Alpaca Raises $135M to Build Agent-First Brokerage APIs

Building the Pipes for Software That Trades

There is a version of the AI-in-finance story that is all about the app you open on your phone. This is the other version — the one about whether the plumbing underneath can handle software placing the orders. On July 16, 2026, Alpaca announced a $135 million equity round for what it calls agent-first brokerage infrastructure, part of a total financing package the company puts at $435 million.

• $135M equity round led by Peak XV, with Elefund, Unbound and Opera Tech Ventures (BNP Paribas Group's VC arm) participating
• Total financing package reported at $435M, including roughly $300M in debt led by BMO and Payward, Kraken's parent
• Alpaca reports tokenized equity assets under custody above $1.5 billion
• The company says monthly active API users nearly quadrupled in six months, with revenue doubling annually for three straight years

What Does "Agent-First" Brokerage Infrastructure Mean?

Alpaca is a self-clearing broker-dealer that exposes its capability as an API rather than an app. That distinction has always mattered for developers building trading products; it matters differently now that the thing calling the API might be an autonomous agent rather than a user interface. An API designed for a screen assumes a human is there to handle an ambiguity. An API designed for an agent cannot.

Self-clearing is the part worth understanding. Because Alpaca clears its own trades rather than renting that function, it controls more of the stack — which is what makes things like tokenized equity custody feasible in the first place. The company reports more than $1.5 billion in assets under custody for tokenized equities.

The Regulatory Footprint Is the Quieter Story

Alongside the funding, Alpaca has been assembling licenses: IFSCA-regulated entities acquired in GIFT City, India; UK authorization obtained; EEA passporting secured across 30 countries. For infrastructure businesses this is the actual moat. Anyone can build a trading API. Being permitted to operate one across three continents takes years and a lot of unglamorous work.

A note on the numbers: the growth metrics — assets under custody, API user growth, the revenue-doubling claim — are company-reported and not independently audited, which is standard for a private company's funding announcement but worth flagging. No post-money valuation was disclosed for this round. You may see a $1.15 billion figure attached to Alpaca in coverage; that is from the January 2026 Series D, not a new mark from this raise.

Where This Fits the AI-in-Investing Wave

We have written a lot this month about the consumer-facing edge of this shift, from Longbridge's AI-native investing platform to eToro's Tori agent app. Those products all need something underneath them, and that something is increasingly a brokerage API with self-clearing, multi-jurisdiction licensing and tokenized asset support.

The interesting signal in this round is not the dollar figure — it is who wrote the checks. A BNP Paribas venture arm and BMO on the debt side are not tourists. Their participation says the infrastructure layer for agent-driven trading is now something incumbent banks want exposure to rather than something they are waiting out. More in our stock trading section.

Sources: Business Wire — July 16, 2026; FinTech Global — July 17, 2026; Alpaca blog — July 16, 2026.