The All Ordinaries Index (ASX: XAO) share price struggled to gain traction on Monday, slumping 1.36% to close Monday's session at 6,854.30 points. But not all All Ords shares suffered alongside the benchmark index.
Some posted gains of as much as 11%.
So, which ASX All Ords shares outperformed and what drove them to defy the market's downturn? Keep reading to find out.

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These ASX All Ords shares defied today's downturn
The first ASX All Ords share posting a notable gain on Monday was Electro Optic Systems Holdings Ltd (ASX: EOS). The company's stock soared 5.94% today to close at 53.5 cents.
Interestingly, there was no price-sensitive news from Electro Optic Systems on Monday. However, the market was informed of an S&P/ASX 200 Index (ASX: XJO) giant's move to up its stake in the tech company.
Washington H Soul Pattinson and Co Ltd (ASX: SOL) has increased its holding in the company to 9.95%, according to an ASX release. The ASX 200 giant previously boasted 6.21% of the company's voting power.
Fellow All Ords share Elmo Software Ltd (ASX: ELO) also posted a 1.67% gain on Monday. The cloud-based human resources and payroll software provider's stock closed the day at $3.05.
Once again, there was no news from the company on Monday. However, only last week, Elmo revealed it had been approached by a party interested in striking an acquisition deal.
Finally, shares in ASX All Ords memory technology developer Weebit Nano Ltd (ASX: WBT) soared 11.32% to close Monday at $2.36.
As seems to be the pattern, there's been no word to explain its upwards trajectory. Today's gain sees it trading at its highest point since mid-September.