Robinhood

Affirm

Robinhood

Robinhood makes money in ways that don't involve charging users directly. The biggest revenue source is payment for order flow (PFOF) — when users place a trade, Robinhood routes it to market makers like Citadel Securities, who pay Robinhood for the right to execute the trade.

This generates hundreds of millions annually. Robinhood also earns interest on uninvested cash sitting in user accounts, margin lending (charging interest when users borrow money to trade), and Robinhood Gold — a $5/month subscription for larger instant deposits, professional research, and higher interest on cash.

Affirm

Affirm makes money from two sources. First, merchant fees — when a retailer offers Affirm at checkout, Affirm charges the merchant 5-8% of the transaction value.

Merchants pay because Affirm increases average order values by 85% and conversion rates by 20%. Second, consumer interest — on longer-term loans (6-48 months), Affirm charges interest ranging from 0% to 36% APR depending on the buyer's credit profile.

The 0% APR loans are fully subsidized by the merchant.

Robinhood

Vlad Tenev and Baiju Bhatt met as physics and math students at Stanford. After graduating, they moved to New York and started two fintech companies that sold trading software to hedge funds.

While building tools for Wall Street, they noticed something absurd: it cost brokerages essentially nothing to execute a trade electronically, but they were charging retail investors $7-10 per trade.

The math was simple. Electronic trading had driven costs to near zero, but brokerages kept the old pricing because customers didn't know better.

Tenev and Bhatt thought: what if we just charged zero? In 2013, they founded Robinhood with the explicit mission of democratizing finance — giving everyone access to the stock market with no commissions, no minimums, and a beautiful mobile app.

The app launched in 2014 with a waitlist that hit 1 million people before the product was even available. The pink-and-green design, the confetti animation when you made a trade, and the simplicity of the interface made investing feel approachable.

For millions of young Americans who had never bought a stock, Robinhood was the entry point.

Affirm

Max Levchin was one of the original PayPal Mafia — he co-founded PayPal with Peter Thiel and Elon Musk. After PayPal sold to eBay for $1.5 billion in 2002, Levchin built several companies including Slide (sold to Google for $182 million).

But he kept coming back to the same idea: consumer credit was fundamentally broken.

Credit cards were designed in the 1950s and hadn't meaningfully changed. They used opaque pricing — minimum payments that stretched debt over decades, late fees that punished the most vulnerable, and interest rates that compounded until people owed three times what they originally spent.

Levchin thought technology could do better.

In 2012, he founded Affirm with a radical proposition: transparent lending. When you buy something with Affirm, you see the exact total cost upfront — the principal, the interest, and the exact number of payments.

The total never changes. There are no late fees.

If you miss a payment, Affirm pauses your ability to buy more but doesn't charge you extra. The idea was to make lending honest.

Robinhood

Robinhood grew by making investing feel like a game. The app was designed to be addictive — swipe to trade, confetti for your first purchase, notifications about stock movements.

It was investing designed for the smartphone generation. Critics called it "gamification of finance." Users called it the first trading app that didn't feel like it was designed in 1997.

The referral program was massive. Both the referer and the new user got a free stock when someone signed up.

People were getting free shares of Apple or Ford just for downloading the app. It spread through college campuses like wildfire.

By 2020, the average Robinhood user was 31 years old — decades younger than the average brokerage customer.

Zero commissions forced the entire industry to follow. In October 2019, Charles Schwab, TD Ameritrade, E-Trade, and Fidelity all dropped their trading commissions to zero within days of each other.

Robinhood had single-handedly destroyed the commission-based brokerage model that had existed for decades.

Affirm

Affirm grew by landing big merchant partnerships. The breakthrough was Peloton in 2019 — when Peloton offered Affirm financing at checkout for its $2,000+ exercise bikes, both companies exploded.

A huge portion of Peloton purchases were financed through Affirm. Then came Walmart, Amazon, Shopify, and Target.

Each major retailer partnership brought millions of new consumers.

The "no hidden fees" message cut through. In a world where every financial product has fine print, Affirm's transparency was refreshing.

