Quick Summary
Aionion Capital Market Services Private Limited holds stock broker registration INZ000318532 and Research Analyst registration INH000020138 since March 2025. The RA complaint disclosure required by SEBI is missing from their website. NSE data shows 3 complaints from 29,114 active clients in 2025-26, with 2 classified as service-related. Customer reviews describe login failures during market hours, higher than expected brokerage, and support that went silent when problems appeared. This page covers everything before you decide.
Aionion Capital Market Services Private Limited is headquartered in Chennai and holds two SEBI registrations.
Stock broker registration INZ000318532 and Research Analyst registration INH000020138, the latter effective from March 24, 2025.
The Research Analyst team is led by Dr. Albin Vimal Raj, with Anish Gupta as the registered Research Analyst.
Services include equity, IPO, mutual funds, bonds, and research recommendations.
On paper, this is a company with genuine regulatory credentials and a broad service offering.
What a closer look at the complaint data, missing disclosures, and customer reviews reveals is a more complicated picture.
RA Complaint Disclosure Is Missing From the Aionion Capital Market Services
Every SEBI-registered Research Analyst must publish investor complaint data on their official website. SEBI’s regulations require this disclosure to be maintained and updated monthly.
The Research Analyst registration for Aionion Capital became effective in March 2025. Monthly complaint data covering every month since then should be publicly visible on the website.
It is not there.
The absence of mandatory RA complaint disclosure while the firm continues to operate and collect subscriptions is a specific compliance gap.
It is not a minor omission. It is one of the first things a prospective investor should check and one of the first things SEBI monitors.
What the NSE Complaint Data Shows?
On the stock broking side, the NSE complaint data is publicly available and provides a clearer picture.
Aionion Capital had 29,114 active clients during FY 2025-26 and received 3 complaints across the year. All 3 are reported as resolved.
|
Complaint Type |
Count | Status |
|---|---|---|
| Service related (Type V) | 2 |
Resolved |
|
Other |
1 | Resolved |
| Total | 3 |
All resolved |
The resolution rate is clean. But the nature of those 2 service complaints is worth understanding before drawing conclusions.
Type V service complaints cover excess brokerage charges, wrong or non-execution of orders, connectivity and system problems, non-receipt of corporate benefits, and other service defaults.
These are not abstract regulatory technicalities. They are the specific experiences that affect investors during active market hours when problems are most costly.
Two investors out of 29,114 formally raised service complaints through the official mechanism. The number is low in absolute terms.
Whether it reflects the full range of client dissatisfaction or only the clients who knew to file formally is a separate question.
What Customers Say About Aionion Capital Market Services Private Limited
Beyond the formal complaint data, customer reviews across platforms describe specific patterns. The accounts below are from named users on verified platforms.
We are reporting what they wrote and have not independently verified the specific transactions described.
1. Login Failures During Market Hours
Multiple reviewers describe the trading app experiencing technical glitches, including login failures, specifically during active market periods.
An investor who cannot access their account while the market is moving faces a direct financial consequence that no amount of post-resolution explanation repairs.
Whether these are isolated incidents or a pattern that matches the Type V service complaints in the NSE data is not confirmable from public information.
But the appearance of the same issue across independent reviews suggests it is not a one-off experience.
2. Brokerage Higher Than Expected
One reviewer describes discovering that the minimum brokerage policy in the tariff sheet produced charges significantly higher than what they had anticipated.
The specific conditions they highlighted include a minimum brokerage of Rs. 25 per day per exchange per segment if calculated brokerage falls below that amount, and similar minimum charge provisions for stocks priced below Rs. 10.
The tariff sheet also states the firm reserves the right to revise its brokerage structure.
These are disclosed terms. An investor who reads the tariff sheet carefully before opening an account will find them. An investor who does not read it carefully may find the charges surprising after the fact.
3. Policy Changed With No Cmmunication
One reviewer describes a situation where a policy benefit was revised during their subscription period. They were not notified by email, SMS, or phone call.
When they raised the issue, they were told they should have checked the app themselves.
A financial loss followed from relying on what they understood to be a current policy.
Whether proactive communication of material policy changes is a regulatory requirement specific to this firm’s registrations depends on the nature of the change.
