SizeProp Raises Pre-Seed Round Led by Igloo Inc. to Build the Infrastructure for Crypto Prop Trading
George Town, Cayman Islands, May 19th, 2026, Chainwire
The crypto prop firm has granted over $50M in prop trading capital to 3,500+ traders across 150+ countries.
SizeProp, the crypto-native proprietary trading firm, today announced the close of its pre-seed funding round led by Igloo Inc., the company behind Pudgy Penguins. The round was structured as a SAFE.
Windra Thio, Founder of SizeProp: “Igloo’s backing isn’t just capital, it’s validation that prop trading is a real, fast-moving category. We don’t see other firms as competitors; every firm growing this space gives more talented traders a real shot. The bigger it gets, the better for everyone.”
Since launching in late 2025, SizeProp has:
- Fully integrated with Hyperliquid and Trade.xyz offering commodities, stocks, forex 24/7 perpetual futures.
- Onboarded thousands of new users into prop trading, generating over $3B of trading volume
- Granted over $50M in prop trading capital to traders across 150+ countries
- Processed same-day USDT payouts, with a public record of never refusing a payout
- Built a proprietary crypto trading terminal from scratch, not a white label of MT4/MT5, sourcing tier-one exchange orderbooks
- Launched the first incentivized rewards program in crypto prop trading
A New Wave in Crypto Trading
Crypto prop trading is emerging as one of the fastest-growing categories in the industry, driven by the explosion of perpetual swap volumes, a generation of skilled traders who don’t want to deposit their own capital, and a category historically dominated by whitelabeled forex tooling that was never built for crypto.
What’s next
SizeProp is focused on a few things over the next 12 months:
- Onboarding non-crypto-native traders. Making the platform approachable for traders coming from forex, equities, and traditional prop firms, not just crypto natives
- Reaching developing regions. Doubling down on markets where prop trading is changing lives the most, including India, Nigeria, Turkey, Brazil, and Southeast Asia.
- Building closer ties with the broader Igloo network.
- Growing the team across marketing, operations, and risk management
About SizeProp
SizeProp is a crypto-native proprietary trading firm that funds traders to trade perpetuals without depositing their own capital. Traders pay a one-time fee for an evaluation challenge starting at $35; those who pass receive funded accounts up to $100K, keep up to 95% of the profits, and withdraw same-day in USDT. SizeProp has granted over $50M in prop capital to 3,500+ traders in 150+ countries, and has never refused a payout. Users can learn more at https://www.sizeprop.com
About Igloo, Inc.
Igloo, Inc. is a collection of companies, the largest of which is Pudgy Penguins. Founded in 2024, the company is headquartered in Miami, Florida. Millions of people use its wide range of popular crypto-native products and platforms each day, from Pudgy Penguins, Pudgy World, OverpassIP, and more. To learn more about Igloo, users can visit igloo.inc.