Records Across the Board, and We Initiate at Hold: A Best-in-Class Broker Priced for Perfection into a Rate-Cut Cycle

Results vs. Consensus

Q2 2025 Scorecard

Year-Over-Year Comparison

Sequential Context

Sequentially, net revenue rose from roughly $1.43B in Q1 2025 to $1.48B (+3.5%), and reported EPS advanced from $0.48 to $0.51 (+6%). Commissions were essentially flat against a record Q1 that had been turbocharged by the April tariff-shock volatility; the more telling sequential story is that activity stayed elevated even as the S&P recovered to new highs by quarter-end, suggesting the trading engagement is structural rather than a one-quarter fear spike. Customer equity rose 16% sequentially against an 11% move in the S&P, so net new asset gathering, not just market appreciation, drove the balance growth.

Quality of Beat

Revenue: The 20% YoY revenue gain is broad-based and high-quality. Commissions (+27%) reflect both volume (DARTs +49%) and the widening active base, and would have grown an additional ~$15M, roughly 3 points, but for the SEC fee dropping to zero mid-quarter. NII (+9%) grew despite a 100bp decline in the average US Fed funds rate over the prior year, because balances did the heavy lifting. The only soft line was other fees and services (−9%), which fell on lower risk-exposure fees as clients took less risk during the April drawdown, a benign, cyclical cause.

Margins: The 75% pretax margin is the cleanest evidence of the model's quality. It is not the product of a one-time cost benefit; compensation held at 11% of adjusted net revenue while revenue grew 20%, and execution/clearing rose just 1% despite materially higher options and futures volumes. The gap between revenue growth and cost growth is the entire story of this business, and it widened again this quarter.

EPS: The $0.51 reported figure (equal to adjusted this quarter, because the usual GLOBAL currency-portfolio and principal-transaction adjustments netted near zero) is operationally driven. The public company's effective tax rate of 18.1% sits in its normal range, so there is no tax-rate flattery. The one item to keep in view is the $26M tax-recovery credit in NII; it is real cash but non-recurring, and modeling forward NII off the $834M ex-item base is the more conservative approach.

Revenue Composition

Interactive Brokers reports as a single electronic-brokerage business rather than in product segments, so the most useful decomposition is by revenue line. The two pillars, commissions and net interest income, together make up roughly 93% of net revenue, and the balance between them is the central modeling question for the stock.

Net Interest Income

NII is the largest and most-scrutinized line because it ties the income statement directly to two things outside management's control: benchmark rates and customer cash. This quarter it was a record despite falling rates, because the balances grew faster than the rates fell. Customer credit (cash) balances reached $143.7B (+34%), segregated-cash interest income rose 2% on higher balances even as yields slipped, and securities lending had its strongest quarter in some time as a handful of hard-to-borrow names finally appeared after a long dry spell.

"Despite this decline, our segregated cash interest income was up 2% on higher balances. While margin loan interest decreased 6% on lower rates, but was bolstered by higher lending balances. The average duration of our investment portfolio remained at less than thirty days." — Paul Brody, CFO

The short-duration posture (sub-30-day portfolio) is deliberate: with the yield curve inverted, IBKR earns more at the front end and avoids duration risk, while keeping a tight asset-liability match. The cost of that conservatism is that NII reprices quickly when the Fed cuts, which is the heart of the bear case below.

Assessment: NII growth through a rate-cut year is the single most important proof point for this stock. It held this quarter, but the test gets harder as cuts arrive; the offset has to keep coming from balance growth (deposits, margin loans, securities lending), and management will have to demonstrate that quarter after quarter.

Commissions

Commissions of $516M (+27%) were a record, with options and futures both setting volume records and stock share volume up 31%. Commission per cleared commissionable order fell to $2.05, but the decline is benign: it reflects the SEC fee going to zero (a pass-through) and the smart order router capturing more exchange rebates (which lower both the gross commission and the matching execution cost). The take-rate optics are worse than the economics.