Levchin made honesty the brand. Every ad, every checkout screen, every email showed the exact total cost with zero surprises.

Consumers who had been burned by credit cards were drawn to a product that treated them like adults.

The Shopify integration in 2020 was a game-changer. Shop Pay Installments, powered by Affirm, made BNPL available to hundreds of thousands of Shopify merchants instantly.

Overnight, Affirm went from needing individual merchant partnerships to being embedded in an entire e-commerce ecosystem.

Robinhood

GameStop was the worst week in Robinhood's history. In January 2021, Reddit's r/WallStreetBets community drove GameStop stock from $20 to $483.

Millions of Robinhood users were buying. Then on January 28, Robinhood restricted buying of GameStop and several other meme stocks.

Users could only sell, not buy. The stock crashed.

The backlash was nuclear. Users accused Robinhood of siding with hedge funds against retail investors.

Vlad Tenev was dragged before Congress. The real reason was less sinister but equally damaging — Robinhood's clearinghouse (DTCC) demanded $3 billion in additional collateral due to the extreme volatility, and Robinhood didn't have it.

They had to raise $3.4 billion in emergency funding over a weekend. The company that built its brand on democratizing finance had restricted the most democratic stock trade in history.

The payment for order flow controversy never goes away. Critics argue that PFOF creates a conflict of interest — Robinhood profits by routing user trades to market makers rather than getting users the best possible price.

The SEC has considered banning PFOF entirely. If that happens, Robinhood loses its largest revenue source.

Post-IPO performance was brutal. Robinhood went public in July 2021 at $38 per share.

The stock briefly hit $70 on meme stock momentum, then cratered to under $8 by mid-2022 — a 90% decline. The company laid off 23% of staff in April 2022 and another 23% in August 2022.

Affirm

Peloton dependency almost sank the company. At its peak, Peloton accounted for nearly 30% of Affirm's revenue.

When Peloton's business collapsed after COVID — demand evaporated, the stock crashed 95%, and the company laid off thousands — Affirm lost its biggest customer practically overnight. The stock fell from $170 to $9.

Affirm has since diversified, but the Peloton lesson was brutal.

Credit risk is the fundamental challenge. Affirm is lending money to consumers.

If the economy goes into recession and people stop paying, Affirm takes the losses. Delinquency rates have crept up as the post-COVID economy normalized.

Unlike banks that have decades of lending data and massive balance sheets, Affirm is still proving its underwriting models work through a full economic cycle.

The BNPL category has attracted regulatory scrutiny. The CFPB has warned that buy-now-pay-later products can lead to debt accumulation — consumers stacking multiple BNPL loans across different providers.

Affirm argues its model is fundamentally different from competitors because it underwrites every transaction and never charges late fees, but the regulatory risk applies to the entire category.

Robinhood

Robinhood is a stock, options, and crypto trading app. The core product lets you buy and sell stocks, ETFs, and options with zero commissions.

Robinhood Crypto adds trading for Bitcoin, Ethereum, and other cryptocurrencies. Robinhood Gold is the premium tier — higher interest on cash, larger instant deposits, and Morningstar research reports.

Robinhood Cash Card is a debit card that earns cashback and rounds up purchases to invest spare change. Robinhood Retirement offers IRA accounts with a 1% match on contributions.

Robinhood Legend is their new desktop trading platform aimed at active traders.

Affirm

Affirm Pay-over-Time lets shoppers split purchases into biweekly or monthly payments at checkout. Affirm Pay-in-4 is the interest-free option — four payments over six weeks with no interest.

The Affirm Card is a physical debit card that lets you use Affirm anywhere Visa is accepted, not just at partner merchants. Affirm Savings is a high-yield savings account.

The Adaptive Checkout technology shows each customer personalized payment options based on their credit profile in real time.

Robinhood

Sequoia Capital, Ribbit Capital, NEA, Index Ventures, Andreessen Horowitz, DST Global, D1 Capital

Affirm

Khosla Ventures, Lightspeed Venture Partners, Founders Fund, Spark Capital, GIC, Baillie Gifford