Cross‑Margin vs Isolated Margin on Perpetual Futures — what really moves the needle on fees and risk

Whoa! Right off the bat: margin modes change everything. My gut said cross‑margin was just more dangerous. Seriously? At first glance that felt true. But then I dug into how perpetuals are priced, how funding rates flow, and how fee tiers actually stack up — and my view shifted. Initially I thought cross‑margin simply pooled […]