But the reviewer’s core complaint, that the company revised something that affected their money without telling them, is a fair service standard any investor would expect to be met.
4. Support Unresponsive When It Mattered
A fourth pattern across reviews is support going quiet when investors needed help. Calls unanswered, messages not responded to, and no escalation path visible.
One reviewer specifically describes added funds not appearing in the app during market hours, with no way to reach support quickly enough to act.
The Type V service complaint category in the NSE data covers connectivity and system related problems. The pattern in customer reviews aligns with that category in a specific way.
What the Social Media Presence Tells You and What It Does Not?
Aionion Capital is present across Google Play, App Store, Facebook, X, Instagram with 5,000 plus followers, LinkedIn with 2,000 plus connections, and YouTube with 1,650 plus subscribers.
An active social media presence across these platforms suggests a firm that invests in marketing.
It does not confirm anything about service quality, complaint responsiveness, or the reliability of the app during market hours. Both things can be true simultaneously.
What to Check Before You Invest With Aionion Capital?
Three specific checks take under 10 minutes and tell you more than any marketing page will.
Go to sebi.gov.in and verify both registrations. Confirm INZ000318532 under stock broker and INH000020138 under Research Analyst both show Active status.
Note the date of the RA registration (March 2025) and ask the firm where the mandatory monthly complaint disclosures for the period since then are published.
Read the tariff sheet before opening an account.
The minimum brokerage provisions are in there. Understanding exactly how brokerage will be calculated before your first trade is significantly better than discovering it afterwards.
Contact the support line before you invest.
If support is unresponsive before you are a paying client, that is information about what support will look like when you need it after a problem appears.
What to Do If You Facing a Problem With Aionion Capital?
If your experience with Aionion Capital involved brokerage charges you did not expect, an order that was not executed correctly, funds not reflecting in the app, or support that did not respond, these situations have formal complaint channels.
For stock broking complaints, the escalation path runs from the company’s internal grievance mechanism to the NSE investor complaint portal for NSE trades, then to SEBI SCORES, then to SMART ODR, and finally to exchange arbitration if needed.
And for research analyst service complaints, the path runs from the company directly to SEBI SCORES under the Research Analyst category using registration number INH000020138.
For the complete guide on SMART ODR and how it connects to exchange arbitration, the process guide covers every stage.
Read how SMART ODR conciliation works.
Our team files your SEBI SCORES complaint, prepares the documentation, and represents you through SMART ODR and arbitration.
Conclusion
Aionion Capital Market Services Private Limited holds genuine SEBI registrations and a clean formal complaint resolution record. Those are real positives.
What the RA disclosure gap, the NSE Type V service complaints, and customer reviews describing login failures, unexpected brokerage, and silent support reveal is that the service experience does not uniformly match what the registrations and marketing suggest.
The missing mandatory RA complaint disclosure is a compliance question that any prospective investor is entitled to ask before paying.
The customer patterns are not extreme. They are specific. And specific patterns in reviews are worth taking seriously before any money changes hands.
Frequently Asked Questions
Yes. The company holds stock broker registration INZ000318532 and Research Analyst registration INH000020138, effective from March 24, 2025. Both can be verified independently on sebi.gov.in under their respective intermediary categories.
NSE data for FY 2025-26 shows 3 complaints from 29,114 active clients. All 3 are reported as resolved. Two of the three are classified as Type V service complaints, covering issues like excess brokerage, order execution problems, and connectivity failures.
SEBI requires every registered Research Analyst to publish monthly investor complaint data on their website. Aionion Capital's RA registration became effective in March 2025. The mandatory monthly disclosure data for the period since then was not visible on the website at the time of this review. This is a compliance gap under SEBI's RA regulations.
Document the failure with screenshots showing the time, the error message, and any trades you were unable to place. Raise the issue formally in writing with the company's grievance team. If not resolved within 15 to 30 days, file with NSE's investor complaint portal for the exchange-level record, then escalate to SEBI SCORES.
Type V is the NSE complaint classification covering service-related issues. This includes excess brokerage charges, wrong or non-execution of orders, connectivity and system problems, non-receipt of corporate benefits, and other service defaults. Two of Aionion Capital's three NSE complaints fall in this category.
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