Aya and Hot Chili both began trading on April 7 under the tickers AYASF and HHLKF, respectively.
"This designation is OTC Market's top tier and a step towards greater liquidity and support to our active North American investor outreach," Hot Chili's managing director, Christian Easterday, said.
Hot Chili said its upgrade from the OTCQB Venture Market - where it has been trading since May 6 last year - to OTCQX will enhance its visibility and broaden its access to "the extensive market" of US retail, high-net-worth individuals and institutional investors.
Aya's common shares were previously quoted on the OTC's "Pink" market. Aya also noted the expanded transparency and accessibility to US and global shareholders that the move will bring.
Some other advantages of being on the platform include access to the US trading hours and trades made in US dollars, Hot Chili said.
The benefit in the US dollar is that it reduces exchange risk and additional FX fees, the company added.
Both companies' share prices rose day-on-day on April 8.
AYASF traded at US$7.185, which was up 6% day-on-day and gave the company a market capitalisation of $708.94 million.
And HHLKF traded at $1.09, which was up 3% day-on-day and gave the company a market capitalisation of $120.09 million.
