14 venues list an APT perpetual: 10 charge funding every hour, 3 continuously.
Aevo
ApeX
Aster
Extended
GMX
gTrade
Helix
Hyperliquid
Lighter
Merkle
Variational Up to 10x, 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.