<div id="readability-page-1"><p>The S&amp;P 500 (SPX) fell Monday as inflation concerns and high oil prices weighed on stocks.</p><h3>Claim 55% Off TipRanks</h3>New trading tool for QQQ bulls <p>Let's break down the sectors behind the performance.</p> <h2><strong>Today's Top-Performing Sector </strong></h2> <p>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.</p> <p>Several energy stocks led the sector's gains, including:</p> <ul> <li>SLB (SLB)</li> <li>Valero Energy (VLO)</li> <li>Baker Hughes Company (BKR)</li> <li>APA (APA)</li> <li>Phillips 66 (PSX)</li> </ul> <h2><strong>Today's Worst-Performing Sector </strong></h2> <p>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).</p> <p>Notable information technology stocks trading lower include:</p> <ul> <li>Lumentum (LITE)</li> <li>Corning (GLW)</li> <li>Seagate Technology (STX)</li> <li>Micron (MU)</li> <li>SanDisk (SNDK)</li> </ul></div>

CRAK

ENFR

<p>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.</p>

Tip Ranks

Baker Hughes

VG Energy

ProShares Ultra Energy

iShares US Oil Equip & Svcs

VanEck Oil Refiners ETF

Direxion Daily Energy Bull 2X

ISHRS S&P Glb Engy

SPDR O&G Equip

Alerian Energy Infrastructure ETF

S&P 500

Invesco QQQ Trust

Valero Energy Corp New

Phillips 66

ServiceNow

Cognizant Tech Solutions

Lumentum

Corning

Seagate Tech

Micron Tech

Sandisk

Sandisk - WI

Top Stock Gainers Today, 5/18/26