MQ · Marqeta, Inc.

The thesis

Marqeta's card-issuing platform has won two programs in a week: stablecoin-backed cards with Coinbase on 16 October 2026 and the Square Credit Card with Block on 19 October 2026. That gives the shares a modestly better-than-even case against the S&P 500. The third-quarter report on 3 November 2026 settles it. It shows whether results clear the low bar the company set itself, which is 6–8% net revenue growth.

The business itself is scaling. In the second quarter of 2026, the company's 8-K reported total processing volume (TPV, the dollar value of card payments run on the platform) of $120.4 billion, up 32% from a year earlier. Net revenue was $176.0 million, up 17%. Adjusted EBITDA (earnings before interest, taxes, depreciation and amortization, excluding certain items) was $37.4 million, up 31%. GAAP net income was $7.6 million. Chief executive Mike Milotich called it the second straight quarter of GAAP profit.

The weak point is the guidance. For the third quarter, Marqeta guided net revenue growth of 6–8% and gross profit growth of 5–7%. That is well below the 17% just reported. The company said mix is shifting toward card programs with little or no program management, which it does less of.

The narrative is accelerating: two named customer announcements landed between 16 October 2026 and 19 October 2026, and the shares closed at $18.75 on 20 October 2026, 7.7% below their 52-week high of $20.32.

Bullish and bearish views on Marqeta, Inc.

The bull case on Marqeta, Inc. (MQ), in brief: Block deepens the anchor relationship. The bear case: Guided growth slows sharply.

Bull case

• Block deepens the anchor relationship. On 19 October 2026 Block said it selected Marqeta to run the Square Credit Card on the American Express network. Benzinga reported the same day that this puts Square's debit, prepaid and credit programs on one platform. Trade-press coverage of the card's original launch named i2c as its processor, so this is a share gain inside Marqeta's largest customer.
• Stablecoin cards add a new client type. On 16 October 2026 Marqeta and Coinbase announced stablecoin-backed cards for businesses, built on Coinbase's Base network. The cards are aimed at both crypto-native and traditional firms. This gives Marqeta a client group beyond its existing fintech base.
• Profit is growing faster than revenue. Second-quarter 2026 adjusted EBITDA rose 31% on 17% revenue growth, a 21% margin. Full-year 2026 guidance calls for adjusted EBITDA growth in the low 30s against 12–13% net revenue growth.
• The company is buying back its own shares. The board authorized up to $150 million of buybacks on 3 August 2026. This came after $93.9 million of repurchases in the first half of 2026. Cash and equivalents stood at $691.4 million on 30 June 2026.

Bear case

• Guided growth slows sharply. Third-quarter 2026 guidance calls for 6–8% net revenue growth, down from 17% in the second quarter. If the report only matches that range, a stock trading near its high has little to show for it.
• Revenue lags processing volume. Second-quarter TPV grew 32%, but net revenue grew only 17%. The company attributed the gap to mix moving toward programs with minimal or no program management. Each dollar processed is earning less.
• Most analysts are neutral. MarketBeat counts one Buy, eight Holds and two Sells. Its average price target is $19.75, about a dollar above the 20 October 2026 close. Keefe, Bruyette & Woods raised its target to $19 from $18 on 5 August 2026 and kept a hold-type rating.
• One customer dominates. The Block win deepens Marqeta's dependence on a single client. Marqeta's filings show the Square Debit Card agreement was extended in 2023 to run through 30 June 2028. Any change in Block's terms would hit the whole case.

Price setup

The shares closed at $18.75 on 20 October 2026, based on split-adjusted daily closes. That is 7.7% below the 52-week high of $20.32 and 12.1% above the level three months earlier. The 14-day relative strength index (RSI, a momentum gauge where readings above 70 are usually called overbought) was 67.6. After two announcements in four days, the shares are stretched but have not reached the overbought line.

The crowding signs are momentum near that line, a price within reach of the 52-week high, and an earnings report nine trading days away. Share supply is shrinking, not growing: the company is buying back stock under its $150 million authorization.

A 1-for-4 reverse stock split took effect on 30 June 2026. Price targets and share prices quoted from before that date are on the old scale.

Catalysts, next 30 days

• Same call: any update to full-year 2026 guidance, currently 12–13% net revenue growth and low-30s adjusted EBITDA growth. A raise or cut here weighs more than the quarter's own result.

Elapsed catalysts

• The company confirmed the date in a Business Wire release on 25 September 2026. The report sets net revenue growth against the 6–8% guide and gross profit growth against 5–7%. It is also the first chance for management to say when the Block credit and Coinbase stablecoin programs start adding volume. (passed 26d ago)

What would change the view

The case breaks if the 3 November 2026 report shows net revenue growth below the 6–8% guide, or if full-year 2026 guidance is cut from 12–13%. Either would mean the recent customer wins are not reaching revenue fast enough to offset the mix shift. A sign that Block is moving programs off the platform or repricing them would also end the case.

On price, a daily close below $16.50 would wipe out the three-month advance and the gain from the October customer news. The bull case would no longer be visible in the shares.

The case strengthens if third-quarter net revenue growth comes in above 8% and management gives a launch timetable for the Square Credit Card or the Coinbase cards.

What it trades with

Marqeta sits in the fintech and consumer-credit payments group alongside Mastercard (MA), Riskified (RSKD) and Priority Technology (PRTH). The group's momentum cooled through August and September and picked up again in October. Mastercard's launch of its global money platform on 15 October 2026, its first major integration since buying stablecoin firm BVNK in August, is part of the same stablecoin-payments story as Marqeta's Coinbase deal.

Marqeta's results depend on Block's spending volumes, so a weak Block report or weaker US consumer spending would hit it directly. The stablecoin link to Coinbase is a newer and smaller factor. Coinbase shares fell 3% on the day the deal was announced, 16 October 2026.