"Our overnight volumes grew over 170% from second quarter 2024 to second quarter 2025." — Milan Galik, CEO (read by Nancy Stuebe, IR)

Assessment: Commission growth is being driven by the active, sophisticated, increasingly international client base IBKR is built for. Overnight trading, where IBKR has a structural product-breadth advantage, is the most interesting incremental driver and a genuine differentiator versus US-centric competitors.

Other Fees, Other Income

Other fees and services slipped 9% to $62M on lower risk-exposure fees, partly offset by higher market-data and FDIC-sweep fees, a cyclical rather than structural decline tied to the cautious April risk posture. Other income was a $42M gain spanning the GLOBAL currency-diversification strategy, investment marks, and principal transactions; much of this is excluded from adjusted earnings and should be treated as noise quarter to quarter.

Key Operating Metrics

Key Topics & Management Commentary

Overall Management Tone: Management was confident and matter-of-fact, presenting records as the expected output of a system rather than a surprise. Chairman Thomas Peterffy was unusually bullish on the macro setup for brokerage, while CEO Milan Galik's prepared remarks leaned into product breadth (overnight trading, event contracts, crypto) as the durable growth vectors. The only visibly unsatisfied note was Galik's candid disappointment with crypto market share, which management treated as a problem to fix rather than a setback to spin.

Account Growth Is Accelerating, Not Maturing

The headline operating story is that account formation reaccelerated even as the base grew larger. 250,000 net new accounts in the quarter, 528,000 year-to-date (more than the firm added in all of 2023), and the four millionth customer arriving in Q3, one year after the three millionth. Crucially, this is happening without a proportional cost increase because onboarding is highly automated.

"Our application processing is highly automated and continually becoming even more so, allowing us to handle surges in new accounts efficiently without adding significantly to our headcount or cost base." — Milan Galik, CEO (read by Nancy Stuebe, IR)

Assessment: This is the core compounding flywheel: more accounts bring more equity, more cash, and more trading, each of which feeds commissions and NII, at near-zero incremental cost. As long as account growth holds in the 25%+ range, the revenue algorithm largely takes care of itself.

The Rate-Cut Sensitivity That Defines the Stock

Net interest income is roughly 58% of net revenue, and the Fed is expected to cut. Management put precise numbers on the exposure: a 25bp US cut reduces annual NII by ~$73M, a 25bp cut across non-US benchmarks by ~$8M, and a full 100bp across all benchmarks by ~$335M (up from a ~$307M estimate a year ago, as the balance sheet has grown).

"At a high level, a full 1% decrease in all benchmark rates would decrease our annual net interest income by $335 million. This takes into account rate-sensitive customer balances and firm equity." — Paul Brody, CFO

The bull-case counter is embedded in the same disclosure: over the prior twelve months the US Fed funds rate did fall 100bp, and yet NII still rose, an annualized $225M increase driven by higher balances. Balance growth has, so far, more than offset rate drag.

Assessment: This is the swing factor for the next several quarters and the explicit trigger for our rating. If balances keep outrunning cuts, NII grows and the bear case deflates; if account or deposit growth slows into a cutting cycle, the largest revenue line stalls. We need to see the offset hold before paying up.

Record Customer Cash: the Deposit Engine

Customer credit balances hit a record $143.7B (+34%). IBKR pays a high rate on idle cash (currently 3.83% on qualified USD balances) and still earns a wide spread, because it deploys the cash at the short end and runs almost no credit risk. The cash is sticky: clients leave it on the platform between trades, and June saw the strongest monthly credit-balance build since March.

"The high interest rates we pay on customer cash, currently 3.83% on qualified US dollar balances, is a significant attraction to new customers." — Paul Brody, CFO

Assessment: Paying clients a competitive rate is both a customer-acquisition tool and the raw material for NII. It is a virtuous loop while rates are elevated; the question is how the spread compresses as benchmarks fall and IBKR chooses how much of the cut to pass on.

Overnight Trading: the Structural International Edge

Overnight volumes grew over 170% YoY. IBKR offers the broadest overnight product set, 10,000+ US stocks and ETFs plus index futures/options and global bonds, which matters because a large share of its clients sit in Europe and Asia and trade US markets during their own daytime. Management frames overnight as a decade-long structural trend akin to the earlier expansion of pre- and post-market hours.

