As of June 19, 2026, there is no major cryptocurrency widely recognized by the ticker symbol $RE currently listed as a top gainer.
It is possible that you may be referring to one of the following:
REI Network ($REI): Data from today shows REI Network ($REI) is actually listed among tokens with a negative price change (down approximately 5.15%).
Re Protocol (REUSD): There is a project called Re Protocol that uses the ticker REUSD, which focuses on tokenizing reinsurance risk. It is not currently appearing on the major "Top Gainers" lists for today.
Ticker Confusion: In the volatile crypto market, many new or small-cap tokens are created with similar or short tickers. It is common for "top gainer" lists to be dominated by highly speculative, low-market-cap assets that change rapidly.