Anthropic's IPO Hits Japanese Brokerages: A Retail Investor's Guide to the $70–$78 Share Offering

Japanese retail investors have until November 18 to apply for Anthropic's IPO through Mizuho, SBI, or Rakuten. The piece is a practical how-to, not analysis — useful but thin on structural risk.

Anthropic (ticker: ANT) has opened its IPO book-building process to Japanese retail investors through three brokerages — Mizuho Securities, SBI Securities, and Rakuten Securities. The subscription window runs from November 11 through November 18, with slight variations by platform. All three offer zero purchase fees and NISA eligibility.

The indicative IPO price range is $70–$78 per share, roughly ¥12,000. Rakuten stands out for yen-denominated purchases with zero forex fees. SBI offers enhanced allocation odds for customers with ¥100,000+ in its Hyper Deposit product. Mizuho allows in-branch and telephone applications for those who prefer human contact. The article frames the opportunity through the lens of recent mega-IPOs. SpaceX listed at $135 and opened at $150 — an 11.1% pop. Rivian's 2021 IPO saw a 36.9% first-day surge from $78 to $106.75. Arm's 2023 debut produced a 10.0% gain. These comparisons set expectations for a potential first-day premium, though the article correctly notes the reverse is also possible. More telling is the longer-term scorecard. Arm now trades at roughly 4× its IPO price. SpaceX hovers near its IPO-to-opening range. Rivian has collapsed to approximately one-sixth of its IPO price. The divergence is a useful reminder that first-day pops and long-term value creation are entirely different phenomena. The column's actual investment thesis is modest and sensible: skip the IPO lottery, wait for the post-listing volatility to settle, then enter at a calmer price. This is reasonable advice for retail participants who lack the allocation power of institutional investors and bear the full brunt of first-day price discovery chaos. What the piece does not address is the structural question of what Anthropic's IPO means for the AI industry's capital formation cycle. At an implied valuation reportedly exceeding SpaceX's, the offering tests whether public markets will absorb AI-lab economics — heavy capex, negative cash flow, and revenue concentration in API services — at venture-grade multiples. Japanese retail investors are being invited to the table, but the article doesn't examine what's being served. The practical details are genuinely useful: brokerage comparison, deadlines, fee structures, NISA compatibility. As a service-journalism piece it delivers. As investment analysis it's deliberately thin, and the disclaimer at the bottom does the heavy lifting the prose does not.