RGEN
Repligen Corp
4 of the 83 super-investors we track hold RGEN, worth a combined $338M per their latest 13F filings. The largest position: Lee Ainslie at 2.4% of their portfolio. This quarter the cohort logged 2 buys and 0 sells on the name. Conviction score: 30 of 100 (how strongly the cohort backs it) — ranked #377 of 742 stocks. Conviction rising: 1 more super-investor hold it than in 2026Q1.
Why super-investors own RGEN
RGEN is held by 4 super-investors in our cohort, with a combined position value of $338M. The highest-conviction owner is Lee Ainslie at 2.4% of their portfolio. Cohort ownership has grown from 1 to 4 over the last four quarters — net interest is rising. This quarter the cohort registered 1 new positions, 1 added.
AI-synthesized from 13F filings. Not investment advice.
Cohort owners over time
2016Q3 → 2026Q2How many of the cohort members held this stock each quarter.
Owners (4) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Lee Ainslie | 2.4% | 3q | $271M | 1,984,554 |
| 2 | Joel Greenblatt | <0.1% | 36q | $51M | 376,309 |
| 3 | Stanley Druckenmiller | 0.2% | — 1q | $11M | 77,400 |
| 4 | Wallace Weitz | 0.4% | 2q | $6M | 40,800 |
Owners of RGEN also hold
Congress is trading RGEN
Congress tracker →- Lisa McClainsold$1,001 - $15,000 · 2025-10-31
- Lisa McClainsold$1,001 - $15,000 · 2025-10-30
- Lisa McClainbought$1,001 - $15,000 · 2025-10-30
- Lisa McClainbought$1,001 - $15,000 · 2025-07-22
- Lisa McClainsold$1,001 - $15,000 · 2025-06-17 · late
- Lisa McClainbought$1,001 - $15,000 · 2025-06-11 · late
STOCK Act periodic transaction reports; amounts are disclosed ranges. Who files late →
Recent activity (2)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Stanley Druckenmiller | NEW | 0.2% | +100% | $11M | Aug 14, 2026 |
| Wallace Weitz | ADD | 0.4% | +60% | $6M | Aug 12, 2026 |
Long US equity 13F-HR filings only. CUSIP 759916109. Not investment advice.