Research memoInteractive Brokers Group, Inc. (IBKR) · NASDAQMemo of October 16, 2026

Interactive Brokers Group stock forecast

The probability-weighted price is $81.53 in October 2027, compared with $86.03 on October 16, 2026. Interactive Brokers Group's forecast hinges on turning account growth into balances and activity fast enough to outrun rate pressure, dilution and outside ownership.

86.03
Share price today, USD
86.42 (+3 %)
Weighted scenario, October 2029
40.1%
Real free cash flow yield
26.3x
P/E, next 12 months
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Every number traced to Interactive Brokers Group's filings8 chapters · 16,029 words221 sources cited

Where could Interactive Brokers Group's shares be by October 2029?

The probability-weighted price is $81.53 in October 2027, a 5% loss including dividends. It is $84.07 in October 2028, a 1% loss. It reaches $86.42 in October 2029, a 3% gain. By the last date, the range is $45.74 to $145.74. Today’s reference price is $86.03.

Share price in October 2029: our three scenarios (USD)Today 86.0345.74Bear · 25 % · -45%83.34Base · 55 % · -0%145.74Bull · 20 % · +73%
What the shares could be worthUSD per share at each date; in brackets the return since today's 86.03, dividends included
CaseProbabilityOctober 2027October 2028October 2029
Bear25 %61.18 (-28 %)52.04 (-38 %)45.74 (-45 %)
Base55 %83.36 (-2 %)84.08 (-1 %)83.34 (-0 %)
Bull20 %101.92 (+19 %)124.05 (+46 %)145.74 (+73 %)
Weighted100 %81.53 (-5 %)84.07 (-1 %)86.42 (+3 %)

What has to go right or wrong for Interactive Brokers Group?

The base case assumes steady growth, moderate dilution, gradual dividend increases and some valuation compression.

Bear revenue is $7,600 million in the first year and $7,900 million in the second. Margin falls from 17.0% to 16.5%, so earnings reach $1,304 million before settling at $1,312 million on final revenue of $8,200 million and a 16.0% margin. The bull case begins with $8,200 million of revenue and reaches $9,840 million in the second year. Final revenue is $11,800 million, with margin rising from 19.0% to 20.0%; earnings reach $1,919 million and then $2,360 million. The spread reflects rate exposure: a 25-basis-point move changes annual NII by $83 million. Softer activity also matters, as annualized cleared DARTs per account fell from 213 to 203.

The forecast's tablebase case, then bear / bull in brackets; USD millions, per share in USD, unless shown
October 2027October 2028October 2029
Earnings1,480 (1,292 / 1,558)1,647 (1,304 / 1,919)1,813 (1,312 / 2,360)
Shares (millions)462 (465 / 459)470 (476 / 464)479 (488 / 470)
Dividends per share0.60 (0.60 / 0.60)0.80 (0.60 / 1.00)1.00 (0.60 / 1.40)
Price to earnings26.00 (22.00 / 30.00)24.00 (19.00 / 30.00)22.00 (17.00 / 29.00)

What this means. The price to earnings number shows how many dollars investors pay for each dollar of the company's earnings.

How much cash does Interactive Brokers Group really make?

Operating cash flow reached $15,811 million in 2025, including a $38,993 million increase in amounts payable to customers. After $67 million of capital spending, reported free cash flow was $15,744 million. Its 253.7% margin is therefore an accounting signal to investigate, not money that can simply be paid out.

IBKR’s “real free cash flow” subtracts $118 million of stock compensation and comes to $15,626 million. That subtraction recognizes dilution’s economic cost, but it does not remove customer obligations, restricted cash, regulatory capital needs or earnings belonging to other owners.

Follow the money: real free cash flowUS$ millions
20252024202320222021
Cash from operations15,8118,7244,5443,9685,896
− Capital spending6749496977
= Free cash flow15,7448,6754,4953,8995,819
− Stock pay1181121009280
= Real free cash flow15,6268,5634,3953,8075,739
From the full memo · 1. The business

Interactive Brokers Group (IBKR) is an electronic brokerage: it gives investors and financial firms a way to trade investments around the world and keep them in one account. Its business becomes clear when you follow a dollar through that account—first as a customer’s money, then as a fee, interest payment or financing balance, and finally as revenue left after costs.

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Where these numbers come from

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