"Over time, the differences between the trading hours will not disappear, but will diminish for sure ... we will see more and more overnight trading in the future." — Milan Galik, CEO

Assessment: This is a genuine, hard-to-replicate edge tied to IBKR's global footprint and execution infrastructure. It is small today but compounding fast, and it deepens the moat against US-centric retail brokers.

Crypto: Building the Offering, Frustrated by Share

IBKR is expanding crypto through its Zero Hash partnership (in which it participated in a capital raise to hold its ownership steady), with a roadmap including stablecoin account funding, crypto asset transfers, and staking later in 2025, plus geographic expansion focused on Europe. The candor on results was notable: the CEO is openly disappointed with how little share IBKR has captured given its lower pricing.

"My disappointment in terms of how much market share we are getting in the crypto space remain. I am still disappointed given how much less expensive we make it." — Milan Galik, CEO

Assessment: Crypto is optionality, not a thesis driver today. The asset-transfer capability is the most important near-term unlock, since the inability to transfer existing crypto holdings is the structural friction keeping clients elsewhere. Worth tracking, not worth paying for yet.

ForecastEx and Event Contracts

ForecastEx, IBKR's event-contract marketplace, went live for retail clients across most of Europe (joining the US, Canada, and Hong Kong) and expanded into financial-market contracts on indices, FX, and crypto. Management reports strong early engagement, and draws a parallel between these yes/no contracts and the booming zero-day index options.

Assessment: A small but strategically interesting adjacency that leans into the same active-trader base. Regulatory breadth (operating these contracts across jurisdictions) is itself a moat. Immaterial to near-term numbers.

Stock Tokens: Management Dismisses the Competitive Threat

Asked about tokenized US equities being launched by Robinhood and Kraken for European clients, management gave an unusually detailed, pointed rebuttal: IBKR's European clients already trade more than 10,000 real US shares and ETFs around the clock, whereas the token products are derivatives or secured notes on a few hundred symbols, with no ownership, no portability, and (per Robinhood's own disclosure) materially higher cost. Management cited a Wall Street Journal report of token prices dislocating wildly from the underlying on illiquid weekend trading.

"So all in all, stock tokens at this time seem like a great opportunity to do much worse than buying an ordinary share." — Milan Galik, CEO

Assessment: The rebuttal is substantive, not defensive hand-waving; IBKR's real-share, low-cost, portable offering is genuinely superior for its sophisticated base. The risk is less about IBKR's clients defecting and more about whether tokenization lowers the barrier for a new cohort of less-sophisticated international investors that IBKR does not currently serve.

Securities Lending Inflects

Securities lending had its strongest quarter in a while as a few hard-to-borrow "high flyers" finally appeared after a long industry dry spell. On a like-for-like basis (reclassifying cash-collateral interest), sec-lending net revenue would have been $251M versus $194M a year ago, a 29% increase.

Assessment: Sec lending is a high-margin, hard-to-forecast kicker that rises with more accounts, more equity, and more short interest. A pickup in IPO and M&A activity would extend it, but management was careful not to promise a trend off a couple of hot names.

Introducing-Broker Pipeline

The introducing-broker channel, where IBKR provides the back-end infrastructure for other brokers, saw more integrations in Q2 than Q1, with a strong pipeline of new entrants, existing firms broadening their offering, and notably some firms that previously chose a competitor or an in-house build now returning to IBKR.

"Some firms that we spoke to in the past who at the time decided not to go with Interactive Brokers ... are coming back around to us and reengaging. They do realize that our offering is superior." — Milan Galik, CEO

Assessment: The IB channel is a high-quality, B2B growth vector that scales clients without retail marketing spend. "Win-backs" from in-house builds are a strong signal of the cost and capability gap IBKR has opened.

