13 venues list a GRAM perpetual: 8 charge funding every hour, 1 every 4 hours, 1 every 8 hours, 3 continuously.
ApeX
Aster
edgeX
Extended
GRVT
gTrade
Helix
Hyperliquid
Lighter
Paradex
Reya 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.