Interactive Brokers · Earnings release · 8-K Exhibit 99

INTERACTIVE BROKERS GROUP ANNOUNCES 2Q2025 RESULTS

— — —

GAAP DILUTED EPS OF $0.51, ADJUSTED1 EPS OF $0.51

GAAP NET REVENUES OF $1,480 MILLION, ADJUSTED NET REVENUES OF $1,480 MILLION

GREENWICH, CT, July 17, 2025 — Interactive Brokers Group, Inc. (Nasdaq: IBKR), an automated global electronic broker, announced results for the quarter ended June 30, 2025.

Reported and adjusted diluted earnings per share were both $0.51 for the current quarter. For the year-ago quarter, reported diluted earnings per share2 were $0.41 and $0.44 as adjusted.

Reported and adjusted net revenues were both $1,480 million for the current quarter. For the year-ago quarter, reported net revenues were $1,230 million and $1,290 million as adjusted.

Reported and adjusted income before income taxes were both $1,104 million for the current quarter. For the year-ago quarter, reported income before income taxes was $880 million and $940 million as adjusted.

Financial Highlights

(All comparisons are to the year-ago quarter.)

•

T1Commission revenue increased 27% to 516 million on higher customer trading volumes. Customer trading volume in stocks, options and futures increased 31%, 24% and 18%, respectively.

•

T2Net interest income increased 9% to $860 million on higher average customer credit balances and securities lending activity. T3Net interest income includes an approximately $26 million one-time credit related to recovery of taxes withheld at source.

•

Other fees and services decreased 9% to $62 million, led by a decrease of $7 million in risk exposure fees, which was partially offset by a $2 million increase in FDIC sweep fees.

•

Execution, clearing and distribution fees increased 1% to $116 million, driven by a new FINRA Consolidated Audit Trail (“CAT”) fee initiated during the fourth quarter of 2024 and higher customer trading volumes in stocks, options and futures, mostly offset by greater capture of liquidity rebates from certain exchanges.

•

T4General and administrative expenses increased 17% to $61 million, driven primarily by an increase of $8 million in advertising expenses.

•

T5Pretax profit margin for the current quarter was 75% both as reported and as adjusted. For the year-ago quarter, pretax margin was 72% as reported and 73% as adjusted.

•

Total equity of $18.5 billion.

T6The Interactive Brokers Group, Inc. Board of Directors declared a quarterly cash dividend of $0.08 per share. This dividend is payable on September 12, 2025, to shareholders of record as of September 1, 2025.

1 See the reconciliation of non-GAAP financial measures starting on page 10.

2 Prior period share and per share amounts have been retroactively adjusted to reflect the four-for-one forward stock split, effected in the form of a stock dividend, on June 17, 2025.

1

Business Highlights

(All comparisons are to the year-ago quarter.)

•

T7Customer accounts increased 32% to 3.87 million.

•

T8Customer equity increased 34% to $664.6 billion.

•

Total DARTs3 increased 49% to 3.55 million.

•

Customer credits increased 34% to $143.7 billion.

•

Customer margin loans increased 18% to $65.1 billion.

Other Items

T9Other income increased $78 million to a gain of $42 million. This gain mainly comprised (1) the non-recurrence of a loss of approximately $48 million on positions taken over as a customer accommodation due to a technical issue at the New York Stock Exchange that occurred on the morning of June 3, 2024; (2) $17 million related to our principal trading and investing activities; and (3) $15 million related to our currency diversification strategy.

T10In connection with our currency diversification strategy, we base our net worth in GLOBALs, a basket of 10 major currencies in which we hold our equity. In this quarter, our currency diversification strategy increased our comprehensive earnings by $301 million, as the U.S. dollar value of the GLOBAL increased by approximately 1.62%. The effects of the currency diversification strategy are reported as components of (1) Other Income (loss of $5 million) and (2) Other Comprehensive Income (gain of $306 million).

Conference Call Information:

Interactive Brokers Group, Inc. will hold a conference call with investors today, July 17, 2025, at 4:30 p.m. ET to discuss its quarterly results. Members of the public who would like to listen to the conference call should register at https://register-conf.media-server.com/register/BI1980d5d059964abab3dd6c86da65d04e to obtain the dial-in details. The number should be dialed approximately ten minutes prior to the start of the conference call. The conference call will also be accessible simultaneously, and through replays, as an audio webcast through the Investor Relations section of the Interactive Brokers web site, www.interactivebrokers.com/ir.

