Buy, hold, sell: Megaport, Orora, 4DMedical shares

S&P/ASX 200 Index (ASX: XJO) shares are up 1% to 8,862.8 points after the US and Iran ceased military strikes over the weekend.

The fastest rising ASX 200 shares today are Capricorn Metals Ltd (ASX: CMM), up 14%, and Firefly Metals Ltd (ASX: FFM), up 9%.

Among the biggest fallers today are Karoon Energy Ltd (ASX: KAR), down 9%, and Yancoal Australia Ltd (ASX: YAL), down 6%.

Meanwhile, let's check out three ASX 200 shares with new ratings from the experts (courtesy The Bull). 

4DMedical Ltd (ASX: 4DX)

This healthcare share was the best performer of the entire ASX 200 in FY26, skyrocketing 1,786% to $4.53.

Today, the 4DMedical share price is $3.19, up 2.6%.

Philippe Bui from Medallion Financial Group has a buy rating on 4DMedical shares.

Bui said: 

4DMedical is an Australian respiratory imaging company. Its CT:VQ platform uses existing CT scans to improve evaluating lung function amid diagnosing conditions.

Since CT:VQ obtained US Food and Drug Administration (FDA) clearance in 2025, the company has secured deployments with six leading US academic medical centres.

A bipartisan bill in the US directing the Department of Veterans Affairs to establish a pilot program using 4D functional lung imaging software to identify respiratory disorders and lung disease is an encouraging development.

The company is well capitalised and we remain content holders at current levels given several potentially positive catalysts.

Megaport Ltd (ASX: MP1) 

ASX 200 tech shares tanked in FY26, but there were 3 winners, and Megaport was one of them, rising 49%.

Megaport provides cloud and data centre connectivity services through a global network-as-a-service (NaaS) platform.

Today, the Megaport share price is $18.75, up 1.5%.

Bui has a hold rating on this ASX 200 tech share, and commented:  

The business is riding two powerful trends — the global data centre build and the shift to multi cloud.

Global data centre capital expenditure is projected to reach $US1.7 trillion by 2030. Wholly owned subsidiary Latitude.sh recently signed three contracts, adding $A254 million in annual recurring revenue.

Results in the first half of 2026 confirmed growth is high quality, with EBITDA up 28 per cent to $A35.3 million. The shares have soared since April, so much of the good news is now priced into the stock, in our view.

Orora Ltd (ASX: ORA)

The Orora share price is $1.47, up 1% today and down 31% over 12 months.

Orora makes aluminium cans and glass bottles, mainly for beer, wine, and spirits.

Michael Gable from Fairmont Equities has a sell recommendation on this ASX 200 materials share. 

Gable said: 

In April, this packaging company downgraded fiscal year 2026 earnings guidance for its Saverglass business.

The conflict in the Middle East and weaker customer confidence is also impacting performance.

The shares are entrenched in a downtrend and this further heightens the risk of lower share price levels, in my view.

The shares were priced at $2.34 on February 25, three days prior to the start of the war in Iran.

Other stocks appeal more in challenging times across the globe.

The post Buy, hold, sell: Megaport, Orora, 4DMedical shares appeared first on The Motley Fool Australia.

Motley Fool contributor Bronwyn Allen has no position in any of the stocks mentioned. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has positions in and has recommended Megaport. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

The Motley Fool's purpose is to help the world invest, better. Click here now for your free subscription to Take Stock, The Motley Fool's free investing newsletter. Packed with stock ideas and investing advice, it is essential reading for anyone looking to build and grow their wealth in the years ahead. This article contains general investment advice only (under AFSL 400691). Authorised by Bruce Jackson. 2026