What does Interactive Brokers charge for stock trades?

$0 (Lite) / per-share (Pro) on stocks, with a per-share pricing applies penny-stock surcharge.

Does Interactive Brokers have 24-hour trading?

Yes — approximately 10,000 eligible securities (Broadest in industry — effectively all US equities).

Yes — full access to all five OTC tiers (OTCQX, OTCQB, Pink Current, Pink Limited, Grey).

per-contract pricing per contract.

$0 (Lite) / per-share (Pro) stock commission · fractional shares · 24/5 overnight trading · options

Commission: $0 (Lite) / per-share (Pro)
Fractional shares: Yes
Extended hours: Yes
Overnight (24/5): Yes
~10,000 eligible · Broadest in industry — effectively all US equities
Options: per-contract pricing
OTC access: 5/5 full, 0/5 limited
Penny-stock surcharge: Per-share pricing applies
Short locate: best

OTC Markets organises non-exchange-listed securities into five tiers by disclosure quality. Interactive Brokers’s coverage:

Broadest OTC access including pink/grey/foreign. Best short inventory for small caps.

What does Interactive Brokers charge for stock trades?: $0 (Lite) / per-share (Pro) on stocks, with a per-share pricing applies penny-stock surcharge.
Does Interactive Brokers offer fractional shares?: Yes.
Does Interactive Brokers have 24-hour trading?: Yes — approximately 10,000 eligible securities (Broadest in industry — effectively all US equities).
Can I trade penny stocks and OTC names on Interactive Brokers?: Yes — full access to all five OTC tiers (OTCQX, OTCQB, Pink Current, Pink Limited, Grey).
What does Interactive Brokers charge for options?: per-contract pricing per contract.