* Futures: Dow up 0.41%, S&P 500 down 0.21%, Nasdaq down

0.65%

* UPS down 2.1% after Q1 profit drops

* General Motors ( GM ) up 5% after raising forecast

* Coca-Cola rises 2%; lifts annual forecast

(Updates prices throughout)

By Niket Nishant and Utkarsh Hathi

April 28 (Reuters) - Futures tracking the benchmark S&P

500 and the tech-heavy Nasdaq 100 indexes fell on Tuesday as

concerns mounted that the U.S.-Iran impasse could keep oil

prices elevated for longer.

A U.S. official said President Donald Trump was unhappy with

the latest Iranian proposal ​on resolving the conflict in the

Middle East, pouring cold water on hopes for a deal that had

sent the S&P 500, the Nasdaq 100, and the Nasdaq

Composite to record highs in recent days.

At 7:00 a.m. ET, Dow E-minis rose 203 points,

or 0.41%, S&P 500 E-minis were down 15 points, or 0.21%,

and Nasdaq 100 E-minis fell 178.75 points, or 0.65%.

The pullback underscores how strongly the war is shaping

market sentiment even during the busiest week of the U.S.

corporate earnings season this quarter.

"The U.S. and Israel are not able to force a settlement of

the war with Iran that achieves most of their maximalist

objectives," wrote Hasnain Malik, head of geopolitical risk at

Tellimer Research.

"Resolution of the war, via military or diplomatic means,

still looks a long way off, even though the ceasefire is

holding."

Oil prices are 43% higher than pre-war levels as the crucial

shipping route through the Strait of Hormuz remains disrupted.

"The divergence between equity market optimism and the more

cautious signals from bond and oil markets reinforces the view

that geopolitical developments remain an active and important

variable in risk management," said Ameriprise Financial's chief

market strategist, Anthony Saglimbene.

Separately, the Wall Street Journal reported that OpenAI had

missed internal targets for weekly users and revenue.

Shares of Oracle, whose reliance on OpenAI for its

cloud computing ambitions has been under scrutiny, fell 6.3% in

the premarket session.

Chip stocks also dropped, with Nvidia ( NVDA ), AMD

and Arm Holdings down 1.5%, 4.1% and 6.9%, respectively.

Meanwhile, investors are scrutinizing earnings from a bunch

of corporate giants on Tuesday.

United Parcel Service ( UPS ) dipped 2.1% after the

logistics firm reported a sharp drop in quarterly adjusted

profit.

General Motors ( GM ) rose 5% after the automaker lifted its

full-year earnings forecast on a resilient U.S. car market and

an expected tariff refund.

Coca-Cola shares gained 2% after the beverage giant

lifted its annual adjusted profit forecast.

Music-streaming platform Spotify ( SPOT ) fell 10% after

forecasting second-quarter profit below estimates.

(Reporting by Niket Nishant in Bengaluru; Editing by Devika

Syamnath)