Why is the CBA share price being hit so hard today?

Has CBA's luck finally run out?

It's been a rough day for the Australian share market and many ASX shares so far this Tuesday. At the time of writing, the S&P/ASX 200 Index (ASX: XJO) has retreated 0.36% and is back down to around 8,387 points, despite an early surge into positive territory at market open. But let's talk about what's happening with the Commonwealth Bank of Australia (ASX: CBA) share price.

CBA shares are having an awful day, no way around it. The ASX's largest bank stock closed at $160.14 a share yesterday after touching yet another new record high of $160.27 during intra-day trading. This morning, CBA shares opened right on $160, but quickly started falling.

At the time of writing, this banking giant is now nursing a nasty 2.75% loss and is back down to $155.74 a share.

It's a particularly conspicuous loss for the CBA share price. The bank's big four peers are also having a rough day, but have dipped nowhere near the level that CBA has.

To illustrate, the Westpac Banking Corp (ASX: WBC) share price is currently down 0.99% at $33.08 a share. National Australia Bank Ltd (ASX: NAB) shares have retreated 1.19% down to $39.14, while ANZ Group Holdings Ltd (ASX: ANZ) stock has dropped 1.26% to $31.43.

As such, we can see that CBA's losses are almost double those of its big four stablemates.

So what's going on here?

A woman faces the camera with her lip raised up to the side in total confusion.

Image source: Getty Images

Why is the CBA share price having such a terrible Tuesday?

Well, it's a bit of a mystery. There's been no fresh news or announcements out of CBA that might simply explain the bank's brutal sell-off.

However, we can do a little speculating.

As many investors would be aware, CBA has been on a blistering run of late. It was only earlier this month that the CBA share price crossed $150 for the first time ever. It only took another few weeks for the bank to then hit $160.

As of yesterday's close, the bank was up an extraordinary 12.1% over the preceding month. In contrast, Westpac shares only gained 3.9% over the same period. NAB shares enjoyed a 2.4% rise, while ANZ shares gained just 1.2%.

It's entirely possible that investors have decided today that the exuberant gains for CBA over the past month might be overblown. As such, investors might be taking profits off the table en masse. With far more profits available from CBA shares, it's not inconceivable that this stock is bearing the brunt of the rush out of the banks this Tuesday.

Let's see how long this sudden turn of fortunes for the CBA share price lasts.

Motley Fool contributor Sebastian Bowen has positions in National Australia Bank. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. 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.

More on Bank Shares

Smiling woman look at her computer screen.
Bank Shares

3 reasons I would buy ANZ Bank shares at under $40

There's still work ahead, but I think the improvements underway could lead to stronger profits over time.

Read more »

Work colleagues discussing finance charts and graphs on a laptop computer and tablet in their office.
Bank Shares

CBA just delivered another $2.8 billion quarter. Would I buy the bank's shares?

The latest results showed stronger profits, but there are signs that some borrowers are feeling the pressure.

Read more »

Numerous Australian dollar notes laid out.
Bank Shares

How much must I invest in Westpac shares to earn $2,000 of dividend income?

Can Westpac be a good source of dividends?

Read more »

A man thinks very carefully about his money and investments.
Bank Shares

Everything you need to know about the latest ANZ dividend

The bank’s latest dividend has just been announced.

Read more »

Happy wife holding her hands on her husband's shoulders while both look at a laptop.
Bank Shares

Should I buy ANZ shares after it reported a $7.6 billion FY26 profit?

The latest results had some disappointments, but I think there are good reasons to take a closer look at the…

Read more »

Man working on a laptop from home.
Bank Shares

Why I'd buy Macquarie shares after today's results

The latest results contained some impressive figures and a few disappointments. Here's why I'm looking at it after the sell-off.

Read more »

A bland looking man in a brown suit opens his jacket to reveal a red and gold superhero dollar symbol on his chest.
Bank Shares

Everything you need to know about the 85-cent NAB dividend

The latest NAB dividend has just been announced…

Read more »

Sad man sitting at desk and grabbing his head as he looks at a laptop.
Bank Shares

NAB shares sink 5%: Would I buy after its results?

The bank's profit figures disappointed, but I'm taking a closer look at whether the market has overlooked some positives.

Read more »