RGEN
Repligen CorpCompany with tickers: RGEN
Market Cap
$7.81B
Shares Outstanding
56,407,740
CIK
730272
CUSIP
759916109
13F Activity (30d)
20 filings
10 filers
Website
Visit website
Investor Relations
Investor relations
Total shares sold short and not yet covered, reported to FINRA by broker-dealers and published twice a month (bi-monthly). Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.
Short Squeeze Score
84/100
Short interest 10.2% of shares — P89
Days to cover 6.4 — P81
Short-volume trend +10.4% — P81
Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-06-15). Equal-weight mean of the available factors.
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 2026-06-15 | 5,726,265 | 5,962,038 | -235,773 | 6.36 |
| 2026-05-29 | 5,962,038 | 5,695,614 | +266,424 | 4.89 |
| 2026-05-15 | 5,695,614 | 5,501,852 | +193,762 | 3.87 |
| 2026-04-30 | 5,501,852 | 5,486,281 | +15,571 | 4.98 |
| 2026-04-15 | 5,486,281 | 5,556,333 | -70,052 | 7.02 |
| 2026-03-31 | 5,556,333 | 4,340,746 | +1,215,587 | 6.26 |
| 2026-03-13 | 4,340,746 | 4,003,984 | +336,762 | 4.67 |
| 2026-02-27 | 4,003,984 | 4,048,179 | -44,195 | 5.05 |
| 2026-02-13 | 4,048,179 | 4,054,509 | -6,330 | 4.83 |
| 2026-01-30 | 4,054,509 | 3,923,966 | +130,543 | 6.77 |
| 2026-01-15 | 3,923,966 | 3,933,025 | -9,059 | 5.67 |
| 2025-12-31 | 3,933,025 | 4,120,083 | -187,058 | 7.59 |
| 2025-12-15 | 4,120,083 | 4,309,467 | -189,384 | 6.20 |
| 2025-11-28 | 4,309,467 | 4,085,106 | +224,361 | 6.32 |
| 2025-11-14 | 4,085,106 | 3,320,400 | +764,706 | 4.55 |
| 2025-10-31 | 3,320,400 | 3,382,265 | -61,865 | 2.68 |
| 2025-10-15 | 3,382,265 | 3,414,338 | -32,073 | 3.22 |
| 2025-09-30 | 3,414,338 | 3,541,604 | -127,266 | 3.85 |
| 2025-09-15 | 3,541,604 | 3,624,017 | -82,413 | 4.87 |
| 2025-08-29 | 3,624,017 | 3,898,921 | -274,904 | 5.44 |
| 2025-08-15 | 3,898,921 | 3,636,755 | +262,166 | 5.03 |
| 2025-07-31 | 3,636,755 | 3,398,315 | +238,440 | 3.07 |
| 2025-07-15 | 3,398,315 | 3,765,995 | -367,680 | 5.83 |
| 2025-06-30 | 3,765,995 | 3,391,049 | +374,946 | 4.38 |
Showing 1–24 of 24 settlements