High-Margin SaaS Starting at 1,500 Yen Per Month: ChatPlus (598A) IPO and 2027 Scenario Analysis

[Summary]

On June 11, 2026, the Tokyo Stock Exchange approved the new listing of ChatPlus Co., Ltd. (598A) on the TSE Growth Market. The scheduled listing date is July 15, 2026.

ChatPlus is a SaaS company that provides chatbot systems for inquiry handling, including "ChatPlus" and "AI AgentPlus," as well as the FAQ system "FAQPlus."

As an IPO, the first impression is easy to understand: profitable, AI-related, SaaS, small-cap, and highly profitable. Based on the indicative price of 1,050 yen, the implied market capitalization is about 4.88 billion yen, and the expected offering size including the overallotment is about 1.39 billion yen. Using fiscal 2025 net income of 246 million yen, the trailing PER is about 19.8x.

At the same time, it would be risky to read this company too casually as "high ROE equals successful human capital investment." The company's return on equity was 81.6% in fiscal 2025, but this also strongly reflects the small equity base typical of an asset-light SaaS company. The real point to watch is that ChatPlus is generating high profits with an extremely light capital structure.

Looking toward 2027, the key question is how far the company can upsell and cross-sell from its existing low-priced, feature-rich chatbot base into higher-priced "AI AgentPlus" and "FAQPlus." The generative AI wave is a tailwind, but it is also a source of competitive pressure as large players such as OpenAI, Google, Salesforce, and Zendesk make customer-facing AI cheaper and stronger.

In the short term, the conditions for a firm IPO debut are in place. Over the medium term, this is a stock where investors should watch ARR, the number of AI AgentPlus accounts, ARPU, churn, and hiring progress.

Listing Overview

First, here are the IPO terms.

The implied market capitalization is about 4.88 billion yen, calculated by multiplying the indicative price of 1,050 yen by 4,650,000 shares outstanding at listing.

The expected offering size is about 1.39 billion yen, calculated by multiplying 1,322,500 shares, the sum of the primary offering, secondary offering, and overallotment, by 1,050 yen.

For a Growth Market IPO, this is not a heavy deal. It is also easy for individual investors to understand the themes: profitable SaaS, AI chatbots, and generative AI agents.

That said, part of the public float is a secondary offering. Against the primary offering of 650,000 shares, there are 500,000 secondary shares and 172,500 overallotment shares. This should be viewed not as a pure growth-capital IPO, but as a transaction that also includes partial monetization by existing shareholders.

IPO Schedule

The timeline from bookbuilding to listing is as follows.

The underwriting syndicate consists of Marusan Securities, SMBC Nikko Securities, Okasan Securities, Tokai Tokyo Securities, SBI Securities, Monex Securities, Matsui Securities, Rakuten Securities, IwaiCosmo Securities, Kyokuto Securities, and Toyo Securities.

The key points during bookbuilding are where the tentative range is set, whether the final offer price is set at the top of the range, and the IPO market environment at the time.

From a supply-demand perspective alone, this deal does not look bad. The risk of pricing below the offer price appears relatively low. However, whether the first price jumps significantly on the listing day will depend on the tentative range, offer price, recent IPO first-price results, and the broader Growth Market tone.

Business Model: From Low-Priced Chatbots to AI Agents

ChatPlus' core business is SaaS that automates and streamlines inquiry handling.

It has three main products.

The important point is that ChatPlus is becoming more than just a low-priced chatbot company.

The original ChatPlus product is easy to implement, low-priced, and feature-rich. It can be used for website inquiries, internal inquiries, e-commerce customer service, and live chat support across a wide range of use cases.

By contrast, the growth driver in the generative AI era is AI AgentPlus.

Traditional scenario-based chatbots are good at predefined branches and answers, but weak when users ask unexpected questions. AI AgentPlus uses generative AI to respond in natural conversation based on the data and knowledge registered by each customer company. If it is linked with FAQPlus, AI AgentPlus can learn from FAQ articles and answer through dialogue without requiring visitors to search manually.

In other words, the investment story for ChatPlus is as follows.

