The core of value investing is targeting companies that are perceived to be trading at bargain prices relative to their underlying business performance.
It's up to investors to watch individual stocks and decide when it has fallen too far.
Investors can also mitigate some risk by targeting established and blue-chip companies rather than speculative small-caps.
Right now, there are three ASX 300 shares that may have slipped into the undervalued range after a poor 2026.
Here's what experts are saying.

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Flight Centre Travel Group (ASX: FLT)
Like many ASX travel shares, Flight Centre has suffered from rising interest rates, geopolitical conflict and inflation.
These headwinds have all weighed heavily on the sector, and investor sentiment.
As a result, Flight Centre shares are down 36% year to date.
It's important to point out these headwinds could persist in the short term.
However looking long-term, after another 3% drop yesterday, these ASX 300 shares could now be oversold.
The team at Morgan Stanley believe this ASX 300 stock looks cheap.
It recently reaffirmed its buy rating on Flight Centre shares with a $16 target.
This suggests a rebound of over 60% from current levels.
Brambles Ltd (ASX: BXB)
Brambled is the world's largest supplier of reusable wooden pallets and crates used for storing and transporting goods.
This ASX 300 stock tumbled 6% yesterday to take its year to date losses to 28%.
Almost all of this has come since 18 May when the company downgraded its sales revenue growth forecast to 2% to 3%, down from 3% to 4%, and downgraded its underlying profit growth forecast to 3% to 5%, down from 8% to 11%.
However, it could now be firmly in the value range.
Citi renewed its buy rating on Brambles shares with a $27.55 price target on Monday.
This indicates a recovery of 68% over the next 12 months.
ARB Corporation Ltd (ASX:ARB)
ARB is Australia's largest designer, manufacturer, and distributor of four-wheel-drive and light commercial vehicle accessories.
Its share price dropped a further 3% yesterday.
In 2026, this ASX 300 stock is now down roughly 47%.
Similar to travel shares, consumer discretionary companies like ARB have fallen victim to cost of living pressures.
Luxury/non-essential items like car and truck accessories have likely been pushed to the backburner for many everyday Aussies this year, which has negatively impacted ARB.
However, looking long-term, brokers are confident this ASX 300 stock can rebound.
Ord Minnett recently maintained a buy rating with a $31.00 target price.
This indicates an upside potential of 82% in the next 12 months.