---
title: "Sector Update: Healthcare Stocks Mixed in Afternoon Trading"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/285980665.md"
description: "Healthcare stocks showed mixed performance on May 11, 2026, with the NYSE Healthcare Index up 0.2%. Moderna's shares fell 2.2% as it works on early-stage hantavirus vaccines. Sonida Senior Living reported a Q1 loss of $2.39 per share, leading to a 3.6% drop in its stock. In contrast, Erasca's shares rose 3.3% after announcing a collaboration with Merck for a clinical trial, while Merck's stock increased by 1.2%."
datetime: "2026-05-11T17:57:00.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/285980665.md)
  - [en](https://longbridge.com/en/news/285980665.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/285980665.md)
---

# Sector Update: Healthcare Stocks Mixed in Afternoon Trading

01:57 PM EDT, 05/11/2026 (MT Newswires) -- Healthcare stocks were mixed Monday afternoon with the NYSE Healthcare Index rising 0.2% and the State Street Healthcare Select Sector SPDR ETF (XLV) little changed, paring earlier losses.

The iShares Biotechnology ETF (IBB) increased 0.3%.

In corporate news, Moderna ( MRNA ) has been working on early-stage vaccines targeting hantaviruses, Bloomberg reported Friday, citing a company statement. The research began before recent infections were reported aboard the Dutch-flagged Hondius, the report said. Moderna ( MRNA ) shares fell 2.2%.

Sonida Senior Living ( SNDA ) shares fell 3.6% after the company reported Q1 loss of $2.39 per diluted share, widening from the loss of $0.77 a year earlier. Three analysts polled by FactSet expected a loss of $1.53.

Erasca ( ERAS ) entered a clinical trial collaboration and supply agreement with Merck ( MRK ) to study its investigational drug ERAS-0015 in combination with Keytruda in patients with RAS-mutant solid tumors. Erasca ( ERAS ) shares rose 3.3%, and Merck ( MRK ) added 1.2%.

MT Newswires does not provide investment advice. Unauthorized reproduction is strictly prohibited.

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