Walleye Trading’s Repligen RGEN Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $40.9K | Buy |
+300
| New | +$36.9K | ﹤0.01% | 3633 |
|
|
2026
Q1 | – | Sell |
-3,400
| Closed | -$557K | – | 4604 |
|
|
2025
Q4 | $557K | Buy |
3,400
+1,700
| +100% | +$266K | ﹤0.01% | 2759 |
|
|
2025
Q3 | $227K | Hold |
1,700
| – | – | ﹤0.01% | 3283 |
|
|
2025
Q2 | $211K | Hold |
1,700
| – | – | ﹤0.01% | 3204 |
|
|
2025
Q1 | $216K | Sell |
1,700
-11,700
| -87% | -$1.8M | ﹤0.01% | 3042 |
|
|
2024
Q4 | $1.93M | Buy |
13,400
+2,800
| +26% | +$402K | ﹤0.01% | 1716 |
|
|
2024
Q3 | $1.58M | Sell |
10,600
-1,400
| -12% | -$201K | ﹤0.01% | 1821 |
|
|
2024
Q2 | $1.51M | Sell |
12,000
-27,500
| -70% | -$4.31M | ﹤0.01% | 1782 |
|
|
2024
Q1 | $7.26M | Sell |
39,500
-18,500
| -32% | -$3.52M | 0.02% | 888 |
|
|
2023
Q4 | $10.4M | Buy |
58,000
+25,000
| +76% | +$3.89M | 0.02% | 764 |
|
|
2023
Q3 | $5.25M | Buy |
33,000
+15,500
| +89% | +$2.53M | 0.01% | 1088 |
|
|
2023
Q2 | $2.48M | Buy |
17,500
+16,500
| +1,650% | +$2.65M | 0.01% | 1489 |
|
|
2023
Q1 | $168K | Buy |
+1,000
| New | +$178K | ﹤0.01% | 3627 |
|
|
2022
Q1 | – | Sell |
-400
| Closed | -$106K | – | 5828 |
|
|
2021
Q4 | $106K | Sell |
400
-5,700
| -93% | -$1.54M | ﹤0.01% | 4338 |
|
|
2021
Q3 | $1.76M | Buy |
6,100
+300
| +5% | +$77K | 0.01% | 1717 |
|
|
2021
Q2 | $1.16M | Buy |
5,800
+3,700
| +176% | +$718K | ﹤0.01% | 1993 |
|
|
2021
Q1 | $408K | Buy |
2,100
+1,300
| +163% | +$267K | ﹤0.01% | 2861 |
|
|
2020
Q4 | $153K | Buy |
800
+700
| +700% | +$127K | ﹤0.01% | 3696 |
|
|
2020
Q3 | $15K | Sell |
100
-600
| -86% | -$85.8K | ﹤0.01% | 3863 |
|
|
2020
Q2 | $87K | Buy |
+700
| New | +$82.3K | ﹤0.01% | 3584 |
|
|
2020
Q1 | – | Sell |
-11,600
| Closed | -$1.07M | – | 4455 |
|
|
2019
Q4 | $1.07M | Buy |
11,600
+10,100
| +673% | +$848K | 0.01% | 1744 |
|
|
2019
Q3 | $115K | Sell |
1,500
-9,300
| -86% | -$813K | ﹤0.01% | 3274 |
|
|
2019
Q2 | $928K | Buy |
10,800
+8,100
| +300% | +$552K | 0.01% | 1660 |
|
|
2019
Q1 | $160K | Sell |
2,700
-11,500
| -81% | -$661K | ﹤0.01% | 3192 |
|
|
2018
Q4 | $749K | Buy |
14,200
+1,300
| +10% | +$76.2K | 0.01% | 2041 |
|
|
2018
Q3 | $715K | Sell |
12,900
-500
| -4% | -$25.8K | ﹤0.01% | 2474 |
|
|
2018
Q2 | $630K | Sell |
13,400
-13,700
| -51% | -$564K | ﹤0.01% | 2597 |
|
|
2018
Q1 | $980K | Buy |
27,100
+22,300
| +465% | +$784K | 0.01% | 1950 |
|
|
2017
Q4 | $174K | Buy |
+4,800
| New | +$174K | ﹤0.01% | 3550 |
|
Other funds holding RGEN
UCFA
MC
WA
Walleye Trading's RGEN Position: Q2 2026 in Review
Walleye Trading opened a new position in Repligen (RGEN) in Q2 2026: 43,268 shares worth $5.9M. The stake represents 0.01% of the portfolio and ranks #1201 among its holdings. This is a return to the name: Walleye Trading previously reported a position in RGEN as recently as Q4 2025.
Walleye Trading first reported a position in RGEN in Q2 2015 and has held it in 21 quarters since. 482 funds tracked by Wall St. Rank hold RGEN as of Q2 2026.
- Walleye Trading held 43,268 shares of Repligen worth $5.9M as of Q2 2026.
- Repligen was a new Walleye Trading position in Q2 2026.
- Repligen made up 0.01% of Walleye Trading's portfolio in Q2 2026, its #1201 holding.
- Walleye Trading first reported a position in Repligen in Q2 2015 and has held it in 21 quarters since.
- 482 funds tracked by Wall St. Rank held Repligen as of Q2 2026.
Based on Walleye Trading's 13F filing for Q2 2026, filed 3 Aug 2026.