S&P/ASX 200 Index (ASX: XJO) shares are down 0.8% to 8,661.98 points on Tuesday.
Meanwhile on The Bull this week, two experts give us their views on three ASX 200 shares.
Let's take a look.
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Origin Energy Ltd (ASX: ORG)
The Origin Energy share price is $10.67, down 1.3% today and down 6% in the calendar year to date (YTD).
Dylan Evans from Catapult Wealth has a buy rating on the ASX 200 utilities share this week.
He explains:
Origin is a key player in Australia's energy supply chain.
Broader energy supply disruptions caused by the conflict in Iran are likely to be a net positive for Origin.
The company's gas will become more appealing to Asian consumers when compared to Middle Eastern competitors.
Electricity sales volumes in the March quarter were up 4 per cent on the prior quarter.
Longer term, Origin is positioned to benefit from electrification and its energy security.
Megaport Ltd (ASX: MP1)
The Megaport share price is frozen at $16.61 today after the company entered a trading halt.
Megaport requested the trading halt ahead of an announcement regarding "new material commercial transactions".
The trading halt will remain in place until either an announcement is made or until the commencement of trading on Thursday.
Meantime, ASX 200 tech shares are having another strong day, up 2.4%. Tech is the best performer of the 11 market sectors today.
Philippe Bui from Medallion Financial Group has a hold rating on Megaport shares.
He explains:
MP1 is a leading global network-as-a-service provider, connecting enterprises to cloud providers and data centres.
Artificial intelligence-driven data centre investment is a direct tailwind, and this business is capturing it.
Revenue quality is improving, margins are expanding and existing customers are spending more.
Wholly owned subsidiary Latitude.sh secured three major contracts in May, representing a meaningful step forward in recurring revenue.
At current prices, in line with historic valuation averages, emerging upside doesn't appear fully priced in.
National Australia Bank Ltd (ASX: NAB)
The NAB share price is $37, down 1% today, and down 12.7% YTD.
Evans has a sell rating on the ASX 200 bank share this week.
He explains:
The bank's first half result in fiscal year 2026 was underwhelming, in our view.
Investment loans account for about a third of residential lending.
Proposed changes to negative gearing and capital gains tax are likely to reduce loan and property price growth, in our view.
Given higher interest rates and affordability pressures, NAB may struggle to deliver the growth needed to support current expectations.
The government proposes to scrap negative gearing for established residential property investments purchased after budget night, which was 12 May, from 1 July 2027.
Grandfathering arrangements will protect existing negatively geared investments.
In relation to capital gains tax (CGT), the government proposes to replace the 50% CGT discount for assets held for more than a year with cost-based indexation, and to introduce a 30% minimum tax on net capital gains from 1 July 2027.
Existing investments in ASX shares and property will be grandfathered, so the 50% discount will continue to apply to gains accrued before 1 July 2027 on those assets.
After 1 July 2027, cost base indexation and the new minimum 30% CGT tax rate will apply for future gains on those existing investments.
Landlords who buy new housing after budget night will be able to choose between the two CGT methods when they sell down the track.