Broad adoption through low-priced, feature-rich ChatPlus
↓
Higher unit prices through AI AgentPlus
↓
FAQPlus cross-selling
↓
Higher ARR and ARPU

If this structure really works, the market's view of the company could change toward 2027.

But this is not a place to invest on expectations alone. The number of ChatPlus accounts declined from 2,182 in June 2025 to 2,037 in March 2026. At the same time, AI AgentPlus increased from 136 to 197 accounts, and FAQPlus increased from 10 to 15 accounts. If lower-tier plans are declining while upper-tier, AI, and FAQ accounts are growing, the decline in total account count alone is not necessarily a negative signal.

Investors should focus not on total account count, but on ARR and pricing mix.

ARR: Time to Watch Pricing Mix More Than Company Count

ChatPlus highlights more than 24,000 implementation records, but for investment analysis, "implementation record" and "paid account count" should be separated.

The ARR and service-by-service account counts disclosed in the I filing are as follows.

ARR has been building steadily. As of June 2025, it was up 36.7% year over year.

Service-by-service account counts are as follows.

On the surface, total account count peaked in June 2025 and has declined since then.

However, the company explains that while lower-tier ChatPlus plans have decreased, upper-tier ChatPlus plans, AI AgentPlus, and FAQPlus have increased, so ARR has continued to trend upward.

This is very important.

SaaS companies are not valued by user count alone. If low-priced users decline, high-priced users increase, and ARR rises, the quality of the business may actually be improving.

Conversely, if AI AgentPlus growth slows and only the decline in lower-tier ChatPlus plans continues, the market will likely view it as a growth slowdown.

ChatPlus' valuation after listing will depend on how consistently it continues to disclose these KPIs. The most important items to watch are ARR growth, ARPU, churn, AI AgentPlus contract count, and the FAQPlus cross-sell rate.

Earnings: Small, but Highly Profitable

Recent earnings are quite strong.

The ordinary profit margin in FY2025/6 was 36.1%. For a company with revenue of roughly 1.0 billion yen, that is very high.

In the first three quarters of FY2026/6, the company had already reached revenue of 912 million yen, ordinary profit of 437 million yen, and quarterly net income of 287 million yen. Both ordinary profit and net income already exceeded the previous full-year results.

Viewed only through this lens, the company looks very attractive.

However, it is important not to over-romanticize the company's high ROE.

The 81.6% ROE in FY2025/6 does not only show the success of human capital investment. Because this is a SaaS business with limited tangible fixed assets, and because net assets were only 419 million yen at the end of FY2025/6, the small equity denominator also pushes ROE upward.

In other words, the essence of ROE above 80% is not "human capital investment has worked perfectly." It is that the company is generating high profits with an extremely light capital structure.

That is not a weakness. If anything, it is a strength.

Still, investors should not discuss medium- to long-term growth based only on high ROE. If the company increases hiring, development, and advertising after listing, margins could decline temporarily. The real test is whether it can grow AI AgentPlus while maintaining high profitability.

Valuation: Is the 1,050 Yen Indicative Price Expensive?

Here is the valuation based on the indicative price of 1,050 yen.

A trailing PER of about 19.8x does not look extremely expensive for a profitable AI SaaS IPO.

In addition, if the FY2026/6 third-quarter cumulative net income of 287 million yen is simply annualized, it becomes about 383 million yen. Dividing the implied market capitalization of 4.88 billion yen by that number brings the reference PER down to about 12.8x.

Of course, simply annualizing nine-month earnings is a rough calculation. Advertising expense, hiring expense, listing-related costs, and development investment could increase in the fourth quarter. This 12.8x should not be treated as the proper PER as-is.

Even so, it is hard to say that the indicative price of 1,050 yen is excessively expensive just because this is an AI SaaS company.

PBR changes significantly depending on assumptions. If only FY2025/6-end net assets of 419 million yen are used, the PBR is about 11.7x. If the increase in net assets from the primary offering is roughly taken into account, it falls into the 4x range. Because PBR is highly sensitive to calculation assumptions, this article focuses on PER, PSR, and ARR multiples.

