That Little Letter Next to an IDX Stock Code Is a Warning Label. Here's What Each One Means
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7 min read
You are scanning a stock quote and you notice a single letter sitting right after the ticker code. No explanation, no popup, just a letter. Most apps do not tell you what it means, and it is easy to scroll past it. You should not. That letter is the Indonesia Stock Exchange (IDX, or BEI in Indonesian) telling you something specific about the company behind the ticker, based on information BEI itself has already made public.
This is notasi khusus, special notation, and it is one of the simplest risk signals available to any investor looking at an IDX-listed stock. It costs nothing to check and it is not the exchange's opinion of whether to buy or sell. It is a fact tag.
Special notation is a single letter the IDX attaches to a listed company's stock code when a specific, defined condition applies to that company: things like an overdue financial report, a legal case, or a regulatory sanction. BEI does not attach these letters as punishment. They exist so an investor can see a company's flagged condition directly from the stock code itself, without digging through separate disclosures first (Ajaib, retrieved 6 September 2026).
The system has grown over time. BEI introduced seven notations early on, then added six more in January 2021 as new risk categories came up, for 13 in total. In August 2026, BEI added four more, bringing the running total closer to 17 depending on which are still active during the current transition (more on that below).
These seven notations have been part of BEI's system for years and are still the ones you will run into most often:
| Letter | What it flags |
|---|---|
| A | An adverse opinion from the company's public accountant on its financial statements |
| B | A bankruptcy declaration petition has been filed against the company |
| D | A disclaimer opinion, meaning the public accountant could not form an opinion at all on the financial statements |
| E | The company's latest financial report shows negative equity |
| L | The company has not submitted its financial report to BEI on time |
| M | A PKPU petition (Penundaan Kewajiban Pembayaran Utang, a court-supervised debt-payment suspension) has been filed against the company |
| S | The company's latest financial report shows no operating revenue at all |
Source: Ajaib and RHB Tradesmart, retrieved 6 September 2026.
An A or a D is specifically about the audit itself, not the company's performance. An adverse opinion means the accountant looked at the numbers and concluded they do not fairly present the company's financial position. A disclaimer is different and arguably more concerning: it means the accountant could not gather enough information to reach any conclusion either way.
BEI added six additional notations in January 2021 to cover categories the original seven did not:
| Letter | What it flags |
|---|---|
| C | A material legal case involving the company, a subsidiary, or a member of its board of directors |
| F | A light-category administrative sanction or written order from OJK (Otoritas Jasa Keuangan, Indonesia's financial services regulator) for a capital-market rule violation |
| G | A moderate-category OJK administrative sanction, one step up from F |
| Q | The regulator has restricted the company's business activities |
| V | A severe-category OJK administrative sanction, the most serious of the three tiers |
| Y | The company has not held its annual general shareholder meeting (RUPST) within six months of its fiscal year ending |
Source: Ajaib, retrieved 6 September 2026.
F, G and V are worth remembering as a set: they are the same kind of event, an OJK sanction, at three different severity levels. Seeing a G rather than an F on a stock code tells you the violation behind it was judged more serious, without you needing to track down the underlying OJK order yourself.
BEI issued Circular Letter SE-00009/BEI/07-2026, dated 31 July 2026, updating how special notation is displayed and adding new letters, effective 3 August 2026 (Bisnis.com, retrieved 6 September 2026). Four new letters came out of that circular:
| Letter | What it flags |
|---|---|
| P | The company does not meet the minimum free float requirement (the share of stock actually available to the public rather than held by controlling parties) |
| N | The company uses multiple voting shares (MVS) and is not listed on the New Economy Board |
| K | The company uses multiple voting shares (MVS) and is listed on the New Economy Board |
| I | The company does not use multiple voting shares and is listed on the New Economy Board |
Source: Bisnis.com and Liputan6, both retrieved 6 September 2026.
These four are being phased in on a schedule rather than applying to every stock on day one: they start with companies on the Acceleration Board (Papan Akselerasi) from 30 November 2026, and extend to companies on the Main Board and Development Board from 30 April 2027 (most.co.id, retrieved 6 September 2026). If you check a stock's notation today and see nothing, it does not necessarily mean the company clears the free float bar. It may simply mean that particular check has not reached its board yet.
The same circular sets 30 November 2026 as the date through which the older A, D, E and S notations remain valid. Multiple outlets, including Bisnis.com, report BEI is retiring these four codes as part of the same overhaul, though the exact replacement mapping had not been separately confirmed as of this writing. Treat A, D, E and S as active for now, and expect the list to look different again after that date.
None of this is exclusive. A company that is both late filing its financial report and facing a legal case can carry an L and a C at the same time. A company already flagged for negative equity that then also skips its shareholder meeting picks up a Y on top of an existing E. Each letter is answering a different, independent question about the company, so seeing multiple letters is not a separate, worse category. It just means multiple separate conditions apply.
A single notation letter is not a verdict. It is a prompt to go read further before you act. If you see an M or a B, that is worth understanding in full since it points at a solvency question. If you see an F, it is worth knowing what the underlying OJK order actually said, since a light sanction and a severe one land in very different places even though both start with a regulatory action. None of this tells you to buy, hold or sell anything; it tells you where to look next.
Before assuming a notation letter is old news or checking whether a stock you are watching carries one at all, use NetWort's Explore screener to pull up current data across IDX names side by side rather than checking one ticker at a time. Blue-chip names like BBCA are a useful baseline for what an unflagged stock's profile looks like, worth comparing against anything that does carry a letter.