$RGEN
Repligen Corp
XNAS•Health Care•Biological Products, (No Diagnostic Substances)
Why is RGEN down today? It is at $180.30 (-0.77%), and our scanner flagged it 54 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment RGEN spikes, and full due diligence on RGEN — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $180.30
- Change today
- -0.77%
- Previous close
- $181.69
- 52-week range
- $100.99 – $188.73
- Market cap
- $10.18B
- Institutional own.
- 99.9%
- Total held
- 100.0%
- Short interest
- 6.1M ▼ -1% vs prior · as of 2026-08-14
- Days to cover
- 6.4d
- Avg daily volume
- 964K
- Sector
- Health Care
- Industry
- Biological Products, (No Diagnostic Substances)
- Exchange
- XNAS
- 5m
- 0.2x
- 15m
- 0.2x
- 1h
- 0.2x
- 1D
- 0.1x
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Why is $RGEN down today?
Here is the latest on RGEN from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for RGEN today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Likely catalystMerger / acquisition agreement, from an SEC filing. Read it →Latest filingS-4Filing (S-4)Aug 25, 2026 · 2 days agoInsiders
Insiders selling0 buys, 3 sells last 3 months (16/27 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Loeillot Olivier Officer | Sold (automatic/other) | -5K | sold 9.1% | 54K | $977K at $180.00 | Aug 20, 26 |
Loeillot Olivier Officer | Other | 5K | added 10% | 60K | $769K at $141.79 | Aug 20, 26 |
Garland Jason K Officer | Sold (automatic/other) | -530 | sold 2.7% | 19K | $80K at $150.00 | Jul 16, 26 |
Garland Jason K Officer | Sold (automatic/other) | -733 | sold 3.6% | 19K | $106K at $145.00 | Jun 25, 26 |
Muir Glenn P Director | Acquired (grant/award) | +995 | added 2.5% | 40K | n/a | May 14, 26 |
Dawes Karen A Director | Acquired (grant/award) | +995 | added 1.1% | 93K | n/a | May 14, 26 |
Barthelemy Nicolas Director | Acquired (grant/award) | +995 | added 22% | 5K | n/a | May 14, 26 |
Konstantinov Konstantin Director | Acquired (grant/award) | +995 | added 34% | 4K | n/a | May 14, 26 |
Pax Margaret Director | Acquired (grant/award) | +995 | added 49% | 3K | n/a | May 14, 26 |
Eglinton Manner Carrie Director | Acquired (grant/award) | +995 | added 22% | 5K | n/a | May 14, 26 |
Madaus Martin D Director | Acquired (grant/award) | +995 | added 18% | 7K | n/a | May 14, 26 |
Mhatre Rohin Director | Acquired (grant/award) | +995 | added 25% | 5K | n/a | May 14, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
$RGEN Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$RGEN Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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RGEN stock FAQ
Why is $RGEN down today?
Here is the latest on RGEN from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for RGEN today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
What is the RGEN stock price today?
RGEN last traded at $180.30, down 0.77% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live RGEN alerts?
The RGEN Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged RGEN 54 times in the last 30 days.
What exchange is RGEN on?
RGEN (Repligen Corp) trades on XNAS, with a market cap of about $10.18B in the BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES) sector.
Is RGEN good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge RGEN for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.