Capital Allocation: Split Done, Dividend Up, M&A Discipline

The 4-for-1 stock split completed June 17, and the annual dividend was raised earlier in 2025 (from $1.00 to $1.28 pre-split, $0.32 split-adjusted). On M&A, management remains willing but disciplined, seeing few targets at a sensible price, and frames returning capital via dividends as the better use for now. The firm carries no long-term debt and $18.5B of equity (+22%).

"While we have not stopped looking at potential acquisitions, we realize there are few opportunities at a price that makes sense for us." — Milan Galik, CEO

Assessment: Conservative, shareholder-aligned capital allocation. The fortress balance sheet is a competitive weapon (it wins introducing-broker and institutional business on counterparty strength) more than a valuation lever, but it removes balance-sheet risk from the equation entirely.

Outlook & Rate Sensitivity

IBKR does not issue formal revenue or EPS guidance. The closest thing to a forward framework is its detailed interest-rate sensitivity, which functions as the de facto outlook for the largest revenue line. Management updated the disclosure as follows.

The base for these estimates is June 30 balances with Fed funds effective at 4.33%; ~27% of customer cash is non-USD. The key qualifier management repeats is that any growth in interest-earning assets reduces the impact, which is precisely what has happened: in the trailing year, a realized 100bp US cut was more than offset by balance growth, and NII still rose.

Implied setup: The market is pricing Fed cuts in 2H 2025. Mechanically, each 25bp clip costs ~$73M of annual NII; IBKR needs roughly $1B+ of incremental average interest-earning balances to neutralize each 25bp through volume. Given 34% balance growth, that math is achievable but not automatic, and it tightens as the cut path steepens.

Our framing: Treat NII conservatively off the $834M ex-one-time base, assume the Fed cuts, and let the balance-growth offset be the upside surprise rather than the base case. That is the prudent way to underwrite the stock here.

Analyst Q&A Highlights

Whether Account Growth Is About to Decelerate

The opening question pressed on prior management commentary that had flagged decelerating account growth, against a quarter that in fact grew accounts ~32%. The answer was a candid admission that management deliberately sets a low bar.

Q: "The commentary was regarding decelerating account growth. However, account growth in the quarter was still really strong, 32% clip ... Should we expect somewhat slower growth in the summer months?"
— Craig Siegenthaler, Bank of America

A: "So I always like to overdeliver. That is why I projected lower account growth than I really believed would take place, and I continue to do that for the future."
— Thomas Peterffy, Founder & Chairman

Assessment: A revealing exchange about management's conservatism bias. The "sandbagging" admission means stated caution about growth should be discounted, but it also means investors get little forward visibility and must underwrite the trend themselves. Net positive for the business, neutral for forecasting precision.

The Nonlinearity of Rate Sensitivity

A detailed question probed why the dollar sensitivity to a 25bp move appeared lower this quarter despite a higher non-USD cash mix. The answer surfaced an important wrinkle: several low-rate currencies are near or below zero, which compresses the spread asymmetrically.

Q: "It looks like this quarter versus last quarter, maybe a slightly higher percentage of cash is not in US dollars, but the sensitivity to a 25 basis point change in rate seems like it is a much lower dollar number ... what is the driver of that lower sensitivity?"
— Benjamin Budish, Barclays

A: "There are some low interest rate currencies ... that are either nearing or just breached the zero line back into negative territory. So that leads to nonlinearity of the up and down scenarios ... the full spread gets compressed, and then it returns."
— Paul Brody, CFO

Assessment: A useful nuance: not all 25bp cuts hurt equally, and the non-USD book can buffer or amplify depending on where rates sit relative to zero. It makes the headline sensitivity figures a guide rather than a precise forecast, and slightly reduces the cleanliness of the bear math.

The Tokenized-Equity Competitive Threat

An extended question on tokenized US equities launched by crypto-adjacent and neobroker competitors gave management a platform to contrast its real-share offering against derivative tokens.

