11 venues list an SMSN perpetual: 9 charge funding every hour, 1 every 8 hours, 1 continuously.
Aevo
ApeX
Extended
GRVT
gTrade
Hyperliquid
Lighter
Ondo
Pacifica Up to 20x, settled in USDC.
No. A perpetual position tracks price and does not confer ownership of the underlying.
Yes — a short perpetual position uses the same margin mechanics as a long.