How Freeport Markets Built Portfolio Charts Without the Infrastructure Headache

Freeport Markets integrated Zerion API to power portfolio tracking, charts, and transaction history for its AI-driven investing platform. It picked Zerion over alternatives because of one thing most API providers get wrong: responding fast to questions.

What is Freeport Markets?

Freeport Markets is an internet-native investing platform with a big premise: collapse the distance between world events and market action. 

The app pulls from Twitter, blogs, podcasts, news articles, and Reddit threads, then uses AI to filter noise and surface trading-relevant signals. Think of it as a personal hedge fund analyst that watches the internet for you.

The product goes beyond crypto. 

Freeport users can access pre-IPO equities, tokenized stocks and ETFs, perpetual futures, and DeFi yields. Everything is available from a self-custodial wallet. The team launched their mobile app in early 2026 and is backed by Y Combinator.

But building a product that spans spot crypto, perps, lending protocols, and prediction markets means you need portfolio data that keeps up. That's where the infrastructure challenge starts.

The challenge: Charts are harder than they look

Portfolio charts seem like a basic feature. 

Every mainstream finance app has them. But for an onchain product, getting chart data right is surprisingly hard.

Showing a user's portfolio performance over time requires aggregating token balances, DeFi positions, and transaction history across multiple chains. The next step is to compute portfolio valuations at each historical point. 

Most crypto wallet providers skip this entirely or deliver incomplete results.

Freeport tried another provider's portfolio endpoint early on. The data worked for basic positions, but the team ran into a bigger problem: there was no way to get help. No Telegram group, no response to emails, no communication channel at all.

"If you build a product for the long term, you can't really stick with partners that don't respond at all to you," said Lihong Wang, CEO of Freeport Markets.

The team found Zerion through a referral from an investor and didn't look back.

The solution: Zerion API

Freeport integrated Zerion API across three core endpoints: portfolio charts, token positions, and wallet transactions.

The portfolio chart endpoint was the main draw. Freeport needed historical portfolio performance data that most providers either don't offer or deliver inconsistently. Zerion API returns chart data for both individual assets and overall wallet portfolio performance, which Freeport feeds directly into its app's portfolio views. 

"Out of everyone that we've looked at, Zerion does a much better job at charts and portfolio," Wang said.

Token positions give Freeport's users a real-time view of what they hold across chains. Meanwhile, the transactions endpoint powers the activity feed that ties portfolio changes back to specific trades and interactions.

As Freeport expands into more DeFi protocols (including perp dexes like Hyperliquid and lending platforms like Aave), the DeFi positions endpoint is next on the integration roadmap. Zerion API tracks positions across 8,000+ protocols, which means Freeport won't need a separate provider for each new protocol they add.

Why communication matters

API providers tend to compete on coverage, latency, and pricing. Those things matter. 

But Freeport's experience highlights something that doesn't show up on comparison charts: what happens when you need help.

"The thing I liked about you guys is, whenever we realized we needed something, we'd text the Telegram, and then you actually respond," Wang said.

For a team that had just launched and was iterating fast, that feedback loop was the difference between shipping a fix in a day and filing a support ticket into the void. Freeport's previous provider offered no direct communication channel. And for an early-stage product, that's a dealbreaker.

What's next

Freeport is expanding its product rapidly. 

The team plans to add more perpetual DEX integrations, prediction markets support, and deeper DeFi protocol coverage. As each new asset type comes online, Zerion API's DeFi positions endpoint will handle the portfolio tracking layer without additional infrastructure work.

For teams building products that span multiple asset types and chains, Freeport's story is a reminder: endpoint coverage matters, but so does answering messages.

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