13 venues list an INJ perpetual: 8 charge funding every hour, 4 continuously.
Aevo
ApeX
Aster
Avantis
Extended
GMX
gTrade
Helix
Hyperliquid
Merkle
Variational Up to 5x, 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.