Japan’s Brokerage War: Rakuten Lowers Entry Barriers, Webull Eyes Quant Traders, and Woodstock Cracks the Onboarding Code
The Japanese brokerage landscape is facing ever tighter competition this spring as major players and nimble FinTechs roll out new features aimed at capturing a broader range of retail and sophisticated investors. From lowering the cost of entry for ETFs to leveraging government digital ID infrastructure for lightning-fast onboarding, here is the latest from the front lines of the industry.
1. Rakuten Securities: Democratizing ETFs with 100-Yen Fractional Trading
Rakuten Securities has officially fired a shot across the bow of its competitors by integrating ETFs into its "Kabu Pita" (Amount-Specified Trading) service. Effective March 26, 2026, Rakuten became the first major online broker in Japan to allow investors to purchase ETFs for as little as 100 yen, with increments of just 1 yen.
Previously, ETFs were typically traded in "units," which created a price barrier for smaller investors. By shifting to an amount-based model, Rakuten is effectively treating ETFs with the same ease of access as traditional mutual funds. This move is specifically targeted at the NISA Growth Quota, allowing users to utilize Rakuten Points for their investments.
The initial rollout includes a curated list of 15 high-demand instruments, ranging from broad market indices like TOPIX and the Nikkei 225 to specialized sectors like US Tech (S&P 500, NASDAQ 100) and semiconductor-related funds. While Rakuten charges a 0.22% spread rather than a flat commission for these trades, the "zero-yen commission" marketing remains a powerful draw for the retail crowd.
2. Webull Securities: A New Frontier for Algorithmic US Margin Trading
While Rakuten targets the mass market, Webull Securities is pivoting toward the high-tech, sophisticated trader. On April 1, 2026, Webull announced that it is the first in Japan to support US stock margin trading via an API (Application Programming Interface).
By opening their "Webull Open API" to margin trading, Webull is courting a growing class of retail "quants"—investors who use automated tools, custom trading bots, and platforms like TradingView to execute strategies. This update allows for leveraged long positions and short selling, providing a level of flexibility previously unavailable to API users in the Japanese market.
Webull is also competing aggressively on price. The firm announced a 4.5% interest rate for buy-side margin and a stock lending fee starting at 1.5%—rates they claim are the lowest in the industry compared to domestic giants like SBI and Rakuten. To further entice users, they have launched a campaign offering zero commissions on US stock trades for one month for users who meet specific trading volume thresholds.
3. Woodstock: The Gold Standard for Digital Onboarding
Woodstock, a social-media-style US stock investment app, has emerged as a pioneer in operational efficiency. Following its October 2025 integration of smartphone-based My Number Card verification, the company has released data showing a staggering improvement in user acquisition.
According to a report highlighted by Japan’s Digital Agency, Woodstock’s "Smartphone My Number" verification method (utilizing the Apple Wallet API) has boosted account opening completion rates by 70%. By allowing users to verify their identity via the card's embedded chip rather than the traditional method of photographing the physical card and their face, Woodstock has slashed the average onboarding time from nearly six minutes to just 2 minutes and 40 seconds.
This success story has made Woodstock a "poster child" for the Japanese government's digital transformation (DX) initiatives. Currently, roughly 40% of Woodstock’s new customers are choosing this digital-first verification method. By removing "friction" from the paperwork process, Woodstock is proving that in the fintech world, the smoothest user experience often wins the race for new assets.
Norbert Gehrke
