Interactive Brokers market cap IBKR

Share price times shares outstanding: what the whole company sells for, since 2010.

Interactive Brokers is worth $36.4B at the close on Oct 23, 2026, at $80.28 a share.

That is up 19% over the last year and up 423% over five years.

Its highest close in our data was $43.4B in Aug 2026.

Market cap over time

Year	End of year	Low	High	Change
2026 so far	$36.4B	$28.6B	$43.4B	+23%
2025	$29.5B	$15.9B	$31.4B	+51%
2024	$19.5B	$9.4B	$20.9B	+120%
2023	$8.9B	$7.6B	$10.1B	+19%
2022	$7.4B	$5.4B	$8.2B	−5%
2021	$7.8B	$5.5B	$7.9B	+41%
2020	$5.5B	$2.9B	$5.5B	+53%
2019	$3.6B	$3.5B	$4.3B	−10%
2018	$4B	$3.6B	$5.7B	−5%
2017	$4.2B	$2.3B	$4.4B	+70%
2016	$2.5B	$2B	$2.7B	−11%
2015	$2.8B	$1.6B	$2.8B	+62%
2014	$1.7B	$1.1B	$1.7B	+40%
2013	$1.2B	$664.8M	$1.2B	+90%
2012	$644M	$610.8M	$776.6M	−6%
2011	$681.7M	$608.1M	$761.7M	−9%
2010	$753.2M	$702.6M	$812.4M	n/a

Companies in Financial Services nearest Interactive Brokers' size, closest first, today.