About Interactive Brokers Group, Inc.:

Interactive Brokers Group affiliates provide automated trade execution and custody of securities, commodities, foreign exchange, and forecast contracts around the clock on over 160 markets in numerous countries and currencies from a single unified platform to clients worldwide. We serve individual investors, hedge funds, proprietary trading groups, financial advisors and introducing brokers. Our four decades of focus on technology and automation have enabled us to equip our clients with a uniquely sophisticated platform to manage their investment portfolios. We strive to provide our clients with advantageous execution prices and trading, risk and portfolio management tools, research facilities and investment products, all at low or no cost, positioning them to achieve superior returns on investments.

Interactive Brokers has consistently earned recognition as a top broker, garnering multiple awards and accolades from respected industry sources such as Barron's, Investopedia, Stockbrokers.com, and many others.

3 Daily average revenue trades (DARTs) are based on customer orders.

2

Cautionary Note Regarding Forward-Looking Statements:

The foregoing information contains certain forward-looking statements that reflect the Company’s current views with respect to certain current and future events and financial performance. These forward-looking statements are and will be, as the case may be, subject to many risks, uncertainties and factors relating to the Company’s operations and business environment which may cause the Company’s actual results to be materially different from any future results, expressed or implied, in these forward-looking statements. Any forward-looking statements in this release are based upon information available to the Company on the date of this release. The Company does not undertake to publicly update or revise its forward-looking statements even if experience or future changes make it clear that any statements expressed or implied therein will not be realized. Additional information on risk factors that could potentially affect the Company’s financial results may be found in the Company’s filings with the Securities and Exchange Commission.

For Interactive Brokers Group, Inc. Investors: Nancy Stuebe, investor-relations@ibkr.com or Media: Rob Garfield, media@ibkr.com.

3

INTERACTIVE BROKERS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(UNAUDITED)

Three Months

Six Months

Ended June 30,

Ended June 30,

(in millions, except share and per share data)

Revenues:

Commissions

$

$

$

$

Other fees and services

Other income (loss)

Total non-interest income

Interest income

Interest expense

Total net interest income

Total net revenues

Non-interest expenses:

Execution, clearing and distribution fees

Employee compensation and benefits

Occupancy, depreciation and amortization

Communications

General and administrative

Customer bad debt

1

2

2

7

Total non-interest expenses

Income before income taxes

Income tax expense

Net income

Net income attributable to noncontrolling interests

Net income available for common stockholders

$

$

$

$

Earnings per share1:

Basic

$

$

$

$

Diluted

$

$

$

$

Weighted average common shares outstanding1:

Basic

Diluted

1 Prior period share and per share amounts have been retroactively adjusted to reflect the four-for-one forward stock split, effected in the form of a stock dividend, on June 17, 2025.

4

INTERACTIVE BROKERS GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(UNAUDITED)

Three Months

Six Months

Ended June 30,

Ended June 30,

(in millions, except share and per share data)

Comprehensive income:

Net income available for common stockholders

$

$

$

$

Other comprehensive income:

Cumulative translation adjustment, before income taxes

(2)

Income taxes related to items of other comprehensive income

-

-

-

-

Other comprehensive income (loss), net of tax

(2)

Comprehensive income available for common stockholders

$

$

$

$

Comprehensive earnings per share1:

Basic

$

$

$

$

Diluted

$

$

$

$

Weighted average common shares outstanding1:

Basic

Diluted

Comprehensive income attributable to noncontrolling interests:

Net income attributable to noncontrolling interests

$

$

$

$

Other comprehensive income - cumulative translation adjustment

(8)

Comprehensive income attributable to noncontrolling interests

$

$

$

$

1 Prior period share and per share amounts have been retroactively adjusted to reflect the four-for-one forward stock split, effected in the form of a stock dividend, on June 17, 2025.

