IBKR
Interactive Brokers Group, Inc.Financial Services · $150.5B market cap
Verdict
We can't put a fair value on IBKR right now. It looks like a preferred share, note or other security rather than ordinary common stock. The figures we receive belong to the parent company, so they can't value this security.
Business quality
3 of 5 clear the 10% bar. What are the Big Five?
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6 of the investors we track hold IBKR. In Q2 2026, 1 opened a position, 1 added and 3 trimmed. Who we track
Viking Global Investors
Viking Global Investors · as of Q2 2026
$420.5M
4,830,748 shares
John Armitage
Egerton Capital · as of Q2 2026
$359.4M
4,129,416 shares
Bryan Lawrence
Oakcliff Capital · as of Q2 2026
$89.7M
1,030,740 shares
Stephen Mandel
Lone Pine Capital · as of Q2 2026
$50.3M
577,666 shares
Robert Vinall
RV Capital GmbH · as of Q2 2026
$48.8M
561,086 shares
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William Von Mueffling
Cantillon Capital Management · as of Q2 2026
$45.1M
517,833 shares
Moves in Q2 2026
New position: Stephen Mandel
Added: Viking Global Investors
Trimmed: William Von Mueffling, Robert Vinall, John Armitage
Insider activity
Since Sep 1, 2026: 1 open-market purchase worth $2K. Why purchases matter
Purchases
About Interactive Brokers Group, Inc.
Interactive Brokers Group, Inc. operates as a sophisticated electronic brokerage, serving clients across the United States and globally. This firm manages the trading, clearing, and settlement for a broad spectrum of financial instruments, including equities, options, futures, foreign exchange, bonds, mutual funds, exchange-traded funds (ETFs), precious metals, and digital currencies. Beyond its core brokerage…
Investment - Banking & Investment Services
Fair value and Payback Price are estimates from the company's reported financials, not investment advice. Prices as of the close of Oct 3, 2026. How the Payback Price works