Q: "Any perspectives on the tokenized equity products that we are seeing across a variety of brokerages and crypto firms for European customers on US stocks ... is it something that you would consider offering? And whether this product represents any sort of additional competition in Europe?"
— James Yaro, Goldman Sachs

A: "What they put online in the form of tokens on US stocks is a fundamentally worse product than what our European clients had access to for years ... the client does not have ownership interest in the stock, instead he or she has an OTC contract ... so stock tokens at this time seem like a great opportunity to do much worse than buying an ordinary share."
— Milan Galik, CEO

Assessment: Management's rebuttal is detailed and credible, not dismissive. The genuine risk is not client defection but whether tokenization eventually expands the addressable market among less-sophisticated investors IBKR does not target. For now, the competitive moat around IBKR's core base holds.

Durability of the Securities-Lending Uptick

A question on the improved securities-lending result asked how diversified the gains were and whether a rising IPO/M&A backdrop would sustain them.

Q: "I was hoping to expand upon your comments around sec lending, clearly improved this quarter ... Is it reasonable to assume that that should be on an upward trajectory given the kind of current trends?"
— Dan Fannon, Jefferies

A: "In terms of how diverse it was, not especially. There are several high flyers in there ... a few high flyers can make a substantial difference in the overall P&L. As to what is going to happen in the future, you tell me."
— Paul Brody, CFO

Assessment: Refreshingly honest. Management would not extrapolate a trend off a handful of hot names, which is the right posture. Sec lending is a real but lumpy kicker; modeling it as a steady grower would be a mistake.

What Drove the June Surge in Client Cash

A question on the sharp June build in client credit balances sought to separate new deposits from rebalancing.

Q: "Client credit balances grew over 6% in the month of June, which is the highest since March. Can you speak about the main drivers? Was it more new cash being deposited, rebalancing, or something else?"
— Kyle Voigt, KBW

A: "I think it was a combination of those things. New cash coming in was as strong as it has been in the last several months ... April was particularly strong, both in taking in new cash and in that risk-off environment when a lot of stocks were being sold, that generates cash balances."
— Paul Brody, CFO

Assessment: Confirms the cash build is driven by genuine new-money inflows, not just defensive de-risking, which is the higher-quality source. Sticky, growing client cash is the fuel for NII and the most important balance-sheet item to watch into a cutting cycle.

Crypto Market-Share Disappointment

A follow-up returned to the firm's crypto traction, asking whether the build-out reflected a recognition that a more robust offering is needed to attract retail.

Q: "Last quarter you said you were somewhat surprised at how little market share you had taken since beefing out the crypto offering ... is this push to build out the offering a factor of recognizing you need a more robust offering to attract retail?"
— Patrick Moley, Piper Sandler

A: "My disappointment in terms of how much market share we are getting in the crypto space remain ... but I do expect, and I do hope for, some asset transfers coming our way, which right now is impossible."
— Milan Galik, CEO

Assessment: Management is clear-eyed that price alone has not won crypto share, and that the asset-transfer friction is the binding constraint. It frames crypto correctly as a fixable distribution problem rather than a strategic miss, but also confirms it is not yet contributing meaningfully.

What They're NOT Saying

1. No quantified crypto contribution: management discussed the crypto roadmap at length but never sized its revenue or account contribution, which strongly implies it is still immaterial.
2. Limited color on the public company's ~25% economic interest: reported EPS reflects only the public company's minority stake in the operating businesses, a structural feature that newer investors often miss; management does not dwell on it.
3. No spread-management guidance into cuts: management quantified gross rate sensitivity but did not say how much of future cuts it would pass through to the 3.83% customer rate, leaving the net spread trajectory opaque.
4. Other-fees softness underexplained: the −9% decline in other fees and services was attributed to lower risk-exposure fees, but there was little detail on whether that mix shift is cyclical or persistent.
5. The one-time NII items got light framing: the $26M tax-recovery credit and the SEC-fee distortion were disclosed, but the "record net interest income" headline leans on figures that the ex-item base modestly tempers.
6. No formal guidance, as always: structural to IBKR, but it means investors get rate sensitivity and operating trends instead of a revenue or margin outlook, raising the burden of independent forecasting.