5

INTERACTIVE BROKERS GROUP, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION

(UNAUDITED)

(in millions)

Assets

Cash and cash equivalents

$

$

Cash - segregated for regulatory purposes

Securities - segregated for regulatory purposes

Securities borrowed

Securities purchased under agreements to resell

Financial instruments owned, at fair value

Receivables from customers, net of allowance for credit losses

Receivables from brokers, dealers and clearing organizations

Other assets

Total assets

$

$

Liabilities and equity

Liabilities

Short-term borrowings

$

8

$

Securities loaned

Financial instruments sold but not yet purchased, at fair value

Other payables:

Customers

Brokers, dealers and clearing organizations

Other payables

Total liabilities

Equity

Stockholders' equity

Noncontrolling interests

Total equity

Total liabilities and equity

$

$

Ownership of IBG LLC Membership Interests

Interests

%

Interests

%

IBG, Inc.

Noncontrolling interests (IBG Holdings LLC)

Total IBG LLC membership interests

1 Prior period share and per share amounts have been retroactively adjusted to reflect the four-for-one forward stock split, effected in the form of a stock dividend, on June 17, 2025.

6

INTERACTIVE BROKERS GROUP, INC. AND SUBSIDIARIES

OPERATING DATA

EXECUTED ORDER VOLUMES:

(in 000's, except %)

Customer

%

Principal

%

Total

%

Period

Orders

Change

Orders

Change

Orders

Change

(9%)

(8%)

4%

(0%)

4%

CONTRACT AND SHARE VOLUMES:

(in 000's, except %)

TOTAL

Options

%

Futures1

%

Stocks

%

Period

(contracts)

Change

(contracts)

Change

(shares)

Change

1%

4%

2%

4%

3%

CUSTOMER

Options

%

Futures1

%

Stocks

%

Period

(contracts)

Change

(contracts)

Change

(shares)

Change

1%

4%

3%

4%

3%

PRINCIPAL TRANSACTIONS

Options

%

Futures1

%

Stocks

%

Period

(contracts)

Change

(contracts)

Change

(shares)

Change

(8%)

(6%)

0%

1

Includes options on futures.

7

INTERACTIVE BROKERS GROUP, INC. AND SUBSIDIARIES

OPERATING DATA, CONTINUED

CUSTOMER STATISTICS

Year over Year

% Change

Total Accounts (in thousands)

Customer Equity (in billions)1

$

$

Total Customer DARTs (in thousands)

Cleared Customers

Commission per Cleared Commissionable Order2

$

$

Cleared Avg. DARTs per Account (Annualized)

Consecutive Quarters

% Change

Total Accounts (in thousands)

7%

Customer Equity (in billions)1

$

$

Total Customer DARTs (in thousands)

1%

Cleared Customers

Commission per Cleared Commissionable Order2

$

$

(4%)

Cleared Avg. DARTs per Account (Annualized)

(6%)

1

Excludes non-customers.

2

Commissionable Order - a customer order that generates commissions.

8

INTERACTIVE BROKERS GROUP, INC. AND SUBSIDIARIES

NET INTEREST MARGIN

(UNAUDITED)

Three Months

Six Months

Ended June 30,

Ended June 30,

(in millions)

Average interest-earning assets

Segregated cash and securities

$

$

$

$

Customer margin loans

Securities borrowed

Other interest-earning assets

FDIC sweeps1

$

$

$

$

Average interest-bearing liabilities

Customer credit balances

$

$

$

$

Securities loaned

Other interest-bearing liabilities

1

1

$

$

$

$

Net interest income

Segregated cash and securities, net2

$

$

$

$

Customer margin loans3

Securities borrowed and loaned, net

Customer credit balances, net3

Other net interest income1/4

Net interest income4

$

$

$

$

Net interest margin ("NIM")

Annualized yields

Segregated cash and securities

Customer margin loans

Customer credit balances

1

Represents the average amount of customer cash swept into FDIC-insured banks as part of our Insured Bank Deposit Sweep Program. This item is not recorded in the Company's consolidated statements of financial condition. Income derived from program deposits is reported in other net interest income in the table above.

2

Net interest income on “Segregated cash and securities, net” for the three and six months ended June 30, 2025, excludes approximately $26 million of interest income, recorded in the consolidated statements of comprehensive income, related to taxes withheld at source in prior periods, which during the current quarter were determined to be fully refundable.

3

Interest income and interest expense on customer margin loans and customer credit balances, respectively, are calculated on daily cash balances within each customer’s account on a net basis, which may result in an offset of balances across multiple account segments (e.g., between securities and commodities segments).

