AVXUSD is the market symbol for Avalanche (AVAX) priced in US dollars, showing how many dollars one AVAX token is worth. Avalanche is a proof-of-stake smart contract platform built for fast transaction finality and low fees, and AVAX is its native token, used to pay network fees, secure the network through staking, and settle activity across its sub-networks. On this broker's platform the pair is listed as AVXUSD, with AVX standing in for AVAX.
You trade AVXUSD as a crypto CFD, a position on the price movement without owning any AVAX or running a wallet. Go long if you expect the token to rise, or short if you expect it to fall. The pair is quoted in US dollars, trades around the clock, and is highly volatile, so price can move sharply in either direction within a single session.
Avalanche's price tends to respond to adoption of its network, the launch of new projects and sub-networks built on it, broad crypto regulation, and overall market sentiment. Like most altcoins it also tends to track Bitcoin's larger moves. Do not confuse the AVX ticker with any unrelated stock symbol; here it refers only to Avalanche.
Say AVXUSD is trading at $30.00 and you go long, expecting the token to climb. You open a position of 100 AVAX. The price rises to $34.00, a gain of $4.00 per token, so your profit is:
100 √ó $4.00 = $400
Had the price dropped to $26.00 instead, the same $4.00 move against you would have cost $400.