy |
150,772
+39,632
| +36% | +$6.35M | 0.66% | 46 |
|
|
2023
Q1 | $18.7M | Buy |
111,140
+3,474
| +3% | +$620K | 0.57% | 56 |
|
|
2022
Q4 | $18.2M | Buy |
107,666
+40,344
| +60% | +$7.32M | 0.56% | 49 |
|
|
2022
Q3 | $12.6M | Sell |
67,322
-56,100
| -45% | -$11.8M | 0.41% | 69 |
|
|
2022
Q2 | $20M | Buy |
123,422
+99,947
| +426% | +$15.8M | 0.68% | 36 |
|
|
2022
Q1 | $4.42M | Buy |
+23,475
| New | +$4.46M | 0.11% | 138 |
|
|
2021
Q3 | – | Sell |
-3,976
| Closed | -$794K | – | 199 |
|
|
2021
Q2 | $794K | Sell |
3,976
-32,552
| -89% | -$6.31M | 0.01% | 188 |
|
|
2021
Q1 | $7.1M | Buy |
36,528
+9,847
| +37% | +$2.02M | 0.15% | 117 |
|
|
2020
Q4 | $5.11M | Sell |
26,681
-103,269
| -79% | -$18.8M | 0.11% | 131 |
|
|
2020
Q3 | $19.2M | Sell |
129,950
-37,281
| -22% | -$5.33M | 0.65% | 45 |
|
|
2020
Q2 | $21.3M | Sell |
167,231
-35,883
| -18% | -$4.22M | 0.77% | 35 |
|
|
2020
Q1 | $19.6M | Sell |
203,114
-38,552
| -16% | -$3.72M | 1.06% | 22 |
|
|
2019
Q4 | $22.4M | Sell |
241,666
-1,022
| -0.4% | -$85.9K | 1.03% | 26 |
|
|
2019
Q3 | $18.6M | Sell |
242,688
-13,067
| -5% | -$1.14M | 1.02% | 26 |
|
|
2019
Q2 | $22M | Sell |
255,755
-22,041
| -8% | -$1.5M | 1.09% | 27 |
|
|
2019
Q1 | $16.4M | Buy |
277,796
+11,994
| +5% | +$690K | 0.88% | 37 |
|
|
2018
Q4 | $14M | Sell |
265,802
-1,514
| -0.6% | -$88.8K | 0.99% | 35 |
|
|
2018
Q3 | $14.8M | Buy |
267,316
+89,157
| +50% | +$4.6M | 0.8% | 41 |
|
|
2018
Q2 | $8.38M | Buy |
178,159
+19,230
| +12% | +$791K | 0.5% | 66 |
|
|
2018
Q1 | $5.75M | Buy |
158,929
+129,230
| +435% | +$4.54M | 0.42% | 84 |
|
|
2017
Q4 | $1.08M | Buy |
+29,699
| New | +$1.08M | 0.08% | 165 |
|
Other funds holding RGEN
UCFA
VCM
VPM
MC
Granahan Investment Management's RGEN Position: Q1 2026 in Review
Granahan Investment Management increased its Repligen (RGEN) stake by 21% in Q1 2026, buying an estimated $2.09M and bringing the position to 86,953 shares worth $10.2M. The position accounts for 0.5% of the portfolio, ranked #55.
Granahan Investment Management first reported a position in RGEN in Q4 2017 and has held it in 31 quarters since. The position peaked at $23.3M in Q4 2023. 441 funds tracked by Wall St. Rank hold RGEN as of Q1 2026.
- Granahan Investment Management held 86,953 shares of Repligen worth $10.2M as of Q1 2026.
- Granahan Investment Management bought 14,951 Repligen shares in Q1 2026, an estimated $2.09M.
- Repligen made up 0.5% of Granahan Investment Management's portfolio in Q1 2026, its #55 holding.
- Granahan Investment Management first reported a position in Repligen in Q4 2017 and has held it in 31 quarters since.
- Granahan Investment Management's Repligen position peaked at $23.3M in Q4 2023.
- 441 funds tracked by Wall St. Rank held Repligen as of Q1 2026.
Based on Granahan Investment Management's 13F filing for Q1 2026, filed 15 May 2026.