4

Includes income from financial instruments that has the same characteristics as interest, but is reported in other fees and services and other income in the Company’s consolidated statements of comprehensive income. For the three and six months ended June 30, 2025 and 2024, $9 million, $17 million, $7 million, and $13 million were reported in other fees and services, respectively. For the three and six months ended June 30, 2025 and 2024, $18 million, $34 million, $6 million, and $15 million were reported in other income, respectively.

9

INTERACTIVE BROKERS GROUP, INC. AND SUBSIDIARIES

RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

(UNAUDITED)

Three Months

Six Months

Ended June 30,

Ended June 30,

(in millions)

Adjusted net revenues1

Net revenues - GAAP

$

$

$

$

Non-GAAP adjustments

Currency diversification strategy, net

5

Mark-to-market on investments2

(5)

Total non-GAAP adjustments

-

Adjusted net revenues

$

$

$

$

Adjusted income before income taxes1

Income before income taxes - GAAP

$

$

$

$

Non-GAAP adjustments

Currency diversification strategy, net

5

Mark-to-market on investments2

(5)

Total non-GAAP adjustments

-

Adjusted income before income taxes

$

$

$

$

Adjusted pre-tax profit margin

Three Months

Six Months

Ended June 30,

Ended June 30,

(in millions)

Adjusted net income available for common stockholders1

Net income available for common stockholders - GAAP

$

$

$

$

Non-GAAP adjustments

Currency diversification strategy, net

1

5

(4)

5

Mark-to-market on investments2

(1)

(4)

Income tax effect of above adjustments3

0

(3)

2

(4)

Total non-GAAP adjustments

(0)

(6)

Adjusted net income available for common stockholders

$

$

$

$

Note: Amounts may not add due to rounding.

Three Months

Six Months

Ended June 30,

Ended June 30,

(in dollars)

Adjusted diluted EPS1/4

Diluted EPS - GAAP

$

$

$

$

Non-GAAP adjustments

Currency diversification strategy, net

Mark-to-market on investments2

Income tax effect of above adjustments3

Total non-GAAP adjustments

Adjusted diluted EPS

$

$

$

$

Diluted weighted average common shares outstanding

Note: Amounts may not add due to rounding.

Note: The term “GAAP” in the following explanation refers to generally accepted accounting principles in the United States.

1 Adjusted net revenues, adjusted income before income taxes, adjusted net income available for common stockholders and adjusted diluted earnings per share (“EPS”) are non-GAAP financial measures.

•

We define adjusted net revenues as net revenues adjusted to remove the effect of our currency diversification strategy and our net mark-to-market gains (losses) on investments2.

•

We define adjusted income before income taxes as income before income taxes adjusted to remove the effect of our currency diversification strategy and our net mark-to-market gains (losses) on investments.

•

We define adjusted net income available to common stockholders as net income available for common stockholders adjusted to remove the after-tax effects attributable to IBG, Inc. of our currency diversification strategy and our net mark-to-market gains (losses) on investments.

•

We define adjusted diluted EPS as adjusted net income available for common stockholders divided by the diluted weighted average number of shares outstanding for the period.

Management believes these non-GAAP items are important measures of our financial performance because they exclude certain items that may not be indicative of our core operating results and business outlook and may be useful to investors and analysts in evaluating the operating performance of the business and facilitating a meaningful comparison of our results in the current period to those in prior and future periods. Our currency diversification strategy and our mark-to-market on investments are excluded because management does not believe they are indicative of our underlying core business performance. Adjusted net revenues, adjusted income before income taxes, adjusted net income available to common stockholders and adjusted diluted EPS should be considered in addition to, rather than as a substitute for, GAAP net revenues, income before income taxes, net income attributable to common stockholders and diluted EPS.

2 Mark-to-market on investments represents the net mark-to-market gains (losses) on investments in equity securities that do not qualify for equity method accounting, which are measured at fair value; on our U.S. government and municipal securities portfolios, which are typically held to maturity; and on certain other investments.

3 The income tax effect is estimated using the statutory income tax rates applicable to the Company.

4 Prior period share and per share amounts have been retroactively adjusted to reflect the four-for-one forward stock split, effected in the form of a stock dividend, on June 17, 2025.