Data Source of Data API v2

Alpaca Market Data
1

What data source does Alpaca get the SIP data from for data API v2? It is not clear from the following link. I know Alpaca’s data API v1 used Polygon as the data source. Any insight is helpful. Thanks!

2

Hi @aladdin

For the SIP Data, we receive direct feeds from the CTA (administered by NYSE) and UTP (administered by Nasdaq) SIPs. These 2 feeds combined offer 100% market volume.
feel free to check out our Docs if you think that might help.