Most brokers allow trading outside RTH by routing orders to special marketplaces (e.g. Tradegate for some EU stocks). I don't know which brokers...
I'm old enough to remember a dozen or so of so-called ETH killers. NEO, EOS, XRP... They didn't age well.
Hard to say. Past bubbles typically unfold over extended periods. The Tulip Mania spanned nearly a decade, while the acceleration phase of the...
Separate names with a comma.