Market Reaction

• Pre-print setup: IBKR closed at $59.43 entering the print, at fresh all-time highs, up 34.5% year-to-date, up 14.2% over the trailing 30 days, and up 92.7% over the trailing twelve months. The chart was extended on every horizon.
• Reaction-day move: the stock gapped up 7.4% at the open and closed up 7.8% at $64.05 (+$4.62), on roughly 2.8x normal volume (15.0M vs. a 5.3M 30-day average). It was the largest single-session gain of the trailing year, and almost entirely idiosyncratic: the S&P was flat on the day.

The reaction is straightforward to explain: a clean double beat with records on commissions, NII, total net revenue, and pretax income, a record 75% pretax margin, DARTs up 49%, and account growth that reaccelerated. There was nothing in the print to sell. The more interesting question is what the +7.8% does to forward risk/reward: it pushes an already-premium multiple higher into a quarter where the Fed is expected to begin cutting, which is the basis for our cautious initiation.

Street Perspective

Debate: Can NII Grow Through a Fed Cut Cycle?

Bull view: It already has. Over the past year a realized 100bp US cut was more than offset by balance growth, and NII still rose; with accounts and cash compounding 30%+, deposit and margin-loan volume will keep outrunning the rate drag.

Bear view: The offset gets harder as cuts deepen and compound, each 25bp costs ~$73M annually, spreads compress as IBKR competes on the 3.83% customer rate, and a slowdown in account growth would remove the very engine the bull case relies on.

Our take: The bulls are right about the mechanism and the bears are right that it is not guaranteed. This is the crux of the stock, and it is precisely why we initiate at Hold rather than Outperform: we want to see the offset hold for another quarter or two into actual cuts before underwriting it as the base case.

Debate: Is the Valuation Justified After a 93% Run?

Bull view: A business compounding revenue 20%, accounts 32%, and equity 34%, at a 75% pretax margin with no debt and optionality in crypto, event contracts, and overnight trading, deserves a premium multiple; quality this rare is worth ~30x.

Bear view: ~30x forward earnings is a full multiple for a business whose largest revenue line is rate-sensitive and about to face a headwind; after a near-double in twelve months, the easy money is made and the margin of safety is gone.

Our take: We side modestly with the bears on entry timing, not on business quality. The franchise merits a premium, but paying an all-time-high multiple the day after a 7.8% pop into a rate-cut cycle is poor risk/reward. We would rather buy quality on a pullback or on confirmation than chase it here.

Debate: Does the Ownership Structure Cap the Multiple?

Bull view: The structure is well understood, the founder's alignment is a feature not a bug, and the consistent dividend growth plus the recent split signal increasing shareholder friendliness.

Bear view: The public company holds only a minority economic interest in the operating businesses and the float is small, which concentrates control, limits institutional ownership flexibility, and can leave the stock more volatile than the fundamentals warrant.

Our take: The structure is a modest, persistent overhang rather than a thesis-breaker. It does not change the quality of the business, but it is a reason the stock can trade with more volatility around prints than a comparable single-class name.

Model Framework (Initiation)

As this is our initiation, we are establishing a framework rather than revising an existing model. The key drivers and our working assumptions:

Valuation framing: At $64.05, IBKR trades at roughly 30x forward earnings on an annualized run-rate near $2.05, a clear premium to the discount-broker group. We view that multiple as fair for the quality but not cheap; it embeds continued high-20s account growth and NII resilience through the cut cycle. Our Hold reflects a balanced 12-month risk/reward at this price, with the upgrade path tied to NII holding through cuts or a multiple reset.

Thesis Scorecard (Initiation)

We establish the standing thesis with this initiation. The pillars below are what we will grade every quarter going forward.

Overall: The business pillars are confirmed in full; this is a genuinely best-in-class franchise compounding at scale. The constraint is entirely price and the rate cycle, not quality.

Action: Initiate at Hold. Hold/accumulate on weakness. Upgrade triggers: (1) NII grows through actual Fed cuts as balance growth offsets the drag, or (2) a valuation reset restores margin of safety. Downgrade triggers: account-growth deceleration into the cut cycle, or evidence the customer-cash spread compresses faster than balances grow.