The implied market capitalization is about 4.1x ARR as of March 2026, when ARR was 1.198 billion yen. From the perspective of high-growth SaaS, this also does not look overheated.

The question is whether AI AgentPlus growth continues after listing.

First-Price Scenario: Low Risk of Falling Below the Offer Price, Upside Depends on Market Tone

ChatPlus is likely to have a firm debut when viewed from both supply-demand and thematic angles.

The positives are as follows.

• Expected offering size of about 1.39 billion yen, light for a Growth Market IPO
• Profitable, with strong earnings progress through the third quarter of FY2026/6
• Easy-to-understand themes: AI, generative AI, SaaS, and inquiry automation
• Indicative trailing PER of about 19.8x, which does not look excessively expensive
• One trading unit is 105,000 yen, making it accessible for individual investors

The negatives are as follows.

• Revenue scale is still small, around 1.0 billion yen
• The organization is small, with 22 employees, so post-listing hiring and development capacity are key issues
• There are 500,000 secondary shares and 172,500 overallotment shares, so supply-demand is not entirely light
• Competition in generative AI can intensify quickly as large players enter
• AI-related themes can overheat at the first price, followed by a reversal in secondary trading

The base image is that if the tentative price range is strong, the offer price is set at the top of the range, and the recent IPO market has not deteriorated, the first price is likely to be above the offer price.

However, if the first price jumps sharply, the discussion changes. If the stock rises more than 50% from the indicative price, the price will start to reflect a significant amount of 2027 growth rather than only short-term supply-demand appeal.

For anyone considering buying at the first price, it would be better to watch trading volume over the first two to five sessions, whether lows are rising, and whether capital continues to flow into the AI SaaS theme.

2027 Scenarios

ChatPlus' medium-term valuation will depend on how it monetizes the shift to generative AI.

Here are three scenarios.

Bull Case: AI AgentPlus Becomes the Core Product

In the bull case, ChatPlus uses its broad customer base as the entry point, while cross-selling higher-priced AI AgentPlus and FAQPlus.

In this case, ChatPlus would be valued not merely as a chatbot company, but as a small, highly profitable customer-facing AI agent SaaS company.

To reach a market capitalization of 10.0 billion yen, the stock would need to roughly double from the offer-price basis. Even in light of the TSE Growth Market's medium-term standard, showing a path to becoming a 10.0 billion yen company after listing is important.

In the bull case, one benchmark would be whether FY2027/6 revenue of more than 1.5 billion yen and ordinary profit in the high 500 million yen to 600 million yen range start to come into view.

Neutral Case: Stabilizes as a High-Margin Cash Machine

In the neutral case, AI functions provide some differentiation, but not explosive growth.

Even so, ARR grows at roughly 15-20% per year through existing customer retention, migration to higher plans, and some FAQPlus cross-selling.

In this case, the stock becomes a quiet SaaS name that is evaluated each quarter, rather than a theme stock that surges rapidly.

Rather than buying an overheated post-IPO share price, it would be easier to judge after confirming the first post-listing earnings release and KPI disclosure.

Bear Case: Generative AI Destroys Differentiation

In the bear case, the evolution of generative AI becomes a source of price competition rather than a tailwind.

In this case, even if the PER based on the offer price looks cheap, the market will start pricing in slower growth.

For SaaS stocks, when growth slows, both PER and PSR contract quickly. The biggest risk for ChatPlus is not losses, but being viewed as a company that is highly profitable yet has limited growth runway.

KPIs Investors Should Watch

The KPIs to watch after listing are quite clear.

In particular, the number of AI AgentPlus contracts is important.

As of March 2026, there were 197 accounts. Because this is a high-priced service starting at 170,000 yen per month, growth here can have a large impact on ARR.

At the same time, growing AI AgentPlus requires customer-by-customer data preparation, FAQ construction, operational support, and customer success. This may not be a fully self-serve SaaS product that grows automatically.

That is why investors need to watch the balance between headcount expansion and margins.

Use of Proceeds

The proceeds from the primary offering are expected to be allocated to the following uses.

