Value investing and stock analysis,without the hype
Plain-language guides on value investing, the methodology behind Ploutos AI's stock research, and how to interpret each analysis.
- 24 articles
- 4 categories
- Latest article: October 4, 2026
How Ploutos works
Our method, our sources, its limits, and how we keep score on ourselves.
Stock research tools that cite SEC filings: what "cites the filing" actually means, tool by tool
Eight tools say their numbers come from SEC filings. They mean three different things. Where each one's figures actually come from, what a citation points to, and what each covers, checked on the vendors' own pages in September 2026.
Nikolaos DrongitisRead the article 
How we track our own track record (and why most pickers hide theirs)
Most stock pickers quietly bury their misses. Here is how Ploutos AI records every pick at decision time and benchmarks it against the market, openly.
Nikolaos DrongitisRead the article 
Why AI stock tools hallucinate, and how we stop it
A language model will happily invent a P/E ratio or an insider trade that never happened. Here is why it happens, and how Ploutos AI prevents it.
Nikolaos DrongitisRead the article 
Why we sometimes refuse to analyze a stock (and tell you instead)
Incomplete data produces a confident but misleading verdict. Here is how Ploutos AI checks data coverage before spending your analysis, and when it stops.
Nikolaos DrongitisRead the article 
How Ploutos AI analyzes a stock in 4 stages (and one Devil's Advocate)
From screening to bear-case stress test, the full pipeline that runs every time you submit a ticker, explained without jargon.
Nikolaos DrongitisRead the article The full analysis
What do a company's filings show?
The guides explain the method. The full Ploutos AI analysis reads everything a company has filed and shows what stands behind its figures, with a source for each one.
- A fair value range built from the filings
- Earnings quality, debt and red flags
- Insider and institutional moves
- The case for and the case against