Why is everyone talking about DroneShield, Treasury Wine and Westpac shares on Monday?

DroneShield Ltd (ASX: DRO), Treasury Wine Estates Ltd (ASX: TWE) and Westpac Banking Corp (ASX: WBC) shares are turning heads on Monday.

One of the S&P/ASX 200 Index (ASX: XJO) heavyweights is leaping higher today while the other two are taking a fall.

Here's what's grabbing investor interest.

Westpac shares dive on challenging outlook

Westpac shares are down a sharp 5.0% in late morning trade today, swapping hands for $36.00 apiece.

This follows the release of the ASX 200 bank stock's third quarter results.

Now the quarterly results were quite solid, with the big four bank's operating income increasing by 1% to $5.7 billion. And net interest margin (NIM) held steady at 1.89%.

This helped Westpac deliver a 3% quarter on quarter increase in statutory net profit to $1.8 billion.

But investors look to be pressuring Westpac shares with an eye on the upcoming months.

The bank flagged moderated lending growth and variable consumer spending, with mortgage growth likely to be particularly challenging.

As for bad loans, management noted, "Credit impairment provisions were $5.3 billion as at 30 June 2026, with provisions above expected losses of the base case economic scenario increasing to $2.0 billion."

DroneShield shares slide despite new product launch

Joining Westpac shares in the red today, the DroneShield share price is down 1.4% at time of writing at $2.15.

The fall comes despite the ASX 200 drone defence stock announcing the launch of its RfRecon product. This may be driven by some profit taking, with DroneShield shares still up 28.2% in August.

As for the new product, according to the release, the portable radio frequency (RF) sensing and intelligence device allows operators to quickly identify, locate and assess RF activity in active operational environments.

Commenting on the launch of RfRecon, DroneShield CEO Angus Bean said:

The electromagnetic spectrum has become one of the most important sources of operational intelligence on the modern battlefield, but collecting data is no longer enough. The teams that gain the greatest advantage will be those that can rapidly understand what they are seeing and confidently act on it.

Which brings us to…

Treasury Wine shares jump on earnings update

Unlike DroneShield and Westpac shares, Treasury Wine shares are jumping higher today.

At time of writing, shares in the ASX 200 global wine company are up 3.3%, trading for $5.61 each. This outperformance follows an update on the company's key initiatives to rebalance its US supply chain.

Management said the impairment costs related to its US assets and brands will result in additional post-tax charges of $558.4 million for FY 2026.

However, investors look to be supporting Treasury Wine shares today, with the company saying it expects its FY 2026 earnings (EBITS) to come in at $492.3 million. That beats full year earnings guidance of $480 million to $490 million.

The post Why is everyone talking about DroneShield, Treasury Wine and Westpac shares on Monday? appeared first on The Motley Fool Australia.

Motley Fool contributor Bernd Struben 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 DroneShield and Treasury Wine Estates. The Motley Fool Australia has positions in and has recommended Treasury Wine Estates. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

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