• Feature enhancement
• Additional feature development
• Research and development of new technologies
• Human capital investment
• Sales promotion activities

The direction is right.

What ChatPlus needs is not simply to increase advertising and expand the number of implementations. It needs to develop AI AgentPlus and FAQPlus into products that penetrate deeply into customer companies' workflows.

That requires higher generative AI answer accuracy, hallucination control, external system integration, automatic FAQ generation, lower operating burden, and stronger customer success.

However, there are also risks around the use of proceeds. Even if the company invests in R&D, advertising, and hiring, those investments may not lead to the expected sales. The prospectus also identifies the possibility that the expected investment effects from the use of proceeds may not be achieved.

This should be checked through post-listing earnings.

Investment Strategy: Watch AI-Driven Unit Price Growth More Than the First Price

ChatPlus looks good as a short-term IPO.

It is profitable, AI-related, SaaS, small, and highly profitable. The PER based on the indicative price is not too high, and the offering size is light.

For that reason, bookbuilding demand is likely to be solid.

However, for secondary-market buying, investors should be careful about how far the first price rises. The more the first price rises above the offer price, the more short-term expectations are already priced in.

From a medium-term perspective, the question is quite simple.

Can ChatPlus evolve from a low-priced chatbot company into an AI agent SaaS company?

That is the whole issue.

The company's "more than 24,000 implementation records" is a strong entry point. But what will determine the stock price is not the implementation record itself, but ARR, ARPU, churn, and AI AgentPlus growth.

The conditions for a strong stock toward 2027 are the following three.

1. AI AgentPlus and FAQPlus grow, and ARR growth is maintained
2. Margins do not deteriorate significantly even as hiring, development, and sales promotion increase
3. The company shows why it can remain in customer operations despite competition from large generative AI and CRM companies

If these three points can be confirmed, there is upside from a market capitalization of just under 5.0 billion yen.

Conversely, if the decline in lower-tier ChatPlus plans, slower AI AgentPlus growth, and margin deterioration appear at the same time, the favorable impression at listing will fade quickly.

In an IPO, a "good company" and a "good stock price" are different things.

ChatPlus looks like a good company. The question is how much of the future the stock price will have priced in after the first price is formed.

Conclusion

ChatPlus (598A) is an AI chatbot SaaS company scheduled to list on the TSE Growth Market on July 15, 2026.

Based on the indicative price of 1,050 yen, the market capitalization is about 4.88 billion yen, and the offering size including the overallotment is about 1.39 billion yen. The trailing PER based on FY2025/6 net income is about 19.8x, which is an understandable level for a profitable AI SaaS IPO.

The biggest attraction is the light capital structure and high profit margin. In FY2025/6, the ordinary profit margin was 36.1%, and ROE was 81.6%. However, this ROE also reflects the asset-light structure and small equity denominator, so it should not be turned into an overly convenient story.

The core post-listing issue is unit-price growth through AI AgentPlus and FAQPlus. As of the end of March 2026, ARR was 1.198 billion yen, AI AgentPlus had 197 accounts, and FAQPlus had 15 accounts. If these grow toward 2027, ChatPlus could be revalued from a low-priced chatbot company into a customer-facing AI company for the generative AI era.

In the short term, this looks like a deal that can produce a firm first price.

Over the medium term, the first earnings release and KPI disclosure matter more than the first price. ARR, ARPU, AI AgentPlus, FAQPlus, churn, and hiring progress should be checked before judging the probability of the 2027 scenario.

Sources

• Japan Exchange Group, "New Listings" https://www.jpx.co.jp/listing/stocks/new/
• Japan Exchange Group, "ChatPlus Co., Ltd. New Listing Company Outline" https://www.jpx.co.jp/listing/stocks/new/t13vrt000001faux-att/07ChatPlus-Outline.pdf
• Japan Exchange Group, "ChatPlus Co., Ltd. Securities Report for New Listing Application (Part I)" https://www.jpx.co.jp/listing/stocks/new/t13vrt000001faux-att/07ChatPlus-1s.pdf
• ChatPlus official website https://chatplus.jp/