Stock Market Update

[BRIEFING.COM] The S&P 500 (-0.4%), Nasdaq Composite (-0.5%), and DJIA (-0.2%) are modestly lower this morning as renewed U.S.-Iran geopolitical tensions over the weekend weigh on sentiment, while momentum in mega-cap and tech names cools following last week's rally. Underlying participation remains constructive, however, with the broader market leaning higher.

Stocks opened to modest losses as weekend developments put the next round of U.S.-Iran talks in limbo. The major averages hit session lows shortly before midday after President Trump told Bloomberg that it is "highly unlikely" he will extend the current ceasefire if a deal is not reached this week. Stocks quickly bounced off their worst levels following a New York Times report that an Iranian delegation is slated to head to Islamabad for the next round of talks with the U.S., suggesting that negotiations could still take place this week.

Oil prices have moved within a relatively narrow range since the stock market opened, with WTI crude currently up $4.85 (+5.9%) to $87.44 per barrel.

The bounce in oil gives a boost to the energy sector (+0.9%), while weighing on oil-sensitive stocks such as cruise lines and airlines.

Losses across names such as Norwegian Cruise Line (NCLH 20.14, -0.84, -4.03%) contribute to weakness in the consumer discretionary sector (-1.1%), though a poor showing from Tesla (TSLA 392.54, -8.08, -2.02%) ahead of its earnings this week is of greater consequence.

To that end, Amazon (AMZN 247.06, -3.50, -1.40%) also trades lower, with weakness across the mega-cap group putting pressure on the communication services (-1.1%) and information technology (-0.4%) sectors as well.

The Vanguard Mega Cap Growth ETF is down 0.7%.

The health care sector (-0.5%) has also spent the session in modestly negative territory, though the other seven S&P 500 sectors trade within 0.1% of their flat lines or higher, helping keep losses tame at the index level.

Notably, the S&P 500 Equal Weighted Index (+0.2%) is higher for the session, underscoring solid breadth despite today's index-level losses.

However, gains in the broader market are relatively modest, with the materials sector (+0.6%) being the only other sector besides energy trading more than 0.2% higher.

Steel Dynamics (STLD 210.42, +10.10, +5.04%) and Nucor (NUE 201.80, +5.94, +3.03%) hold solid gains after Cleveland-Cliffs' (CLF 9.64, -0.30, -2.97%) earnings results underscored rising energy and input cost pressures in more integrated steelmaking, reinforcing relative strength in lower-cost EAF producers.

Outside of the S&P 500, the Russell 2000 (+0.3%) and S&P Mid Cap 400 (+0.4%) are outperforming, further highlighting broader participation under the surface.

Ultimately, losses across mega-cap and tech spaces are not altogether too surprising, given the stellar leadership displayed over the past three weeks that took the major averages from near correction territory to fresh record highs. The Nasdaq Composite locked in a 13-session win streak with Friday's gain.

While the market will remain attuned to geopolitical headlines this week to see whether the next round of negotiations between the U.S. and Iran takes place, oil prices remain contained below $90 per barrel, helping to limit broader inflationary concerns that sent stocks sharply lower in March.

There is no economic data of note today.