---
title: "Top Stock Gainers Today, 5/18/26"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/286816657.md"
description: "On May 18, 2026, the S&P 500 fell due to inflation concerns and high oil prices. The energy sector performed best, driven by supply concerns and geopolitical risks, with notable gains in SLB, Valero Energy, and Baker Hughes. Conversely, the information technology sector faced losses, particularly in memory and photonics stocks, while software stocks like ServiceNow and Cognizant saw gains."
datetime: "2026-05-18T20:02:31.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/286816657.md)
  - [en](https://longbridge.com/en/news/286816657.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/286816657.md)
---

# Top Stock Gainers Today, 5/18/26

The S&P 500 (SPX) fell Monday as inflation concerns and high oil prices weighed on stocks.

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Let's break down the sectors behind the performance.

## **Today's Top-Performing Sector**

Energy was the top-performing sector on Monday, despite Brent crude oil (BZ) reversing its 2.5% gain after President Trump called off a scheduled attack on Iran. With traffic through the Strait of Hormuz still at a near standstill, supply concerns continue to support the sector. Elevated geopolitical risk is also keeping a floor under oil prices, boosting energy stocks.

Several energy stocks led the sector's gains, including:

-   SLB (SLB)
-   Valero Energy (VLO)
-   Baker Hughes Company (BKR)
-   APA (APA)
-   Phillips 66 (PSX)

## **Today's Worst-Performing Sector**

Meanwhile, the information technology sector faced the largest drawdown, highlighted by losses in memory and photonics stocks. These two industries have surged in recent weeks and appear to be seeing profit-taking as investors rotate out of recent winners. In contrast, software stocks roared higher, led by gains in ServiceNow (NOW) and Cognizant (CTSH).

Notable information technology stocks trading lower include:

-   Lumentum (LITE)
-   Corning (GLW)
-   Seagate Technology (STX)
-   Micron (MU)
-   SanDisk (SNDK)

### Related Stocks

- [BKR.US](https://longbridge.com/en/quote/BKR.US.md)
- [SLB.US](https://longbridge.com/en/quote/SLB.US.md)
- [VDE.US](https://longbridge.com/en/quote/VDE.US.md)
- [DIG.US](https://longbridge.com/en/quote/DIG.US.md)
- [IEZ.US](https://longbridge.com/en/quote/IEZ.US.md)
- [CRAK.US](https://longbridge.com/en/quote/CRAK.US.md)
- [ERX.US](https://longbridge.com/en/quote/ERX.US.md)
- [IXC.US](https://longbridge.com/en/quote/IXC.US.md)
- [XES.US](https://longbridge.com/en/quote/XES.US.md)
- [ENFR.US](https://longbridge.com/en/quote/ENFR.US.md)
- [.SPX.US](https://longbridge.com/en/quote/.SPX.US.md)
- [QQQ.US](https://longbridge.com/en/quote/QQQ.US.md)
- [VLO.US](https://longbridge.com/en/quote/VLO.US.md)
- [APA.US](https://longbridge.com/en/quote/APA.US.md)
- [PSX.US](https://longbridge.com/en/quote/PSX.US.md)
- [NOW.US](https://longbridge.com/en/quote/NOW.US.md)
- [CTSH.US](https://longbridge.com/en/quote/CTSH.US.md)
- [LITE.US](https://longbridge.com/en/quote/LITE.US.md)
- [GLW.US](https://longbridge.com/en/quote/GLW.US.md)
- [STX.US](https://longbridge.com/en/quote/STX.US.md)
- [MU.US](https://longbridge.com/en/quote/MU.US.md)
- [SNDK.US](https://longbridge.com/en/quote/SNDK.US.md)
- [SNDKV.US](https://longbridge.com/en/quote/SNDKV.US.md)

## Related News & Research

- [BUZZ-Energy tech firm Babcock & Wilcox slides on $200 mln stock offering](https://longbridge.com/en/news/286464561.md)
- [Capital Economics sees oil at $150 per barrel through 2027 in an extreme case](https://longbridge.com/en/news/286549728.md)
- [America’s energy comeback is leaving green fantasies behind](https://longbridge.com/en/news/286571543.md)
- [ROI-ENERGY WATCH: Alarms and clocks](https://longbridge.com/en/news/286796437.md)
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