Specialized Market Data Lines | Interactive Brokers

Given the potentially high amount of data being sent, market depth and tick data requests are more limited. Just as with historical data requests, the amount of active depth or tick requests are related to the amount of market data lines:

Number of market data lines	Tick By Tick Data	Max Market Depth (Level II)	Number of subscribed Quote Booster packs
100	5	3	0
101 – 200	10	3	1
201 – 300	15	3	2
301 – 400	20	3	3
401 – 500	25	4	4
501 – 600	30	5	5
601 – 700	35	6	6
701 – 800	40	7	7
801 – 900	45	8	8
901 – 1000	50	9	9
1001 – 1100	55	10	10
1100+	60-500	11 – 60	special offer

Note:

Tick By Tick market data lines scale at 5% of total market data lines. The values shown in the table above are for approximations.
End users from IB IBroker clients which use CP API + DAM SSO still have this limitation: each IBroker end-user can get up to max >= 100 data lines. However, the limit is on a per session basis per IP Address. For details, please contact IB DAM team.