post https://trading-api.kalshi.com/trade-api/v2/portfolio/orders/batched
Endpoint for submitting a batch of orders.
Each order in the batch is counted against the total rate limit for order operations.
Consequently, the size of the batch is capped by the current per-second rate-limit
configuration applicable to the user.
At the moment of writing, the limit is 20 orders per batch.
Available to members with advanced access only.