Repligen
RGEN
484 hedge funds and large institutions have $9B invested in Repligen in 2026 Q2 according to their latest regulatory filings, with 98 funds opening new positions, 178 increasing their positions, 142 reducing their positions, and 56 closing their positions.
75% more first-time investments, than exits
New positions opened: 98 | Existing positions closed: 56
25% more repeat investments, than reductions
Existing positions increased: 178 | Existing positions reduced: 142
9% more funds holding
Funds holding: 446 → 484 (+38)
8% more capital inflows, than outflows
Capital inflows: $1.21B | Capital outflows: $1.12B
0.86% more ownership
Funds ownership: 116.24% → 117.11% (+0.86%)
17% less funds holding in top 10
Funds holding in top 10: 6 → 5 (-1)
45% less call options, than puts
Call options by funds: $36.9M | Put options by funds: $67.3M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
William Blair Investment Management
Chicago,
Illinois
|
+$96.9M |
| 2 |
Ameriprise
Minneapolis,
Minnesota
|
+$80M |
| 3 |
Holocene Advisors
New York
|
+$71.7M |
| 4 |
Maverick Capital
Dallas,
Texas
|
+$57.2M |
| 5 |
Fidelity Investments
Boston,
Massachusetts
|
+$54M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$384M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$88.8M |
| 3 |
BlackRock
New York
|
-$74.7M |
| 4 |
Vestal Point Capital
New York
|
-$64.5M |
| 5 |
Point72 Asset Management
Stamford,
Connecticut
|
-$49.6M |
RGEN Hedge Fund Activity: Q2 2026 in Review
484 of the 8,365 institutional investors tracked by Wall St. Rank reported a position in Repligen (RGEN) for Q2 2026, worth a combined $9B — up 16% from $7.75B a quarter earlier.
Buyers outnumbered sellers: 98 funds opened new RGEN positions and 56 closed out — a net gain of 42 holders — while 178 added to existing stakes and 142 trimmed.
The largest buyer was William Blair Investment Management, opening a new position worth an estimated $96.9M. The largest seller was T. Rowe Price Associates, cutting an estimated $384M.
- 484 institutional investors held Repligen (RGEN) as of Q2 2026, up from 446 in Q1 2026.
- Funds reported $9B of Repligen stock for Q2 2026, up 16% quarter-over-quarter.
- 98 funds opened new Repligen positions in Q2 2026 and 56 closed out, a net change of +42 holders.
- The largest Repligen buyer in Q2 2026 was William Blair Investment Management, an estimated $96.9M added.
- The largest Repligen seller in Q2 2026 was T. Rowe Price Associates, an estimated $384M sold.
Based on aggregated 13F filings for Q2 2026.