Coinbase provides three interesting trading signals for its users. These are typical hold time, popularity on Coinbase and trading activity.
Note: Typical hold time is the median time that Coinbase customers hold the coin before selling it or sending it to another account or address.
ZRX remains to be the leader with 141 (-4 comparing to the last month) days of holding period. LTC, ETH, ETC still have the holding period > 100 days. This month a recently listed token Orchid has made it to the top 15 list, just one month after being listed on Coinbase.