Repligen Corporation (RGEN) shares tumbled 6.1% to $170.02 as of September 2, 2026, a significant decline from the prior close of $180.98. BestStocks flagged the session as a major change for RGEN. The move is tied to price move down. Below, we break down what changed for RGEN, why it matters for investors, how the stock reacted, and the catalysts on the calendar.
What happened
RGEN fell 6.1% to $170.02
RGEN tumbled 6.1% in its latest session, moving from $180.98 to $170.02.
Material / EarningsMedium confidence
Rel. volume
1.2×
Normal
Vs peers
—
No comparable peers
Market cap
$9.6B
NASDAQ Global Select
Analyst target
$152
-10.6% vs price
Price chart
Aug 3 – Sep 2
E earnings
F filing
A analyst
V/N other
click a marker to highlight
Change events — click to jump to details
What it means for Repligen Corporation investors
For Repligen Corporation investors, the recent signals add up to a bearish shift. On the constructive side: Positive price momentum; Positive price momentum. Weighing against that: Material negative event; Sharp 6.1% decline — elevated risk. Wall Street's consensus price target sits at $152.00, implying -10.6% downside from $170.02. Over the past 90 days analysts logged 1 upgrade and 0 downgrades. BestStocks rates the overall signal quality medium (60/100). With earnings roughly 62 days out, the next report is the most likely near-term test of the move.
RGEN price reaction
RGEN last traded at $170.02, down $10.96 (-6.06%) from the previous close of $180.98. The session traded on 1.2× average volume (normal), so participation was unremarkable. Over the past month the stock has ranged between $147.06 and $182.03, and it currently sits about 66% of the way up that band.
Bullish and bearish analyst opinions on Repligen Corporation (RGEN)
The consensus analyst price target on Repligen Corporation (RGEN) is $152.00, 10.6% below the recent $170.02. Over the past 90 days analysts logged 1 upgrade, 3 maintains, and 0 downgrades. Here is how the bullish and bearish cases on RGEN line up.
▲ The bullish case
+1 analyst upgrade in the past 90 days, most recently Benchmark to Buy (2026-07-07).
+Positive price momentum.
▼ The bearish case
−The consensus analyst price target of $152.00 sits 10.6% below the recent $170.02, so the average target sees limited room to run.
−The most bearish analyst target is $142.00 (-16.5%).
−Material negative event.
−Sharp 6.1% decline — elevated risk.
−Repligen Corporation (RGEN) moved -5.84% from $145.49 to $136.99 on 2026-07-21.
Bull vs bear balanceBearish Shift
BearishNeutralBullish
Weighing both sides, BestStocks' composite read of recent signals is bearish, as the bull-versus-bear meter above shows. This is an educational summary of the bull and bear case, not investment advice.
Analyst price targets and ratings are FMP consensus figures as of Sep 2, 2026; other aggregators may differ. High and low targets show the range of estimates, not forecasts.
Repligen Corporation (RGEN) moved +3.87% from $174.23 to $180.98 on 2026-08-31. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. Volume remained near its 5-day average, suggesting the move lacked unusual trading momentum.
Material / Earnings2026-08-20+2.2%
Repligen Corporation (RGEN) moved +3.69% from $173.87 to $180.29 on 2026-08-20. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. The move coincided with volume 1.8x the 5-day average and a new 30-day high.
Material / Earnings2026-08-19+6.1%
Repligen Corporation (RGEN) moved +2.10% from $172.74 to $176.36 on 2026-08-19. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. The move coincided with elevated volume at 2.8x the 5-day average and a new 30-day high, suggesting technical buying momentum.
Material / Earnings2026-08-17+1.3%
Repligen Corporation (RGEN) moved +2.18% from $165.44 to $169.04 on 2026-08-17, reaching a new 30-day high. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found.
Material / Earnings2026-08-07+2.8%
Repligen Corporation (RGEN) moved +2.44% from $160.00 to $163.90 on 2026-08-07, reaching a new 30-day high. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found.
Material / Earnings2026-08-06+0.5%
RGEN moved +2.07% from its $156.21 open to a $159.44 close on 2026-08-06.
Material / Earnings2026-08-05+5.9%
Repligen Corporation (RGEN) moved +5.73% from $150.00 to $158.59 on 2026-08-05, reaching a new 30-day high. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. The move appears driven by technical factors, with volume near its 5-day average.
Material / Earnings2026-08-04+1.8%
Repligen Corporation (RGEN) moved +2.06% from $146.76 to $149.78 on August 4, 2026. We checked news, earnings, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. The move appears to be technical, with RGEN reaching a new 30-day high on volume near its 5-day average.
In-depth RGEN event analyses
Permanent, dated analyses of RGEN's most significant sessions.
RGEN tumbled 6.1% to $170.02. No single company-specific catalyst was confirmed during the move window, and it looks technical.
How much did RGEN stock fall?
RGEN lost 6.06% ($10.96) versus the prior close of $180.98, last trading at $170.02 on 1.2× average volume.
When is Repligen Corporation's next earnings date?
RGEN's next earnings report is estimated for 2026-11-03 — about 62 days away.
What is the analyst price target for RGEN?
The consensus analyst price target for RGEN is $152.00, about 10.6% below the current $170.02. Over the past 90 days, analysts recorded 1 upgrade, 3 maintains, and 0 downgrades.
How BestStocks tracks RGEN
This page is generated automatically by BestStocks' change-detection system after price move down was detected and verified against independent data sources. It draws on 20 tracked change events for RGEN, cross-checked against the data sources listed below. Price, volume, and market-capitalization figures are the live intraday quote as of September 2, 2026 and refresh as new information is detected; for companies with multiple share classes, market-cap figures can differ by data source. Analyst price targets and ratings are FMP consensus. This is an educational summary of what changed and why — not personalized investment advice.
