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REGN
NASDAQ Life Sciences

Pfizer's Mid-Stage Tilrekimig Data Poses Threat to Regeneron's Dupixent, Shares Dip

Tom Rudovsky · Reported by Wiseek News
More coverage: Biotech Stocks · Healthcare
Sentiment info
Negative
Importance info
7
Price
$774.66
Mkt Cap
$81.884B
52W Low
$476.487
52W High
$821.11
52W Position info
63% above low
Off High info
5.7% below high
Rel. Volume info
0.5× avg
Market data snapshot near publication time

REGN sits 63% above its 52-week low of $476.487.

Summary

Regeneron's stock is down approximately 1.2% in premarket trading following Pfizer's announcement of mid-stage data for tilrekimig, a potential competitor to Regeneron's blockbuster drug, Dupixent. Pfizer anticipates late-stage results in 2027-28. Separately, Regeneron has expanded its development portfolio by adding new programs in neurology and ophthalmology. While the pipeline expansion is a positive long-term strategic move, the immediate market reaction is driven by the competitive threat to Dupixent, a key revenue driver for Regeneron. This news introduces a new negative catalyst, contrasting with recent positive developments for Regeneron's other pipeline assets. Traders will closely watch Pfizer's progress with tilrekimig and any further details on Regeneron's new therapeutic programs.

At the time of this announcement, REGN was trading at $774.66 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $81.9B. The 52-week trading range was $476.49 to $821.11. This news item was assessed with negative market sentiment and an importance score of 7 out of 10. Source: Wiseek News.


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REGN - Latest Insights

REGN
Oct 01, 2026, 2:34 AM EDT
Source: Seeking Alpha
Importance Score:
7
Price at Filing: $759.00
Real-time Price: $759.00 info
Change: $0 (0%) info
Market Cap: $78.068B info
REGN
Oct 01, 2026, 1:00 AM EDT
Source: GlobeNewswire
Importance Score:
8
Price at Filing: $759.00
Real-time Price: $759.00 info
Change: $0 (0%) info
Market Cap: $78.068B info
REGN
Sep 30, 2026, 4:14 PM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $753.00
Real-time Price: $759.00 info
Change: +$6.00 (+0.80%) info
Market Cap: $78.068B info
REGN
Aug 19, 2026, 1:58 PM EDT
Source: GlobeNewswire
Importance Score:
9
Price at Filing: $840.51
Real-time Price: $759.00 info
Change: -$81.51 (-10%) info
Market Cap: $78.068B info
REGN
Aug 07, 2026, 4:11 PM EDT
Filing Type: 13F-HR
Importance Score:
7
Price at Filing: $784.36
Real-time Price: $759.00 info
Change: -$25.36 (-3%) info
Market Cap: $78.068B info